US3724613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brake disc with beryllium core and carbon wear faces
Assignee: Goodyear Tire and Rubber Co
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Filing: 1970-10-16
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Granted: 1973-04-03
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Expires: 1990-10-16
Abstract
Abstract The rotating and stationary discs of a disc brake assembly are each formed of an annular beryllium core and annular carbon wear faces on the surfaces of the beryllium core. The wear faces are held to the core by rivets and bushings. The drive slots in the carbon wear faces are aligned with and match the drive slots of the beryllium core.
Inventors
- 👤 P Bermingham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:21
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/02; F16D65/12; F16D65/125; F16D65/126; F16D69/00; F16D69/02; F16D69/027
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
136 words
A brake disc for use in a brake unit comprising: an annular torque carrying core plate formed of beryllium an having drive means at uniformly spaced intervals on one circumference thereof; a carbon base torque carrying wear plate of the same configuration as the core plate on each side of the core plate; and rivet and bushing means received in apertures in each plate to mechanically secure the wear plates directly to the core plates as a unit so that work can be absorbed as friction between the wear plates and the core when the disc is in a braking action, and said rivets positioned so as to not interfere with the rubbed surface of the wear plates, and wherein said core plate is about the same thickness as the combined thickness of said wear plates.
Claim 2
Dependent Claim
116 words
A brake disc for use in a brake assembly having alternate statIonary and rotating discs carried between and axially movable between a backing plate and a pressure plate, comprising: an annular torque carrying core plate formed of beryllium and having drive notches at uniformly spaced intervals on one circumference thereof; annular torque carrying carbon base wear plates on either side of the core plate, the wear plates each having drive notches aligned with and of the same width as the drive notches of the core plate; and rivet and bushing means received in apertures in each plate to mechanically secure the wear plates directly to the core plate outside the rubbed surface of the wear plates.
Claim 3
Dependent Claim
16 words
The brake disc according to claim 3 wherein the core plate is of single piece construction.
Claim 4
Dependent Claim
18 words
The brake disc according to claim 3 wherein each of the wear plates is of single piece construction.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |