Hydraulic drive circuit system

Details Hydraulic drive circuit system Hydraulic drive circuit system

1988-03-09

1989-07-11

Smith, Leonard E.

Motors: expansible chamber type

Three or more cylinders arranged in parallel radial or...

Cylinders parallel to rotation axis

60444, 60494, 417216, F04D 4900

Patent

active

048460460

ABSTRACT:
A hydraulic drive circuit system is equipped with an accelerator pedal and an accelerator lever for respectively instructing target revolution numbers for an engine, a link plate for selecting greater one of the instruction values, and a linkage and a switch for controlling valves respectively so as to close the flow passage of a line interposed between a charge pump and a low pressure line irrespective of the instruction value of the accelerator pedal when the accelerator lever has not been controlled but for controlling the valves so as to restrict the flow passage of the line in accordance with the instruction value of the accelerator pedal when the accelerator lever has been controlled.

REFERENCES:
patent: 3153900 (1964-10-01), Pigeroulet
patent: 3214911 (1965-11-01), Kempson
patent: 3986358 (1976-10-01), Hoffmann
patent: 4080850 (1978-03-01), Bubula et al.
patent: 4193323 (1980-03-01), Bubula et al.
patent: 4203293 (1980-05-01), Bubula et al.
patent: 4400935 (1983-08-01), Louis
patent: 4400939 (1983-08-01), Moranduzzo et al.
patent: 4461147 (1984-07-01), Myers
patent: 4510750 (1985-04-01), Izumi et al.
patent: 4637781 (1987-01-01), Akiyama et al.
patent: 4745746 (1988-05-01), Geringer

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