CA2315578A1 - Cutter link having a depth limiter divided into a support surface and a top surface - Google Patents
Cutter link having a depth limiter divided into a support surface and a top surface Download PDFInfo
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- CA2315578A1 CA2315578A1 CA 2315578 CA2315578A CA2315578A1 CA 2315578 A1 CA2315578 A1 CA 2315578A1 CA 2315578 CA2315578 CA 2315578 CA 2315578 A CA2315578 A CA 2315578A CA 2315578 A1 CA2315578 A1 CA 2315578A1
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- top surface
- cutter
- cutter link
- travel
- link according
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B33/00—Sawing tools for saw mills, sawing machines, or sawing devices
- B27B33/14—Saw chains
- B27B33/141—Saw chains with means to control the depth of cut
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B33/00—Sawing tools for saw mills, sawing machines, or sawing devices
- B27B33/14—Saw chains
- B27B33/142—Cutter elements
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Sawing (AREA)
- Soil Working Implements (AREA)
Abstract
A cutter link for the saw chain of a power chain saw is provided, and includes a main body having rivet openings for connection with other chain links. When viewed in a direction of travel, the main body has a front portion and a rear portion, wherein the rear portion is provided with a cutter tooth having a top cutter and a lateral cutting edge, and wherein the front portion is provided with a depth limiter having a top surface that faces away from the main body. The depth limiter also has a support surface that is lower than the top cutter. The support surface and the top surface are surfaces that are separated from one another. The support surface is formed by the end face of a support element that is disposed essentially parallel to the plane of the main body, and the top surface is disposed on the same or a different chain link and comprises a wider surface, approximately transverse to the direction of travel, of a material segment of its chain link. The top surface is lower than the support surface.
Description
CUTTER LINK HAVING A DEPTH LIMITER DIVIDED
INTO A SUPPORT SURFACE AND A TOP SURFACE
Background of The Invention The present invention relates to a cutter link for the saw chain of a power chain saw, and includes a main body that has rivet openings for connection with other chain links of the saw chain. When viewed in the direction of travel, the main body has a front portion and a rear portion, wherein the rear portion is provided with a cutter tooth having a top cutter and a lateral cutting edge, and wherein the front portion is provided with a depth limiter having a top surface that faces away from the main body, with the depth limiter also having a support surface that is lower than the top cutter.
A cutter link of this general type is known from EP 0 712 700 A1, according to which the depth limiter is formed by a tab or tang of a front portion of the main body, with the tang being angled off transverse to the direction of travel of the cutter link. For this purpose, the carrying element of the depth limiter is first bent away toward that longitudinal side of the main body that is provided with the side cutter, with the free end section being bent back in the opposite direction by about 90°, so that it points toward the other longitudinal side of the main body.
To bend away that tang that forms the top surface of the depth limiter, the free end section of the carrying element must in the finished state have a length that corresponds to at least 1.5 times the thickness of the main body. As a consequence, the depth limiter necessarily has a minimum size that is dictated by the manufacturing process.
The top surface of the depth limiter drops off in the direction of travel, so that the higher edge fulfills a support function during a cutting process, and at the same time determines the chip or cutting thickness of the chip that is to be cut. In this connection, on the one hand a DE 199 38 223.9 of 12 August 1999 and DE 199 40.497.6 of 26 March 1999 -Canada reliable support is to be ensured, for which reason one has tried to keep the support surface large. On the other hand, due to the support on the material being cut, a large support surface increases the feed pressure that is necessary during the cutting process and causes the feed efficiency of the cutter link to drop so that the cutting efficiency also drops. Although a smaller support surface leads to a higher cutting efficiency with lower feed pressure, when a smaller support surface rests, for example, in soft wood then with increased feed pressure it penetrates very deeply into the material and can therefore no longer reliably ensure the function of limiting the chip thickness.
In order to achieve an acceptable compromise between the desired high cutting efficiency on the one hand and the reliable limitation of the chip thickness due to the depth limiter on the other hand, in the cutter link pursuant to EP 0 712 700 A1 the bent away tang of the depth limiter has a shape that is structurally complicated and expensive. For example, the trailing edge of the top surface that faces the cutter tooth is angled off in the direction of travel accompanied by the formation of a point that is directed toward the top cutter; also the free longitudinal edge of the depth limiter extends at an angle to the plane of the main body in such a way that the top surface tapers in the direction of travel.
It is therefore an object of the present invention to improve a cutter link having a depth limiter of the aforementioned general type in such a way that with a low structural and manufacturing expense a minimally required support surface is made available forthe effective limitation of the chip thickness, yet nonetheless excessive penetration of the support surface into soft material is reliably prevented.
Brief Description of the Drawings This object, and other objects and advantages of the present invention, will appear more DE 199 38 223.9 of 12 August 1999 and DE 199 40.497.6 of 26 March 1999 -Canada clearly from the following specification in conjunction with the accompanying schematic drawings, in which:
Fig. 1 is a side view of one exemplary embodiment of an inventive cutter link having a depth limiter;
Fig. 2 is a top view of the cutter link of Fig. 1;
Fig. 3 is a top view of a further exemplary embodiment of an inventive cutter link;
Fig. 4 is a side view similar to that of Fig. 1 of another exemplary embodiment of an inventive cutter link;
Fig. 5 is a side view of a cutter link having a depth limiter that is offset out of the plane of the main body;
Fig. 6 is a top view of the cutter link of Fig. 5;
Fig. 7 is a side view of an exemplary embodiment of a further inventive cutter link having a top surface disposed between the support surface and the cutter tooth;
Fig. 8 is a top view of the cutter link of Fig. 7;
Fig. 9 is a further exemplary embodiment of a cutter link similar to Fig. 7;
Fig. 10 is a side view of a further exemplary embodiment of an inventive cutter link with a top surface disposed between the support surface and the cutter tooth;
Fig. 11 is a top view of the cutter link of Fig. 10;
Fig. 12 is a side view of a cutter link having an edge of the top surface disposed DE 199 38 223.9 of 12 August 1999 and DE 199 40.497.6 of 26 March 1999 -Canada at the level of the support surface;
Fig. 13 is a side view of a cutter link having both a leading and trailing top surface in the direction of travel;
Fig. 14 is a top view of the cutter link of Fig. 13;
Fig. 15 is cross-sectional view through a saw chain having a top surface on the center link of the chain; and Fig. 16 is a cross-sectional view through a cutter link having a top surface formed by deformation of a material segment of the main body of the cutter link.
Summary of The Invention The cutter link of the present invention is characterized primarily in that the support surface and the top surface are surfaces that are separated from one another, wherein the support surface is formed by the end face of a support element of the cutter link that is disposed essentially parallel to the plane of the main body, wherein said top surface comprises a wider surface, approximately transverse to the direction of travel, of a material segment of a chain link, and wherein the top surface is lower than the support surface.
Embodying the support surface and the top surface separately enables their simple and different configuration, whereby to form the support surface different structural measures can be selected than for the formation of the top surface. For example, instead of a bending away a deformation of a material segment can also be advantageous for forming a wider top surface transverse to the direction of travel. In so doing, the otherwise necessary magnitude required for forming the support surface by bending away can be significantly reduced, so that simple structural means can be used to make a small support surface available that is adequate for DE 199 38 223.9 of 12 August 1999 and DE 199 40.497.6 of 26 March 1999 -Canada limiting the thickness of the chip that is to be cut and requires only a low feed power. In addition, the shape and position of the support surface can be selected independently of the shape and the position of the top surface, so that each support surface can be individually adapted to a particular application.
It should be emphasized that with the inventive configuration it is now also possible to easily limit the penetration depth of the support surface in a soft material by the position, configuration and size of the top surface without this having any effect upon the size and configuration of the support surface. In a simple manner the top surface is disposed lower than the support surface, so that with a designated use of the cutter link, i.e. a saw chain provided with the cutter link, merely the support surface rests against the material that is to be cut, as a result of which a high cutting efficiency is achieved with a low feed pressure. If the feed pressure of the cutter link into the material is improperly increased by the user, the support surface presses into the material, such as soft wood, whereby the top surface, which is disposed lower, effectively prevents a further penetration into the material that is to be cut.
Due to the arrangement of support surface and top surface at different levels, the user can, within a permissible band width, increase the pressure of the cutter link upon the material that is to be cut without the top surface coming into engagement and the cutting efficiency dropping. The drop off in cutting efficiency occurs only if due to an increased feed pressure the top surface comes to rest against the material that is to be cut, as a result of which the necessary drive power for the cutter link significantly increases. In a straightforward manner, the support surface is formed by the end face of a support rib or element on the main body that is disposed essentially parallel to the plane of the main body, and the top surface is DE 199 38 223.9 of 12 August 1999 and DE 199 40.497.6 of 26 March 1999 -Canada formed from a tang of a material segment of the main body of the cutter link, with the tang being angled off approximately transverse to the direction of travel. It can also be expedient to provide the support surface on the cutter link itself, and to form the top surface on a different chain link, for example the center link.
Further specific features of the present invention will be described in detail subsequently.
Description of Preferred Embodiments Referring now to the drawings in detail, the cutter link 1 illustrated in Figs. 1 and 2 is intended as a side link in a chain saw for a power chain saw. Saw chains are, of course, known, with the construction of one such chain being described in the aforementioned EP 0 712 700 A1.
The cutter link 1 comprises a main body 2, which has two rivet openings 3 for the connection of the cutter link 1 to further chain links. When the saw chain is connected, the cutter link 1 moves in the direction of travel 4, whereby a cutter tooth 6 is formed on a rear portion 5 of the cutter link 1 as viewed in the direction of travel 4. The cutter tooth 6 has a lateral cutting edge 7 that is disposed in the direction of travel 4, and also has a top cutter 8 that is disposed transverse to the direction of travel 4. The approximately vertical lateral cutting edge 7 adjoins, without a transition, the horizontal top cutter 8 that is disposed above the main body 2 transverse to the direction of travel 4.
Leading or moving ahead of the cutter tooth 6 is a depth gauge or limiter 10 that in the illustrated embodiment is formed on a front portion 9 of the main body 2 as viewed in the direction of travel 4. In this connection, the front portion 9 of the main body 2 is divided into DE 199 38 223.9 of 12 August 1999 and DE 199 40.497.6 of 26 March 1999 -Canada the support rib or element 11, which is disposed in the plane 13 of the main body 2, as well as a carrying rib or element 12 having a free end or material segment 14 which, as can be seen from Figs. 1 and 2, is bent away or to the side approximately perpendicular to the plane of the main body 2 relative to one longitudinal side 15 thereof. This longitudinal side 15 of the main body 2 faces the lateral cutting edge 7. The tang of the material segment 14 is bent away from the longitudinal side 16 toward the longitudinal side 15, with the bent away material segment 14 extending beyond the longitudinal side 15, as can be clearly seen in Fig.
2. The longitudinal edge 17 of the bent-away tang extends parallel to the direction of travel 4 and is spaced slightly by the amount "u" from the plane 32 of the lateral cutting edge 7 that is disposed parallel to the main body 2.
The support element 11 is disposed on that side of the front portion 9 of the main body 2 that faces the cutter tooth 6, and ends at a distance "v" below the top cutter 8. The free end face of the support element 11 forms a support surface 18, which preferably extends approximately parallel to a plane 20 of the cutter link 1 that extends through the center axes 19 of the rivet openings 3. The plane 20 is disposed approximately parallel to a guide surface 21 of a non-illustrated guide bar, upon which abutment surfaces 22 of the cutter link 1, i.e. of the main body 2 thereof, rest. With the saw chain connected, the cutter link 1 is moved along the guide surface 21 of the guide bar in the direction of travel 4.
In the embodiment illustrated in Figs. 1 and 2, a top surface 23 leads or moves ahead of the support surface 18 of the depth limiter 10. The top surface 23 is formed by the bent-away tang of the free end of the material segment 14 of the carrying element 12. The top surface 23, which preferably has a planar configuration, is expediently disposed approximately DE 199 38 223.9 of 12 August 1999 and DE 199 40.497.6 of 26 March 1999 -Canada parallel to the plane 20 defined by the center axes 19 of the rivet openings 3, whereby the top surface 23 is disposed lower than the support surface 18 by the amount "t".
The support surface 18 and the top surface 23 are thus surfaces on the cutter link 1 that are separated from one another, so that the support surface 18, in conformity with its application, can be set for limiting the thickness of the chip that is to be cut, whereas the top surface 23 serves for limiting the penetration depth of the support surface 18 in soft material at increased feed pressure or load and for this application can be configured independently of the configuration of the support surface 18. In so doing, the amount "t" is designed such that within the limit of a structurally prescribed band width, the user can vary the feed pressure utilized by him without the top surface 23 having to be used. Only if the user applies an inappropriately high feed pressure upon the cutter link 1 does the top surface 23 become effective in order to limit a deep penetration of the support surface 18 in the, for example, soft material that is being cut.
The shape and position of the support surface 18 is expediently such that in order to move the cutter link 1 in the material being cut, such as wood, only a slight feed pressure is necessary, whereby an effective limiting of the thickness of the chip to be cut is achieved.
Only if the cutter link is pressed too hard into the material being cut does the top surface 23 become effective, whereby at the same time the drive power necessary for moving the cutter link through the material is increased. The cutting efficiency drops, since the drive motor for moving the saw chain has only a limited output. The user will therefore reduce the feed pressure applied by him upon the saw chain, as a result of which only the support surface 18 becomes effective and a higher cutting efficiency results. The configuration of the depth limiter _g_ DE 199 38 223.9 of 12 August 1999 and DE 199 40.497.6 of 26 March 1999 -Canada thus holds the user to the proper guidance and handling of a power chain saw while providing a high cutting efficiency with a low tendency for kick back.
To achieve an appropriately large top surface 23, this top surface is wider than the support surface 18 in a direction transverse to the direction of travel 4. It can be expedient to make the top surface 23 longer than the support surface 18 in the direction of travel 4.
In order to compensate for the difference in height between the top surface 23 and the support surface 18, the width of which is determined by the thickness of the main body 2, a shoulder 28 is formed between the trailing edge 24 of the top surface 23 and the leading edge 26 of the support surface 18; the shoulder 28 is preferably rounded. The top surface 23 10 adjoins the leading edge 26 of the support surface 18, which leading edge is disposed transverse to the direction of travel 4, by means of the shoulder 28.
As shown in Fig. 1, the leading side 29 of the carrying element 12, together with the edge of the bent-away tang of the material segment 14, are beveled, resulting in a leading edge 30 on the side 20 below the tang 14.
The embodiment illustrated in Fig. 3 differs from that of Figs. 1 and 2 by the tang 14, which in this case is bent away in the direction toward the longitudinal side 16, with the free longitudinal edge 17 of the tang being spaced by the slight amount "a" from a plane 31 that extends parallel to the plane 13 of the main body 2 and through which extends the outermost edge of the top cutter 8. In other respects, the construction corresponds to that of the embodiment illustrated in Figs. 1 and 2, for which reason the same components are provided with the same reference numerals.
In the embodiment illustrated in Fig. 4, in contrast to the embodiment of Figs. 1 and 2 _g_ DE 199 38 223.9 of 12 August 1999 and DE 199 40.497.6 of 26 March 1999 -Canada the top surface is inclined in the direction of travel 4, whereby the leading edge 25, which is disposed transverse to the direction of travel 4, is disposed lower than the trailing edge 24 of the top surface 23. The leading edge 26 and the trailing edge 27 of the support surface 18 are disposed at the same level. With this configuration the top surface 23 has an increased utilization as a function of the feed pressure. In other words, the effective surface 23 of the top surface increases as the feed pressure increases. This can be advantageous in an appropriate application.
In the embodiment illustrated in Figs. 5 and 6, the depth limiter 10, which is composed of the support element 11 and the carrying element 12, is offset approximately parallel out of the plane 13 of the main body 2. In this way, the top surface 23 extends approximately from the plane 31, which contains the outer corner of the top cutter 8, to just before the plane 32, which is disposed on the other longitudinal side 15 of the main body 2, extends parallel to the plane 13 of the main body, and contains the outer edge of the lateral cutting edge 7. Due to the offset 33, the top surface 23 provides a support of the cutter tooth 6 that is effective over the entire cutting width B. The support surface 18 for limiting the thickness of the chip that is to be cut is again formed exclusively by the free end face of the support element 11 that is offset out of the plane 13 of the main body 2. The trailing edge 27 of the support surface 18, in other words the edge that faces the top cutter 8, is in this connection disposed at an angle to the direction of travel 4; in the embodiment illustrated in Fig. 6, the trailing edge 27 extends approximately parallel to the top cutter 8.
In the embodiment illustrated in Figs. 7 and 8, the top surface 23 is disposed between the cutter tooth 6 and the support surface 18. This configuration allows for a greater spacing DE 199 38 223.9 of 12 August 1999 and DE 199 40.497.6 of 26 March 1999 -Canada of the support surface 18 from the cutter tooth 6, which can be advantageous in conjunction with the size of the cutter tooth and the intended application.
As shown in Fig. 7, a rounded portion 34 adjoins the leading edge 26 and merges with the leading side 35 of the support element 11. The trailing edge 27, as can be seen in the top view of Fig. 8, is approximately aligned with the leading edge 25 of the top surface 23. In this connection, the top surface 23 drops in the direction of travel 4, so that its leading edge 25 is lower than the trailing edge 24.
It can be expedient for the top surface 23 to rise in the direction of travel 4, as illustrated in Fig. 9. In such an embodiment, the trailing edge 24 of the top surface 23 that faces the cutter tooth 6 is disposed lower than the leading edge 25 which, in a manner similar to that shown in the top view of Fig. 8, is aligned approximately with the trailing edge 27 of the support surface 18. In other respects, the embodiment of Fig. 9 corresponds to that of Figs. 7 and 8, so that the same reference numerals are used to indicate the same components.
In the embodiment illustrated in Fig. 10, the top surface 23 is disposed between the support surface 18 and the cutter tooth 6 such that the leading edge 25 of the top surface 23 is disposed on the same level as the trailing edge 27 of the support surface 18. As soon as the support surface penetrates soft material that is being cut, the top surface 23 immediately becomes effective, whereby due to the rise in the direction of travel, as the feed pressure increases a greater portion of the top surface 23 becomes effective. Such an embodiment can be expedient where extremely soft material is being cut.
In the embodiment illustrated in Fig. 12, in contrast to the embodiment of Figs. 10 and 11 the trailing edge 24 of the surface 23 is provided at the level of the plane of the support DE 199 38 223.9 of 12 August 1999 and DE 199 40.497.6 of 26 March 1999 -Canada surface 18. The trailing edge 24 is thus disposed at the same level as the leading edge 26 and trailing edge 27 of the support surface 18. In other respects the construction of the cutter link of Fig. 12 corresponds to that of Figs. 10 and 11, for which reason the same parts are designated by the same reference numerals.
It can also be expedient to associate with the support surface 18 both a leading top surface 36 as well as a trailing top surface 38, as shown in Figs. 13 and 14.
The two top surfaces 36 and 38 are preferably provided with the same width transverse to the direction of travel 4, whereby the length of the leading top surface 36 as measured in the direction of travel is expediently slightly greater than the length of the trailing top surface 38. As can be seen in Fig. 13, the trailing edge 40 of the leading top surface 36 is disposed by the distance "t" from the plane of the support surface 18, whereby, as shown in Fig. 14, the leading edge 26 of the support surface 18, when viewed in plan, is approximately aligned with the trailing edge 40 of the leading top surface 36. In this connection, the top surface 36 drops in the direction of travel 4, whereby its leading edge 41 is disposed lower than the plane of the trailing top surface 38. This top surface 38 is disposed approximately parallel to the plane 20 defined by the center axes 19 of the rivet opening 3, and is lower than the support surface 18 by the amount T. The amount T is greater than the amount "t"; in the illustrated embodiment, the amount T is approximately twice as great as the amount "t".
The leading edge 37 of the trailing top surface 38 is, as can be seen in the plan view of Fig. 14, approximately aligned with the trailing edge 27 of the support surface 18, with the trailing edge 39 of the trailing top surface 38 facing the cutter tooth 6.
Whereas in the embodiments of Figs. 1 to 14 the depth limiter 10 is provided with the DE 199 38 223.9 of 12 August 1999 and DE 199 40.497.6 of 26 March 1999 -Canada support surface 18 and top surface 23 or top surfaces 36 and 38 on the main body 2 of the cutter link 1, Fig. 15 shows an embodiment where the main body 2 is provided with the cutter tooth 6 and the support surface 18, while the top surface 23 is provided on another chain link that is adjacent to the cutter link 1. In Fig. 15, the top surface 23 is provided on the center link 45 of the connected saw chain. For this purpose, the center link 45 has an upright carrying element 12 that is disposed in the plane of the center link 45 and the free end of which forms the material segment 14 on which the top surface 23 is formed. In the embodiment of Fig. 15, the top surface 23 is achieved by deformation in the direction of the arrow 44, resulting in the top surface 23 which is wider transverse to the direction of travel of the saw chain. As shown in Fig. 15, the deformation is preferably effected symmetrically relative to the plane of the center link 45.
The cutter link 1, which is connected by a rivet 43 with the center link 45 and a side link 46, is provided merely with the support surface 18, which is disposed higher by the amount "t"
and which, as in the previous embodiments, is formed by the end face of the free end of a support element 11. The support element 11 is offset outwardly parallel to the plane 13 of the cutter link 1 and is disposed close to the lateral cutting edge 7, while the top surface 23 is spaced slightly to the side of the support surface 18. In this connection, the top surface 23 extends beyond the inner side 42 toward the side link 46. As viewed in plan, the top surface 23 is disposed next to the support surface 18 transverse to the direction of travel.
The embodiment illustrated in Fig. 16 corresponds fundamentally to the structure of Fig.
1, for which purpose the same components have the same reference numerals.
However, in contrast to the embodiment of Fig. 1 in this embodiment the top surface 23, similar to the DE 199 38 223.9 of 12 August 1999 and DE 199 40.497.6 of 26 March 1999 -Canada illustration in Fig. 15, is formed by a deformed material segment 14 that is formed on the end of the carrying element 12 of a front portion 9 of the main body 2 of the cutter link 1. The top surface 23 is thus possible not only by bending away the free, tang-like end of the material segment 14, but also by a deformation thereof, preferably in the direction of the arrow 44 as shown in Fig. 15.
The specification incorporates by reference the disclosure of German priority documents 199 38 223.9 of 12 August 1999 and 199 40 496.6 of 26 August 1999.
The present invention is, of course, in no way restricted to the specific disclosure of the specification and drawings, but also encompasses any modifications within the scope of the appended claims.
DE 199 38 223.9 of 12 August 1999 and DE 199 40.497.6 of 26 March 1999 -Canada
INTO A SUPPORT SURFACE AND A TOP SURFACE
Background of The Invention The present invention relates to a cutter link for the saw chain of a power chain saw, and includes a main body that has rivet openings for connection with other chain links of the saw chain. When viewed in the direction of travel, the main body has a front portion and a rear portion, wherein the rear portion is provided with a cutter tooth having a top cutter and a lateral cutting edge, and wherein the front portion is provided with a depth limiter having a top surface that faces away from the main body, with the depth limiter also having a support surface that is lower than the top cutter.
A cutter link of this general type is known from EP 0 712 700 A1, according to which the depth limiter is formed by a tab or tang of a front portion of the main body, with the tang being angled off transverse to the direction of travel of the cutter link. For this purpose, the carrying element of the depth limiter is first bent away toward that longitudinal side of the main body that is provided with the side cutter, with the free end section being bent back in the opposite direction by about 90°, so that it points toward the other longitudinal side of the main body.
To bend away that tang that forms the top surface of the depth limiter, the free end section of the carrying element must in the finished state have a length that corresponds to at least 1.5 times the thickness of the main body. As a consequence, the depth limiter necessarily has a minimum size that is dictated by the manufacturing process.
The top surface of the depth limiter drops off in the direction of travel, so that the higher edge fulfills a support function during a cutting process, and at the same time determines the chip or cutting thickness of the chip that is to be cut. In this connection, on the one hand a DE 199 38 223.9 of 12 August 1999 and DE 199 40.497.6 of 26 March 1999 -Canada reliable support is to be ensured, for which reason one has tried to keep the support surface large. On the other hand, due to the support on the material being cut, a large support surface increases the feed pressure that is necessary during the cutting process and causes the feed efficiency of the cutter link to drop so that the cutting efficiency also drops. Although a smaller support surface leads to a higher cutting efficiency with lower feed pressure, when a smaller support surface rests, for example, in soft wood then with increased feed pressure it penetrates very deeply into the material and can therefore no longer reliably ensure the function of limiting the chip thickness.
In order to achieve an acceptable compromise between the desired high cutting efficiency on the one hand and the reliable limitation of the chip thickness due to the depth limiter on the other hand, in the cutter link pursuant to EP 0 712 700 A1 the bent away tang of the depth limiter has a shape that is structurally complicated and expensive. For example, the trailing edge of the top surface that faces the cutter tooth is angled off in the direction of travel accompanied by the formation of a point that is directed toward the top cutter; also the free longitudinal edge of the depth limiter extends at an angle to the plane of the main body in such a way that the top surface tapers in the direction of travel.
It is therefore an object of the present invention to improve a cutter link having a depth limiter of the aforementioned general type in such a way that with a low structural and manufacturing expense a minimally required support surface is made available forthe effective limitation of the chip thickness, yet nonetheless excessive penetration of the support surface into soft material is reliably prevented.
Brief Description of the Drawings This object, and other objects and advantages of the present invention, will appear more DE 199 38 223.9 of 12 August 1999 and DE 199 40.497.6 of 26 March 1999 -Canada clearly from the following specification in conjunction with the accompanying schematic drawings, in which:
Fig. 1 is a side view of one exemplary embodiment of an inventive cutter link having a depth limiter;
Fig. 2 is a top view of the cutter link of Fig. 1;
Fig. 3 is a top view of a further exemplary embodiment of an inventive cutter link;
Fig. 4 is a side view similar to that of Fig. 1 of another exemplary embodiment of an inventive cutter link;
Fig. 5 is a side view of a cutter link having a depth limiter that is offset out of the plane of the main body;
Fig. 6 is a top view of the cutter link of Fig. 5;
Fig. 7 is a side view of an exemplary embodiment of a further inventive cutter link having a top surface disposed between the support surface and the cutter tooth;
Fig. 8 is a top view of the cutter link of Fig. 7;
Fig. 9 is a further exemplary embodiment of a cutter link similar to Fig. 7;
Fig. 10 is a side view of a further exemplary embodiment of an inventive cutter link with a top surface disposed between the support surface and the cutter tooth;
Fig. 11 is a top view of the cutter link of Fig. 10;
Fig. 12 is a side view of a cutter link having an edge of the top surface disposed DE 199 38 223.9 of 12 August 1999 and DE 199 40.497.6 of 26 March 1999 -Canada at the level of the support surface;
Fig. 13 is a side view of a cutter link having both a leading and trailing top surface in the direction of travel;
Fig. 14 is a top view of the cutter link of Fig. 13;
Fig. 15 is cross-sectional view through a saw chain having a top surface on the center link of the chain; and Fig. 16 is a cross-sectional view through a cutter link having a top surface formed by deformation of a material segment of the main body of the cutter link.
Summary of The Invention The cutter link of the present invention is characterized primarily in that the support surface and the top surface are surfaces that are separated from one another, wherein the support surface is formed by the end face of a support element of the cutter link that is disposed essentially parallel to the plane of the main body, wherein said top surface comprises a wider surface, approximately transverse to the direction of travel, of a material segment of a chain link, and wherein the top surface is lower than the support surface.
Embodying the support surface and the top surface separately enables their simple and different configuration, whereby to form the support surface different structural measures can be selected than for the formation of the top surface. For example, instead of a bending away a deformation of a material segment can also be advantageous for forming a wider top surface transverse to the direction of travel. In so doing, the otherwise necessary magnitude required for forming the support surface by bending away can be significantly reduced, so that simple structural means can be used to make a small support surface available that is adequate for DE 199 38 223.9 of 12 August 1999 and DE 199 40.497.6 of 26 March 1999 -Canada limiting the thickness of the chip that is to be cut and requires only a low feed power. In addition, the shape and position of the support surface can be selected independently of the shape and the position of the top surface, so that each support surface can be individually adapted to a particular application.
It should be emphasized that with the inventive configuration it is now also possible to easily limit the penetration depth of the support surface in a soft material by the position, configuration and size of the top surface without this having any effect upon the size and configuration of the support surface. In a simple manner the top surface is disposed lower than the support surface, so that with a designated use of the cutter link, i.e. a saw chain provided with the cutter link, merely the support surface rests against the material that is to be cut, as a result of which a high cutting efficiency is achieved with a low feed pressure. If the feed pressure of the cutter link into the material is improperly increased by the user, the support surface presses into the material, such as soft wood, whereby the top surface, which is disposed lower, effectively prevents a further penetration into the material that is to be cut.
Due to the arrangement of support surface and top surface at different levels, the user can, within a permissible band width, increase the pressure of the cutter link upon the material that is to be cut without the top surface coming into engagement and the cutting efficiency dropping. The drop off in cutting efficiency occurs only if due to an increased feed pressure the top surface comes to rest against the material that is to be cut, as a result of which the necessary drive power for the cutter link significantly increases. In a straightforward manner, the support surface is formed by the end face of a support rib or element on the main body that is disposed essentially parallel to the plane of the main body, and the top surface is DE 199 38 223.9 of 12 August 1999 and DE 199 40.497.6 of 26 March 1999 -Canada formed from a tang of a material segment of the main body of the cutter link, with the tang being angled off approximately transverse to the direction of travel. It can also be expedient to provide the support surface on the cutter link itself, and to form the top surface on a different chain link, for example the center link.
Further specific features of the present invention will be described in detail subsequently.
Description of Preferred Embodiments Referring now to the drawings in detail, the cutter link 1 illustrated in Figs. 1 and 2 is intended as a side link in a chain saw for a power chain saw. Saw chains are, of course, known, with the construction of one such chain being described in the aforementioned EP 0 712 700 A1.
The cutter link 1 comprises a main body 2, which has two rivet openings 3 for the connection of the cutter link 1 to further chain links. When the saw chain is connected, the cutter link 1 moves in the direction of travel 4, whereby a cutter tooth 6 is formed on a rear portion 5 of the cutter link 1 as viewed in the direction of travel 4. The cutter tooth 6 has a lateral cutting edge 7 that is disposed in the direction of travel 4, and also has a top cutter 8 that is disposed transverse to the direction of travel 4. The approximately vertical lateral cutting edge 7 adjoins, without a transition, the horizontal top cutter 8 that is disposed above the main body 2 transverse to the direction of travel 4.
Leading or moving ahead of the cutter tooth 6 is a depth gauge or limiter 10 that in the illustrated embodiment is formed on a front portion 9 of the main body 2 as viewed in the direction of travel 4. In this connection, the front portion 9 of the main body 2 is divided into DE 199 38 223.9 of 12 August 1999 and DE 199 40.497.6 of 26 March 1999 -Canada the support rib or element 11, which is disposed in the plane 13 of the main body 2, as well as a carrying rib or element 12 having a free end or material segment 14 which, as can be seen from Figs. 1 and 2, is bent away or to the side approximately perpendicular to the plane of the main body 2 relative to one longitudinal side 15 thereof. This longitudinal side 15 of the main body 2 faces the lateral cutting edge 7. The tang of the material segment 14 is bent away from the longitudinal side 16 toward the longitudinal side 15, with the bent away material segment 14 extending beyond the longitudinal side 15, as can be clearly seen in Fig.
2. The longitudinal edge 17 of the bent-away tang extends parallel to the direction of travel 4 and is spaced slightly by the amount "u" from the plane 32 of the lateral cutting edge 7 that is disposed parallel to the main body 2.
The support element 11 is disposed on that side of the front portion 9 of the main body 2 that faces the cutter tooth 6, and ends at a distance "v" below the top cutter 8. The free end face of the support element 11 forms a support surface 18, which preferably extends approximately parallel to a plane 20 of the cutter link 1 that extends through the center axes 19 of the rivet openings 3. The plane 20 is disposed approximately parallel to a guide surface 21 of a non-illustrated guide bar, upon which abutment surfaces 22 of the cutter link 1, i.e. of the main body 2 thereof, rest. With the saw chain connected, the cutter link 1 is moved along the guide surface 21 of the guide bar in the direction of travel 4.
In the embodiment illustrated in Figs. 1 and 2, a top surface 23 leads or moves ahead of the support surface 18 of the depth limiter 10. The top surface 23 is formed by the bent-away tang of the free end of the material segment 14 of the carrying element 12. The top surface 23, which preferably has a planar configuration, is expediently disposed approximately DE 199 38 223.9 of 12 August 1999 and DE 199 40.497.6 of 26 March 1999 -Canada parallel to the plane 20 defined by the center axes 19 of the rivet openings 3, whereby the top surface 23 is disposed lower than the support surface 18 by the amount "t".
The support surface 18 and the top surface 23 are thus surfaces on the cutter link 1 that are separated from one another, so that the support surface 18, in conformity with its application, can be set for limiting the thickness of the chip that is to be cut, whereas the top surface 23 serves for limiting the penetration depth of the support surface 18 in soft material at increased feed pressure or load and for this application can be configured independently of the configuration of the support surface 18. In so doing, the amount "t" is designed such that within the limit of a structurally prescribed band width, the user can vary the feed pressure utilized by him without the top surface 23 having to be used. Only if the user applies an inappropriately high feed pressure upon the cutter link 1 does the top surface 23 become effective in order to limit a deep penetration of the support surface 18 in the, for example, soft material that is being cut.
The shape and position of the support surface 18 is expediently such that in order to move the cutter link 1 in the material being cut, such as wood, only a slight feed pressure is necessary, whereby an effective limiting of the thickness of the chip to be cut is achieved.
Only if the cutter link is pressed too hard into the material being cut does the top surface 23 become effective, whereby at the same time the drive power necessary for moving the cutter link through the material is increased. The cutting efficiency drops, since the drive motor for moving the saw chain has only a limited output. The user will therefore reduce the feed pressure applied by him upon the saw chain, as a result of which only the support surface 18 becomes effective and a higher cutting efficiency results. The configuration of the depth limiter _g_ DE 199 38 223.9 of 12 August 1999 and DE 199 40.497.6 of 26 March 1999 -Canada thus holds the user to the proper guidance and handling of a power chain saw while providing a high cutting efficiency with a low tendency for kick back.
To achieve an appropriately large top surface 23, this top surface is wider than the support surface 18 in a direction transverse to the direction of travel 4. It can be expedient to make the top surface 23 longer than the support surface 18 in the direction of travel 4.
In order to compensate for the difference in height between the top surface 23 and the support surface 18, the width of which is determined by the thickness of the main body 2, a shoulder 28 is formed between the trailing edge 24 of the top surface 23 and the leading edge 26 of the support surface 18; the shoulder 28 is preferably rounded. The top surface 23 10 adjoins the leading edge 26 of the support surface 18, which leading edge is disposed transverse to the direction of travel 4, by means of the shoulder 28.
As shown in Fig. 1, the leading side 29 of the carrying element 12, together with the edge of the bent-away tang of the material segment 14, are beveled, resulting in a leading edge 30 on the side 20 below the tang 14.
The embodiment illustrated in Fig. 3 differs from that of Figs. 1 and 2 by the tang 14, which in this case is bent away in the direction toward the longitudinal side 16, with the free longitudinal edge 17 of the tang being spaced by the slight amount "a" from a plane 31 that extends parallel to the plane 13 of the main body 2 and through which extends the outermost edge of the top cutter 8. In other respects, the construction corresponds to that of the embodiment illustrated in Figs. 1 and 2, for which reason the same components are provided with the same reference numerals.
In the embodiment illustrated in Fig. 4, in contrast to the embodiment of Figs. 1 and 2 _g_ DE 199 38 223.9 of 12 August 1999 and DE 199 40.497.6 of 26 March 1999 -Canada the top surface is inclined in the direction of travel 4, whereby the leading edge 25, which is disposed transverse to the direction of travel 4, is disposed lower than the trailing edge 24 of the top surface 23. The leading edge 26 and the trailing edge 27 of the support surface 18 are disposed at the same level. With this configuration the top surface 23 has an increased utilization as a function of the feed pressure. In other words, the effective surface 23 of the top surface increases as the feed pressure increases. This can be advantageous in an appropriate application.
In the embodiment illustrated in Figs. 5 and 6, the depth limiter 10, which is composed of the support element 11 and the carrying element 12, is offset approximately parallel out of the plane 13 of the main body 2. In this way, the top surface 23 extends approximately from the plane 31, which contains the outer corner of the top cutter 8, to just before the plane 32, which is disposed on the other longitudinal side 15 of the main body 2, extends parallel to the plane 13 of the main body, and contains the outer edge of the lateral cutting edge 7. Due to the offset 33, the top surface 23 provides a support of the cutter tooth 6 that is effective over the entire cutting width B. The support surface 18 for limiting the thickness of the chip that is to be cut is again formed exclusively by the free end face of the support element 11 that is offset out of the plane 13 of the main body 2. The trailing edge 27 of the support surface 18, in other words the edge that faces the top cutter 8, is in this connection disposed at an angle to the direction of travel 4; in the embodiment illustrated in Fig. 6, the trailing edge 27 extends approximately parallel to the top cutter 8.
In the embodiment illustrated in Figs. 7 and 8, the top surface 23 is disposed between the cutter tooth 6 and the support surface 18. This configuration allows for a greater spacing DE 199 38 223.9 of 12 August 1999 and DE 199 40.497.6 of 26 March 1999 -Canada of the support surface 18 from the cutter tooth 6, which can be advantageous in conjunction with the size of the cutter tooth and the intended application.
As shown in Fig. 7, a rounded portion 34 adjoins the leading edge 26 and merges with the leading side 35 of the support element 11. The trailing edge 27, as can be seen in the top view of Fig. 8, is approximately aligned with the leading edge 25 of the top surface 23. In this connection, the top surface 23 drops in the direction of travel 4, so that its leading edge 25 is lower than the trailing edge 24.
It can be expedient for the top surface 23 to rise in the direction of travel 4, as illustrated in Fig. 9. In such an embodiment, the trailing edge 24 of the top surface 23 that faces the cutter tooth 6 is disposed lower than the leading edge 25 which, in a manner similar to that shown in the top view of Fig. 8, is aligned approximately with the trailing edge 27 of the support surface 18. In other respects, the embodiment of Fig. 9 corresponds to that of Figs. 7 and 8, so that the same reference numerals are used to indicate the same components.
In the embodiment illustrated in Fig. 10, the top surface 23 is disposed between the support surface 18 and the cutter tooth 6 such that the leading edge 25 of the top surface 23 is disposed on the same level as the trailing edge 27 of the support surface 18. As soon as the support surface penetrates soft material that is being cut, the top surface 23 immediately becomes effective, whereby due to the rise in the direction of travel, as the feed pressure increases a greater portion of the top surface 23 becomes effective. Such an embodiment can be expedient where extremely soft material is being cut.
In the embodiment illustrated in Fig. 12, in contrast to the embodiment of Figs. 10 and 11 the trailing edge 24 of the surface 23 is provided at the level of the plane of the support DE 199 38 223.9 of 12 August 1999 and DE 199 40.497.6 of 26 March 1999 -Canada surface 18. The trailing edge 24 is thus disposed at the same level as the leading edge 26 and trailing edge 27 of the support surface 18. In other respects the construction of the cutter link of Fig. 12 corresponds to that of Figs. 10 and 11, for which reason the same parts are designated by the same reference numerals.
It can also be expedient to associate with the support surface 18 both a leading top surface 36 as well as a trailing top surface 38, as shown in Figs. 13 and 14.
The two top surfaces 36 and 38 are preferably provided with the same width transverse to the direction of travel 4, whereby the length of the leading top surface 36 as measured in the direction of travel is expediently slightly greater than the length of the trailing top surface 38. As can be seen in Fig. 13, the trailing edge 40 of the leading top surface 36 is disposed by the distance "t" from the plane of the support surface 18, whereby, as shown in Fig. 14, the leading edge 26 of the support surface 18, when viewed in plan, is approximately aligned with the trailing edge 40 of the leading top surface 36. In this connection, the top surface 36 drops in the direction of travel 4, whereby its leading edge 41 is disposed lower than the plane of the trailing top surface 38. This top surface 38 is disposed approximately parallel to the plane 20 defined by the center axes 19 of the rivet opening 3, and is lower than the support surface 18 by the amount T. The amount T is greater than the amount "t"; in the illustrated embodiment, the amount T is approximately twice as great as the amount "t".
The leading edge 37 of the trailing top surface 38 is, as can be seen in the plan view of Fig. 14, approximately aligned with the trailing edge 27 of the support surface 18, with the trailing edge 39 of the trailing top surface 38 facing the cutter tooth 6.
Whereas in the embodiments of Figs. 1 to 14 the depth limiter 10 is provided with the DE 199 38 223.9 of 12 August 1999 and DE 199 40.497.6 of 26 March 1999 -Canada support surface 18 and top surface 23 or top surfaces 36 and 38 on the main body 2 of the cutter link 1, Fig. 15 shows an embodiment where the main body 2 is provided with the cutter tooth 6 and the support surface 18, while the top surface 23 is provided on another chain link that is adjacent to the cutter link 1. In Fig. 15, the top surface 23 is provided on the center link 45 of the connected saw chain. For this purpose, the center link 45 has an upright carrying element 12 that is disposed in the plane of the center link 45 and the free end of which forms the material segment 14 on which the top surface 23 is formed. In the embodiment of Fig. 15, the top surface 23 is achieved by deformation in the direction of the arrow 44, resulting in the top surface 23 which is wider transverse to the direction of travel of the saw chain. As shown in Fig. 15, the deformation is preferably effected symmetrically relative to the plane of the center link 45.
The cutter link 1, which is connected by a rivet 43 with the center link 45 and a side link 46, is provided merely with the support surface 18, which is disposed higher by the amount "t"
and which, as in the previous embodiments, is formed by the end face of the free end of a support element 11. The support element 11 is offset outwardly parallel to the plane 13 of the cutter link 1 and is disposed close to the lateral cutting edge 7, while the top surface 23 is spaced slightly to the side of the support surface 18. In this connection, the top surface 23 extends beyond the inner side 42 toward the side link 46. As viewed in plan, the top surface 23 is disposed next to the support surface 18 transverse to the direction of travel.
The embodiment illustrated in Fig. 16 corresponds fundamentally to the structure of Fig.
1, for which purpose the same components have the same reference numerals.
However, in contrast to the embodiment of Fig. 1 in this embodiment the top surface 23, similar to the DE 199 38 223.9 of 12 August 1999 and DE 199 40.497.6 of 26 March 1999 -Canada illustration in Fig. 15, is formed by a deformed material segment 14 that is formed on the end of the carrying element 12 of a front portion 9 of the main body 2 of the cutter link 1. The top surface 23 is thus possible not only by bending away the free, tang-like end of the material segment 14, but also by a deformation thereof, preferably in the direction of the arrow 44 as shown in Fig. 15.
The specification incorporates by reference the disclosure of German priority documents 199 38 223.9 of 12 August 1999 and 199 40 496.6 of 26 August 1999.
The present invention is, of course, in no way restricted to the specific disclosure of the specification and drawings, but also encompasses any modifications within the scope of the appended claims.
DE 199 38 223.9 of 12 August 1999 and DE 199 40.497.6 of 26 March 1999 -Canada
Claims (20)
1. A cutter link for the saw chain of a power chain saw, comprising:
a main body having rivet openings for connection with other chain links of a saw chain, wherein when viewed in a direction of travel, said main body has a front portion and a rear portion, wherein said rear portion is provided with a cutter tooth having a top cutter and a lateral cutting edge, wherein said front portion is provided with a depth limiter having a top surface that faces away from said main body, wherein said depth limiter also has a support surface that is lower than said top cutter, wherein said support surface and said top surface are surfaces that are separated from one another, wherein said support surface is formed by an end face of a support element that is disposed essentially parallel to a plane of said main body, wherein said top surface is disposed on the same or a different chain link and comprises a wider surface, approximately transverse to said direction of travel, of a material segment of its chain link, and wherein said top surface is lower than said support surface.
a main body having rivet openings for connection with other chain links of a saw chain, wherein when viewed in a direction of travel, said main body has a front portion and a rear portion, wherein said rear portion is provided with a cutter tooth having a top cutter and a lateral cutting edge, wherein said front portion is provided with a depth limiter having a top surface that faces away from said main body, wherein said depth limiter also has a support surface that is lower than said top cutter, wherein said support surface and said top surface are surfaces that are separated from one another, wherein said support surface is formed by an end face of a support element that is disposed essentially parallel to a plane of said main body, wherein said top surface is disposed on the same or a different chain link and comprises a wider surface, approximately transverse to said direction of travel, of a material segment of its chain link, and wherein said top surface is lower than said support surface.
2. A cutter link according to claim 1, wherein said top surface is formed on said front portion of said main body of said cutter link.
3. A cutter link according to claim 1, wherein said top surface comprises a material segment that is angled off approximately transverse to said direction of travel.
4. A cutter link according to claim 1, wherein said top surface is formed by a deformed material segment.
5. A cutter link according to claim 1, wherein said support surface is disposed approximately parallel to a plane defined by center axes of said rivet openings.
6. A cutter link according to claim 1, wherein said top surface is disposed approximately parallel to a plane defined by center axes of said rivet openings.
7. A cutter link according to claim 1, wherein said top surface leads said support surface in said direction of travel.
8. A cutter link according to claim 1, wherein said top surface is disposed between said cutter tooth and said support surface.
9. A cutter link according to claim 1, wherein a shoulder is provided, and wherein said top surface adjoins an edge of said support surface that is disposed transverse to said direction of travel by means of said shoulder.
10. A cutter link according to claim 9, wherein said shoulder is rounded.
11. A cutter link according to claim 1, wherein an edge of said top surface that is disposed transverse to said direction of travel is disposed at the level of a plane of said support surface.
12. A cutter link according to claim 1, wherein an edge of said top surface that is disposed at the level of a plane of said support surface is a trailing edge of said top surface.
13. A cutter link according to claim 1, wherein said top surface rises in said direction of travel such that a trailing edge of said top surface that is disposed transverse to said direction of travel is lower than a leading edge of said top surface.
14. A cutter link according to claim 1, wherein said top surface drops off in said direction of travel in such a way that a leading edge of said top surface that is disposed transverse to said direction of travel is lower than a trailing edge of said top surface.
15. A cutter link according to claim 1, wherein said main body is provided with a tang that is angled off to a longitudinal side of said main body that is provided with said lateral cutting edge.
16. A cutter link according to claim 1, wherein said support element is provided on a portion of said main body that is offset approximately parallel out of a plane of said main body.
17. A cutter link according to claim 1, wherein said support surface adjoins both a leading top surface as well as a trailing top surface.
18. A cutter link according to claim 17, wherein a trailing edge of said leading top surface is higher than a leading edge of said trailing top surface.
19. A cutter link according to claim 17, wherein said leading top surface drops off in said direction of travel.
20. A cutter link according to claim 17, wherein said trailing top surface is disposed approximately parallel to a plane defined by center axes of said rivet openings.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19938223.9 | 1999-08-12 | ||
| DE19938223 | 1999-08-12 | ||
| DE19940497.6 | 1999-08-26 | ||
| DE19940497A DE19940497A1 (en) | 1999-08-12 | 1999-08-26 | Cutting element with a depth limiter divided into the support surface and roof surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2315578A1 true CA2315578A1 (en) | 2001-02-12 |
Family
ID=26054580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2315578 Abandoned CA2315578A1 (en) | 1999-08-12 | 2000-08-11 | Cutter link having a depth limiter divided into a support surface and a top surface |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2001062804A (en) |
| CA (1) | CA2315578A1 (en) |
| FR (1) | FR2797409A1 (en) |
| SE (1) | SE524902C2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0112199D0 (en) * | 2001-05-18 | 2001-07-11 | Avocet Engineering Services Lt | Spinal column separation |
| WO2016139582A1 (en) * | 2015-03-04 | 2016-09-09 | Husqvarna Ab | Chainsaw chain design for maintaining grinding level |
| EP3392007B1 (en) * | 2017-04-20 | 2022-06-08 | Andreas Stihl AG & Co. KG | Cutting member of a saw chain, saw chain having a cutting member and file for filing the cutting teeth of a saw chain |
| US11007589B2 (en) | 2017-04-20 | 2021-05-18 | Andreas Stihl Ag & Co. Kg | File for filing the cutting tooth of a saw chain |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE325699B (en) * | 1968-04-02 | 1970-07-06 | Sandvikens Jernverks Ab | |
| US4625610A (en) * | 1985-11-04 | 1986-12-02 | Omark Industries, Inc. | Cutting chain having automatic sharpening |
-
2000
- 2000-08-09 FR FR0010470A patent/FR2797409A1/en active Pending
- 2000-08-10 SE SE0002863A patent/SE524902C2/en not_active IP Right Cessation
- 2000-08-11 CA CA 2315578 patent/CA2315578A1/en not_active Abandoned
- 2000-08-14 JP JP2000245710A patent/JP2001062804A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| SE0002863D0 (en) | 2000-08-10 |
| JP2001062804A (en) | 2001-03-13 |
| FR2797409A1 (en) | 2001-02-16 |
| SE0002863L (en) | 2001-02-13 |
| SE524902C2 (en) | 2004-10-19 |
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| FZDE | Dead |