Hydraulic controller

Details Hydraulic controller Hydraulic controller

1989-04-20

1990-09-25

Michalsky, Gerald A.

Motors: expansible chamber type

With motive fluid valve

Relatively movable serial valves

91461, 13759615, F15B 13042

Patent

active

049585533

ABSTRACT:
A spool type directional control valve switches flow of oil discharged from an oil hydraulic pump to a hydraulic actuator, and decreases internal leak of a cylinder. Two sets of separated cylinder passages are formed on a valve body provided with a main spool, and a nonleak valve is provided across them. The nonleak valve is equipped with a main passage switching puppet having a throttle on the nose, a spring for energizing it to a close side, a pilot poppet for controlling pressure of a spring chamber in which the spring is enclosed, and a piston for operating the poppet.

REFERENCES:
patent: 4290447 (1981-09-01), Knutson
patent: 4569273 (1986-02-01), Anderson et al.

Affiliated with

Also associated with

Rating

Hydraulic controller does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hydraulic controller, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic controller will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-323721