Pumps – Expansible chamber type – Bellows-type chamber
Patent
1987-12-03
1990-04-10
Smith, Leonard E.
Pumps
Expansible chamber type
Bellows-type chamber
417552, 222153, 222321, F04B 4300, F04B 2104, B67D 542, B67D 8854
Patent
active
049156012
ABSTRACT:
A dosaging pump which can be placed, in particular, on bottles or the like, having a pump bellows and two valves, one of which is associated with the inlet side and the other with a nozzle. The nozzle-side valve-closure member (10) is seated in the cover (10) of a cap which grips over the pump bellows. A cup surrounds the pump bellows, the inlet-side valve-closure member being seated in the bottom of the cup. End portions of the pump bellows are seated on separate collars of the cup and the cap, the cap and cup being moveable relative to each other during pumping, and the valve-closure members communicate with the interior of the bellows.
REFERENCES:
patent: 1572045 (1926-02-01), Scott
patent: 2044594 (1936-06-01), Scholfield
patent: 2686006 (1954-08-01), Hasselquist
patent: 2824672 (1958-02-01), Wersching
patent: 3124275 (1964-03-01), Lake
patent: 3161329 (1964-12-01), Fedit et al.
patent: 4147282 (1979-04-01), Levy
patent: 4162746 (1979-07-01), Anderson et al.
patent: 4220264 (1980-09-01), Gamadia
patent: 4336895 (1982-06-01), Aleff
patent: 4369899 (1983-01-01), Magers et al.
patent: 4489861 (1984-12-01), Saito et al.
Farber Martin A.
Mega Product- und Verpackungsentwicklung Marketing GmbH & Co.
Smith Leonard E.
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