Fluid intensifier

Details Fluid intensifier Fluid intensifier

1995-04-24

1996-01-16

Bertsch, Richard A.

Pumps

Intensifier

417401, 417521, 417534, F04B 1700, F04B 3502

Patent

active

054842697

ABSTRACT:
A fluid intensifier (10) includes an unequal-area pump piston (11) and a drive piston (14). The large-area pump piston chamber (21) communicates with the small-area pump piston chamber (29) via a communicating conduit (30) having a check valve (25) therein. The pump piston is coupled to a drive piston (14) having a lost-motion connection (18) with a two-lobed pilot valve spool (41). The pilot valve (16) controls a pilot pressure in the spool end chamber (60) of a spring-biased control valve (19). The fluid intensifier is automatically reversing as the pump piston approaches either end of its stroke, and is arranged to provide a substantially-constant intensified fluid pressure (P.sub.i) at an outlet.

REFERENCES:
patent: 2296647 (1942-09-01), McCormick
patent: 2532679 (1950-12-01), Slater
patent: 2539292 (1951-01-01), Anderson
patent: 2864313 (1958-12-01), Dawson
patent: 3086470 (1963-04-01), Skipor et al.
patent: 3720484 (1973-03-01), Kirshsieper
patent: 4051877 (1977-10-01), Fletcher et al.
patent: 4229143 (1980-10-01), Pucher et al.
patent: 4601642 (1986-07-01), Andrews
patent: 4631000 (1986-12-01), Burandt
patent: 4767282 (1988-08-01), Igarashi et al.

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