Terry Eugene Hilt

US Patent:

42193133, Aug 26, 1980

Filed:

Jul 28, 1978

Appl. No.:

5/928738

Inventors:

Laurence L. Miller - West Lafayette IN
Terry E. Hilt - Lafayette IN

Assignee:

TRW Inc. - Cleveland OH

International Classification:

F03C 300
F04C 102
F04C 1502
F16K 3700

US Classification:

418 2

Abstract:

An assembly of plate members for forming a commutator valve for hydraulic devices of the expanding-contracting pocket type, such as hydraulic motors. The assembly includes a first end plate, a second end plate and a plurality of intermediate plates therebetween. The first end plate includes first and second arrays of fluid passageways for communicating with expanding and contracting fluid pockets, respectively, during operation of the motor. The intermediate plates may be assembled together in either a first or a second alignment depending upon the desired direction of rotation of the hydraulic motor. The intermediate plates are designed such that in the first alignment they direct high pressure fluid from a high pressure port to the first array of passageways and low pressure fluid from the second array of passageways to a low pressure port. The output shaft of the hydraulic motor thus rotates in one direction. In the second alignment the intermediate plates direct high pressure fluid from the high pressure port to the second array of passageways and low pressure fluid from the first array of passageways to the low pressure port.