Title: Hydraulic coupling fluid clutches

Abstract: A valve-controlled hydraulic coupling fluid clutch is provided with a reservoir compartment containing first and second chambers, the first chamber receiving liquid from the working chamber during normal operation, while the second chamber receives such liquid only while the turbine is stalled or slowed excessively. Liquid flow means are provided between the two chambers of less capacity than means feeding liquid into the second chamber. Operator controlled valve means between the first reservoir chamber and the coupling working chamber are normally open and upon closing retain liquid in the first reservoir compartment to declutch the coupling, while automatic declutching takes place upon the slowing or stalling of the turbine to prevent overload by removal of working liquid from the working chamber into the second compartment.

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Inventors: Becker, John Edward (Bowmanville, CA, US)

Application Number: 498672
Filing Date: 1974-08-19
Publication_date: 1976-01-27
Assignee: Cluaran Associates Ltd. (Oshawa, CA)
Primary Class(es): 192/3.23 60/357, 60/359
Other Classes:
US Patent Ref:

2707376	May, 1955	Anderson	60/359.
2878642	Mar, 1959	Maurice et al.	60/359.
3751923	Aug, 1973	Becker	60/359.

Other Refs:
Primary Examiner: Geoghegan, Edgar W.
Assistant Examiner:
Attorney: Hirons & Rogers