Hydraulic control apparatus

Details Hydraulic control apparatus Hydraulic control apparatus

1988-02-16

1989-03-14

Look, Edward K.

Motors: expansible chamber type

Constantly applied motive fluid with controlled venting

91443, 91444, 91454, 91459, F15B 1302

Patent

active

048116491

ABSTRACT:
In hydraulic control devices comprising a two-way flow regulator in a resoir return passage, in which the flow regulator comprises a metering restriction and a pressure equalizer including a control piston with the piston ends disposed in control chambers and subjected to the action of control pressures, the actuation of a single-acting hydraulic motor under load often results in an unavoidable switching shock, because the displacement of the control piston involves the consumption of a certain volume of the pressure fluid. In order to eliminate the switching shock with a simple construction, the end of the control piston subjected to the action of the load pressure is formed as a closure element cooperating with a valve seat in the manner of a poppet valve for holding the load pressure.

REFERENCES:
patent: 2272684 (1942-02-01), Vickers
patent: 3125319 (1964-03-01), Arbogast et al.
patent: 3561327 (1971-02-01), Stremple
patent: 4279268 (1981-07-01), Aubert
patent: 4409887 (1983-10-01), Shingu et al.
patent: 4727791 (1988-03-01), Satoh

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-887832