Patent US3892302A successfully refreshed from Google Patents.
US3892302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle disc clutch with plural release levers
Assignee: Valeo SE
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Filing: 1974-01-22
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Granted: 1975-07-01
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Expires: 1994-01-22
Abstract
Abstract In a clutch having two clutch assemblies disposed axially one behind the other controlled respectively by two clutch release levers, the control means for the clutch release levers comprise two operative elements mounted for axial movement in opposite directions, one of the elements being adapted to apply a thrust to one clutch release lever and the other of the elements being adapted to apply a traction to the other clutch release lever, operating means being interposed between the said elements to simultaneously move the elements in opposite directions.
Inventors
- 👤 Michel Rist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:17
CPC Classifications
F; F16; F16D; F16D25/00; F16D25/08; F16D13/00; F16D13/22; F16D13/38; F16D13/385
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
223 words
A clutch comprising two coaxial clutch assemblies each of the said clutch assemblies including a reaction plate adapted to be fastened for rotation with a first shaft, a friction disc movable axially with respect to the reaction plate and adapted to be fastened for rotation with a second shaft, a driven shaft to which both friction discs are fixed, a pressure plate movable axially with respect to the reaction plate and fastened for rotation thereto, resilient means urging the pressure plate toward the reaction plate in order to grip the friction discs, and at least one pivotally mounted clutch release lever, in combination with control means adapted to effect the pivoting of said at least one clutch release lever of each clutch assembly, in order to release the corresponding friction discs, said control means including two operative elements mounted for movement parallel to the axis of the clutch, one said operative element acting on said at least one clutch release lever of a first one of said clutch assemblies axially in a first direction, and the other said operative element acting on said at least one clutch release lever of a second one of said clutch assemblies axially in a second direction opposite to said first direction, and operating means to effect the simultaneous operation of said two operative elements in opposite directions.
Claim 2
Dependent Claim
223 words
A clutch comprising two coaxial clutch assemblies each of the said clutch assemblies including a reaction plate adapted to be fastened for rotation with a first shaft, a friction disc movable axially with respect to the reaction plate and adapted to be fastened for rotation with a second shaft, a driven shaft to which both friction discs are fixed, a pressure plate movable axially with respect to the reaction plate and fastened for rotation thereto, resilient means urging the pressure plate toward the reaction plate in order to grip the friction discs, and at least one pivotally mounted clutch release lever, in combination with control means adapted to effect the pivoting of said at least one clutch release lever of each clutch assembly, in order to release the corresponding friction discs, said control means including two operative elements mounted for movement parallel to the axis of the clutch, one said operative element acting on said at least one clutch release lever of a first one of said clutch assemblies axially in a first direction, and the other said operative element acting on said at least one clutch release lever of a second one of said clutch assemblies axially in a second direction opposite to said first direction, and operating means to effect the simultaneous operation of said two operative elements in opposite directions.
Claim 3
Dependent Claim
31 words
A clutch according to claim 1, wherein the pressure plates are disposed between the reaction plates and resilient means common to the two pressure plates are disposed between the pressure plates.
Claim 4
Dependent Claim
96 words
A clutch according to claim 1, wherein each of said two operative elements comprises a thrust ring engaging for axial movement a traction sleeve also mounted for axial movement, said traction sleeve having at each of its ends a radial projection, one of the projections cooperating with said at least one clutch release lever of the second clutch assembly and the other of the projections cooperating with the associated said operating means which, in order to act on saiD at least one clutch release lever of the first clutch assembly, also bears against said thrust ring.
Claim 5
Dependent Claim
13 words
A clutch according to claim 3, wherein the thrust ring has bearing means.
Claim 6
Dependent Claim
31 words
A clutch according to claim 3, and bearing means between said at least one clutch release lever of the second clutch assembly and the corresponding radial projection on the traction sleeve.
Claim 7
Dependent Claim
39 words
A clutch according to claim 1, wherein the operating means comprise two levers which in a median position are pivotally connected to each other and in which one end of each lever bears against one of said operative elements.
Claim 8
Dependent Claim
24 words
A clutch according to claim 6, wherein said one end of said levers which bear against said operative elements is formed as a fork.
Claim 9
Dependent Claim
40 words
A clutch according to claim 7, wherein the other end of one of said levers is subjected to the action of hydraulic actuating means, and the other end of the other of said levers is pivoted about a fixed point.
Claim 10
Dependent Claim
19 words
A clutch according to claim 8, wherein said levers are pivotally connected to each other remote from their ends.
Claim 11
Dependent Claim
36 words
A clutch according to claim 1, wherein said operating means are hydraulically operated and comprise at least one piston movable parallel to the axis of the clutch, said piston bearing against one of said operative elements.
Claim 12
Dependent Claim
28 words
A clutch according to claim 10, wherein said piston is located in a blind cylinder formed in a casing that bears against the other of said operative elements.
Claim 13
Dependent Claim
57 words
A clutch according to claim 10, wherein said piston is located in a cylinder formed in a casing and is open at both ends, and there is a second piston associated therewith and mounted for movement in the said cylinder in a direction opposite to the first piston and bearing against the other of said operative elements.
Claim 14
Dependent Claim
27 words
A clutch according to claim 10, wherein the piston is located in a cylinder formed in a stirrup-shaped casing having two arms engaging transversely the support sleeve.
Claim 15
Dependent Claim
51 words
A clutch according to claim 1, wherein the operating means comprise two lips, each of which is formed respectively on one of the operative elements and diverge from each other, the lips cooperating with at least one wedge disposed therebetween, which wedge moves between the lips to drive the lips apart.
Claim 16
Dependent Claim
35 words
A clutch according to claim 14, wherein said lips diverge from each other away from the axis of the clutch, and each wedge is mounted for movement in a direction substantially perpendicular to said axis.
Claim 17
Dependent Claim
38 words
A clutch according to claim 14, wherein said lips diverge from each other in a direction parallel to the axis of the clutch, and each wedge is mounted for movement in a direction substantially parallel to said axis.
Claim 18
Dependent Claim
16 words
A clutch according to claim 14, wherein two wedges are provided acting in diametrically opposite positions.
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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) | 1978-06-30 | 1978-12-30 | 1979-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-30 | 1982-12-30 | 1983-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-30 | 1986-12-30 | 1987-07-01 | $7700.00 | Window Closed / Lapsed |