Bellows pump with extension having integral valves

Details Bellows pump with extension having integral valves Bellows pump with extension having integral valves

1975-09-29

1976-08-10

Knowles, Allen N.

Dispensing

With lock or fastening seal

Plural

222207, 222380, B67D 102

Patent

active

039737004

ABSTRACT:
A pump or spray is comprised of a flexible bellows having a non-collapsible extension in which there are inlet and outlet ports. Flapper valves, integral with the extension, open and close the ports on the compression and expansion strokes of the bellows. The bellows may be finger or trigger operated.

REFERENCES:
patent: 1647219 (1927-11-01), Fulton
patent: 3160329 (1964-12-01), Radic et al.

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