Valve means for use in controlling operation of a hydraulic moto

Details Valve means for use in controlling operation of a hydraulic moto Valve means for use in controlling operation of a hydraulic moto

1977-07-25

1979-11-27

Michalsky, Gerald A.

Rotary kinetic fluid motors or pumps

Working fluid bypass

Selectively adjustable vane or working fluid control for bypass

30381, 184 15R, 13762512, 137882, F15B 1304

Patent

active

041759095

ABSTRACT:
The control valve mechanism of, for example a hydraulic motor for a chain saw, includes a two-position spool having a hollow interior permanently connected to reservoir and a cylindrical wall formed with ports which are closed in one valve position and open in the other valve position. During movement of the spool into the motor-operating position, a lubricant passageway is opened before the motor is fully operational.

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