Locking hydraulic actuator

Details Locking hydraulic actuator Locking hydraulic actuator

1993-10-01

1994-09-27

Denion, Thomas E.

Motors: expansible chamber type

With correlated control of motive fluid and locking means

Working member position control of motive fluid and locking...

91 45, 91 41, 91392, 92 1, 92 28, F15B 1526

Patent

active

053498941

ABSTRACT:
A method for locking a hydraulic actuator in a predetermined position and a locking hydraulic actuator are provided. The method includes the steps of supplying hydraulic fluid to a forward chamber in the hydraulic actuator, transferring the hydraulic fluid from the forward chamber into a forward moiety of the rearward chamber in the hydraulic actuator, and sealing the hydraulic fluid in the forward moiety of the rearward chamber to accomplish the locking function. Conversely, the actuator lock is released by the application of fluid supply pressure to the rearward variable chamber.

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patent: 5050484 (1991-09-01), Kamimura
patent: 5097748 (1992-03-01), Koch et al.

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