CA1216545A - Wood sorting apparatus - Google Patents
Wood sorting apparatusInfo
- Publication number
- CA1216545A CA1216545A CA000419190A CA419190A CA1216545A CA 1216545 A CA1216545 A CA 1216545A CA 000419190 A CA000419190 A CA 000419190A CA 419190 A CA419190 A CA 419190A CA 1216545 A CA1216545 A CA 1216545A
- Authority
- CA
- Canada
- Prior art keywords
- members
- free end
- guide arm
- locking means
- drum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/04—Sorting according to size
- B07C5/12—Sorting according to size characterised by the application to particular articles, not otherwise provided for
- B07C5/14—Sorting timber or logs, e.g. tree trunks, beams, planks or the like
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Forests & Forestry (AREA)
- Sorting Of Articles (AREA)
- Collation Of Sheets And Webs (AREA)
- Discharge Of Articles From Conveyors (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
ABSTRACT
A wood sorting apparatus comprises a plurality of compartments arranged to receive wood from a conveyor located above the compartments, each of the compartments being provided with an openable receiving or bottom part comprising at least two flexible members, and each of the members being arranged to co-act on one side of a compartment with a drum arranged to take-up and pay-out respective ones of the members, and each of the members being passed over a guide arm arranged on the same side as the drum. Respective free ends of the members on the other side of the compartment are arranged to co-act with a lock-ing means, and the drum is arranged to co-act with the guide arm in a manner such that, at the end phase of a member take-up operation, the guide arm is caused to swing upwardly in a direction towards the locking means arranged on the opposite side of said compartment, for releasable co-action of the locking means with the free end of respective members. The object of the invention is to provide a simplified construction by means of which a locking effect is obtained between that end of the belt guided by the locking means and the locking means. To this end it is proposed that a) the free end of respective members in the working phase when the guide arm moves upwardly, has a length such that it hangs freely outside the free end of respective guide arms, and that the free end of the flexible members have at least two mutually spaced stop means; b) that the guide arm is arranged, in an optimally substantially horizontal position, to abut its free end within a space defined by the locking means, the space being arranged to accommodate at least the outermost stop means and exhibits means forming a clamp for the free end of the member in a wood-receiving position.
A wood sorting apparatus comprises a plurality of compartments arranged to receive wood from a conveyor located above the compartments, each of the compartments being provided with an openable receiving or bottom part comprising at least two flexible members, and each of the members being arranged to co-act on one side of a compartment with a drum arranged to take-up and pay-out respective ones of the members, and each of the members being passed over a guide arm arranged on the same side as the drum. Respective free ends of the members on the other side of the compartment are arranged to co-act with a lock-ing means, and the drum is arranged to co-act with the guide arm in a manner such that, at the end phase of a member take-up operation, the guide arm is caused to swing upwardly in a direction towards the locking means arranged on the opposite side of said compartment, for releasable co-action of the locking means with the free end of respective members. The object of the invention is to provide a simplified construction by means of which a locking effect is obtained between that end of the belt guided by the locking means and the locking means. To this end it is proposed that a) the free end of respective members in the working phase when the guide arm moves upwardly, has a length such that it hangs freely outside the free end of respective guide arms, and that the free end of the flexible members have at least two mutually spaced stop means; b) that the guide arm is arranged, in an optimally substantially horizontal position, to abut its free end within a space defined by the locking means, the space being arranged to accommodate at least the outermost stop means and exhibits means forming a clamp for the free end of the member in a wood-receiving position.
Description
The p:resent invention ~elates -to a wood sortiny apparatus of the kind which includes a plurality of compartments arranged to receive wood from a conveyor located above the compartments, each of the compartments being provided with an openable receiving or bottom part which compri.ses at least two flexible members, each of which members is arranged to co-act on one side of a compartment with a drum for taking-up and paying-out said members, and each of which members is passed over a guide arm arranged on the same sîde as said drum. The respective free ends of the members on the other side of the compartment are arranged to co-act with a locking means, and the drum is arranged to co~act with the guide arm in a manner such that the guide arm at the end phase of a member take-up operation is imparted with an upward swinging movement in a direction towards the locking means arranged on the opposite side of the compartment, for releasable co~action with the free end of a respective member.
One such apparatus is described and illustrated in principle in the Swedish Published Specification 347,720, although with the difference that the known apparatus is particularly intended for use with forestry vehicles.
~ nother known apparatus incorporating -the principle of flexible wood-receiving members is reflected in the Swedish Published Specification 7703110-2. In both of these cases the receiving members can be released from locking means, and separate means are provided to enable the end parts of the receiving members to be detachably connected to the locking means.
The Published Specification 7703110-~ describes .6~i~5 positive means Eor causing thc end oE a Elexib:Le member to co-ac-t with the locking means, namely an encl portion ~Ihich extends displaceably across a compar-tment and which carries said flexible member. Al-though such an arranyement func~ons well in practice, it is expensive to provide, since various drive sources must be used. The necessary transmission means also gives rise to sources of dlsturbance.
Distinct from Swedish Specification 7703110 2, the Swedish Published Specification 347,720 gives no definite indication as to how the free end of the receiving member is caused to co-act with the locking means, which in itself is not clearly described. As will be ~mderstood, one of normal skill in this art would find it difficult to construct a ~unctional apparatus with the information obtained in this Publication.
` Starting wi~h the apparatus as described in the first paragraph, the object of the present invention is to improve that part of the wood sorting apparatus which concerns the co-action between the free end of the receiving member and the locking means. To this end it is proposed in accordance with the invention that aj the free end of respective members in the working phase when the guide arm moves upwardly is of such length that it hangs freely outside the free end of the respective guide arm, and that the free end of the respective members is provided with at least two, mutually spaced stop means; b) the guide arm is arranged, in an optimally, substantially horizontal position, to abut its free end within a space defined by the locklng means;
and that said space is arranged to accommodate at least the distal stop means and also exhibits means which form a clamp lock for the free end of said member ln a wood-receiving position.
It has surprisingly been found that the aforedescribed combination not only provides a less expensive apparatus which is extremely reliable in operation, but that it can also be fully automated.
A preferred embodiment of the invention will now be described with reference to the accompanying drawings, in which:
Figure 1 is a top plan view of a wood sorting apparatus according to the invention;
Figure 2 is a side view of the apparatus taken on the line II-II in Figure l;
Figure 2a is similar to the view of Figure 2/ but shows the apparatus in a di~ferent working stage;
Figure 3 is an enlarged view of a locking means and an end portion of a guide arm, and also shows the end of a flexible receiving belt co-acting with said end portion.
The compartment for collecting wood from an overlying conveyor (not shown) illustrated in Figure 1 comprises, in a manner known per se, a plurality of vertical posts 10, which are connected together by two mutually spaced support beams 11, 12.
The space between the support beams 11, 12 forms the wood-collecting compartment. The compartment is provided with wood receiving means in the form of flexible belts 13. The apparatus should be provided with at least two such belts, although the illustrated embodiment has four.
Arranged in mutually spaced relationship on the carrier ~2~
beam 11 are beam-like bearing attachments 14, which ~arry a similar number of bearing housings 15. Passing through the bearing housings 15 is a rotatable shaft 17 driven by an electric , motor 16. The belts 13 are arranged to be taken-up on and paid-out from drums 18 fixedly connected to the shaft 17.
,~ Each drum 18 is embraced by one end of a guide arm 19, which is freely rotatable on the shaft 17 and which, in the vicinity of its other end, is provided with two mutually opposed shoulders 20, 21, (see Figure 3) between which the belt 13 is arranged to be guided. The ~orward end of ~he guide arm has a rounded shoulder 22, over which the belt 13 is passed. Arranged in spaced relationship on the free end of each belt 13 are two stop means 23, 24. The inner of these stop means is arranged to , abut the shoulders 20, 21, as described in more detail herein-`~ after.
The opposite support beam 12 carries a plurality of ~, locking means 25, the structural design of which can best be seen from Figure 3, the locking means being arranged to co-act with the guide arms 19. A locking means 25 presents a space which is open towards a drum 18 and which is defined by a rear abutment surface 26, an upper abutment surface 27, and two side walls 28. Arranged in the side walls is a bore 29, which is oriented at a distance from the outer edges of the side walls.
The rear edges of the locking means 25 have a shape which is complimentary to that of the, beam 12 (Figure 2). The beam 12 is provided with supports 30 for a longitudinally extending axle 31, which can be moved in the horizontal plane by ~6~
means of a pneumatic cylinder 32.
The axle 31 has fixedly arranged attachment means 33, the free ends of which are fixedly connected to locking shafts 34 which extend parallel with the axle 31. The locking shafts 34 are arranged to co-act with the bores 29 in the walls 2~ of the locking means 25.
Figure 2a illustrates the apparatus when the belt 13 is released from -the locking means 25. When the drum 18 rotates clockwise, the belt 13 is taken-up, until the inner stop means 24 of the stop means of the belt 13 is brought into abutment with the shoulders 20, 21 of the guide arms 19. The guide arm 19, freely rotatable on the shaft 17, is then caused to move upwardly towards the locking means 25. In the optimally extended position of the belt 13, the free end of the belt and the outermost stop means 23 lie outside the free end of the guide arm 19. The free end of the guide arm 19 and the locking means 25 are so arranged re]ative to one another that upward pivo-ting of the guide arm is restricted by the upper surface 27 of ~he locking means 25. At the moment when contact is made, the free end of the belt is guided into abutment with the rear movement limiting surface 27, and the stop means 23 of the belt will be located downwardly of and inwardly of the bore 29 (Figure 3). When the axle 31 connected to the air cylinder 32 is displaced forwardly, the locking shaft 3~, co-acting with axle 31, is mo~ed through the bores 29 in the walls 28 of the locking means 25. The rear movement-limiting surface 26 of the locking means 25, and the shaft 34 form a clamp lock for the stop means 23, and therewith ~2~
the belt 13. By reversing the motox 16, the belt 13 is unwound from the drum 18, therewith returning the guide arm to a substantially vertical position When the compartment is filled with wood, the shaft 34 is activated and relcases the free end of the belt 13 from the locking means 25. The belt 13 is then again taken-up on the drum 18, whereafter the said end of the belt is again brought into contact with the locking means 25, in the aforedescribed manner.
It has been found an advantage -to make the free end portion of the belt 13 more rigid than the remainder of the belt.
In accordance with a preferred embodiment, this free end portion of the belt can be given double-belt thickness, for example by folding the belt back onto itself, and the stop means, which have a length equal to that of the width of the belt, can be anchored between two such portions of the belt sewn together. Because of its stiffer construction, the free end of the belt will strive to take a horizontal position as the guide arm moves upwardly, facilitating abutment of said belt end against the rear abutment surface 26 of the locking means 25.
As will be understood, the free end of the belt can also be stiffened by fixing simple, flexible metal elements thereto, such as springs.
It would seem essential, however, that the outmost end of the guide arm l9 at the moment of engagement with the upper restricting surface 27 of the locking means 25 is located as close to the periphery of the bore 29 as possible, i.e. in each case so that the shaft 34 can be freely guided into the bores 29, and that the freely hanying belt end is of sufficient length.
The horizontal locking shaft 34 is advantageous from the aspect of safety, because the forces acting vertically when the belt 13 is loaded are taken-up by the loc]cing means 25~ By providing the upper abutment surface 27 of the locking means 25 with sensing means r it is possible to automate forward movement oE the locklng shaft 34.
\
,~
.~
One such apparatus is described and illustrated in principle in the Swedish Published Specification 347,720, although with the difference that the known apparatus is particularly intended for use with forestry vehicles.
~ nother known apparatus incorporating -the principle of flexible wood-receiving members is reflected in the Swedish Published Specification 7703110-2. In both of these cases the receiving members can be released from locking means, and separate means are provided to enable the end parts of the receiving members to be detachably connected to the locking means.
The Published Specification 7703110-~ describes .6~i~5 positive means Eor causing thc end oE a Elexib:Le member to co-ac-t with the locking means, namely an encl portion ~Ihich extends displaceably across a compar-tment and which carries said flexible member. Al-though such an arranyement func~ons well in practice, it is expensive to provide, since various drive sources must be used. The necessary transmission means also gives rise to sources of dlsturbance.
Distinct from Swedish Specification 7703110 2, the Swedish Published Specification 347,720 gives no definite indication as to how the free end of the receiving member is caused to co-act with the locking means, which in itself is not clearly described. As will be ~mderstood, one of normal skill in this art would find it difficult to construct a ~unctional apparatus with the information obtained in this Publication.
` Starting wi~h the apparatus as described in the first paragraph, the object of the present invention is to improve that part of the wood sorting apparatus which concerns the co-action between the free end of the receiving member and the locking means. To this end it is proposed in accordance with the invention that aj the free end of respective members in the working phase when the guide arm moves upwardly is of such length that it hangs freely outside the free end of the respective guide arm, and that the free end of the respective members is provided with at least two, mutually spaced stop means; b) the guide arm is arranged, in an optimally, substantially horizontal position, to abut its free end within a space defined by the locklng means;
and that said space is arranged to accommodate at least the distal stop means and also exhibits means which form a clamp lock for the free end of said member ln a wood-receiving position.
It has surprisingly been found that the aforedescribed combination not only provides a less expensive apparatus which is extremely reliable in operation, but that it can also be fully automated.
A preferred embodiment of the invention will now be described with reference to the accompanying drawings, in which:
Figure 1 is a top plan view of a wood sorting apparatus according to the invention;
Figure 2 is a side view of the apparatus taken on the line II-II in Figure l;
Figure 2a is similar to the view of Figure 2/ but shows the apparatus in a di~ferent working stage;
Figure 3 is an enlarged view of a locking means and an end portion of a guide arm, and also shows the end of a flexible receiving belt co-acting with said end portion.
The compartment for collecting wood from an overlying conveyor (not shown) illustrated in Figure 1 comprises, in a manner known per se, a plurality of vertical posts 10, which are connected together by two mutually spaced support beams 11, 12.
The space between the support beams 11, 12 forms the wood-collecting compartment. The compartment is provided with wood receiving means in the form of flexible belts 13. The apparatus should be provided with at least two such belts, although the illustrated embodiment has four.
Arranged in mutually spaced relationship on the carrier ~2~
beam 11 are beam-like bearing attachments 14, which ~arry a similar number of bearing housings 15. Passing through the bearing housings 15 is a rotatable shaft 17 driven by an electric , motor 16. The belts 13 are arranged to be taken-up on and paid-out from drums 18 fixedly connected to the shaft 17.
,~ Each drum 18 is embraced by one end of a guide arm 19, which is freely rotatable on the shaft 17 and which, in the vicinity of its other end, is provided with two mutually opposed shoulders 20, 21, (see Figure 3) between which the belt 13 is arranged to be guided. The ~orward end of ~he guide arm has a rounded shoulder 22, over which the belt 13 is passed. Arranged in spaced relationship on the free end of each belt 13 are two stop means 23, 24. The inner of these stop means is arranged to , abut the shoulders 20, 21, as described in more detail herein-`~ after.
The opposite support beam 12 carries a plurality of ~, locking means 25, the structural design of which can best be seen from Figure 3, the locking means being arranged to co-act with the guide arms 19. A locking means 25 presents a space which is open towards a drum 18 and which is defined by a rear abutment surface 26, an upper abutment surface 27, and two side walls 28. Arranged in the side walls is a bore 29, which is oriented at a distance from the outer edges of the side walls.
The rear edges of the locking means 25 have a shape which is complimentary to that of the, beam 12 (Figure 2). The beam 12 is provided with supports 30 for a longitudinally extending axle 31, which can be moved in the horizontal plane by ~6~
means of a pneumatic cylinder 32.
The axle 31 has fixedly arranged attachment means 33, the free ends of which are fixedly connected to locking shafts 34 which extend parallel with the axle 31. The locking shafts 34 are arranged to co-act with the bores 29 in the walls 2~ of the locking means 25.
Figure 2a illustrates the apparatus when the belt 13 is released from -the locking means 25. When the drum 18 rotates clockwise, the belt 13 is taken-up, until the inner stop means 24 of the stop means of the belt 13 is brought into abutment with the shoulders 20, 21 of the guide arms 19. The guide arm 19, freely rotatable on the shaft 17, is then caused to move upwardly towards the locking means 25. In the optimally extended position of the belt 13, the free end of the belt and the outermost stop means 23 lie outside the free end of the guide arm 19. The free end of the guide arm 19 and the locking means 25 are so arranged re]ative to one another that upward pivo-ting of the guide arm is restricted by the upper surface 27 of ~he locking means 25. At the moment when contact is made, the free end of the belt is guided into abutment with the rear movement limiting surface 27, and the stop means 23 of the belt will be located downwardly of and inwardly of the bore 29 (Figure 3). When the axle 31 connected to the air cylinder 32 is displaced forwardly, the locking shaft 3~, co-acting with axle 31, is mo~ed through the bores 29 in the walls 28 of the locking means 25. The rear movement-limiting surface 26 of the locking means 25, and the shaft 34 form a clamp lock for the stop means 23, and therewith ~2~
the belt 13. By reversing the motox 16, the belt 13 is unwound from the drum 18, therewith returning the guide arm to a substantially vertical position When the compartment is filled with wood, the shaft 34 is activated and relcases the free end of the belt 13 from the locking means 25. The belt 13 is then again taken-up on the drum 18, whereafter the said end of the belt is again brought into contact with the locking means 25, in the aforedescribed manner.
It has been found an advantage -to make the free end portion of the belt 13 more rigid than the remainder of the belt.
In accordance with a preferred embodiment, this free end portion of the belt can be given double-belt thickness, for example by folding the belt back onto itself, and the stop means, which have a length equal to that of the width of the belt, can be anchored between two such portions of the belt sewn together. Because of its stiffer construction, the free end of the belt will strive to take a horizontal position as the guide arm moves upwardly, facilitating abutment of said belt end against the rear abutment surface 26 of the locking means 25.
As will be understood, the free end of the belt can also be stiffened by fixing simple, flexible metal elements thereto, such as springs.
It would seem essential, however, that the outmost end of the guide arm l9 at the moment of engagement with the upper restricting surface 27 of the locking means 25 is located as close to the periphery of the bore 29 as possible, i.e. in each case so that the shaft 34 can be freely guided into the bores 29, and that the freely hanying belt end is of sufficient length.
The horizontal locking shaft 34 is advantageous from the aspect of safety, because the forces acting vertically when the belt 13 is loaded are taken-up by the loc]cing means 25~ By providing the upper abutment surface 27 of the locking means 25 with sensing means r it is possible to automate forward movement oE the locklng shaft 34.
\
,~
.~
Claims (8)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A wood sorting apparatus of the kind comprising a plurality of compartments arranged to receive wood from a conveyor located above said compartments, each of said compartments being provided with an openable receiving or bottom part comprising at least two flexible members, and each of said members being arranged to co-act on one side of a compartment with a drum arranged to take-up and pay-out respective ones of said members, and each of said members being passed over a guide arm arranged on the same side as the drum, respective free ends of said members on the other side of said compartment being arranged to co-act with a locking means, and the drum being arranged to co-act with the guide arm in a manner such that, at the end phase of a member take-up operation, said guide arm is caused to swing upwardly in a direction towards the locking means arranged on the opposite side of said compartment, for releasable co-action of said locking means with the free end of respective members, characterized in that a) the free end of respective members in the working phase when said guide arm moves upwardly, has a length such that it hangs freely outside the free end of respective guide arms, and in that the free end of the members exhibit at least two mutually spaced stop means; b) that the guide arm is arranged in an optimally substantially horizontal position, to abut said free end within a space defined by the locking means, said space being arranged to accommodate at least the outermost stop means and exhibits means which form a clamp lock for the free end of said member in a wood-receiving position.
2. An apparatus according to claim 1, characterized in that the locking means includes an opening which faces the drum, and an upper surface arranged to form an abutment for the guide arm, a lock formed between two surfaces for the free end of said member, of which surfaces one is movable.
3. An apparatus according to claim 2, characterized in that the movable surface is a shaft arranged, upon contact of the guide arm with the surface, to be moved horizontally from a passive position to a position in which the end part of said member is locked.
4. An apparatus according to claim 3, characterized in that the shaft is displaceably mounted in the walls of the locking means.
5. An apparatus according to claim 3 or claim 4, characterized by sensing means arranged to activate movement of the shaft to said locking position, either directly or indirectly, upon contact of the guide arm with the surface.
6. An apparatus according to claim 1, characterized in that the member has the same degree of flexibility throughout.
7. An apparatus according to claim 1, characterized in that the flexible member comprises in a known manner a flexible belt of desired width, the end portion of which has at least double belt thickness, and in that stop means are arranged between the thicknesses of said belt.
8. An apparatus according to claim 1, characterized in that the free end portion of a flexible member is stiffened by means of one or more flexible elements made of a suitable material, for example metal.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE8200808 | 1982-02-11 | ||
| SE8200808A SE430129B (en) | 1982-02-11 | 1982-02-11 | LUMBER SORTING DEVICE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1216545A true CA1216545A (en) | 1987-01-13 |
Family
ID=20345977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000419190A Expired CA1216545A (en) | 1982-02-11 | 1983-01-10 | Wood sorting apparatus |
Country Status (6)
| Country | Link |
|---|---|
| AT (1) | AT382799B (en) |
| CA (1) | CA1216545A (en) |
| DE (1) | DE3304812A1 (en) |
| FI (1) | FI72441C (en) |
| FR (1) | FR2521038B1 (en) |
| SE (1) | SE430129B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4742918A (en) * | 1986-09-29 | 1988-05-10 | U.S. Natural Resources, Inc. | Apparatus for compiling sorted lumber |
| US4742920A (en) * | 1986-09-29 | 1988-05-10 | U.S. Natural Resources, Inc. | Lumber sorting apparatus |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3604563A (en) * | 1970-01-28 | 1971-09-14 | Moore Dry Kiln Co | Lumber sorter |
| SE347720B (en) * | 1970-08-06 | 1972-08-14 | Bolinder Munktell | |
| SE405815B (en) * | 1977-03-18 | 1979-01-08 | Unghanse Carl | PRE-SORTING DEVICE |
| US4104156A (en) * | 1977-06-13 | 1978-08-01 | Fletcher John K | Detachable sling letdown apparatus for lumber sorter |
| US4205751A (en) * | 1978-06-07 | 1980-06-03 | Alpo Rysti | Method and apparatus for sorting timber |
-
1982
- 1982-02-11 SE SE8200808A patent/SE430129B/en not_active IP Right Cessation
- 1982-12-17 FI FI824351A patent/FI72441C/en not_active IP Right Cessation
-
1983
- 1983-01-03 FR FR8300010A patent/FR2521038B1/en not_active Expired
- 1983-01-10 CA CA000419190A patent/CA1216545A/en not_active Expired
- 1983-01-11 AT AT0007583A patent/AT382799B/en not_active IP Right Cessation
- 1983-02-11 DE DE19833304812 patent/DE3304812A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| DE3304812A1 (en) | 1983-10-06 |
| FI824351L (en) | 1983-08-12 |
| FI72441C (en) | 1987-06-08 |
| FI72441B (en) | 1987-02-27 |
| FR2521038B1 (en) | 1986-10-17 |
| ATA7583A (en) | 1986-09-15 |
| FI824351A0 (en) | 1982-12-17 |
| SE8200808L (en) | 1983-08-12 |
| AT382799B (en) | 1987-04-10 |
| SE430129B (en) | 1983-10-24 |
| FR2521038A1 (en) | 1983-08-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |