Power plants – Pressure fluid source and motor – Pulsator
Patent
1980-08-28
1982-08-17
Hershkovitz, Abraham
Power plants
Pressure fluid source and motor
Pulsator
91442, 91460, F15B 710
Patent
active
043442870
ABSTRACT:
A hydraulic circuit (32), for example, remotely controls a work element (14) and contains first apparatus (34), such as a master cylinder (42), which passes a fluid pressure signal through a fluid pathway (38, 40) in response to an input signal. Second apparatus (36), such as a slave cylinder (44), correspondingly delivers an output signal for controlling the work element (14). Temperature variation can cause fluid volume changes which disrupt synchronized operation of the master and slave cylinders (42, 44). Third apparatus (74) positions the fluid pathways (38, 40) in fluid communication with a tank (28) in the absence of the fluid signal. If the signal passes through one pathway (38, 40), that pathway (38, 40) is automatically blocked from communication with the tank (28). Thus, when the fluid signal is absent from the fluid pathways (38, 40), volume compensation occurs because of dilution of the fluid in the circuit (32) with the tank fluid. This substantially overcomes volumetric problems from fluid temperature changes.
REFERENCES:
patent: 2008760 (1935-07-01), Jaderblom
patent: 2368659 (1945-02-01), Heineck
patent: 2383180 (1945-08-01), Ellinwood
patent: 2417278 (1947-03-01), Van Der Werff
patent: 2468489 (1949-04-01), D'Arcey
patent: 2474681 (1949-06-01), Lane
patent: 2540879 (1951-02-01), Hebel
patent: 3272280 (1966-09-01), Schuetz
patent: 3304953 (1967-02-01), Wickline
patent: 3340897 (1967-09-01), Nevulis
patent: 3766944 (1973-10-01), Distler
patent: 3857404 (1974-12-01), Johnson
patent: 4030560 (1977-06-01), Parquet
patent: 4085920 (1978-04-01), Waudoit
Sperry Hydraulic-Sperry Controls, Inc.
Hydronic Remote Control System-Hydronic Corporation.
Caterpillar Tractor Co.
Heming William B.
Hershkovitz Abraham
LandOfFree
Volume compensation for hydraulic circuits does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Volume compensation for hydraulic circuits, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Volume compensation for hydraulic circuits will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-181431