Air pump with dual air intakes

Details Air pump with dual air intakes Air pump with dual air intakes

1997-01-06

1997-12-30

Gluck, Richard E.

Pumps

Expansible chamber type

Mechanically actuated distributor

417526, F04R 100

Patent

active

057022399

ABSTRACT:
An air pump with dual air intakes includes a pump body having an enclosed end with a securing point at its inner side for retaining a diaphragm, and an open end connecting to a cover. The cover has a securing point at its inner side for retaining a diaphragm. The cover and the enclosed end are provided with multiple air inlets. The diaphragms may cover the air inlets. The cover has a central hole through which a piston rod passes. A piston is connected to an inner end of the piston rod and is provided with an annular groove with through holes communicating with the piston rod. The annular groove is fitted with an annular gasket. A pump head is connected to a projected end of the piston rod. The pump head is connected to an air outlet and a check valve communicating with the piston rod. When the piston displaces, air is drawn in via the ends of the pump body through the annular gasket and the annular groove into the piston rod via the through holes and is then discharged via the check valve and the air outlet.

REFERENCES:
patent: 3904325 (1975-09-01), Olofsson et al.
patent: 5102052 (1992-04-01), Demarest et al.

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