US4289077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railway center bearing wear liner
Assignee: Dayco Products LLC
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Filing: 1979-05-24
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Granted: 1981-09-15
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Expires: 1999-05-24
Abstract
Abstract A cup-shaped wear resistant liner for a center plate structure of a railway vehicle is provided wherein such liner is defined by a planar disc-like bottom portion adjoined by a peripheral flange portion extending from the periphery of the bottom portion with each of the portions being made primarily of a polymeric material wherein one of the portions has a particular wear characteristic and the other of the portions has a wear characteristic that is different from the wear characteristic of the one portion.
Inventors
- 👤 Donald L. Kleykamp
- 👤 Homer N. Holden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:05
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/28; B; B61; B61F; B61F5/00; B61F5/02; B61F5/16; F16C17/00; F16C17/04; F16C17/08; F16C33/20; F16C2326/00; F16C2326/10
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
101 words
In a cup-shaped wear resistant liner for a center plate structure of a railway vehicle defined by a planar disc-like bottom portion adjoined by a tubular peripheral flange portion extending upwardly from the periphery of said bottom portion, each of said portions being made primarily of polymeric material, the improvement wherein one of said portions being made of a material having a particular wear characteristic and the other of said portions being made of a material having a wear characteristic that is different from the wear characteristic of said one portion, said portions being fixed together to define a unitary structure.
Claim 2
Dependent Claim
101 words
In a cup-shaped wear resistant liner for a center plate structure of a railway vehicle defined by a planar disc-like bottom portion adjoined by a tubular peripheral flange portion extending upwardly from the periphery of said bottom portion, each of said portions being made primarily of polymeric material, the improvement wherein one of said portions being made of a material having a particular wear characteristic and the other of said portions being made of a material having a wear characteristic that is different from the wear characteristic of said one portion, said portions being fixed together to define a unitary structure.
Claim 3
Dependent Claim
21 words
A liner as set forth in claim 1 in which said one portion is an ultra high molecular weight polymeric material.
Claim 4
Dependent Claim
19 words
A liner as set forth in claim 2 in which said ultra high molecular weight polymeric material is polyethylene.
Claim 5
Dependent Claim
15 words
A liner as set forth in claim 2 in which said other portion is nylon.
Claim 6
Dependent Claim
17 words
A liner as set forth in claim 4 in which said one portion is said bottom portion.
Claim 7
Dependent Claim
42 words
A liner as set forth in claim 1 in which at least one of said portions has reinforcing means embedded in the polymeric material thereof and said polymeric material serves as a matrix for and substantially completely surrounds the associated reinforcing means.
Claim 8
Dependent Claim
17 words
A liner as set forth in claim 6 in which said reinforcing means comprises a metal structure.
Claim 9
Dependent Claim
18 words
A liner as set forth in claim 6 in which said reinforcing means comprises an expanded metal structure.
Claim 10
Dependent Claim
37 words
A liner as set forth in claim 1 in which each of said portions has reinforcing means embedded in the polymeric material thereof which serves as a matrix for and substantially completely surrounds the associated reinforcing means.
Claim 11
Dependent Claim
46 words
A liner as set forth in claim 1 in which said tubular peripheral flange portion is of L-shaped cross-sectional configuration and comprises a right circular cylindrical part disposed perpendicular to said bottom portion and a transition part interconnecting said right circular cylinderical part and bottom portion.
References Cited (Backward Citations)
US2258640A
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US2514034A
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US3218989A
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US3944298A
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US4075951A
Cited
US4188888A
Cited
US4239007A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-09-14 | 1985-03-16 | 1985-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-14 | 1989-03-16 | 1989-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-14 | 1993-03-16 | 1993-09-15 | $7700.00 | Window Closed / Lapsed |