US3773157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clutch with coolant cut-off valve
Assignee: Caterpillar Inc
•
Filing: 1971-12-13
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Granted: 1973-11-20
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Expires: 1991-12-13
Abstract
Abstract A wet clutch comprising rotatable input means and rotatable output means with friction means engageable to establish a connection between the input and output means and circulating fluid to cool the friction means is provided with means to divert the fluid from the friction means during disengagement thereof to eliminate viscous drag therein.
Inventors
- 👤 F Koch
- 👤 D Lull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:03
CPC Classifications
F; F16; F16D; F16D13/00; F16D13/58; F16D13/72; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/8667; Y10T137/86694
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
183 words
An oil cooled clutch system, said system comprising: rotatable input means and rotatable output means coaxially disposed and defining an annular chamber; said output means comprising a rotatable shaft extending from said chamber and friction elements disposed in said chamber and operative to inter-engage with friction means connected with said input means to establish a connection between said input means and said output means; means including a sleeve mounted for axial and rotational movement on said rotatable shaft to disengage said friction means to thereby disconnect said output means from said input means; housing means mounted on said sleeve for axial movement therewith and rotational movement with respect thereto; and means including a pump mounted in said housing and operatively driven by said input means to provide a continuous supply of oil to said friction means during engagement thereof and diverter valve means to completely interrupt said supply during disengagement of said friction means, and means to move and close said diverter valve comprising a control rod connected to and extending from said valve and engaging axially fixed structure adjacent the clutch system.
Claim 2
Dependent Claim
183 words
An oil cooled clutch system, said system comprising: rotatable input means and rotatable output means coaxially disposed and defining an annular chamber; said output means comprising a rotatable shaft extending from said chamber and friction elements disposed in said chamber and operative to inter-engage with friction means connected with said input means to establish a connection between said input means and said output means; means including a sleeve mounted for axial and rotational movement on said rotatable shaft to disengage said friction means to thereby disconnect said output means from said input means; housing means mounted on said sleeve for axial movement therewith and rotational movement with respect thereto; and means including a pump mounted in said housing and operatively driven by said input means to provide a continuous supply of oil to said friction means during engagement thereof and diverter valve means to completely interrupt said supply during disengagement of said friction means, and means to move and close said diverter valve comprising a control rod connected to and extending from said valve and engaging axially fixed structure adjacent the clutch system.
References Cited (Backward Citations)
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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) | 1976-11-19 | 1977-05-21 | 1977-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-19 | 1981-05-21 | 1981-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-19 | 1985-05-21 | 1985-11-20 | $7700.00 | Window Closed / Lapsed |