Power plants – Pressure fluid source and motor – Condition responsive control of motive fluid flow
Patent
1991-01-09
1992-04-07
Look, Edward K.
Power plants
Pressure fluid source and motor
Condition responsive control of motive fluid flow
60464, 60466, 91433, 180244, F16D 3102
Patent
active
051016303
ABSTRACT:
The invention relates to a braking valve arrangement for a hydrostatic drive operated in open circuit, in particular for vehicle drives, wherein a hydraulic pressure medium is supplied to the hydraulic motor from the hydraulic pump via a reversing directional control valve as desired through one of two branches each containing a pressure limiting valve and a braking control valve, and the pressure medium is discharged to the tank through the respective other of the two branches. The braking control valve controls the flow of hydraulic medium through the respective branch depending on the pressure in the respective other branch and has parallel with it a non-return valve opening into the hydraulic motor. To reduce the outlay in the valve and lines a valve unit is provided in each branch of which the valve body is formed as a closure body of the non-return valve, urged in the closing direction by a spring, as a control piston of the braking control valve and as the housing for the closure element of the pressure limiting valve, wherein the valve body is urged controllably towards the closure position depending on the pressure in the respective other branch, and thus acts as a control piston in cooperation with a valve seat to effect controlled throttling of the flow of pressure medium from the control chamber to the tank.
REFERENCES:
patent: 3125324 (1964-03-01), Vivier
patent: 3672167 (1972-06-01), Griesenbrock
patent: 3996840 (1976-12-01), Futamata et al.
patent: 4083381 (1978-04-01), McClocklin et al.
patent: 4145957 (1979-03-01), McClocklin
patent: 4407122 (1983-10-01), Nanda
patent: 4611527 (1986-09-01), Breeden
Hydromatik GmbH
Look Edward K.
Nguyen Hoang
LandOfFree
Braking valve arrangement for a hydrostatic drive does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Braking valve arrangement for a hydrostatic drive, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Braking valve arrangement for a hydrostatic drive will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1887080