Rotary expansible chamber devices – With signal – indicator or transparent inspection means
Patent
1978-07-28
1980-08-26
Vrablik, John J.
Rotary expansible chamber devices
With signal, indicator or transparent inspection means
418 39, 418 61B, 137270, F03C 300, F04C 102, F04C 1502, F16K 3700
Patent
active
042193133
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. The output shaft of the hydraulic motor thus rotates in the reverse direction. Certain plate members have indicia which identifies the direction in which the output shaft of the motor will rotate.
REFERENCES:
patent: 2797707 (1957-07-01), Hursh
patent: 2947320 (1960-08-01), Oxley et al.
patent: 3799201 (1974-03-01), Hansen et al.
patent: 3876343 (1975-04-01), Giversen
patent: 3901267 (1975-08-01), Moon, Jr.
patent: 4072450 (1978-02-01), Carlson
patent: 4087215 (1978-05-01), Miller
Hilt Terry E.
Miller Laurence L.
TRW Inc.
Vrablik John J.
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