US3696902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clutch disc with metallic friction facings
Assignee: ZF Friedrichshafen AG
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Filing: 1971-07-14
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Granted: 1972-10-10
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Expires: 1991-07-14
Abstract
Abstract The opposite friction facings of solid metal or sintered powder metal on the driven disc of a friction clutch are mounted on respective, normally convex faces of pairs of carriers which are symmetrical relative to a radial plane and are prevented from bulging apart by rivets which also fasten the facings to the carriers. The convex faces are directed in opposite axial directions, and the rivets pass through them along lines which are farthest from corresponding lines on the other carrier of the pair.
Inventors
- 👤 Johann Dantele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:19
CPC Classifications
F; F16; F16D; F16D13/00; F16D13/58; F16D13/60; F16D13/64; F16D2013/642
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
206 words
A friction disc assembly for a friction clutch comprising, in combination: a. an annular disc body having an axis; b. a plurality of pairs of facing carriers of resilient material projecting radially outward from said disc body in circumferentially offset relationship, 1. the carriers of each pair being axially offset and substantially symmetrical relative to a plane transverse to said axis, 2. each carrier of said pair having a face directed axially away from said plane and convexly arcuate in all axial sections, 3. the points on each face farthest in said sections from the axially aligned poiNts on the face of the other carrier jointly defining a line on the corresponding face, said line being remote from said axis; 4. a socket member associated with each face and open in a direction away from the associated face; c. a substantially metallic friction facing member partly received in each socket member; and d. a plurality of circumferentially spaced rivets passing through said faces substantially in said lines, each rivet including a plurality of enlarged portions, said portions limiting movement of said faces away from each other and securing a friction facing member and the socket member receiving the last-mentioned friction facing member to the associated carrier.
Claim 2
Dependent Claim
206 words
A friction disc assembly for a friction clutch comprising, in combination: a. an annular disc body having an axis; b. a plurality of pairs of facing carriers of resilient material projecting radially outward from said disc body in circumferentially offset relationship, 1. the carriers of each pair being axially offset and substantially symmetrical relative to a plane transverse to said axis, 2. each carrier of said pair having a face directed axially away from said plane and convexly arcuate in all axial sections, 3. the points on each face farthest in said sections from the axially aligned poiNts on the face of the other carrier jointly defining a line on the corresponding face, said line being remote from said axis; 4. a socket member associated with each face and open in a direction away from the associated face; c. a substantially metallic friction facing member partly received in each socket member; and d. a plurality of circumferentially spaced rivets passing through said faces substantially in said lines, each rivet including a plurality of enlarged portions, said portions limiting movement of said faces away from each other and securing a friction facing member and the socket member receiving the last-mentioned friction facing member to the associated carrier.
Claim 3
Dependent Claim
21 words
each carrier of said pair having a face directed axially away from said plane and convexly arcuate in all axial sections,
Claim 4
Dependent Claim
21 words
each carrier of said pair having a face directed axially away from said plane and convexly arcuate in all axial sections,
Claim 5
Dependent Claim
31 words
An assembly as set forth in claim 1, wherein said lines are approximately straight, each line being perpendicular to a radius drawn on said axis and circumferentially bisecting the corresponding carrier.
Claim 6
Dependent Claim
36 words
the points on each face farthest in said sections from the axially aligned poiNts on the face of the other carrier jointly defining a line on the corresponding face, said line being remote from said axis;
Claim 7
Dependent Claim
36 words
the points on each face farthest in said sections from the axially aligned poiNts on the face of the other carrier jointly defining a line on the corresponding face, said line being remote from said axis;
Claim 8
Dependent Claim
90 words
An assembly as set forth in claim 1, wherein two of said enlarged portions of one of said rivets bound an annular groove in said rivet, respective portions of one carrier and of the socket member associated with the face of said one carrier being received in said groove, a third enlarged portion of said one rivet abuttingly engaging the socket member associated with the face of the other carrier and securing the engaged socket against movement away from said one carrier under the resilient pressure of said other carrier.
Claim 9
Dependent Claim
44 words
An assembly as set forth in claim 3, another one of said rivets having two enlarged portions bounding an annular groove in said other rivet, respective portions of said other carrier and of the socket member associated therewith being received in the last-mentioned groove.
Claim 10
Dependent Claim
85 words
a socket member associated with each face and open in a direction away from the associated face; c. a substantially metallic friction facing member partly received in each socket member; and d. a plurality of circumferentially spaced rivets passing through said faces substantially in said lines, each rivet including a plurality of enlarged portions, said portions limiting movement of said faces away from each other and securing a friction facing member and the socket member receiving the last-mentioned friction facing member to the associated carrier.
Claim 11
Dependent Claim
85 words
a socket member associated with each face and open in a direction away from the associated face; c. a substantially metallic friction facing member partly received in each socket member; and d. a plurality of circumferentially spaced rivets passing through said faces substantially in said lines, each rivet including a plurality of enlarged portions, said portions limiting movement of said faces away from each other and securing a friction facing member and the socket member receiving the last-mentioned friction facing member to the associated carrier.
Claim 12
Dependent Claim
22 words
An assembly as set forth in claim 1, said friction facing members being plates having each the approximate shape of a trapezium.
Claim 13
Dependent Claim
24 words
An assembly as set forth in claim 1, wherein a portion of said line between two of said rivets is closest to said axis.
Claim 14
Dependent Claim
34 words
An assembly as set forth in claim 1, wherein said line connects two of said rivets and projects beyond one of said rivets, the projecting portion of said line being closest to said axis.
Claim 15
Dependent Claim
19 words
An assembly as set forth in claim 1, wherein respective unitary portions of said carriers constitute said disc body.
Claim 16
Dependent Claim
19 words
An assembly as set forth in claim 1, wherein said friction facing member essentially consists of sintered metal powder.
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) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |