Hydraulic motor having free-wheeling and locking modes of operat

Details Hydraulic motor having free-wheeling and locking modes of operat Hydraulic motor having free-wheeling and locking modes of operat

1985-02-01

1986-09-23

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Plural working members or chambers

418 69, 180242, 192 4A, 254345, F03C 208, F04C 210, B60K 17356, F16D 4100

Patent

active

046132929

ABSTRACT:
A rotary fluid pressure device is provided of the type in which a valve spool (47) is axially movable within a spool bore (35). In the normal operating position of the valve spool (47), torque output is transmitted from the gerotor gear set (17) by means of a main drive shaft 53 through one spline connection (51, 49) then through a second spline connection (49, 75) to the output device. The valve spool (47) may be moved axially to a position in which the second spline connection (49, 54) is disengaged, and the device operates in a free-wheel mode. The valve spool (47) may also be moved axially to a position in which a set of teeth (71) on the valve spool engage a set of teeth (69) on the stationary housing, such that the device operates in a locked mode.

REFERENCES:
patent: 2821171 (1958-01-01), Charlson
patent: 3532447 (1970-10-01), Charlson
patent: 3853435 (1974-12-01), Ogasahara et al.
patent: 4435130 (1984-03-01), Ohrberg et al.
patent: 4451217 (1984-05-01), White
patent: 4493404 (1985-01-01), Wenker
patent: 4494915 (1985-01-01), White, Jr.
New Dimensions in Ball Bearings, 1982, New Departure Hyatt Bearings, Sandusky, Ohio.

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