Pneumatic bellows pump with supported bellows tube

Details Pneumatic bellows pump with supported bellows tube Pneumatic bellows pump with supported bellows tube

1992-04-24

1993-07-06

Bertsch, Richard A.

Pumps

Motor driven

Fluid motor

417473, 92 37, 92 44, F04B 317

Patent

active

052248410

ABSTRACT:
A low contamination double bellows pump suitable for providing relatively constant pressure and delivery. The illustrated pump includes two pumping chambers with bellows arranged in opposed relationship on opposite sides of a central section. The central section acts as a valve body for inlet and outlet valves. The bellows are provided with interior bellows tubes which connect to the free ends of the bellows and slide upon stationary support pistons mounted within each tube. Bellows tube head pieces slide upon piston rods which support the pistons. Pneumatic pressure is controllably supplied to opposing sides of the pistons within the bellows tubes to power the bellows and effect pumping.

REFERENCES:
patent: 3847511 (1974-11-01), Cole
patent: 4543044 (1985-09-01), Simmons
patent: 4902206 (1990-02-01), Nakazawa
patent: 4983104 (1991-01-01), Kingsford
patent: 5141412 (1992-08-01), Meinz

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