Pumps – Expansible chamber type – Plural pumping chambers
Patent
1977-06-06
1979-01-02
Freeh, William L.
Pumps
Expansible chamber type
Plural pumping chambers
92255, 92153, F04B 3902, F04B 2104
Patent
active
041325109
ABSTRACT:
A compressor of a Scotch-yoke type, which includes: a piston consisting of a pair of bottomed cylindrical members, with the open ends of the members being mated with each other; a slider confined between the opposed bottoms of the piston, and slidable along the inner surfaces thereof in the direction perpendicular to the axis of the piston; and a crank cam secured to a drive shaft extending through opposed openings defined in the wall of piston, i.e., in a mated portion of the cylindrical members, and fitted in a bore provided in the slider rotatably. In this compressor, the aforesaid mated portion of the bottomed cylindrical members are further provided with opposed openings or windows in the direction of the reciprocating or sliding slider, so that parts of flanks of the slider may go into the aforesaid windows, thereby increasing a stroke of the piston. In addition, respective bottom walls of the cylinder, in which the piston is slidingly fitted, are provided with valve mechanisms, which allow both inflow and outflow of a fluid in response to the reciprocating movement of the piston within the cylinder. Assuming that the direction of a drive shaft having a cam slidingly fitted in the bore in the slider is longitudinal, then the direction of the reciprocating piston is vertical, and the direction of the reciprocating slider is lateral.
REFERENCES:
patent: 2055096 (1936-09-01), Phillips et al.
patent: 2614009 (1952-10-01), Butterfield
patent: 2779644 (1957-01-01), Lovatt
patent: 3160229 (1964-12-01), Teresawa
patent: 3456874 (1969-07-01), Graper
patent: 3834840 (1974-09-01), Hartley
Freeh William L.
Sampei Komiya
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