Patent US3915520A successfully refreshed from Google Patents.
US3915520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastomeric railway car side bearing
Assignee: Evans Products Co
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Filing: 1974-05-14
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Granted: 1975-10-28
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Expires: 1994-05-14
Abstract
Abstract A conversion unit is provided for converting the cage of a roller side bearing to a constant contact resilient side bearing. The unit comprises a plurality of elastomeric pads bounded by and interleaved by metal plates, with a contoured elastomeric surface on the bottom boundary plate for engagement with the concave upper surface of the roller seat, and a cap casting carried by the upper boundary plate and having depending flanges at its ends extending into the end portions of the roller cage.
Inventors
- 👤 Robert L Hassenauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:34
CPC Classifications
F; F16; F16F; F16F1/00; F16F1/36; F16F1/40; F16F1/403; B; B61; B61F; B61F5/00; B61F5/02; B61F5/14
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
146 words
A resilient railway side bearing device for insertion into an upwardly open structure having spaced side walls and a bottom wall formed with an upwardly open shallow recess in its top surface, comprising elastomeric pad means, horizontal bottom and top plates bonded to the bottom and top surfaces of said pad means, said plates and said pad means being generally rectangular in plan, said plates being slightly narrower than the inside spacing of the side walls, said pad means being narrower and shorter than said plates and having their sides slightly concave in plan whereby to avoid contact between said pad means and the side walls, and means for preventing shifting of said bottom plate longitudinally of the structure comprising an elastomeric pad bonded to the bottom surface of said bottom plate and adapted to extend into and conform to the surface contour of the recess.
Claim 2
Dependent Claim
146 words
A resilient railway side bearing device for insertion into an upwardly open structure having spaced side walls and a bottom wall formed with an upwardly open shallow recess in its top surface, comprising elastomeric pad means, horizontal bottom and top plates bonded to the bottom and top surfaces of said pad means, said plates and said pad means being generally rectangular in plan, said plates being slightly narrower than the inside spacing of the side walls, said pad means being narrower and shorter than said plates and having their sides slightly concave in plan whereby to avoid contact between said pad means and the side walls, and means for preventing shifting of said bottom plate longitudinally of the structure comprising an elastomeric pad bonded to the bottom surface of said bottom plate and adapted to extend into and conform to the surface contour of the recess.
Claim 3
Dependent Claim
31 words
A resilient railway side bearing device according to claim 1, including a metal cap carried on said top plate, and means holding said cap against horizontal movement on said top plate.
Claim 4
Dependent Claim
55 words
A resilient railway side bearing device according to claim 2 wherein said cap is detachably mounted on said top plate, said holding means comprising a pair of spaced upstanding pin-like elements on said top plate, said metal cap being apertured to receive said pin-like elements when said metal cap is seated on said top plate.
Claim 5
Dependent Claim
46 words
A resilient railway side bearing device according to claim 2, wherein the upwardly open structure has transverse wall portions at each end, and said cap means is formed with depending flanges receivable in the spaces between the ends of said plates and the transverse wall portions.
Claim 6
Dependent Claim
25 words
A resilient railway side bearing device according to claim 4 wherein the sides of said cap overlie the side walls of the upwardly open structure.
Claim 7
Dependent Claim
31 words
A resilient railway side bearing device according to claim 1 wherein said pad means comprises a plurality of flat elastomeric pads and metal plates interleaved between and bonded to adjacent pads.
Claim 8
Dependent Claim
142 words
A resilient railway side bearing device for insertion into an upwardly open structure having spaced side walls and a bottom wall formed with an upwardly open shallow recess in its top surface, comprising elastomeric pad means, horizontal bottom and top plates bonded to the bottom and top surfaces of said pad means, said plates and said pad means being generally rectangular in plan, said plates being slightly narrower than the inside spacing of the side walls, said pad means being narrower and shorter than said plates and having their sides slightly concave in plan whereby to avoid contact between said pad means and the side walls, and means for preventing shifting of said bottom plate longitudinally of the structure comprising an elastomeric pad bonded to the bottom surface of said bottom plate and adapted to be wholly received in the shallow recess.
Claim 9
Dependent Claim
142 words
A resilient railway side bearing device for insertion into an upwardly open structure having spaced side walls and a bottom wall formed with an upwardly open shallow recess in its top surface, comprising elastomeric pad means, horizontal bottom and top plates bonded to the bottom and top surfaces of said pad means, said plates and said pad means being generally rectangular in plan, said plates being slightly narrower than the inside spacing of the side walls, said pad means being narrower and shorter than said plates and having their sides slightly concave in plan whereby to avoid contact between said pad means and the side walls, and means for preventing shifting of said bottom plate longitudinally of the structure comprising an elastomeric pad bonded to the bottom surface of said bottom plate and adapted to be wholly received in the shallow recess.
Claim 10
Dependent Claim
84 words
A resilient railway side bearing device for insertion into an upwardly open structure having a bottom wall, spaced side walls, and a shallow recess in the bottom wall top surface, comprising elastomeric pad means, horizontal bottom and top plates bonded to the bottom and top surfaces of said pad means, said plates and said pad means being generally rectangular in plan, and an elastomeric pad bonded to the bottom surface of said bottom plate and shaped tO be wholly received in the shallow recess.
Claim 11
Dependent Claim
84 words
A resilient railway side bearing device for insertion into an upwardly open structure having a bottom wall, spaced side walls, and a shallow recess in the bottom wall top surface, comprising elastomeric pad means, horizontal bottom and top plates bonded to the bottom and top surfaces of said pad means, said plates and said pad means being generally rectangular in plan, and an elastomeric pad bonded to the bottom surface of said bottom plate and shaped tO be wholly received in the shallow recess.
Claim 12
Dependent Claim
46 words
A resilient railway side bearing device according to claim 8 wherein said recess is of arcuate shape curved about an axis transverse of said upwardly open structure, and said elastomeric pad on the bottom of said bottom plate is of generally similar contour with said recess.
Claim 13
Dependent Claim
57 words
A resilient railway side bearing device according to claim 9 for insertion into upwardly open structure formed with a pair of said arcuate recesses in longitudinal adjacent relation with each other in its bottom wall, wherein there are a pair of correspondingly related elastomeric pads of generally similar contour with the recesses bonded to said bottom plate.
Claim 14
Dependent Claim
89 words
A resilient railway side bearing device for insertion into an upwardly open structure having a bottom wall, spaced side walls, and a shallow recess in the bottom wall top surface, comprising elastomeric pad means, horizontal bottom and top plates bonded to the bottom and top surfaces of said pad means, said plates and said pad means being generally rectangular in plan, and an elastomeric pad bonded to the bottom surface of said bottom plate and adapted to extend into and conform to the surface contour of the shallow recess.
Claim 15
Dependent Claim
89 words
A resilient railway side bearing device for insertion into an upwardly open structure having a bottom wall, spaced side walls, and a shallow recess in the bottom wall top surface, comprising elastomeric pad means, horizontal bottom and top plates bonded to the bottom and top surfaces of said pad means, said plates and said pad means being generally rectangular in plan, and an elastomeric pad bonded to the bottom surface of said bottom plate and adapted to extend into and conform to the surface contour of the shallow recess.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |