Valve for a hydraulic ram

Details Valve for a hydraulic ram Valve for a hydraulic ram

1984-02-14

1985-12-24

Maslousky, Paul E.

Motors: expansible chamber type

Application of motive fluid at different pressures to...

91468, 91469, 92134, F15B 13042

Patent

active

045598630

ABSTRACT:
A spool valve for use in a hydraulic ram includes a piston journalled for axial movement within a cylinder under the influence of a fluid fed under pressure to the cylinder. The spool valve is journalled within a valve block closing an end of the cylinder through which passes a piston rod. The valve is biased from one position to another by means of differential areas of a circumferential groove around the spool and by applying fluid to a chamber at one end of the spool.

REFERENCES:
patent: 1636651 (1927-07-01), Smith, Jr.
patent: 1895153 (1933-01-01), Feucht
patent: 3965799 (1976-06-01), Juvonen et al.
patent: 4028995 (1977-06-01), Salmi et al.

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