Single dose air pressure operated dispenser

Details Single dose air pressure operated dispenser Single dose air pressure operated dispenser

1975-06-24

1977-04-12

Reeves, Robert B.

Dispensing

With cutter and/or punch

222193, 222325, 128266, B05B 726, B65D 8306, A61M 1300

Patent

active

040170071

ABSTRACT:
An air pressure-operated dispenser for spraying a single dose of a fluent material of liquid or powder form. The dispenser has a single dose container having a compressed air inlet opening and a closable discharge orifice and means for closing the discharge orifice in a non-dispensing position of the dispenser. An air-compressing piston pump having a compressed air outlet from a compression space thereof is provided on the dispenser at the junction of the inlet opening and the compressed air outlet. The inlet opening of the single dose container is joined to the compressed air outlet of the compression space and valve means is provided on the piston pump for releasing a flow of compressed air after build up of a determined excess pressure.

REFERENCES:
patent: 1989715 (1935-02-01), Statham
patent: 2071679 (1937-02-01), Bretschger
patent: 2163477 (1939-06-01), Warr et al.
patent: 2283796 (1942-05-01), Darms
patent: 2301718 (1942-11-01), Thorne

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