Combination shuttle and high-pressure relief valve

Details Combination shuttle and high-pressure relief valve Combination shuttle and high-pressure relief valve

1977-05-20

1979-02-27

Geoghegan, Edgar W.

Power plants

Pressure fluid source and motor

With means purging, cleaning or separating undesirables from...

60461, 60464, 60476, 417304, F15B 2104

Patent

active

041412168

ABSTRACT:
A combination shuttle and high pressure relief valve is provided within a hydrostatic drive or transmission system. The valve is constructed with a spool member in two sections. The sections include hooks that interact with one another to lock the spool sections together in one mode of operation, yet permitting the spool sections to act independently in another mode of operation. Complete fluid charging of the fluid system is ensured by dual flow circuitry between the system pump and motor, while a restrictor valve means is connected to the shuttle and pressure relief valve to provide continuous flow of fluid through a system filter.

REFERENCES:
patent: 2601967 (1952-07-01), Larsen
patent: 2811979 (1957-11-01), Presnell
patent: 2961829 (1960-11-01), Weisenbach
patent: 3094937 (1963-06-01), McAfee
patent: 3507298 (1970-04-01), Ratliff
patent: 3512360 (1970-05-01), Bopp et al.
patent: 3591965 (1971-07-01), Bobst et al.

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