US4026393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brake disc for disc brakes on rail vehicles
Assignee: KNORR-BREMSE GmbH
•
Filing: 1976-03-10
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Granted: 1977-05-31
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Expires: 1996-03-10
Abstract
Abstract A brake disc for disc brakes on rail vehicles comprises an intermediate member connected to the inner peripheral surface of an annular element. The intermediate member is spaced radially from a hub and there are a pair of radially opposed annular grooves in the hub and intermediate member with blocks of resilient material in the opposed grooves. The blocks are pre-stressed and completely occupy the widths of the grooves. Heat inhibiting material is provided for inhibiting heat flow from the annular braking element to the resilient blocks.
Inventors
- 👤 Hans Gebhardt
- 👤 Franz Prahl
- 👤 Corneliu Mircea Popescu
- 👤 Mathias Schorwerth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:58
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/02; F16D65/12; F16D65/123; B; B61; B61H; B61H5/00; F16D65/0006; F16D2065/13; F16D2065/1304; F16D2065/1316; F16D2065/1328; F16D2065/134; F16D2065/1348; F16D2065/1356; F16D2065/136; F16D2065/1392; F16D2065/1396; F16D65/78; F16D2065/785; F16D65/128
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
119 words
A brake disc for disc brakes on rail vehicles comprising a hub, an annular braking element having an inner peripheral surface spaced radially from said hub, an intermediate member connected to the inner peripheral surface of said annular element, there being a pair of radially opposed annular grooves in said hub and intermediate member, a plurality of blocks of resilient material in said opposed grooves and uniformly distributed about the periphery thereof to interconnect resiliently said hub and intermediate member, said blocks being pre-stressed and fully occupying said grooves in their axial directions, and a layer of heat-inhibiting material in the annular groove of said intermediate member to inhibit heat flow from said annular element to said resilient blocks.
Claim 2
Dependent Claim
119 words
A brake disc for disc brakes on rail vehicles comprising a hub, an annular braking element having an inner peripheral surface spaced radially from said hub, an intermediate member connected to the inner peripheral surface of said annular element, there being a pair of radially opposed annular grooves in said hub and intermediate member, a plurality of blocks of resilient material in said opposed grooves and uniformly distributed about the periphery thereof to interconnect resiliently said hub and intermediate member, said blocks being pre-stressed and fully occupying said grooves in their axial directions, and a layer of heat-inhibiting material in the annular groove of said intermediate member to inhibit heat flow from said annular element to said resilient blocks.
Claim 3
Dependent Claim
19 words
A brake disc as claimed in claim 1 wherein each of said annular grooves has a rectangular cross section.
Claim 4
Dependent Claim
25 words
A brake disc as claimed in claim 1 wherein the surfaces of said blocks subject to radial forces are planar when said blocks are unstressed.
Claim 5
Dependent Claim
23 words
A brake disc as claimed in claim 1 wherein each of said blocks have the shape of a rectangular parallel piped when unstressed.
References Cited (Backward Citations)
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US1967322A
Cited
US2105188A
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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) | 1980-05-30 | 1980-11-29 | 1981-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-30 | 1984-11-29 | 1985-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-30 | 1988-11-29 | 1989-05-31 | $7700.00 | Window Closed / Lapsed |