US4712488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastomeric member having flexible woven material bonded thereto in a railway truck primary suspension system
Assignee: Bombardier Corp
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Filing: 1986-10-24
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Granted: 1987-12-15
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Expires: 2006-10-24
Abstract
Abstract In a railway truck, a primary suspension system comprising a pair of elastomeric half-ring members having high wear flexible woven material bonded thereto and on opposite sides thereof; the woven material having high flexibility and wear resistance perpendicular to the plane of the material and rigid within the plane of the material.
Inventors
- 👤 James M. Herring, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:52
CPC Classifications
B; B61; B61F; B61F5/00; B61F5/26; B61F5/30; B61F5/305
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
In a railway truck including a side frame with a clamp to receive a journal bearing assembly for an axle, a primary suspension system disposed between said journal bearing assembly and said side frame and clamp comprising: (a) a pair of elastomeric half-ring members disposed between said journal box assembly and said side frame and clamp; (b) the opposite surfaces of each of said elastomeric members including high wear flexible woven material bonded thereto; (c) each of said elastomeric half-ring members including lip portions extending outwardly to receive portions of said side frame and said clamp therebetween with said lip portions including woven material bonded thereto; (d) said elastomeric members further including voids therein: (e) said woven material preventing bulging in the areas of said voids of the elastomeric material when subjected to heavy car loads, and (f) said elastomeric members conforming to irregular surfaces in said journal box assembly said side frame and said clamp.
Claim 2
Dependent Claim
156 words
In a railway truck including a side frame with a clamp to receive a journal bearing assembly for an axle, a primary suspension system disposed between said journal bearing assembly and said side frame and clamp comprising: (a) a pair of elastomeric half-ring members disposed between said journal box assembly and said side frame and clamp; (b) the opposite surfaces of each of said elastomeric members including high wear flexible woven material bonded thereto; (c) each of said elastomeric half-ring members including lip portions extending outwardly to receive portions of said side frame and said clamp therebetween with said lip portions including woven material bonded thereto; (d) said elastomeric members further including voids therein: (e) said woven material preventing bulging in the areas of said voids of the elastomeric material when subjected to heavy car loads, and (f) said elastomeric members conforming to irregular surfaces in said journal box assembly said side frame and said clamp.
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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) | 1990-12-14 | 1991-06-15 | 1991-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-14 | 1995-06-15 | 1995-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-14 | 1999-06-15 | 1999-12-15 | $7700.00 | Window Closed / Lapsed |