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US3773157A Expired / Lapsed US ⏱️ 0.0 years remaining

Clutch with coolant cut-off valve

Assignee: Caterpillar Inc
•
Filing: 1971-12-13
•
Granted: 1973-11-20
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Expires: 1991-12-13
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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)

US3104746A Cited
US3351169A Cited
US3314513A Cited
US3334717A Cited
US3547235A Cited
US3540557A Cited

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

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