Patent US3712427A successfully refreshed from Google Patents.
US3712427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Graphite and/or carbon disk with removable wear faces
Assignee: Goodyear Tire and Rubber Co
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Filing: 1970-11-05
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Granted: 1973-01-23
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Expires: 1990-11-05
Abstract
Abstract The invention comprises a brake disk assembly in the form of a carbon or graphite disk which is provided on both sides with thin wear plates of carbon or graphite material. The plates are either in segmented or full circle form and are secured to the core by rivets and bushings which also secure the keyway drives of the disks.
Inventors
- 👤 A Cook
- 👤 J Dernovshek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:28
CPC Classifications
F; F16; F16D; F16D69/00; F16D65/00; F16D65/02; F16D65/12; F16D65/125; F16D65/126; F16D55/00; F16D2055/0075; F16D2055/0095; F16D65/121
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
51 words
The brake disk assembly according to claim 1 wherein plates are secured to both sides of the core and each thin plate is in the form of an annular ring of the same configuration as the annular core, and each thin plate is of substantially the same material as the core.
Claim 2
Dependent Claim
53 words
The brake disk assembly according to claim 1 wherein plates are secured to both sides of the core and the thin plates are in the form of segments of an annular ring, the thin plates on each side of the core forming an annular ring of the same configuration as the annular core.
Claim 3
Dependent Claim
19 words
The brake disk assembly according to claim 1 wherein each thin plate is from 0.075 to 0.250 inches thick.
Claim 4
Dependent Claim
45 words
A brake disk assembly according to claim 1 where the core has the properties of being resistant to oxidation and having great structural strength, and the thin plate of friction material has the properties of being an excellent heat sink and having good frictional characteristics.
Claim 5
Dependent Claim
41 words
A brake disc according to claim 1 where the core is segmented and the thin plate of friction material is segmented, and the means to mechanically secure the thin plate to the core maintain the segments in an annular disc configuration.
Claim 6
Dependent Claim
27 words
A brake disk according to claim 1 where the core plate is at least one and 1/2 times the thickness of the thin plate of friction material.
Claim 7
Dependent Claim
37 words
The brake disk according to claim 1 wherein each keyway drive has a pair of side Portions extending along opposite sides of the brake disk adjacent 1 circumference thereof, the rivets extending through the non-rubbed side portions.
Claim 8
Dependent Claim
22 words
The brake disk according to claim 1 wherein bushings extend through the thin plates and the annular core to receive the rivets.
References Cited (Backward Citations)
US2542545A
Cited
FR1140969A
Cited
US3237731A
Cited
US3530960A
Cited
US3478850A
Cited
US3552533A
Cited
US3548979A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |