US3763976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clutch controlled transmission shift lock
Assignee: Case LLC
•
Filing: 1972-01-27
•
Granted: 1973-10-09
•
Expires: 1992-01-27
Abstract
Abstract An assembly having a dual hydraulic clutch, a master clutch and a coordination means linked therebetween. The coordination means preventing engagement of the hydraulic clutch until the master clutch is disengaged and includes a clutch pedal actuated gate means which alternately bars or allows movement of the hydraulic spool that directs high pressure fluid to the hydraulic clutch. A manual operable lever means is employed to effect movement in the spool.
Inventors
- 👤 J Prokop
- 👤 I Eickmeyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:56
CPC Classifications
F; F16; F16D; F16D21/00; F16D21/02; F16D21/06; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20012; Y10T74/20018; Y10T74/20085
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
180 words
A combination manual and hydraulic clutch assembly comprising: a dual hydraulic clutch; a master clutch being periodically engaged; a coordination means linked between dual hydraulic clutch and said master clutch including: a bellcrank lever clutch means having an input lever means and an output lever means; a gate means, having first and second end means, pivotally secured to a shaft means whereby said gate means can pivot in a plane perpendicular to said shaft; a link means connecting said output lever and said first end; a bellcrank lever spool actuating means having an input lever and an output lever said input lever being fixed to a gear selector means, said output lever having a gap means whereby upon actuation of said gear selector means said bellcrank lever spool actuating means pivots in a plane perpendicular to that of said gate means intersecting it, and a spool linking means having a projection means slidingly received in said gap whereby upon movement of said second end said output lever can pass thereby to cause fluid to be directed to said hydraulic clutch.
Claim 2
Dependent Claim
180 words
A combination manual and hydraulic clutch assembly comprising: a dual hydraulic clutch; a master clutch being periodically engaged; a coordination means linked between dual hydraulic clutch and said master clutch including: a bellcrank lever clutch means having an input lever means and an output lever means; a gate means, having first and second end means, pivotally secured to a shaft means whereby said gate means can pivot in a plane perpendicular to said shaft; a link means connecting said output lever and said first end; a bellcrank lever spool actuating means having an input lever and an output lever said input lever being fixed to a gear selector means, said output lever having a gap means whereby upon actuation of said gear selector means said bellcrank lever spool actuating means pivots in a plane perpendicular to that of said gate means intersecting it, and a spool linking means having a projection means slidingly received in said gap whereby upon movement of said second end said output lever can pass thereby to cause fluid to be directed to said hydraulic clutch.
Claim 3
Dependent Claim
107 words
A combination manual and hydraulic clutch assembly comprising: dual hydraulic clutch means including a live pump means, a hydraulic valve having a control spool means, and means for actuating said control spool, master clutch means being periodically engaged including: clutch pedal means, and a multi-paddle driving means, coordination means linked between said dual hydraulic clutch and said master clutch, whereby said master clutch must be disengaged before said hydraulic clutch can be shifted including: a gate means, a link means connecting said clutch pedal means to said gate means, a spool actuating means whereby said spool actuating means is operable only when said master clutch is disengaged.
Claim 4
Dependent Claim
107 words
A combination manual and hydraulic clutch assembly comprising: dual hydraulic clutch means including a live pump means, a hydraulic valve having a control spool means, and means for actuating said control spool, master clutch means being periodically engaged including: clutch pedal means, and a multi-paddle driving means, coordination means linked between said dual hydraulic clutch and said master clutch, whereby said master clutch must be disengaged before said hydraulic clutch can be shifted including: a gate means, a link means connecting said clutch pedal means to said gate means, a spool actuating means whereby said spool actuating means is operable only when said master clutch is disengaged.
Claim 5
Dependent Claim
132 words
A combination manual and hydraulic clutch assembly comprising: dual hydraulic clutch including two hydraulic piston means interconnected whereby engagement of one causes disengagement of the other; a fluid energy producing means; and valving means connecting said piston means and said fluid producing means; master clutch being periodically engaged; coordination means linked between said dual hydraulic clutch and said master clutch including a gate means operating in a first plane, a link means and a lever means which disengages said master clutch and actuates said link through said gate; a spool actuating means operating in a second plane perpendicular to said first whereby causing the direction of high pressure fluid to said dual hydraulic clutch; a spool linking means whereby said master clutch must be disengaged before said hydraulic clutch can be shifted.
Claim 6
Dependent Claim
132 words
A combination manual and hydraulic clutch assembly comprising: dual hydraulic clutch including two hydraulic piston means interconnected whereby engagement of one causes disengagement of the other; a fluid energy producing means; and valving means connecting said piston means and said fluid producing means; master clutch being periodically engaged; coordination means linked between said dual hydraulic clutch and said master clutch including a gate means operating in a first plane, a link means and a lever means which disengages said master clutch and actuates said link through said gate; a spool actuating means operating in a second plane perpendicular to said first whereby causing the direction of high pressure fluid to said dual hydraulic clutch; a spool linking means whereby said master clutch must be disengaged before said hydraulic clutch can be shifted.
Claim 7
Dependent Claim
133 words
A combination manual and hydraulic clutch assembly comprising: dual hydraulic clutch including two hydraulic piston means interconnected whereby engagement of one causes disengagement of the other; a fluid energy producing means; and valving means connecting said piston means and said fluid producing means; master clutch being periodically engaged; coordination means linked between said dual hydraulic clutch and said master clutch including a gate means operating in a first plane, a link means and a clutch pedal means which disengages said master clutch and actuates said link through said gate; a spool actuating means operating in a second plane perpendicular to said first whereby causing the direction of high pressure fluid to said dual hydraulic clutch; a spool linking means whereby said master clutch must be disengaged before said hydraulic clutch can be shifted.
Claim 8
Dependent Claim
133 words
A combination manual and hydraulic clutch assembly comprising: dual hydraulic clutch including two hydraulic piston means interconnected whereby engagement of one causes disengagement of the other; a fluid energy producing means; and valving means connecting said piston means and said fluid producing means; master clutch being periodically engaged; coordination means linked between said dual hydraulic clutch and said master clutch including a gate means operating in a first plane, a link means and a clutch pedal means which disengages said master clutch and actuates said link through said gate; a spool actuating means operating in a second plane perpendicular to said first whereby causing the direction of high pressure fluid to said dual hydraulic clutch; a spool linking means whereby said master clutch must be disengaged before said hydraulic clutch can be shifted.
Claim 9
Dependent Claim
19 words
The clutch assembly of claim 4 wherein said master clutch includes multi-paddles driving means having at least four paddles.
Claim 10
Dependent Claim
57 words
The shift assembly of claim 4 wherein: said gate means is a flat plate centrally pivotable; and said spool actuating means is a bellcrank lever having an input lever means and an output lever means, said output lever means being slidingly secured to said spool linking means, said input lever being secured to a gear selector means.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |