US3578121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction disc with torsional dampener
Assignee: Valeo SE
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Filing: 1969-04-07
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Granted: 1971-05-11
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Expires: 1989-04-07
Abstract
Abstract In a clutch friction-unit of the kind comprising a friction disc mounted between two annular plates fixed to each other and coupled to said annular plates by elastic means, the retention in position of the elastic means is ensured by pressed-out portions, formed alternately as dished portions and relief portions in said annular plates.
Inventors
- 👤 Jean Maurice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:35
CPC Classifications
F; F16; F16F; F16F15/00; F16F15/10; F16F15/12; F16F15/129; F16F15/121; F16F15/123; F16F15/12313
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
165 words
A friction clutch unit with damping means, comprising a hub, a pair of parallel spaced-apart annular plates rigidly fixed to each other and carried by the hub, a friction disc between the plates and having friction material at its periphery, resilient means coupling the friction disc and said plates for conjoint rotation, the plates having a plurality of juxtaposed deformed portions that consecutively and alternately project to opposite sides of the plane of the associated plate and are arranged in circles, the plates being aligned to form pairs of said deformed portions that extend toward each other and other pairs of deformed portions that extend away from each other, said resilient means being retained tangentially between peripherally spaced pairs of said deformed portions extending toward each other thereby to limit tangential movement of said resilient means, said resilient means being disposed laterally between axially spaced pairs of said deformed portions extending away from each other to limit axial and radial moVements of said resilient means.
Claim 2
Dependent Claim
165 words
A friction clutch unit with damping means, comprising a hub, a pair of parallel spaced-apart annular plates rigidly fixed to each other and carried by the hub, a friction disc between the plates and having friction material at its periphery, resilient means coupling the friction disc and said plates for conjoint rotation, the plates having a plurality of juxtaposed deformed portions that consecutively and alternately project to opposite sides of the plane of the associated plate and are arranged in circles, the plates being aligned to form pairs of said deformed portions that extend toward each other and other pairs of deformed portions that extend away from each other, said resilient means being retained tangentially between peripherally spaced pairs of said deformed portions extending toward each other thereby to limit tangential movement of said resilient means, said resilient means being disposed laterally between axially spaced pairs of said deformed portions extending away from each other to limit axial and radial moVements of said resilient means.
Claim 3
Dependent Claim
32 words
A friction clutch unit as claimed in claim 1, said annular plates being rigidly fixed to said hub, and means resiliently mounting said friction disc for axial movement relative to said hub.
Claim 4
Dependent Claim
61 words
A friction clutch unit as claimed in claim 1, said friction material being in the form of two friction elements one between the friction disc and one of the annular plates and the other between the friction disc and the other of said plates, and means resiliently mounting said friction disc on said hub for axial movement relative to said hub.
Claim 5
Dependent Claim
24 words
A friction clutch unit as claimed in claim 3, there being metal-to-metal contact between one of said friction elements and its associated said plate.
Claim 6
Dependent Claim
34 words
A friction clutch unit as claimed in claim 4, the last-named friction element being disposed at the same radial distance from the axis of the hub as said deformed portions of the annular plates.
Claim 7
Dependent Claim
35 words
A friction clutch unit as claimed in claim 3, and a ring, a ring segment or a shoe, on at least one of said friction elements between said friction disc and the associated said plate.
Claim 8
Dependent Claim
75 words
A friction clutch unit as claimed in claim 6, the last-named said friction element being disposed in one of the following annular portions: the annular portion of the friction disc closest to the axis of the hub, the annular portion of the annular plates farthest from the axis of the hub, the portion of the annular plates that is situated at the same radial distance from the axis of the hub as said deformed portion.
Claim 9
Dependent Claim
45 words
A friction clutch unit as claimed in claim 3, said resilient mounting means being fixed between one of the annular plates and a supporting washer which is axially movable relative to the hub, said washer being fixed for rotation with the associated said annular plate.
Claim 10
Dependent Claim
19 words
A friction clutch unit as claimed in claim 3, said resilient mounting means comprising a washer with circumferential corrugations.
Claim 11
Dependent Claim
33 words
A friction clutch unit as claimed in claim 8, said washer having axial lugs at its periphery engaged in openings in the associated said plate for fixing said washer to said associated plate.
Claim 12
Dependent Claim
56 words
A friction clutch unit as claimed in claim 3, said resilient mounting means comprising at least one resilient radial lug, said lug being fixed at one of its ends to an outer facing surface of a said plate and cooperating at its other end with said friction material through an opening formed in the last-named plate.
Claim 13
Dependent Claim
28 words
A friction clutch unit as claimed in claim 11, said annular plates being fixed to the hub by means of rivets which also serve for fixing said lugs.
Claim 14
Dependent Claim
18 words
A friction clutch unit as claimed in claim 1, said deformed portions having at least one observation opening.
Claim 15
Dependent Claim
29 words
A friction clutch unit as claimed in claim 1, at least some of said deformed portions being bordered by slots that are shared with immediately adjacent said deformed portions.
Claim 16
Dependent Claim
44 words
A friction clutch unit as claimed in claim 6, each of said two friction elements comprising a friction ring, the said ring closest axially to the axially acting resilient mounting means having a coefficient of friction less than that of the other said ring.
Claim 17
Dependent Claim
41 words
A friction clutch unit as claimed in claim 6, each of said two friction elements comprising a friction ring, the said ring closest axially to said resilient mounting means having a thickness less than the thickness of the other said ring.
Claim 18
Dependent Claim
37 words
A friction clutch unit as claimed in claim 6, each of said two friction elements comprising a friction ring, the said ring axially farthest from said resilient mounting means being formed of asbestos cardboard impregnated with resin.
Claim 19
Dependent Claim
84 words
A friction clutch unit as claimed in claim 1, said friction material comprising two friction rings each mounted between one of said annular plates and said friction disc, reinforcing rings in the central portion of the friction disc for the reinforcement of the disc, and axially acting resilient means between one of said annular plates and a suppOrting washer axially movable on the hub for axially but resiliently clamping the friction rings, said supporting washer being fixed for rotation with said one annular plate.
Claim 20
Dependent Claim
151 words
A friction clutch unit with damping means comprising a hub, a pair of parallel axially spaced annular plates rigidly fixed to the hub, a friction disc disposed between the plates and having friction material at its periphery, each said plate having a circular series of alternately convex and concave deformed portions that extend alternately from opposite sides of the plane of the plate, said deformed portions terminating in free edges that are spaced axially from the free edges of the adjacent said deformed portions, the plates being so disposed that axially aligned pairs of said deformed portions alternately extend away from each other and toward each other, and resilient means disposed axially between said pairs of deformed portions that extend away from each other and tangentially between said axially aligned pairs of deformed portions that extend toward each other thereby resiliently to couple the friction disc for rotation with the hub.
Claim 21
Dependent Claim
151 words
A friction clutch unit with damping means comprising a hub, a pair of parallel axially spaced annular plates rigidly fixed to the hub, a friction disc disposed between the plates and having friction material at its periphery, each said plate having a circular series of alternately convex and concave deformed portions that extend alternately from opposite sides of the plane of the plate, said deformed portions terminating in free edges that are spaced axially from the free edges of the adjacent said deformed portions, the plates being so disposed that axially aligned pairs of said deformed portions alternately extend away from each other and toward each other, and resilient means disposed axially between said pairs of deformed portions that extend away from each other and tangentially between said axially aligned pairs of deformed portions that extend toward each other thereby resiliently to couple the friction disc for rotation with the hub.
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) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-10 | 1982-11-09 | 1983-05-11 | $7700.00 | Window Closed / Lapsed |