US4428472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sliding sleeve for clutch throw-out
Assignee: SKF GmbH
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Filing: 1981-02-11
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Granted: 1984-01-31
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Expires: 2001-02-11
Abstract
Abstract A sliding sleeve for a clutch throw-out wherein the clutch lever pressure plate is axially and circumferentially fixed on the hub element on one side by a plurality of protrusions formed on that side of the plate and engageable on the hub element, and on the other side by a shoulder machined in the hub element.
Inventors
- 👤 Armin Olschewski
- 👤 Manfred Brandenstein
- 👤 Lothar Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:31
CPC Classifications
F; F16; F16D; F16D23/00; F16D23/12; F16D23/14
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
117 words
In a sliding sleeve for a clutch release including a hub element with a cylindrical surface, a pressure plate connected to said hub element, said pressure plate having abutting surfaces for a self-centering clutch thrust-bearing and for an actuating lever of the clutch; the improvement wherein said hub element has a plurality of radially extending protrusions spaced about its circumference, said pressure plate surrounding the cylindrical surface of said hub element, the side of said pressure plate facing said actuating lever abutting a shoulder of said hub element, the side of said pressure plate facing said clutch thrust-bearing axially abutting said protrusions, said protrusions having abutting surfaces positioned to circumferentially engage a bearing ring of said bearing.
Claim 2
Dependent Claim
117 words
In a sliding sleeve for a clutch release including a hub element with a cylindrical surface, a pressure plate connected to said hub element, said pressure plate having abutting surfaces for a self-centering clutch thrust-bearing and for an actuating lever of the clutch; the improvement wherein said hub element has a plurality of radially extending protrusions spaced about its circumference, said pressure plate surrounding the cylindrical surface of said hub element, the side of said pressure plate facing said actuating lever abutting a shoulder of said hub element, the side of said pressure plate facing said clutch thrust-bearing axially abutting said protrusions, said protrusions having abutting surfaces positioned to circumferentially engage a bearing ring of said bearing.
Claim 3
Dependent Claim
21 words
The sliding sleeve of claim 1 wherein said protrusions are made with a tee-shaped cross-section the protrusions having circumferentially extending members.
Claim 4
Dependent Claim
32 words
The sliding sleeve of claim 1 wherein said protrusions are provided with abutting surfaces adapted to abut against tongues of a damping ring surrounding said sleeve, said tongues having a spring action.
Claim 5
Dependent Claim
29 words
The sliding sleeve of claim 1 wherein said pressure plate includes a pair of diametrically opposed lugs, said lugs being arranged with abutting surfaces for abutting said actuating lever.
Claim 6
Dependent Claim
21 words
The sliding sleeve of claim 1 wherein said pressure plate is provided with recesses on the sides facing said actuating lever.
Claim 7
Dependent Claim
31 words
The sliding sleeve of claim 1 wherein said pressure plate includes, on the side facing said clutch thrust-bearing, a plurality of axially directed projections, which projections are surrounded by said protrusions.
References Cited (Backward Citations)
US3882979A
Cited
US3963106A
Cited
FR2255505B1
Cited
US4143748A
Cited
US4125181A
Cited
US4306641A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-01-30 | 1987-08-01 | 1988-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-30 | 1991-08-01 | 1992-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-30 | 1995-08-01 | 1996-01-31 | $7700.00 | Window Closed / Lapsed |