US3747712A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction disc for disc brake
Assignee: Bendix Corp
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Filing: 1971-09-20
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Granted: 1973-07-24
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Expires: 1991-09-20
Abstract
Abstract A friction disc such as a disc brake rotor having an annular core of material such as carbon or the like providing sliding frictional resistance and a heat sink for heat generated thereby. A retaining metal ring encircling the annular core is provided with circumferentially spaced-apart key slots adapted to engage drive keys suitably mounted to a wheel. A plurality of circumferentially spaced-apart radially extending openings in the retaining ring are adapted to receive associated drive pins or rods which extend therefrom through radially extending passages in the annular carbon core. Braking torque loads generated by the annular carbon core which bears against the drive pins are transmitted by the latter to the retaining ring which, in turn, bears against the drive keys.
Inventors
- 👤 G Stout
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:19
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/02; F16D65/12; F16D65/121; F16D55/00; F16D55/24; F16D55/26; F16D55/36; F16D55/40; F16D65/125; F16D65/126
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
160 words
A friction disc for a multiple disc brake for retarding rotation of a wheel member mounted on a fixed axle member, said friction disc comprising: an annular friction member defined by a plurality of arcuate segments arranged end to end formed of relatively brittle friction material characterized by strength weakest in tension and shear modes; a retaining ring concentric with said annular member and abutting one of the circumferential edges thereof; a plurality of circumferentially spaced-apart radially extending openings in said retaining ring; a plurality of circumferentially spaced-apart radially extending bores or openings in said annular member at least two bores being provided in each segment; a pin retained at one end by each of said plurlaity of openings and extending therefrom into an associated one of said bores; and key means operatively connecting said retain-ing ring to one of said wheel and axle members and permitting axial movement of said retaining ring relative to said wheel and axle members.
Claim 2
Dependent Claim
160 words
A friction disc for a multiple disc brake for retarding rotation of a wheel member mounted on a fixed axle member, said friction disc comprising: an annular friction member defined by a plurality of arcuate segments arranged end to end formed of relatively brittle friction material characterized by strength weakest in tension and shear modes; a retaining ring concentric with said annular member and abutting one of the circumferential edges thereof; a plurality of circumferentially spaced-apart radially extending openings in said retaining ring; a plurality of circumferentially spaced-apart radially extending bores or openings in said annular member at least two bores being provided in each segment; a pin retained at one end by each of said plurlaity of openings and extending therefrom into an associated one of said bores; and key means operatively connecting said retain-ing ring to one of said wheel and axle members and permitting axial movement of said retaining ring relative to said wheel and axle members.
Claim 3
Dependent Claim
23 words
A friction disc as claimed in claim 1 wherein: said pins are removably secured to said ring by fastening means extending transversely therethrough.
Claim 4
Dependent Claim
46 words
A friction disc as claimed in claim wherein: said retaining ring is engageable with the radially outward edge of said annular member; and said key means includes a plurality of circumferentially spaced-apart axially extending key members operatively connected to said wheel member and said retaining ring.
Claim 5
Dependent Claim
22 words
A friction disc as claimed in claim 1 wherein: said pins are slidably received by said bores with a non-interference fit therebetween.
Claim 6
Dependent Claim
29 words
A friction disc as claimed in Claim 1 wherein: said Key means includes circumferentially spaced-apart axially extending key members operatively connected to said retaining ring intermediate said openings therein.
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) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |