Pumps – Expansible chamber type – Valved piston
Patent
1981-02-17
1983-09-13
Cohan, Alan
Pumps
Expansible chamber type
Valved piston
251231, 222383, F04B 704
Patent
active
044039263
ABSTRACT:
A barrel pump having a handle attached to a freely rotatable ring-like member carried on the head portion of the pump whereby the handle can be freely swiveled in relation to the head portion to enable the handle to be positioned at substantially any angle with relation to the spout of the pump.
REFERENCES:
patent: 1485958 (1924-03-01), Bridgham
patent: 1630133 (1927-05-01), Murphy
patent: 1718985 (1929-07-01), Scoville
patent: 3473479 (1969-10-01), Sundholm
patent: 3752604 (1973-08-01), Dorn
Cohan Alan
Witco Chemical Corporation
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