Patent US3661235A successfully refreshed from Google Patents.
US3661235A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brake disc and hub combination
Assignee: Girling Ltd
•
Filing: 1970-03-17
•
Granted: 1972-05-09
•
Expires: 1990-03-17
Abstract
Abstract A brake disc for use in a disc brake and a method of manufacture thereof is characterized in that the bell and annulus are separately manufactured with complementary abutting datum surfaces and are engaged together by projections on one which mesh in slots to hold the two members together against relative axial and rotational movement. Preferably the projections engage the sides of the slots and not the roots so that there is some rotational preloading. The projections can be provided on a continuous or discontinuous skirt integral or welded to the bell and the slots are on a surface of the annulus opposite to the datum face thereof. The projections may be partially sheared from a continuous skirt.
Inventors
- 👤 Anthony William Harrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:06
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/02; F16D65/12; F16D65/128; F16D65/123; F16D2065/13; F16D2065/1304; F16D2065/1316; F16D2065/1328; F16D2065/134; F16D2065/1344; F16D2065/1356; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/49922
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
133 words
A brake disc for use in a disc brake comprising a bell and an annulus held together in a precise relationship, with a datum face on an axial face of the annulus pressed against a complementary datum face on the bell by a skirt extending from the bell, which skirt extends around a peripheral face of the bell into abutment with a second axial face of the annulus facing in the opposite direction to the first-mentioned axial face, there being slots in the annulus and projections from said skirt which engage in the annulus slots, characterized in that said skirt is clenched around the inner peripheral face of the annulus whereby on radial thermal expansion of the annulus, the annulus can slide outwardly relative to the bell rather than pushing the ball apart.
Claim 2
Dependent Claim
133 words
A brake disc for use in a disc brake comprising a bell and an annulus held together in a precise relationship, with a datum face on an axial face of the annulus pressed against a complementary datum face on the bell by a skirt extending from the bell, which skirt extends around a peripheral face of the bell into abutment with a second axial face of the annulus facing in the opposite direction to the first-mentioned axial face, there being slots in the annulus and projections from said skirt which engage in the annulus slots, characterized in that said skirt is clenched around the inner peripheral face of the annulus whereby on radial thermal expansion of the annulus, the annulus can slide outwardly relative to the bell rather than pushing the ball apart.
Claim 3
Dependent Claim
31 words
A brake disc according to claim 1 wherein the annulus is of the type having cooling vanes to ventilate the disc and wherein said slots are defined between the cooling vanes.
Claim 4
Dependent Claim
29 words
A brake disc according to claim 1 wherein the bell member is made as a single integral pressing and the projections are an integral part of the bell member.
Claim 5
Dependent Claim
17 words
A brake disc according to claim 1 wherein the slots are provided on an axially transverse surface.
Claim 6
Dependent Claim
16 words
A brake disc according to claim 4 wherein the slots are in said secOnd axial face.
Claim 7
Dependent Claim
38 words
A brake disc according to claim 1 wherein the projections contact the sides of the slots and are held deformed thereby so that the projections press resiliently on the sides of the slots to give a resilient pre-loading.
Claim 8
Dependent Claim
21 words
A brake disc according to claim 6 wherein the projections are held curved transversely to the slots by the sides thereof.
Claim 9
Dependent Claim
13 words
A brake disc according to claim 1 wherein the skirt is substantially continuous.
Claim 10
Dependent Claim
23 words
A brake disc according to claim 8 wherein lands left between the projections hold the datum surfaces firmly in contact with each other.
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) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |