CA2347502C - Running roller for the traveling-gear mechanism of the transporting means of a cableway system - Google Patents
Running roller for the traveling-gear mechanism of the transporting means of a cableway system Download PDFInfo
- Publication number
- CA2347502C CA2347502C CA002347502A CA2347502A CA2347502C CA 2347502 C CA2347502 C CA 2347502C CA 002347502 A CA002347502 A CA 002347502A CA 2347502 A CA2347502 A CA 2347502A CA 2347502 C CA2347502 C CA 2347502C
- Authority
- CA
- Canada
- Prior art keywords
- roller
- running
- ring
- projections
- roller body
- 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 - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
- B61B12/00—Component parts, details or accessories not provided for in groups B61B7/00 - B61B11/00
- B61B12/02—Suspension of the load; Guiding means, e.g. wheels; Attaching traction cables
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Rollers For Roller Conveyors For Transfer (AREA)
- Electric Cable Installation (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Forwarding And Storing Of Filamentary Material (AREA)
- Pulleys (AREA)
- Seats For Vehicles (AREA)
- Transmission Devices (AREA)
- Chain Conveyers (AREA)
- Guides For Winding Or Rewinding, Or Guides For Filamentary Materials (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Abstract
Running roller (5) for the traveling-gear mechanism of the transporting means of a cableway system, having a pulley-like roller body (51). The roller body (51) here is produced from a metal, in particular from steel, in a manner known per se, and provided along the circumference of the roller body (51) is a running surface (61) which encloses the roller body and is produced from a plastic material (figure 3).
Description
Running roller for the traveling-gear mechanism of the transporting means of a cableway system The present invention relates to a running roller for the traveling-gear mechanism of the transporting means of a cableway system, having a pulley-like roller body.
It is known in the case of cableway systems for the transporting means to be designed, on the one hand, with clamps, by means of which they can be clamped onto the haulage cable, and, on the other hand, with traveling-gear mechanisms, by means of which they can be moved along guide rails in the stations once the clamps have been opened. In the case of these known cableway systems, the haulage cable is kept circulating at a speed of approximately 8 m/sec. In the stations, the transporting means are uncoupled from the haulage cable and moved through the station region along guide rails at such a speed that passengers can leave and/or board them.
It is known here for the running rollers to be produced from a metallic material. Such known running rollers, however, are disadvantageous because their movement along the guide rails, which are likewise produced from metal, causes very pronounced noise development. In order to keep the running noise to the lowest possible level, it is also known to produce the rollers of the running-gear mechanism from a plastic material.
However, such running rollers have the disadvantage that they are at considerably greater risk of rupturing than is the case for running rollers produced from metal. If a running roller ruptures, this can cause serious disruption to operation. In particular, in the region where the transporting means is coupled to the haulage cable, there is the risk of the haulage cable not being gripped by the clamps, as a result of which the transporting means may crash downward as it leaves the station. In order to eliminate this risk, it is known to provide additional guide rails, which are intended to ensure that the haulage cable is gripped by the clamps even if a running roller ruptures. These additional guide rails, however, do not meet the current requirements because they result in a further high level of design-related outlay and also because they do not ensure proper functioning of the clamps.
The object of the present invention is thus to provide a running roller by means of which the disadvantages of the known running rollers are avoided. This is achieved according to the invention in that the roller body is produced from a metal, in particular from steel, in a manner known per se, and in that provided along the circumference of the roller body is a running surface which encloses the roller body and is produced from a plastic material.
Since the roller body is produced from a metal, the risk of the running roller rupturing is reduced to a permissable extent. Since, in addition, the roller body is provided with a running surface produced from plastic material, the running noise of the running roller is reduced to the sought-after extent. Since, in addition, it is only the running surface which is produced from a plastic material, the roller body, which is produced from metal, assumes the function of the running roller in the case of the running surface rupturing, this achieving the emergency running properties which are necessary during the coupling operation of the clamps. Such a running roller thus completely avoids the disadvantages of the known prior art.
It is known in the case of cableway systems for the transporting means to be designed, on the one hand, with clamps, by means of which they can be clamped onto the haulage cable, and, on the other hand, with traveling-gear mechanisms, by means of which they can be moved along guide rails in the stations once the clamps have been opened. In the case of these known cableway systems, the haulage cable is kept circulating at a speed of approximately 8 m/sec. In the stations, the transporting means are uncoupled from the haulage cable and moved through the station region along guide rails at such a speed that passengers can leave and/or board them.
It is known here for the running rollers to be produced from a metallic material. Such known running rollers, however, are disadvantageous because their movement along the guide rails, which are likewise produced from metal, causes very pronounced noise development. In order to keep the running noise to the lowest possible level, it is also known to produce the rollers of the running-gear mechanism from a plastic material.
However, such running rollers have the disadvantage that they are at considerably greater risk of rupturing than is the case for running rollers produced from metal. If a running roller ruptures, this can cause serious disruption to operation. In particular, in the region where the transporting means is coupled to the haulage cable, there is the risk of the haulage cable not being gripped by the clamps, as a result of which the transporting means may crash downward as it leaves the station. In order to eliminate this risk, it is known to provide additional guide rails, which are intended to ensure that the haulage cable is gripped by the clamps even if a running roller ruptures. These additional guide rails, however, do not meet the current requirements because they result in a further high level of design-related outlay and also because they do not ensure proper functioning of the clamps.
The object of the present invention is thus to provide a running roller by means of which the disadvantages of the known running rollers are avoided. This is achieved according to the invention in that the roller body is produced from a metal, in particular from steel, in a manner known per se, and in that provided along the circumference of the roller body is a running surface which encloses the roller body and is produced from a plastic material.
Since the roller body is produced from a metal, the risk of the running roller rupturing is reduced to a permissable extent. Since, in addition, the roller body is provided with a running surface produced from plastic material, the running noise of the running roller is reduced to the sought-after extent. Since, in addition, it is only the running surface which is produced from a plastic material, the roller body, which is produced from metal, assumes the function of the running roller in the case of the running surface rupturing, this achieving the emergency running properties which are necessary during the coupling operation of the clamps. Such a running roller thus completely avoids the disadvantages of the known prior art.
The roller body is preferably designed, on its outer circumference, with at least one annular protrusion of which the external diameter is at least 80%, in particular 90% to 95%, of the external diameter of the running roller, and, in addition, the outer side surfaces of the at least one ring-like protrusion are spaced apart from one another by a distance which is at least 65%, in particular 75%, of the distance between the lateral guide surfaces of the running roller. This design thus achieves optimized emergency running properties since, as a result, the clamps are guided in relation to the haulage cable, both as far as their vertical position and as far as their lateral position are concerned, such that a proper coupling operation is ensured.
The roller body is preferably also designed, along the circumference, with through-passages, in particular with bores, which have the plastic material which forms the running surface passing through them. This achieves optimum fastening of the running surfaces, which are produced from a plastic material, on the metallic roller body. According to a preferred embodiment, the roller body, in the region of its hub, extends over the entire thickness of the running roller, whereas, radially outside its hub, it is of a thickness of approximately 70% of the thickness of the running roller.
It is critical for the functioning of the emergency running properties of the roller body that the latter largely corresponds to the running roller both in diameter and in width, in order thus to ensure the necessary vertical position and lateral position of the clamp for the coupling operation.
This requirement can be met in that the roller.body is designed with a single ring-like protrusion of which the external diameter is approximately 90% of the external diameter of the running roller and of which the width is approximately 85% of the distance between the lateral guide surfaces of the running roller.
Alternatively, it is possible for the roller body to be designed, on its circumference, with two ring-like protrusions of which the external diameter is approximately 90% of the external diameter of the running roller, and of which the outer wall surfaces are spaced apart from one another by a distance of approximately 85% of the distance between the lateral guide surfaces of the running roller.
In addition, the roller body may be designed with a cross-sectionally approximately T-shaped protrusion, the crossbar thereof being located in the region of the outer circumference. It is also possible for the roller body to be designed with a protrusion which runs in wave form over the circumference of the running roller.
The subject matter of the invention is explained in more detail hereinbelow with reference to exemplary embodiments illustrated in the drawing, in which:
Figure 1 shows a cableway cabin with a running-gear mechanism, a clamping means and a suspension bar, as seen in the direction of the haulage cable;
Figure 2 shows the running-gear mechanism and the clamping arrangement on a larger scale than figure 1, Figure 3 shows, in axial section, a running roller mounted on the running-gear mechanism, Figures 4 and 4a show the running roller according to figure 3 in axial section and in a section along line A-A from figure 4, and Figures 5, 5a, 6, 6a, 7, 7a and 7b show further embodiments of the running roller according to the invention, respectively in axial section and in a section along lines B-B, C-C and D-D
from figures 5, 6 and 7 and in plan view.
Figure 1 illustrates a cableway cabin 1 which can be coupled to a haulage cable by means of a suspension bar 2. Located at the top end of the suspension bar 2 is a clamping means 3 and a running-gear mechanism 4 with at least two running rollers.
Figure 2 illustrates, on an enlarged scale, the suspension bar 2, the clamping means 3, the running-gear mechanism 4 with running rollers 5, a conveying rail 11, the haulage cable 12 and a friction surface 13, on which the conveying rollers act in the stations.
Since the designs here are known from the prior art, they will not be explained in any more detail.
As can be seen from figure 3, the running-gear mechanism 4 is designed with at least two bearing bolts 41, on which a running roller 5 is mounted by means of a ball bearing 42. In order to fasten the ball bearing 42, the end surface of the bearing bolt 41 is designed as a securing cover 43 by means of which a securing ring 44 is retained, said securing ring engaging axially over the ball bearing 42, as a result of which the latter is secured axially in position. The guide rail 11, in which the running rollers 5 are guided, is also illustrated.
As is explained in detail hereinbelow, the running rollers 5 comprise a roller body 51, which is produced from a metal, in particular from steel, and a running ring 61, which is produced from a plastic material, in particular from polyamide.
The running ring 61 ensures the sought-after guidance of the running rollers 5 in the guide rail 11 with a low level of noise.
The top part of the drawing illustrates a complete running roller 5, which is designed with the running ring 61 on its outer circumference. In contrast, the bottom part of the drawing illustrates the running roller 5 in the case of which the running ring 61 has been broken away. In this case, it is necessary for the running roller 5 to ensure such emergency running properties that, despite the damage, a proper coupling operation is ensured. This is achieved when the running roller 5, even when the running ring 61 has been broken away, assumes virtually the same vertical position and the same lateral position, in relation to the guide rail 11, as the undamaged running roller. This requirement is met by the particular design of the running roller 5, this design being explained with reference to a number of exemplary embodiments hereinbelow.
As is illustrated in figures 4 and 4a, according to a first embodiment, the roller body 51 is designed, on its outer circumference, with two spaced-apart ring-like protrusions 52 of which the diameter is approximately 90% of the diameter of the running roller 5 with the running ring 61 and in the case of which the distance between the outer side flanks is approximately 75% of the distance between the side flanks of the running roller 5 with running ring 61. This design:ensures that, even in the case of the running ring 6l rupturing, the running roller 5 performs virtually the same function as the undamaged running roller 5, and that emergency running properties are thus ensured. This applies, on the one hand, in respect of the outer circumference of the ring-like protrusions 52, by means of which the running roller 5 is guided in the virtually correct vertical position in the guide rail 11, and also in respect of the outer side flanks of the ring-like protrusion 52, by means of which the running roller is guided in the guide rail 11 in respect of its lateral position such that it also assumes virtually the correct lateral position.
In order to achieve an optimum connection between the running ring 61 and the roller body 51, the ring-like protrusions 52 are designed with a multiplicity of bores 53 which have the material of the running ring 52 passing through them.
As can also be seen, the roller body 51 is of the-width of the running roller 5 in the region of the hub and is designed to be somewhat narrower in the radially outer region, the roller body merging, in the direction away from there, into the ring-like protrusions 52.
Figures 5 and 5a illustrate a variant of the running roller 5a in which the roller body 51a is designed with just one.ring-like protrusion 52a. In its bottom region, the roller body 51a is designed with a multiplicity of bores 53a which have the material of the running ring 61a passing through them.
However, these bores are not absolutely necessary.
Figures 6 and 6a illustrate a further embodiment of such a running roller 5b, in which the roller body 51b is designed with a cross-sectionally T-shaped ring-like protrusion 52b, the T-bar.being located at the radially outer end. In this case too, the necessary emergency running properties are -provided by the outer circumference of the T-bar and the lateral flanks thereof. The T-shaped protrusion 52b is enclosed by the running ring 61b. In addition, bores 53b which pass through the T-shaped protrusion 52b are provided in the bottom region of said running rollers 5b. However, they are not absolutely necessary, Figures 7 and 7a illustrate a further embodiment of such a running roller 5c. In this embodiment, the roller body 51c is designed with a protrusion 52c which runs in wave form over the circumference of the roller body 51c. This protrusion 52c is also enclosed by a running ring 61c.
In all the embodiments, the roller body itself, that is to say without the running ring, has an external diameter of at least 85% to 95%, preferably of 90%, of the external diameter of the running roller, and the distance between the outer side flanks of the at least one ring-like or wave-form protrusion is at least 65%, preferably 75%, of the distance between the side flanks of the running roller. This means that, even when the running ring has been broken away, the roller body achieves the necessary emergency running properties to the effect that, with the running rollers damaged, the roller body is guided in the guide rail in such a vertical position and in such a lateral position that a proper coupling operation with the supporting and haulage cable is ensured.
_g_
The roller body is preferably also designed, along the circumference, with through-passages, in particular with bores, which have the plastic material which forms the running surface passing through them. This achieves optimum fastening of the running surfaces, which are produced from a plastic material, on the metallic roller body. According to a preferred embodiment, the roller body, in the region of its hub, extends over the entire thickness of the running roller, whereas, radially outside its hub, it is of a thickness of approximately 70% of the thickness of the running roller.
It is critical for the functioning of the emergency running properties of the roller body that the latter largely corresponds to the running roller both in diameter and in width, in order thus to ensure the necessary vertical position and lateral position of the clamp for the coupling operation.
This requirement can be met in that the roller.body is designed with a single ring-like protrusion of which the external diameter is approximately 90% of the external diameter of the running roller and of which the width is approximately 85% of the distance between the lateral guide surfaces of the running roller.
Alternatively, it is possible for the roller body to be designed, on its circumference, with two ring-like protrusions of which the external diameter is approximately 90% of the external diameter of the running roller, and of which the outer wall surfaces are spaced apart from one another by a distance of approximately 85% of the distance between the lateral guide surfaces of the running roller.
In addition, the roller body may be designed with a cross-sectionally approximately T-shaped protrusion, the crossbar thereof being located in the region of the outer circumference. It is also possible for the roller body to be designed with a protrusion which runs in wave form over the circumference of the running roller.
The subject matter of the invention is explained in more detail hereinbelow with reference to exemplary embodiments illustrated in the drawing, in which:
Figure 1 shows a cableway cabin with a running-gear mechanism, a clamping means and a suspension bar, as seen in the direction of the haulage cable;
Figure 2 shows the running-gear mechanism and the clamping arrangement on a larger scale than figure 1, Figure 3 shows, in axial section, a running roller mounted on the running-gear mechanism, Figures 4 and 4a show the running roller according to figure 3 in axial section and in a section along line A-A from figure 4, and Figures 5, 5a, 6, 6a, 7, 7a and 7b show further embodiments of the running roller according to the invention, respectively in axial section and in a section along lines B-B, C-C and D-D
from figures 5, 6 and 7 and in plan view.
Figure 1 illustrates a cableway cabin 1 which can be coupled to a haulage cable by means of a suspension bar 2. Located at the top end of the suspension bar 2 is a clamping means 3 and a running-gear mechanism 4 with at least two running rollers.
Figure 2 illustrates, on an enlarged scale, the suspension bar 2, the clamping means 3, the running-gear mechanism 4 with running rollers 5, a conveying rail 11, the haulage cable 12 and a friction surface 13, on which the conveying rollers act in the stations.
Since the designs here are known from the prior art, they will not be explained in any more detail.
As can be seen from figure 3, the running-gear mechanism 4 is designed with at least two bearing bolts 41, on which a running roller 5 is mounted by means of a ball bearing 42. In order to fasten the ball bearing 42, the end surface of the bearing bolt 41 is designed as a securing cover 43 by means of which a securing ring 44 is retained, said securing ring engaging axially over the ball bearing 42, as a result of which the latter is secured axially in position. The guide rail 11, in which the running rollers 5 are guided, is also illustrated.
As is explained in detail hereinbelow, the running rollers 5 comprise a roller body 51, which is produced from a metal, in particular from steel, and a running ring 61, which is produced from a plastic material, in particular from polyamide.
The running ring 61 ensures the sought-after guidance of the running rollers 5 in the guide rail 11 with a low level of noise.
The top part of the drawing illustrates a complete running roller 5, which is designed with the running ring 61 on its outer circumference. In contrast, the bottom part of the drawing illustrates the running roller 5 in the case of which the running ring 61 has been broken away. In this case, it is necessary for the running roller 5 to ensure such emergency running properties that, despite the damage, a proper coupling operation is ensured. This is achieved when the running roller 5, even when the running ring 61 has been broken away, assumes virtually the same vertical position and the same lateral position, in relation to the guide rail 11, as the undamaged running roller. This requirement is met by the particular design of the running roller 5, this design being explained with reference to a number of exemplary embodiments hereinbelow.
As is illustrated in figures 4 and 4a, according to a first embodiment, the roller body 51 is designed, on its outer circumference, with two spaced-apart ring-like protrusions 52 of which the diameter is approximately 90% of the diameter of the running roller 5 with the running ring 61 and in the case of which the distance between the outer side flanks is approximately 75% of the distance between the side flanks of the running roller 5 with running ring 61. This design:ensures that, even in the case of the running ring 6l rupturing, the running roller 5 performs virtually the same function as the undamaged running roller 5, and that emergency running properties are thus ensured. This applies, on the one hand, in respect of the outer circumference of the ring-like protrusions 52, by means of which the running roller 5 is guided in the virtually correct vertical position in the guide rail 11, and also in respect of the outer side flanks of the ring-like protrusion 52, by means of which the running roller is guided in the guide rail 11 in respect of its lateral position such that it also assumes virtually the correct lateral position.
In order to achieve an optimum connection between the running ring 61 and the roller body 51, the ring-like protrusions 52 are designed with a multiplicity of bores 53 which have the material of the running ring 52 passing through them.
As can also be seen, the roller body 51 is of the-width of the running roller 5 in the region of the hub and is designed to be somewhat narrower in the radially outer region, the roller body merging, in the direction away from there, into the ring-like protrusions 52.
Figures 5 and 5a illustrate a variant of the running roller 5a in which the roller body 51a is designed with just one.ring-like protrusion 52a. In its bottom region, the roller body 51a is designed with a multiplicity of bores 53a which have the material of the running ring 61a passing through them.
However, these bores are not absolutely necessary.
Figures 6 and 6a illustrate a further embodiment of such a running roller 5b, in which the roller body 51b is designed with a cross-sectionally T-shaped ring-like protrusion 52b, the T-bar.being located at the radially outer end. In this case too, the necessary emergency running properties are -provided by the outer circumference of the T-bar and the lateral flanks thereof. The T-shaped protrusion 52b is enclosed by the running ring 61b. In addition, bores 53b which pass through the T-shaped protrusion 52b are provided in the bottom region of said running rollers 5b. However, they are not absolutely necessary, Figures 7 and 7a illustrate a further embodiment of such a running roller 5c. In this embodiment, the roller body 51c is designed with a protrusion 52c which runs in wave form over the circumference of the roller body 51c. This protrusion 52c is also enclosed by a running ring 61c.
In all the embodiments, the roller body itself, that is to say without the running ring, has an external diameter of at least 85% to 95%, preferably of 90%, of the external diameter of the running roller, and the distance between the outer side flanks of the at least one ring-like or wave-form protrusion is at least 65%, preferably 75%, of the distance between the side flanks of the running roller. This means that, even when the running ring has been broken away, the roller body achieves the necessary emergency running properties to the effect that, with the running rollers damaged, the roller body is guided in the guide rail in such a vertical position and in such a lateral position that a proper coupling operation with the supporting and haulage cable is ensured.
_g_
Claims (5)
1. A roller for the running gear of the movable operating unit of an aerial cableway installation, said roller having lateral guide faces and having a metal sheave-like roller body, which roller body is constructed around its circumference with a plastics material running surface surrounding it, wherein the roller body is provided at its circumference with two ring-like projections, said ring-like projections having outer side faces, and said ring-like projections being arranged at a distance from one another, and wherein the external diameter of the ring-like projections amounts to at least 80% of the external diameter of the roller, and wherein the outer side faces of the ring-like projections are spaced from one another by at least 65% of the distance between the lateral guide faces of the roller and which are provided, around the circumference of the roller, with openings through which the plastics material of the running surface passes, wherein, in the event of the running surface being broken away, the outer circumference and the outer side faces of the projections serve as an emergency running guide for the height and lateral position of the roller.
2. A roller according to claim 1 wherein the roller body is made of steel.
3. A roller according to claim 1 or 2 wherein the openings in the ring-like projections are drill holes.
4. A roller according to any one of claims 1 to 3, wherein the external diameter of the ring-like projections amounts to 90% to 95% of the external diameter of the roller.
5. A roller according to one of claims 1 to 4, wherein the outer side faces of the ring-like projections are spaced from one another by 75% of the lateral guide faces of the roller.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA1248/2000 | 2000-07-18 | ||
| AT0124800A AT409254B (en) | 2000-07-18 | 2000-07-18 | ROLLER ROLL FOR THE CHASSIS OF THE DRIVING EQUIPMENT OF A ROPEWAY SYSTEM |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2347502A1 CA2347502A1 (en) | 2002-01-18 |
| CA2347502C true CA2347502C (en) | 2006-05-09 |
Family
ID=3687808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002347502A Expired - Fee Related CA2347502C (en) | 2000-07-18 | 2001-05-14 | Running roller for the traveling-gear mechanism of the transporting means of a cableway system |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20020007757A1 (en) |
| EP (1) | EP1174324B1 (en) |
| JP (1) | JP2002054625A (en) |
| AT (2) | AT409254B (en) |
| CA (1) | CA2347502C (en) |
| DE (1) | DE50005523D1 (en) |
| ES (1) | ES2212981T3 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SI1640235T1 (en) * | 2004-09-23 | 2007-06-30 | Innova Patent Gmbh | Device for attaching a movable transport unit of a cableway installation to a suspension bar |
| AT512298B1 (en) * | 2012-02-06 | 2013-07-15 | Innova Patent Gmbh | ROLE, IN PARTICULAR ROLLER BZW. CARRIER FOR RAILWAY SYSTEMS |
| KR102203714B1 (en) | 2018-07-17 | 2021-01-18 | 한국철도기술연구원 | Insert type intergrated roller for enhancing strength in injection molding process |
| EA039257B1 (en) * | 2019-12-12 | 2021-12-23 | Анатолий Эдуардович Юницкий | Yunitsky transport system |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1592043A (en) * | 1925-12-01 | 1926-07-13 | Faultless Caster Co | Coated-core caster and truck wheel |
| AT220667B (en) * | 1960-11-12 | 1962-04-10 | Walter Oxe | Insert ring and screwable feeding segment made of elastic material for rope pulleys and sheaves that work with wire ropes |
| CH557761A (en) * | 1972-11-10 | 1975-01-15 | Dufour Eric | BANDAGE DE ROUE. |
| CA959742A (en) * | 1972-11-29 | 1974-12-24 | Maurice Lacerte | Solid tire wheel |
| US4095846A (en) * | 1976-08-26 | 1978-06-20 | Agins David B | Wheel with molded tire for carts |
| US4067083A (en) * | 1976-11-12 | 1978-01-10 | Shepherd Products U.S. Inc. | Composite caster |
| US5026106A (en) * | 1988-11-30 | 1991-06-25 | Paul Biermann | Tram car wheel |
| DE4117885A1 (en) * | 1991-05-31 | 1992-12-03 | Magnet Bahn Gmbh | Wheel for magnetically-levitated vehicle - has conductive wires extending between running surface of tyre and metal wheel hub |
-
2000
- 2000-07-18 AT AT0124800A patent/AT409254B/en not_active IP Right Cessation
- 2000-11-30 AT AT00890358T patent/ATE260793T1/en active
- 2000-11-30 DE DE50005523T patent/DE50005523D1/en not_active Expired - Fee Related
- 2000-11-30 ES ES00890358T patent/ES2212981T3/en not_active Expired - Lifetime
- 2000-11-30 EP EP00890358A patent/EP1174324B1/en not_active Expired - Lifetime
-
2001
- 2001-04-26 US US09/843,514 patent/US20020007757A1/en not_active Abandoned
- 2001-05-14 CA CA002347502A patent/CA2347502C/en not_active Expired - Fee Related
- 2001-05-16 JP JP2001146573A patent/JP2002054625A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002054625A (en) | 2002-02-20 |
| EP1174324B1 (en) | 2004-03-03 |
| ATA12482000A (en) | 2001-11-15 |
| ATE260793T1 (en) | 2004-03-15 |
| US20020007757A1 (en) | 2002-01-24 |
| DE50005523D1 (en) | 2004-04-08 |
| CA2347502A1 (en) | 2002-01-18 |
| AT409254B (en) | 2002-07-25 |
| ES2212981T3 (en) | 2004-08-16 |
| EP1174324A3 (en) | 2002-10-16 |
| EP1174324A2 (en) | 2002-01-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |