Pumps – Expansible chamber type – Plural pumping chambers
Patent
1978-08-28
1981-02-24
Freeh, William L.
Pumps
Expansible chamber type
Plural pumping chambers
F04B 2102, F04B 3910
Patent
active
042525101
ABSTRACT:
A diaphragm pump for use with corrosive fluids. The pump comprises a pair of opposed fluid chambers each defined in part by a flexible diaphragm. The pump also includes means for reciprocally driving the diaphragms and inlet and outlet check valves. The unique structure of the pump allows all wetted components thereof to be economically formed from a substantially chemically inert material such as polytetrafluoroethylene and the like.
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patent: 2552703 (1951-05-01), Alowso
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patent: 3151778 (1964-10-01), Olney et al.
patent: 3782863 (1974-01-01), Rupp
patent: 4123204 (1978-10-01), Scholle
Bromley Bruce A.
Freeh William L.
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