Valve assembly in a hydraulic control for a ratio controller in a power transmission

U.S. Patent Number: 5829560

Abstract: A hydraulic control has a valve body assembly in which a plurality of control valves are contained. The valve body has separate structures which are secured together by fasteners. Separator plates are positioned between the structure levels to establish flow passages and sealing elements between fluid passages in the separate structures. The separator plate has two conical valve seats formed therein which cooperate with two pintle valves to control the flow of hydraulic fluid to and from a ratio controller within a power transmissions.

Inventors: Mainquist; James Kevin (Troy, MI), Myers; Tracey Lynn (Detroit, MI), Blenc; David Allen (Shelby Township, Macomb County, MI)

Assignee: General Motors Corporation (Detroit, MI)

Application Number: 08/856,832

Issued: 1998-11-03

Expired: 2006-11-03

Classes: 192/3.57 ; 137/540; 192/109F; 74/606R

Field of search: 137/540 192/19F,3.51,3.57 74/66R 475/128

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