Hydraulic device

Details Hydraulic device Hydraulic device

1991-02-19

1992-12-22

Look, Edward K.

Motors: expansible chamber type

Plural relatively movable or rigidly interconnected working...

Condition responsive means for modifying working member...

91517, 137116, 137118, F15B 1300

Patent

active

051726246

ABSTRACT:
A hydraulic device is furnished for an automatic connection of the pressure means source, either preferably to the primary user or to the secondary user depending on the pressure in the circuit of the primary user. A switching valve can be actuated by way of a precontrol pilot valve for the generation of the connections. An additional restoring second part compression spring (33) with adjustable pretension acts on the precontrol pilot valve (19, 20, 21, 22, 27). A fluid-loadable auxiliary piston (32) serves for a switching-pressure support. The hydraulic device is suitable for applications in hydraulic circuits exhibiting different transport priorities to different ports.

REFERENCES:
patent: 4105041 (1978-08-01), Axthammer
patent: 4199941 (1980-04-01), Farr
patent: 4332270 (1982-06-01), Budecker
patent: 4503876 (1985-03-01), Farr

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