Diaphragm type pump device having a cushion member

Details Diaphragm type pump device having a cushion member Diaphragm type pump device having a cushion member

1986-06-12

1987-05-19

Croyle, Carlton R.

Pumps

Expansible chamber type

Having pumping chamber pressure responsive distributor

92 85R, 92100, F04B 2102, F01B 1902

Patent

active

046663789

ABSTRACT:
A diaphragm type pump device has an elastic material imparting elasticity by the change of its volume which is placed in an operation chamber to decrease residual volume in the operation chamber when a diaphragm reaches the upper dead point.

REFERENCES:
patent: 623662 (1899-04-01), Goss
patent: 862867 (1886-07-01), Eggleston
patent: 2515110 (1950-07-01), Bornstein
patent: 3241494 (1966-03-01), Johnson
patent: 3945401 (1976-03-01), Greenwood
patent: 3969045 (1976-07-01), Sakai et al.
patent: 3999899 (1976-12-01), Sakai et al.
patent: 4050861 (1977-09-01), Sakai et al.
patent: 4290347 (1981-09-01), Basch

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