US4378869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clutch disc
Assignee: LuK Lamellen und Kupplungsbau GmbH
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Filing: 1980-01-18
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Granted: 1983-04-05
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Expires: 2000-01-18
Abstract
Abstract A clutch disc, especially for use in friction clutches of motor vehicles, has two subassemblies one of which is held against rotation with respect to the hub and the other of which is held against rotation with respect to the friction linings. The limited angular movement between the two subassemblies is opposed, at least in part, by energy accumulators and friction. An element participating in the generation of friction is a washer-like part which is under the action of axial spring force and is pushed, on the one hand, against a part of the one subassembly and, on the other hand, has a form fit effective against angular movement with a part of the other subassembly. The form-fitting connection is established by engagement of at least one contour which changes in the axial direction in wedge- or cone-fashion and is provided at least on one part forming the form-fitting connection with at least one countercontour provided on at least one other part forming the connection.
Inventors
- 👤 Oswald Friedmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:46
CPC Classifications
F; F16; F16F; F16F15/00; F16F15/10; F16F15/12; F16F15/129
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
164 words
A clutch disc, especially for use in friction clutches of motor vehicles, comprising a first subassembly including a rotary hub; a second subassembly coaxial with said first subassembly, including at least one friction lining and being rotatable within limits relative to said first assembly; energy accumulator means interposed between and arranged to oppose at least some of the limited angular movement of said subassemblies relative to each other; and friction generating means interposed between said subassemblies and including a substantially washer-like axially stressed part which reacts against one of said subassemblies and establishes a form fitting connection with the other of said subassemblies, said other subassembly including at least one additional part which establishes said connection with said washer-like part, one of said parts including at least one contour which tapers in the axial direction of said subassemblies and the other of said parts having a countercontour in engagement with said contour to hold such parts against angular movement with reference to one another.
Claim 2
Dependent Claim
164 words
A clutch disc, especially for use in friction clutches of motor vehicles, comprising a first subassembly including a rotary hub; a second subassembly coaxial with said first subassembly, including at least one friction lining and being rotatable within limits relative to said first assembly; energy accumulator means interposed between and arranged to oppose at least some of the limited angular movement of said subassemblies relative to each other; and friction generating means interposed between said subassemblies and including a substantially washer-like axially stressed part which reacts against one of said subassemblies and establishes a form fitting connection with the other of said subassemblies, said other subassembly including at least one additional part which establishes said connection with said washer-like part, one of said parts including at least one contour which tapers in the axial direction of said subassemblies and the other of said parts having a countercontour in engagement with said contour to hold such parts against angular movement with reference to one another.
Claim 3
Dependent Claim
38 words
The clutch disc of claim 1, wherein said one part has at least one axially extending arm which defines said contour and said countercontour cooperates with said contour to establish a substantially wedge-like interlocking action between said parts.
Claim 4
Dependent Claim
15 words
The clutch disc of claim 2, wherein said arm is provided on said washer-like part.
Claim 5
Dependent Claim
17 words
The clutch disc of claim 2, wherein said one part is an element of said second subassembly.
Claim 6
Dependent Claim
37 words
The clutch disc of claim 2, wherein said arm is a protrusion which is formed by displacement of the material of said one part and said other part has a recess which is bounded by said countercontour.
Claim 7
Dependent Claim
13 words
The clutch disc of claim 1, wherein one of said parts is resilient.
Claim 8
Dependent Claim
14 words
The clutch disc of claim 6, wherein said resilient part is a cup spring.
Claim 9
Dependent Claim
49 words
The clutch disc of claim 6, wherein said resilient part constitutes an element of said first subassembly so that it is held against rotation relative to said hub, said second subassembly further comprising a support disc for said lining and said resilient part bearing directly against said support disc.
Claim 10
Dependent Claim
42 words
The clutch disc of claim 1, wherein said one part is resilient and constitutes said washer-like part, said washer-like part having an inner portion, as considered in the radial direction of said subassemblies, which includes at least one arm defining said contour.
Claim 11
Dependent Claim
110 words
The clutch disc of claim 1, wherein said one part is resilient and constitutes and washer-like part, the subassembly including said additional part further including a third part which establishes a second form fitting connection with said resilient part, one of the parts including said resilient part and said third part having at least one second contour which tapers in the axial direction of said subassemblies and the other of the parts including said resilient part and said third part having at least one second countercontour complementary to and engaging with said second contour to hold said resilient part and said third part against angular movement relative to one another.
Claim 12
Dependent Claim
103 words
The clutch disc of claim 1, wherein said one part is resilient and constitutes said washer-like part, said resilient part having inner and outer portions, as considered in the radial direction of said subassemblies, said outer portion having at least one substantially axially extending first arm defining said contour and said inner portion having at least one substantially axially extending second arm defining a second contour, the subassembly which includes said additional part further including a third part defining a second countercontour cooperating with said second contour to hold said resilient part and said third part against angular movement relative to one another.
Claim 13
Dependent Claim
121 words
The clutch disc of claim 1, wherein said one part is resilient and constitutes said washer-like part, said washer-like part having inner and outer portions, as considered in the radial direction of said subassemblies, respectively including at least one substantially radially extending first arm and at least one substantially radially extending second arm, said first arm defining said contour and said additional part having at least one substantially axially extending third arm defining said countercontour, the subassembly which includes said additional part further including a third part having at least one substantially axially extending fourth arm defining a second countercontour cooperating with said second contour to hold said washer-like part and said third part against angular movement relative to one another.
Claim 14
Dependent Claim
100 words
The clutch disc of claim 1, wherein said second subassembly further includes a first disc constituting a support for said lining and a second disc spaced apart from and rigid with said first disc, said first subassembly further including a flange rigid with and extending radially outwardly from said hub and disposed between said discs, said friction generating means further including two slide linings flanking said flange and said parts being disposed between one of said slide linings and one of said discs, and further comprising a second form fitting connection provided between said one part and said one disc.
Claim 15
Dependent Claim
115 words
The clutch disc of claim 1, wherein said second subassembly further includes a first disc constituting a support for said lining and a second disc spaced apart from and rigid with said first disc, said hub having a radially outwardly extending flange disposed between said discs and said friction generating means further comprising two slide linings flanking one of said discs, said first subassembly further including an annular element rigid with and extending radially outwardly from said hub, said parts being disposed between said annular element and said one disc, said one part and said annular element defining a second form fitting connection which holds said one part against angular movement relative to said hub.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-04-04 | 1986-10-04 | 1987-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-04-04 | 1990-10-04 | 1991-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-04-04 | 1994-10-04 | 1995-04-05 | $7700.00 | Window Closed / Lapsed |