Pump

Details Pump Pump

1999-02-01

2000-12-12

Walberg, Teresa

Pumps

Successive stages

417413R, 417526, F04B 300, F04B 500, F04B 2500

Patent

active

061589713

ABSTRACT:
A pump which performs a pumping function by reciprocally moving a piston by driving a connecting rod so as to maintain a pump chamber in an airtight condition with a diaphragm sandwiched between a piston disposed on a side of a pump chamber and the connecting rod, wherein the diaphragm has a planar plate like form as a whole and a curved portion which is transformed around the piston so as to be brought close to the piston.

REFERENCES:
patent: 4286932 (1981-09-01), Nagano et al.
patent: 4455125 (1984-06-01), Irwin
patent: 4540346 (1985-09-01), Davies
patent: 4624625 (1986-11-01), Schrenker
patent: 5114314 (1992-05-01), Fujimoto
patent: 5332370 (1994-07-01), Nakayama et al.
patent: 5368452 (1994-11-01), Johnson et al.
patent: 5554014 (1996-09-01), Becker
patent: 5950055 (1999-09-01), Yahata et al.

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