Pumps – Three or more cylinders arranged in parallel – radial – or...
Patent
1985-06-25
1986-09-09
Freeh, William L.
Pumps
Three or more cylinders arranged in parallel, radial, or...
417566, 92 48, 92100, F04B 118, F04B 4300, F01B 1900
Patent
active
046106057
ABSTRACT:
A pump comprising a housing and a flexible diaphragm mounted in the housing. A first region of the diaphragm partially defines a first pumping chamber, and the pumping chamber has an inlet and an outlet. A wobble plate drive is coupled to the first region of the diaphragm to provide a pumping action in the pumping chamber. The wobble plate drive has a nutating axis, and the first region of the diaphragm lies radially outwardly of the nutating axis. The first region of the diaphragm has a generally annular ramp section which flexes when driven by the wobble plate drive to provide the pumping action, and the ramp section is wider radially at a location remote from the nutating axis than at a location nearer the nutating axis. The pump also has a single outlet valve arranged to serve multiple pumping chambers.
REFERENCES:
patent: 2797647 (1957-07-01), Floraday
patent: 2931311 (1960-04-01), Ulm et al.
patent: 2991723 (1961-07-01), Zubaty
patent: 3010403 (1961-11-01), Zubaty
patent: 4153391 (1979-05-01), Hartley
patent: 4396357 (1983-08-01), Hartley
patent: 4515531 (1985-05-01), Roser
Freeh William L.
Peterson Gordon L.
Product Research And Development
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