Power plants – Pressure fluid source and motor – Having condition responsive control in a system of...
Patent
1991-03-15
1993-01-19
Look, Edward K.
Power plants
Pressure fluid source and motor
Having condition responsive control in a system of...
60445, 60475, 60486, 60414, F15B 1108, F15B 1309
Patent
active
051798360
ABSTRACT:
A first cylinder chamber of a hydraulic cylinder is connected to a pair of variable displacement pumps of which the first one is connected to a reservoir and second one is connected to the second cylinder chamber. This allows to bias the piston by a hydraulic force acting on either side of the piston corresponding to the direction of motion. This is obtained by adjusting the delivery volume of both the pumps such that the volume supplied is larger than the volume drained. Metering the difference of both the delivery volumes results in the desired biasing counter-pressure.
REFERENCES:
patent: 1972560 (1934-09-01), Heller
patent: 3864911 (1975-02-01), Gellatly et al.
patent: 4342164 (1982-08-01), Claassen
patent: 4707988 (1987-11-01), Palmers
patent: 4928487 (1990-05-01), Nikolaus
patent: 4961316 (1990-10-01), Corke et al.
Japanese Abstract appl. No. 57-196814 dated Nov. 11, 1982.
Japanese Abstract appl. No. 57-196815 dated Nov. 11, 1982.
Japanese Abstract appl. No. 57-195309 dated Sep. 11, 1982.
Hydraulics & Pneumatics article pp. 69-70 dated May 1975.
Look Edward K.
Mannesmann Rexroth GmbH
Ryznic John
LandOfFree
Hydraulic system for a differential piston type cylinder 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 system for a differential piston type cylinder, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic system for a differential piston type cylinder will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-97307