Patent US3970177A successfully refreshed from Google Patents.
US3970177A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic release mechanism for clutches
Assignee: SKF Industrial Trading and Development Co BV
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Filing: 1974-11-26
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Granted: 1976-07-20
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Expires: 1994-11-26
Abstract
Abstract A hydraulic release mechanism for automobile clutches comprising a housing open at one end and a bearing. The bearing comprises a rotating race ring adapted to be connected to the operating member of the clutch, a non-rotating race ring and a plurality of rolling elements located therebetween. The non-rotating race ring is slidably arranged with respect to the housing, and seal means is arranged between the housing and the axial frontal end of the non-rotating race ring to enclose space between the sliding surfaces while permitting the race ring to move on introduction of pressurized fluid into the housing.
Inventors
- 👤 Roy Peter Garrett
- 👤 Derek Ray Parkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:03
CPC Classifications
F; F16; F16D; F16D25/00; F16D25/08; F16D25/082; F16D25/086; F16D25/083; Y; Y10; Y10S; Y10S92/00; Y10S92/01
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
136 words
A hydraulic release mechanism for automobile clutches and the like comprising a housing open at one end, a bearing located within said housing comprising a rotating race ring adapted to be connected to the operating member of said clutch, a non-rotating race ring and a plurality of rolling elements located therebetween, said non-rotating race ring being slidably arranged with respect to the housing, and including slidable seal means enclosing the space between the housing and the non-rotating race ring to permit said race ring to slide on introduction of pressurized fluid into said housing without loss of fluid, said rotating ring being the inner ring of said bearing and said operating element is a thin walled cup-shaped member secured to the inner race ring and covering the open end of the bearing and the release mechanism.
Claim 2
Dependent Claim
136 words
A hydraulic release mechanism for automobile clutches and the like comprising a housing open at one end, a bearing located within said housing comprising a rotating race ring adapted to be connected to the operating member of said clutch, a non-rotating race ring and a plurality of rolling elements located therebetween, said non-rotating race ring being slidably arranged with respect to the housing, and including slidable seal means enclosing the space between the housing and the non-rotating race ring to permit said race ring to slide on introduction of pressurized fluid into said housing without loss of fluid, said rotating ring being the inner ring of said bearing and said operating element is a thin walled cup-shaped member secured to the inner race ring and covering the open end of the bearing and the release mechanism.
Claim 3
Dependent Claim
31 words
The release mechanism according to claim 1 wherein said seal means is located adjacent the axial frontal end of said non-rotating race ring and slidably engages the surface of said housing.
Claim 4
Dependent Claim
30 words
The hydraulic release mechanism according to claim 1 wherein the housing and the non-rotating race ring are cylindrical and said non-rotating race ring comprises the outer race of the bearing.
Claim 5
Dependent Claim
35 words
The release mechanism according to claim 1 wherein the non-rotating race ring is provided with a cover disc at its frontal end within the housing defining an enclosed chamber with the walls of the housing.
Claim 6
Dependent Claim
27 words
The release bearing according to claim 4 wherein said cover disc is located between the frontal end of said non-rotating race ring and said slidable seal means.
Claim 7
Dependent Claim
18 words
The release mechanism according to claim 4 wherein the cover disc and the non-rotating race ring are separable.
Claim 8
Dependent Claim
32 words
The release mechanism according to claim 1 wherein the rotating race ring is the inner ring of said bearing and wherein the clutch operating element is secured to the inner race ring.
Claim 9
Dependent Claim
20 words
The release mechanism according to claim 1 wherein the inner race ring is integrally formed with the clutch operating element.
Claim 10
Dependent Claim
22 words
The release mechanism according to claim 1 including an intermediate elastic sleeve arranged between the operating element and the rotating race ring.
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) | 1979-07-20 | 1980-01-19 | 1980-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-20 | 1984-01-19 | 1984-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-20 | 1988-01-19 | 1988-07-20 | $7700.00 | Window Closed / Lapsed |