Compact manual air pump having selectable high volume and high p

Details Compact manual air pump having selectable high volume and high p Compact manual air pump having selectable high volume and high p

1996-07-15

1997-10-14

Gluck, Richard E.

Pumps

Successive stages

Reciprocating rigid stages

F04B 2502

Patent

active

056765290

ABSTRACT:
A pump comprises a pair of coaxial pistons, one slidably positioned in the other for simultaneous compression causing oppositely directed air flow, a passage having a valve for permitting air flow from one such piston to enter the other such piston for increased air flow, and a switching device for selectively opening the passage to ambient for preventing air flow between the pistons. The pump thus has two modes, namely, a high volume mode when the two pistons operate simultaneously to direct combined air flow and a high pressure mode when the passage is opened to ambient to direct air flow from only one of the two pistons having a smaller bore.

REFERENCES:
patent: 753530 (1904-03-01), Eyck
patent: 817538 (1906-04-01), Wixon
patent: 1149324 (1915-08-01), Baldwin et al.
patent: 1187835 (1916-06-01), Hill
patent: 1412279 (1922-04-01), Eslinger
patent: 1424928 (1922-08-01), McClelland
patent: 3302535 (1967-02-01), Procter et al.
patent: 4508490 (1985-04-01), Ramirez et al.
patent: 5051073 (1991-09-01), Newbold
patent: 5165876 (1992-11-01), Wang
patent: 5443370 (1995-08-01), Wang

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