Compact air pump

Details Compact air pump Compact air pump

1989-10-24

1991-06-25

Smith, Leonard E.

Pumps

Expansible chamber type

Fluid serially moved to opposite side of pumping member

239390, 285312, 417234, 417313, F04B 2102, F16L 3718

Patent

active

050262610

ABSTRACT:
This invention relates to an improved portable air pump and in particular to one that utilizes a compressing rod, a cylinder and a base to pump air in the object that requires air. By pressing the compressing rod down, air will be forced to flow through a one way valve into an air duct and blow out of an air outlet. The spring will return the compressing rod to its original position because of its elastic force. A force block shall cause the cylinder to move forward so that a squeezer may squeeze a rubber fixture to eliminate an air gap so that air will not flow toward other directions but air nozzle as desired.

REFERENCES:
patent: 1362374 (1920-12-01), Twombly
patent: 1409220 (1922-03-01), Leighty et al.
patent: 2539846 (1951-01-01), Lewis et al.
patent: 2576687 (1951-11-01), Krehbiel
patent: 3738688 (1973-06-01), Racine
patent: 3819302 (1974-06-01), Ohashi
patent: 3923325 (1975-12-01), Slater, Jr.
patent: 4508490 (1985-04-01), Ramirez et al.

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