US3834501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual spring device for preventing improper disengagement of clutch
Assignee: Exedy Corp
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Filing: 1972-10-24
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Granted: 1974-09-10
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Expires: 1992-10-24
Abstract
Abstract A device comprising a clutch disc having clutch facings between a flywheel and a pressure plate, a main drive shaft splined to a spline hub of the clutch disc for conjoint rotation therewith, a pilot bearing for supporting an end of the main drive shaft rotatably on the flywheel, a spring member interposed between the splined hub and a portion of the pilot bearing to be rotated conjointly with the main drive shaft for moving the clutch disc to a neutral position upon disengagement of the clutch, and means for determining the neutral position.
Inventors
- 👤 K Adachi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:50
CPC Classifications
F; F16; F16D; F16D13/00; F16D13/22; F16D13/38; F16D13/46; F16D13/48; F16D13/50; F16D13/505
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
238 words
A device for preventing improper disengagement of a clutch comprising: a clutch disc having clutch facings disposed between a flywheel and a pressure plate; a main drive shaft being fitted in a spline hub of said clutch disc through spline engagement so as to support said clutch disc for axial movement; a pilot bearing for rotatably supporting an end of said main drive shaft on said flywheel; spring means interposed between an inner ring of said pilot bearing and said spline hub to accumulate therein a resilient force when the clutch is in an engaged state, said spring means being operable to forcibly push said clutch disc to a neutral position upon a clutch disengaging operation, the pushing force of said spring means being determined so as to be reduced to zero when said clutch disc reaches the neutral position; and said spring means comprising a first coil spring interposed between one end face of said spline hub and said inner ring of said pilot bearing and exerting a resilient force therebetween and a second coil spring interposed between the other end face of said spline hub and a stop ring disposed on said main drive shaft and exerting a resilient force therebetween in counteracting relation to said first coil spring so as to determine the neutral position of said clutch at a position where the active force of said first and second coil springs are in balance.
Claim 2
Independent Claim
238 words
A device for preventing improper disengagement of a clutch comprising: a clutch disc having clutch facings disposed between a flywheel and a pressure plate; a main drive shaft being fitted in a spline hub of said clutch disc through spline engagement so as to support said clutch disc for axial movement; a pilot bearing for rotatably supporting an end of said main drive shaft on said flywheel; spring means interposed between an inner ring of said pilot bearing and said spline hub to accumulate therein a resilient force when the clutch is in an engaged state, said spring means being operable to forcibly push said clutch disc to a neutral position upon a clutch disengaging operation, the pushing force of said spring means being determined so as to be reduced to zero when said clutch disc reaches the neutral position; and said spring means comprising a first coil spring interposed between one end face of said spline hub and said inner ring of said pilot bearing and exerting a resilient force therebetween and a second coil spring interposed between the other end face of said spline hub and a stop ring disposed on said main drive shaft and exerting a resilient force therebetween in counteracting relation to said first coil spring so as to determine the neutral position of said clutch at a position where the active force of said first and second coil springs are in balance.
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) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |