US4273228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction clutch
Assignee: LuK Lamellen und Kupplungsbau GmbH
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Filing: 1978-04-03
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Granted: 1981-06-16
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Expires: 1998-04-03
Abstract
Abstract A friction clutch wherein, for pivotally mounting a plate spring thereof at a clutch cover, first bracing means are provided at the cover side of the plate spring and second bracing means are provided at the side of the plate spring facing away from the clutch cover and, for forming the second bracing means, holding means punched out of the material of the clutch cover and bent away extend through recesses formed in the plate spring, the holding means being formed from the cover by a punched-out section disposed in a direction selected from the group thereof consisting of a chord direction and circumferential direction of the cover and diverted so as to extend in a substantially radial direction and perpendicularly to the plane of rotation of the clutch.
Inventors
- 👤 Lothar Huber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:44
CPC Classifications
F; F16; F16D; F16D13/00; F16D13/58; F16D13/583; F16D13/585
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
142 words
In a friction clutch wherein, for pivotally mounting a plate spring thereof at a clutch cover, the plate spring being formed with recesses, first bracing means are provided at the cover side of the plate spring and second bracing means are provided at the side of the plate spring facing away from the clutch cover and holding means for retaining the second bracing means, said holding means being punched out of the material of the clutch cover and bent away so as to extend through the recesses formed in the plate spring, said holding means being formed from the cover by a punched-out section originally extending in a direction substantially transverse to radial direction of the cover, said punched-out section being diverted so as to extend in a substantially radial plane and substantially perpendicularly to the plane of rotation of the clutch.
Claim 2
Dependent Claim
142 words
In a friction clutch wherein, for pivotally mounting a plate spring thereof at a clutch cover, the plate spring being formed with recesses, first bracing means are provided at the cover side of the plate spring and second bracing means are provided at the side of the plate spring facing away from the clutch cover and holding means for retaining the second bracing means, said holding means being punched out of the material of the clutch cover and bent away so as to extend through the recesses formed in the plate spring, said holding means being formed from the cover by a punched-out section originally extending in a direction substantially transverse to radial direction of the cover, said punched-out section being diverted so as to extend in a substantially radial plane and substantially perpendicularly to the plane of rotation of the clutch.
Claim 3
Dependent Claim
23 words
Friction clutch according to claim 1 wherein a nominal bending location is formed at the clutch cover and extends substantially in radial direction.
Claim 4
Dependent Claim
33 words
Friction clutch acording to claim 2 wherein said holding means has, at an end thereof directed away from said bending location, a holding region punched out therewith for retaining said second bracing means.
Claim 5
Dependent Claim
22 words
Friction clutch according to claim 3 wherein the second bracing means comprise an annular plate-like bracing member fixed by said holding region.
Claim 6
Dependent Claim
14 words
Friction clutch according to claim 4 wherein said annular plate-like bracing member is resilient.
Claim 7
Dependent Claim
23 words
Friction clutch according to claim 3 wherein said holding region comprises a projection formed on said holding means and extending in radial direction.
Claim 8
Dependent Claim
23 words
Friction clutch according to claim 3 wherein said holding region comprises a riveting connection of said holding means and said second bracing means.
Claim 9
Dependent Claim
45 words
Friction clutch according to claim 1 wherein said holding means have a bearing region at which it engages said second bracing means, said bearing region, at least at the surface thereof, having a hardness greater than that at the remaining region of said holding means.
Claim 10
Dependent Claim
55 words
Friction clutch according to claim 1 wherein said second bracing means comprise an annular plate-like bracing member formed with notches at a radially inner contour thereof, said notches having a width, as viewed in circumferential direction of said annular plate-like member, affording sliding of said annular plate-like member in axial direction over said holding means.
Claim 11
Dependent Claim
36 words
Friction clutch according to claim 1 wherein said second bracing means comprise an annular plate-like bracing member formed with contours engageable by a tool for rotation of said annular bracing member relative to said holding means.
Claim 12
Dependent Claim
31 words
Friction clutch according to claim 10 wherein said contours are engageable by the tool for rotation of said annular bracing member relative to said holding means in both directions of rotation.
Claim 13
Dependent Claim
23 words
Friction clutch according to claim 10 wherein said contours are formed of radially inwardly directed projections extending from said annular plate-like bracing member.
Claim 14
Dependent Claim
61 words
Friction clutch according to claim 1 wherein said second bracing means comprise an annular plate-like bracing member formed with radial recesses along the inner circumference thereof, said annular plate-like member being formed behind at least one of said radial recesses with an inclined surface rising in axial direction of the clutch, as viewed in circumferential direction of said annular plate-like member.
Claim 15
Dependent Claim
30 words
Friction clutch according to claim 13 wherein said inclined surface, as viewed in circumferential direction of said annular plate-like member, merges into a reversing surface extending in opposite axial direction.
Claim 16
Dependent Claim
50 words
Friction clutch according to claim 14 wherein, in connection with said reversing surface, as viewed in circumferential direction of said annular plate-like member, an additional inclined surface is formed on the annular plate-like member and projects in a direction corresponding to the direction in which the first-mentioned inclined surface extends.
Claim 17
Dependent Claim
21 words
Friction clutch according to claim 13, wherein said inclined surface is formed of a punched-out section extending substantially in circumferential direction.
Claim 18
Dependent Claim
34 words
Friction clutch according to claim 16 wherein an end of said punched-out section directed in one circumferential direction forms an antirotation protective device on a contour of said holding means extending in axial direction.
Claim 19
Dependent Claim
39 words
Friction clutch according to claim 17 including another antirotation protective device provided at said annular plate-like member and effective in the other circumferential direction, said other antirotation protective device being symmetric to a symmetry plane extending in radial direction.
Claim 20
Dependent Claim
18 words
Friction clutch according to claim 1 wherein said punched-out section originally extends in chordal direction of the clutch.
Claim 21
Dependent Claim
18 words
Friction clutch according to claim 1 wherein said punched-out section originally extends in circumferential direction of the clutch.
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) | 1984-06-15 | 1984-12-15 | 1985-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-15 | 1988-12-15 | 1989-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-15 | 1992-12-15 | 1993-06-16 | $7700.00 | Window Closed / Lapsed |