US4365697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction clutch
Assignee: LuK Lamellen und Kupplungsbau GmbH
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Filing: 1980-07-03
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Granted: 1982-12-28
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Expires: 2000-07-03
Abstract
Abstract A friction clutch having a diaphragm spring formed with a ring-shaped base and tabs extending radially inwardly from the base and separated by slots from one another. The slots terminate radially outwardly in hole-like cutouts and the disc spring is tiltably supported on a part of the clutch and is clamped between a first roll-off support at the clutch part and a substantially circular discrete second roll-off support at the side of the disc spring facing away from the clutch part. The second roll-off support is acted upon by the spring when the clutch is disengaged and the first roll-off support is acted upon by the spring when the clutch is engaged. Holding means secure the second support to the clutch part, and the second roll-off support engages the spring radially outwardly of the cutouts and is formed, in the vicinity of each of the cutouts, with an interruption extending along at least 50% of the length of the respective cutout, as considered in the circumferential direction clutch.
Inventors
- 👤 Rudolf Honemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:49
CPC Classifications
F; F16; F16D; F16D13/00; F16D13/58; F16D13/583; F16D13/585; F16D13/70; F16D2013/706
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
147 words
A friction clutch, comprising a diaphragm spring including a ring-shaped base and tabs extending radially inwardly from the base and separated by slots terminating radially outwardly in hole-like cutouts, a clutch part having a first roll-off support at one side of the spring, a substantially circular discrete second roll-off support at the other side of the spring, the second roll-off support being acted upon by the spring when the clutch is disengaged and the first roll-off support being acted upon by the spring when the clutch is engaged, and holding means securing the second support to the clutch part, the second support engaging the spring radially outwardly of the cutouts and having, in the vicinity of each of the cutouts, an interruption facing the spring and extending along at least 50% of the length of the respective cutout, as considered in the circumferential direction of the clutch.
Claim 2
Dependent Claim
147 words
A friction clutch, comprising a diaphragm spring including a ring-shaped base and tabs extending radially inwardly from the base and separated by slots terminating radially outwardly in hole-like cutouts, a clutch part having a first roll-off support at one side of the spring, a substantially circular discrete second roll-off support at the other side of the spring, the second roll-off support being acted upon by the spring when the clutch is disengaged and the first roll-off support being acted upon by the spring when the clutch is engaged, and holding means securing the second support to the clutch part, the second support engaging the spring radially outwardly of the cutouts and having, in the vicinity of each of the cutouts, an interruption facing the spring and extending along at least 50% of the length of the respective cutout, as considered in the circumferential direction of the clutch.
Claim 3
Dependent Claim
12 words
The clutch of claim 1, wherein the second roll-off support is spring-loaded.
Claim 4
Dependent Claim
14 words
The clutch of claim 1, wherein the second roll-off support is a resilient member.
Claim 5
Dependent Claim
13 words
The clutch of claim 3, wherein said resilient member is a plate spring.
Claim 6
Dependent Claim
38 words
The clutch of claim 1, wherein the clutch part is the cover of the clutch and the holding means extend from the clutch cover axially through the spring and connect the second roll-off support to the clutch cover.
Claim 7
Dependent Claim
13 words
The clutch of claim 1, wherein the second roll-off support is a ring.
Claim 8
Dependent Claim
12 words
The clutch of claim 6, wherein said ring is a wire ring.
Claim 9
Dependent Claim
26 words
The clutch of claim 1, wherein the interruptions of the second roll-off support are axial depressions and the second support includes projections alternating with said interruptions.
Claim 10
Dependent Claim
20 words
The clutch of claim 1, wherein the interruptions of the second roll-off support are deformed portions of such second support.
Claim 11
Dependent Claim
22 words
The clutch of claim 1, wherein the interruptions of the second roll-off support are embossments in the material of said second support.
Claim 12
Dependent Claim
19 words
The clutch of claim 1, wherein the interruptions of the second roll-off support are voids in said second support.
Claim 13
Dependent Claim
21 words
The clutch of claim 1, wherein the interruptions of the second roll-off support are holes provided in said second roll-off support.
References Cited (Backward Citations)
US2885047A
Cited
US3213991A
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US3595355A
Cited
DE1808802A1
Cited
GB1388072A
Cited
US4114742A
Cited
US4126216A
Cited
US4273228A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-12-27 | 1986-06-28 | 1986-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-27 | 1990-06-28 | 1990-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-27 | 1994-06-28 | 1994-12-28 | $7700.00 | Window Closed / Lapsed |