Bellows type pump

Details Bellows type pump Bellows type pump

1997-03-13

1998-06-30

Thorpe, Timothy

Pumps

Expansible chamber type

Bellows-type chamber

F04B 4502

Patent

active

057724130

ABSTRACT:
A pump chamber for compressing a liquid such as engine fuel is formed inside a bellows, and the liquid is aspirated into the pump chamber from a suction check valve when the bellows elongates. After the liquid in the pump chamber is pressurized by the contraction of the bellows, it is discharged from a discharge check valve. By providing a fill member for eliminating a dead space in the pump chamber, the formation of air bubbles in the pump chamber is suppressed.

REFERENCES:
patent: 4836756 (1989-06-01), Fukumoto
patent: 5158439 (1992-10-01), Fukumoto

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