Power plants – Pressure fluid source and motor – Having condition responsive control in a system of distinct...
Patent
1987-09-28
1989-10-24
Garrett, Robert E.
Power plants
Pressure fluid source and motor
Having condition responsive control in a system of distinct...
60427, 91522, 91529, 91531, 414699, 414730, F15B 1309, F15B 1306, E02F 332
Patent
active
048753378
ABSTRACT:
A hydraulic circuit for a construction machine which operates an actuator for working machine simultaneously with an actuator for working element without degrading the operation of the actuator for working machine. The hydraulic circuit comprises a first hydraulic pump, a first directional control valve connected to the first hydraulic pump and controlling an operation of the working machine actuator, a third directional control valve controlling an operation of the working element actuator, a second directional control valve connected to a second hydraulic pump, a first pilot operating device for controlling an operation of the first directional control valve and a second pilot operating device for controlling an operation of the third directional control valve. The hydraulic circuit further comprises a first hydraulic fluid joining device for providing hydraulic fluid of the second hydraulic pump to the input side of third directional control valve, a second hydraulic fluid joining device for supplying the hydraulic fluid of the second hydraulic pump to the input side of the first directional control valve, and a priority switching device for preventing, in response to a signal of the first pilot operating device, the signal of the second pilot operating device from being applied to the second directional control valve.
REFERENCES:
patent: 3800669 (1974-04-01), Distler
patent: 3838573 (1974-10-01), Laumond
patent: 4030623 (1977-06-01), Bridwell et al.
patent: 4078681 (1978-03-01), Field
patent: 4210061 (1980-07-01), Bianchetta
patent: 4528892 (1985-07-01), Okabe et al.
patent: 4561341 (1985-12-01), Aikawa
patent: 4561824 (1985-12-01), Okabe et al.
Hirata Toichi
Satoh Shin-ichi
Sugiyama Genroku
Garrett Robert E.
Hitachi Construction Machinery Co. Ltd.
Kapsalas George
LandOfFree
Construction machine dual-dump hydraulic circuit with piloted ar does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Construction machine dual-dump hydraulic circuit with piloted ar, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Construction machine dual-dump hydraulic circuit with piloted ar will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1581889