US4340135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clutch release device
Assignee: SKF GmbH
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Filing: 1980-03-03
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Granted: 1982-07-20
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Expires: 2000-03-03
Abstract
Abstract A clutch release device has a pressure plate mounted on a sliding sleeve, and a stationary ring of a bearing abut one side of the pressure plate. A clutch lever abuts the other side of the pressure plate, and is held from axial removal by a ring having a flexible outer rim. The holding ring is held to the pressure plate by a flange on the sliding sleeve. The clutch lever has a central aperture fitted over a central conical portion of the pressure plate, the aperture having a pair of inwardly directed projections. The outer diameter of the holding ring is greater than the distance between the facing ends of the projections.
Inventors
- 👤 Armin Olschewski
- 👤 Manfred Brandenstein
- 👤 Lothar Walter
- 👤 Heinrich Kunkel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:41
CPC Classifications
F; F16; F16D; F16D23/00; F16D23/12; F16D23/14; F16B; F16B2200/00; F16B2200/40; F16B2200/406
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
166 words
In a clutch release device including a pressure plate, a sliding sleeve extending into and connected to the pressure plate, and a clutch thrust bearing having a stationary bearing ring axially abutting the pressure plate, the stationary bearing ring being secured in the axial direction and against turning with respect to the pressure plate, and a clutch lever affixed to the pressure plate by means of corresponding interconnecting elements; the improvement wherein the sliding sleeve has a flange on the side thereof away from the stationary bearing ring, wherein a holding ring is provided between the flange of the sliding sleeve and the pressure plate, the holding ring having an elastic outer rim, the clutch lever having an aperture with radially opposite inwardly directed projections, the outer diameter of the holding ring being greater than the distance between the surfaces of the projections of the clutch lever that are directed toward one another, the clutch lever being held against said pressure plate by said holding ring.
Claim 2
Dependent Claim
166 words
In a clutch release device including a pressure plate, a sliding sleeve extending into and connected to the pressure plate, and a clutch thrust bearing having a stationary bearing ring axially abutting the pressure plate, the stationary bearing ring being secured in the axial direction and against turning with respect to the pressure plate, and a clutch lever affixed to the pressure plate by means of corresponding interconnecting elements; the improvement wherein the sliding sleeve has a flange on the side thereof away from the stationary bearing ring, wherein a holding ring is provided between the flange of the sliding sleeve and the pressure plate, the holding ring having an elastic outer rim, the clutch lever having an aperture with radially opposite inwardly directed projections, the outer diameter of the holding ring being greater than the distance between the surfaces of the projections of the clutch lever that are directed toward one another, the clutch lever being held against said pressure plate by said holding ring.
Claim 3
Dependent Claim
33 words
The clutch release device of claim 1 wherein the outer rim of the holding ring is angled toward the pressure plate and is provided with a plurality of slits distributed about its circumference.
Claim 4
Dependent Claim
30 words
The clutch release device of claim 1 wherein the pressure plate has a conical section between an outer radially extending flange and an inner cylindrical part engaging the sliding sleeve.
Claim 5
Dependent Claim
49 words
The clutch release device of claim 3, wherein the pressure plate has at least two diametrically opposite slots in the region of the conical section, the slots extending in the axial direction to the opposite radial surface of the pressure plate, said stationary bearing ring abutting said opposite surface.
Claim 6
Dependent Claim
176 words
A clutch release device comprising a sliding sleeve, an annular pressure plate mounted co-axially on said sliding sleeve and having an outer radially extending portion, an inner cylindrical portion fitted over said sliding sleeve, and a central conical section, a bearing including a stationary bearing ring abutting one side of said radially extending portion, said conical section and cylindrical portion extending away from said bearing ring, a clutch lever having an aperture fitted over said conical portion and abutting the other side of said pressure plate, said aperture having a pair of diametrically opposite inwardly directed projections, a holding ring fitted over said sleeve adjacent said cylindrical portion, said holding ring having a flexible outer rim angled toward said outer radially extending portion of said pressure plate and axially holding said clutch lever with respect to said pressure plate, and a flange on said sleeve positioned to hold said ring against the end of said cylindrical portion, the outer diameter of said holding ring being greater than the distance between the facing ends of said projections.
Claim 7
Dependent Claim
176 words
A clutch release device comprising a sliding sleeve, an annular pressure plate mounted co-axially on said sliding sleeve and having an outer radially extending portion, an inner cylindrical portion fitted over said sliding sleeve, and a central conical section, a bearing including a stationary bearing ring abutting one side of said radially extending portion, said conical section and cylindrical portion extending away from said bearing ring, a clutch lever having an aperture fitted over said conical portion and abutting the other side of said pressure plate, said aperture having a pair of diametrically opposite inwardly directed projections, a holding ring fitted over said sleeve adjacent said cylindrical portion, said holding ring having a flexible outer rim angled toward said outer radially extending portion of said pressure plate and axially holding said clutch lever with respect to said pressure plate, and a flange on said sleeve positioned to hold said ring against the end of said cylindrical portion, the outer diameter of said holding ring being greater than the distance between the facing ends of said projections.
Claim 8
Dependent Claim
22 words
The clutch release device of claim 5 comprising means for axially holding said stationary bearing ring with respect to said pressure plate.
Claim 9
Dependent Claim
35 words
The clutch release device of claim 5 wherein said conical section has slits extending axially therethrough in the region of said outer radially extending portion, said projections of said clutch lever extending into said slits.
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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) | 1985-07-19 | 1986-01-18 | 1986-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-19 | 1990-01-18 | 1990-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-19 | 1994-01-18 | 1994-07-20 | $7700.00 | Window Closed / Lapsed |