Diaphragm fluid pump

Details Diaphragm fluid pump Diaphragm fluid pump

1984-04-13

1985-09-17

Freeh, William L.

Pumps

Expansible chamber type

Biasing means effects eduction stroke of abutment driven,...

417129, F04B 4302, F16J 110

Patent

active

045417881

ABSTRACT:
In a diaphragm fluid pump which includes a diaphragm piston assembly assembled within a pump housing to form a pump chamber at one side thereof, the diaphragm piston assembly includes a diaphragm member secured in a fluid-tight manner at its outer periphery to the peripheral wall of the pump housing, and an operation rod connected at one end to the diaphragm member and at another end to a swingable end of a rocker arm to reciprocate the diaphragm piston assembly in an axial direction so as to produce a positive or negative pressure in the pump chamber. A pair of axially spaced upper and lower guide assemblies are mounted within the pump housing to slidably support the operation rod in its axial direction, and a support member is mounted on a lower end portion of the operation rod and slidably supported by the lower guide assembly, the support member being provided at its upper end with a receiver portion for receiving thereon the swingable end of the rocker arm.

REFERENCES:
patent: 2028371 (1936-01-01), Wiltse
patent: 2044957 (1936-06-01), Strebler
patent: 2359960 (1944-10-01), Anderson
patent: 2687696 (1954-08-01), Theis
patent: 2859701 (1958-11-01), Williams
patent: 3035676 (1962-05-01), Nallinger
patent: 3999899 (1976-12-01), Sakai

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