Hydraulic circuit with a switchover valve for switching between

Details Hydraulic circuit with a switchover valve for switching between Hydraulic circuit with a switchover valve for switching between

1990-03-16

1992-08-11

Look, Edward K.

Power plants

Pressure fluid source and motor

Condition responsive control of motive fluid flow

60494, F16D 3102

Patent

active

051368463

ABSTRACT:
A hydraulic circuit, for use with i.e. a backhoe implement of a work vehicle. The circuit includes an engine, first through third pumps driven by the engine and a plurality of actuators. The invention is characterized by a relief pressure switchover device for selectively providing a first mode for realizing a low relief pressure in the first and second feed oil passages and a second mode for realizing a high relief pressure in the same and a relief pressure control device for causing the relief pressure switchover device to automatically provide the first mode when the third pump is loaded and causing the switchover device to automatically provide the second mode when the third pump is unloaded.

REFERENCES:
patent: 3716308 (1973-02-01), Kobald
patent: 3910044 (1975-10-01), Symmank
patent: 3916624 (1975-11-01), Machens et al.
patent: 3922855 (1975-12-01), Bridwell
patent: 4558629 (1985-12-01), Unger et al.
patent: 4768339 (1988-09-01), Aoyagi et al.
patent: 4961371 (1990-10-01), Takashima
patent: 4986075 (1991-01-01), Shimoie

Affiliated with

Also associated with

Rating

Hydraulic circuit with a switchover valve for switching between 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 circuit with a switchover valve for switching between , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic circuit with a switchover valve for switching between will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-339500