Automatic hydraulic speed control

Details Automatic hydraulic speed control Automatic hydraulic speed control

1985-04-24

1986-05-06

Jordan, Charles T.

Power plants

Pressure fluid source and motor

Having condition responsive control in a system of distinct...

60427, 60433, 60911, F15B 1102

Patent

active

045863318

ABSTRACT:
A microprocessor (158) based control for a hydraulic pump motor (26) used to control the operation of a mast assembly (12) on a work vehicle (10). The speed of each function performed by the mast assembly (12) is programmable to one of a plurality of possible speeds. An additional function for performing lifting of the mast (12) produces incremental speed variations relative to incremental movement of a corresponding control lever (14). Each of the functions have a predetermined priority such that attempted operation of multiple functions results in a pump motor speed requested by the function of highest priority.

REFERENCES:
patent: 3614567 (1971-10-01), Payne et al.
patent: 3968414 (1976-07-01), Konrad
patent: 4102132 (1978-07-01), Palmer
patent: 4120233 (1978-10-01), Heiser et al.
patent: 4369625 (1983-01-01), Izumi et al.
patent: 4386301 (1983-05-01), Neki et al.

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