Hydraulic pump

Details Hydraulic pump Hydraulic pump

1988-08-08

1990-01-09

Croyle, Carlton R.

Pumps

Motor driven

Electric or magnetic motor

417511, 417520, 417559, F04B 1700

Patent

active

048924687

ABSTRACT:
A hydraulic pump is disclosed, characterized in that, in the hydraulic pump including a cylinder body having a cylinder chamber, a suction port and an ejection port, a cam member and a reciprocatingly movable member are provided, wherein oil in said cylinder chamber is ejected when said movable member is pushed into said cylinder chamber by the cam member, a cylindrical piston is slidably fitted into said cylinder chamber, so that the movable member is engaged with the cylindrical piston when it is pushed into the cylinder chamber so shut off communication between the cylinder chamber and the suction port and a valve provided in the ejection passage communicating to said ejection port is opened due to the pressure rise when said movable member is further pushed into said cylinder chamber to eject the oil in the cylinder chamber outwardly.

REFERENCES:
patent: 1526343 (1925-02-01), Jouanneaux
patent: 1850926 (1932-03-01), Feyens
patent: 2674955 (1954-04-01), Hilton
patent: 2775212 (1956-12-01), Hilton
patent: 3183580 (1965-05-01), Raymond
patent: 4445825 (1984-05-01), Budecker
patent: 4735048 (1988-04-01), Gregory

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