Pressure limiting acceleration control system and valve for hydr

Details Pressure limiting acceleration control system and valve for hydr Pressure limiting acceleration control system and valve for hydr

1986-05-02

1987-09-22

Ostrager, Allen M.

Power plants

Pressure fluid source and motor

Condition responsive control of motive fluid flow

60494, 91 35, 91433, 91452, 13750513, F16D 3102, F16K 3112

Patent

active

046946497

ABSTRACT:
A control system for operating positive displacement hydraulic motors to minimize pressure peaks and stresses associated therewith upon starting the motor at full fluid flow includes a self-closing pilot operated valve which, upon initiation of fluid flow to the motor bypasses a majority of the flow to a return line circuit and progressively closes to force pressure fluid to accelerate the motor to a preselected operating speed. The self-closing valve includes a spool type closure member which is pilot actuated through a timing orifice to commence closing upon initiation of fluid flow therethrough from the pump discharge or supply line. The closure member is spring biased in the open position and automatically resets itself to the open position upon shutdown of the motor operating valve.

REFERENCES:
patent: 1942426 (1934-01-01), Hunter et al.
patent: 3118466 (1964-01-01), Bagwell
patent: 3559677 (1971-02-01), Barosko
patent: 3791413 (1974-02-01), Muller et al.
patent: 3890788 (1975-06-01), Habiger
patent: 4002027 (1977-01-01), Eley et al.
patent: 4245816 (1981-01-01), Johnson
patent: 4362018 (1982-12-01), Torii
patent: 4417502 (1983-11-01), Shore
patent: 4466336 (1984-08-01), Broome et al.

Affiliated with

Also associated with

Rating

Pressure limiting acceleration control system and valve for hydr does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pressure limiting acceleration control system and valve for hydr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pressure limiting acceleration control system and valve for hydr will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2051479