Pumps – Motor driven – Fluid motor
Patent
1987-12-14
1989-07-11
Smith, Leonard E.
Pumps
Motor driven
Fluid motor
417400, 91222, 91226, 91229, F04B 910
Patent
active
048466344
ABSTRACT:
Disclosed is a device for converting pressure fluid input of one fluid to pressure fluid output of a second fluid without contaminating either fluid. The transformation is accomplished by a unique H section piston which cooperates the internally protruding endcaps enclosed in a double ended cylinder; the piston having a central control valve which reverses the piston on control pin end of stroke contact. Positive reverse action is obtained by means of endcap plungers which operate in response to piston position and pressure of the one fluid. The device is double acting and is enclosed totally within a single cylindrical module which is compact and inexpensive to manufacture.
REFERENCES:
patent: 496898 (1893-05-01), Reagan, Jr.
patent: 788071 (1905-04-01), Schiffbauer
patent: 3072103 (1963-01-01), Herrmann
patent: 3363575 (1968-01-01), Potts
patent: 4212597 (1980-07-01), Mallofre
patent: 4286929 (1981-09-01), Heath et al.
Lyon Leland H.
Newman Derek E.
Vos Godfrey G.
Ingersoll-Rand Company
Smith Leonard E.
Vliet Walter C.
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