Pumps – Expansible chamber type – Moving cylinder
Patent
1976-06-14
1978-08-29
Freeh, William L.
Pumps
Expansible chamber type
Moving cylinder
F04B 1922, F04B 2900
Patent
active
041100603
ABSTRACT:
A positive displacement fluid moving mechanism having economical construction features, novel porting provisions and adjustment means which allow it to possess a very high ratio of fluid displaced per unit rotation in relation to the volume of the displacing mechanism, whereas, this feature allows increased performance due to less energy required to operate the unit due to less internal friction.
REFERENCES:
patent: 968126 (1910-08-01), Clark
patent: 2013862 (1935-09-01), Schulz et al.
patent: 2130037 (1938-09-01), Skarlund
patent: 2258379 (1941-10-01), Estey
patent: 2539277 (1951-01-01), Schroepfor
patent: 3135094 (1964-06-01), Uress
patent: 3630178 (1971-12-01), Erickson
patent: 3878768 (1975-04-01), Aress
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