Pumps – Expansible chamber type – Bellows-type chamber
Patent
1978-03-09
1980-11-04
Freeh, William L.
Pumps
Expansible chamber type
Bellows-type chamber
417435, 417566, 417571, F04B 4300, F04B 3900, F04B 3910
Patent
active
042317240
ABSTRACT:
A reciprocating adjustable stroke positive displacement fluid pump is provided with an expandable chamber driven in the displacement or feed direction by an eccentric drive acting through a driven member. The eccentric drive moves the expandable chamber to its limit of excursion in the displacement or feed direction. Adjustment means cooperating with stop means limits the excursion of the driven member and the expansion of the expandable chamber in the suction or intake direction so that the amount of fluid pumped is continuously adjustable from no volume to the capacity of the expandable chamber by positioning the stop means. The pump is further provided with means for driving a plurality of individually adjustable pumps from the same drive motor and with means for equalizing the load on the pump motor.
REFERENCES:
patent: 862867 (1907-08-01), Eggleston
patent: 1900228 (1933-03-01), Dean
patent: 2351304 (1944-06-01), Tabb
patent: 2553247 (1951-05-01), Fowlor
patent: 2895424 (1959-07-01), Tramontini et al.
patent: 3403696 (1968-10-01), Pynchon
patent: 3446154 (1969-05-01), Fuchs
patent: 3664770 (1972-05-01), Palmer
patent: 3710942 (1973-01-01), Rosenberg
patent: 3981636 (1976-09-01), Aoki
patent: 4030495 (1977-06-01), Uirag
patent: 4084686 (1978-04-01), Mittleman
Hope Henry F.
Hope Stephen F.
Freeh William L.
Sowell John B.
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