Pumps – Motor driven – Fluid motor
Patent
1994-06-21
1996-02-20
Koczo, Michael
Pumps
Motor driven
Fluid motor
74 22R, 417415, 417440, 417454, 417571, F04B 3500
Patent
active
054924570
ABSTRACT:
A hydraulic pump provides unidirectional fluid flow regardless of the direction of rotation of the rotary shaft of the pump. The rotary shaft is affixed to a rotating arm, which arm includes a spherical bearing in the outer end thereof which secures to the pin of a plunger. The rotary shaft is inclined at an angle to the axis of the plunger, resulting in a reciprocating action of the plunger when the rotary shaft is turned. The pump may be motorized by a variety of different power sources, and preferably includes a speed reduction for such motors in order to allow smaller motors and valve assemblies. The valves are preferably included in an easily removable and replaceable integrated cartridge, thus enabling the pump to be quickly adapted to various types of hydraulic devices, such as jacks, hoists, presses, etc. The valving within the cartridge also includes various features providing for compactness and efficiency. The pump also provides for ease of removal and replacement of a motor used for power, to allow operation of the pump by a hand crank if necessary.
REFERENCES:
patent: 1244160 (1917-10-01), Anderson
patent: 1694834 (1928-12-01), Sinclair
patent: 2255852 (1941-09-01), Lundin
patent: 2436493 (1948-02-01), Shepard
patent: 2502279 (1950-03-01), Rood
patent: 2674191 (1954-04-01), Ifield
patent: 2711653 (1955-06-01), Zero
patent: 3039676 (1962-06-01), Mikina
patent: 3061044 (1962-10-01), Shotmeyer
patent: 3382812 (1968-05-01), Smith
patent: 3819303 (1974-06-01), Pfleger
patent: 4531897 (1985-07-01), Orlita
patent: 4597717 (1986-07-01), Mohr
Koczo Michael
Litman Richard C.
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