Patent US4515745A successfully refreshed from Google Patents.
Patent US3603438A successfully refreshed from Google Patents.
US3603438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction clutch for an automobile
Assignee: Nissan Motor Co Ltd
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Filing: 1969-05-19
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Granted: 1971-09-07
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Expires: 1989-05-19
Abstract
Abstract A friction clutch for an automobile which is so formed as to permit quick release of a drive portion and driven portion by providing an additional releasing effort therebetween. The friction clutch comprises a drive portion consisting of a flywheel secured to the engine shaft, and a pressure plate, and a driven portion consisting of a friction disk disposed between the flywheel and the pressure plate and a splined hub to which the friction disk is secured and meshed in spline with the input shaft of a transmission wherein the friction disk is formed in such a manner that it has a predetermined angle with a bend formed at its plate with respect to the flywheel.
Inventors
- 👤 Toichi Hashizume
- 👤 Isao Nagai
- 👤 Katsuhiko Umeda
- 👤 Tadaaki Otokuni
- 👤 Yuji Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:09
CPC Classifications
F; F16; F16D; F16D13/00; F16D13/58; F16D13/60; F16D13/64; F16D2013/642
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
129 words
In combination: a rotatably mounted flywheel mounted for rotation about a longitudinal axis; a pressure plate spaced apart from said flywheel along said longitudinal axis and movable along said axis; a rotatably mounted shaft concentric with said flywheel and pressure plate; a hub splined to said shaft and having an annular tapered peripheral edge portion; a flexible clutch disc having friction facings on both sides thereof; and means connecting said flexible clutch disc at its center portion directly on said edge portion at an angle thereto, said clutch disc having a normal dished configuration and being concave toward said pressure plate when in a state of rest and flexed into a flat condition when gripped between said flywheel and pressure plate to releasably engage said flywheel with said shaft.
Claim 2
Dependent Claim
129 words
In combination: a rotatably mounted flywheel mounted for rotation about a longitudinal axis; a pressure plate spaced apart from said flywheel along said longitudinal axis and movable along said axis; a rotatably mounted shaft concentric with said flywheel and pressure plate; a hub splined to said shaft and having an annular tapered peripheral edge portion; a flexible clutch disc having friction facings on both sides thereof; and means connecting said flexible clutch disc at its center portion directly on said edge portion at an angle thereto, said clutch disc having a normal dished configuration and being concave toward said pressure plate when in a state of rest and flexed into a flat condition when gripped between said flywheel and pressure plate to releasably engage said flywheel with said shaft.
Claim 3
Dependent Claim
142 words
In combination: a rotatably mounted flywheel mounted for rotation about a longitudinal axis; a pressure plate spaced apart from said flywheel along said longitudinal axis and movable along said axis; a rotatably mounted shaft concentric with said flywheel and pressure plate; a hub splined to said shaft; an annular disc connected to said hub, said annular disc having an annular tapered outer peripheral edge portion; a flexible clutch disc having friction facings on both sides thereof; and means connecting said flexible clutch disc at its center portion to said annular tapered outer peripheral edge portion at an angle thereto, said clutch disc having a normal dished configuration and being concave toward said pressure plate when in a state of rest and flexed into a flat condition when gripped between said flywheel and pressure plate to releasably engage said flywheel with said shaft.
Claim 4
Dependent Claim
142 words
In combination: a rotatably mounted flywheel mounted for rotation about a longitudinal axis; a pressure plate spaced apart from said flywheel along said longitudinal axis and movable along said axis; a rotatably mounted shaft concentric with said flywheel and pressure plate; a hub splined to said shaft; an annular disc connected to said hub, said annular disc having an annular tapered outer peripheral edge portion; a flexible clutch disc having friction facings on both sides thereof; and means connecting said flexible clutch disc at its center portion to said annular tapered outer peripheral edge portion at an angle thereto, said clutch disc having a normal dished configuration and being concave toward said pressure plate when in a state of rest and flexed into a flat condition when gripped between said flywheel and pressure plate to releasably engage said flywheel with said shaft.
Claim 5
Dependent Claim
213 words
A quick-release friction clutch assembly comprising: a rotationally driven input member rotatable about a longitudinal axis; a rotatably mounted output member spaced apart from said input member along said longitudinal axis; a friction clutch assembly operable to selectively engage and disengage said output member with said input member comprising a hub splined to said output member, a flexible annular plate having a normal planar configuration and opposed planar sides, connecting means connecting said flexible annular plate to said hub at an angle thereto whereby said flexible plate extends obliquely away from said input member, said connecting means comprising a tapered surface portion peripherally extending around said hub and means attaching said flexible annular plate to said tapered surface portion, and a friction lining attached to each of said planar sides; and means including a friction surface movable towards said input member into frictional engagement with one of said friction linings to effect flexure of said flexible annular plate out of said normal planar configuration followed by frictional engagement of the other of said friction linings with said input member and movable away from said input member to effect positive disengagement of said other friction lining from said input member due to flexure of said flexible annular plate back to its normal planar configuration.
Claim 6
Dependent Claim
213 words
A quick-release friction clutch assembly comprising: a rotationally driven input member rotatable about a longitudinal axis; a rotatably mounted output member spaced apart from said input member along said longitudinal axis; a friction clutch assembly operable to selectively engage and disengage said output member with said input member comprising a hub splined to said output member, a flexible annular plate having a normal planar configuration and opposed planar sides, connecting means connecting said flexible annular plate to said hub at an angle thereto whereby said flexible plate extends obliquely away from said input member, said connecting means comprising a tapered surface portion peripherally extending around said hub and means attaching said flexible annular plate to said tapered surface portion, and a friction lining attached to each of said planar sides; and means including a friction surface movable towards said input member into frictional engagement with one of said friction linings to effect flexure of said flexible annular plate out of said normal planar configuration followed by frictional engagement of the other of said friction linings with said input member and movable away from said input member to effect positive disengagement of said other friction lining from said input member due to flexure of said flexible annular plate back to its normal planar configuration.
Claim 7
Dependent Claim
227 words
A quick-releasing friction clutch assembly comprising: a rotatationally driven input member rotatable about a longitudinal axis; a rotatably mounted output member spaced apart from said input member along said longitudinal axis; a friction clutch assembly operable to selectively engage and disengage said output member with said input member comprising a hub splined to said output member, a flexible annular plate having a normal planar configuration and opposed planar sides, connecting means connecting said flexible annular plate to said hub at an angle thereto whereby said flexible plate extends obliquely away from said input member, said connecting means comprising an intermediate annular plate connected to a peripheral portion of said hub, said intermediate annular plate having a tapered outer peripheral portion, and means attaching said flexible annular plate to said tapered outer peripheral portion, and a friction lining attached to each of said planar sides; and means including a friction surface movable towards said input member into frictional engagement with one of said friction linings to effect flexure of said flexible annular plate out of said normal planar configuration followed by frictional engagement of the other of said friction linings with said input member and movable away from said input member to effect positive disengagement of said other friction lining from said input member due to flexure of said flexible annular plate back to its normal planar configuration.
Claim 8
Dependent Claim
227 words
A quick-releasing friction clutch assembly comprising: a rotatationally driven input member rotatable about a longitudinal axis; a rotatably mounted output member spaced apart from said input member along said longitudinal axis; a friction clutch assembly operable to selectively engage and disengage said output member with said input member comprising a hub splined to said output member, a flexible annular plate having a normal planar configuration and opposed planar sides, connecting means connecting said flexible annular plate to said hub at an angle thereto whereby said flexible plate extends obliquely away from said input member, said connecting means comprising an intermediate annular plate connected to a peripheral portion of said hub, said intermediate annular plate having a tapered outer peripheral portion, and means attaching said flexible annular plate to said tapered outer peripheral portion, and a friction lining attached to each of said planar sides; and means including a friction surface movable towards said input member into frictional engagement with one of said friction linings to effect flexure of said flexible annular plate out of said normal planar configuration followed by frictional engagement of the other of said friction linings with said input member and movable away from said input member to effect positive disengagement of said other friction lining from said input member due to flexure of said flexible annular plate back to its normal planar configuration.
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) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |