Fluid-dispensing pump and container provided therewith

Details Fluid-dispensing pump and container provided therewith Fluid-dispensing pump and container provided therewith

2005-03-22

2008-10-07

Nicolas, Frederick C. (Department: 3754)

Dispensing

With discharge assistant

Plural

C222S321700, C222S340000, C222S383100, C222S386000

Reexamination Certificate

active

07431181

ABSTRACT:
A fluid-dispensing pump1includes a cylinder11, a piston12which can reciprocate inside the cylinder11, a coupling tube13for coupling the nozzle head2and the piston12, a coil spring17for giving momentum to the piston12in a direction of sending it up via the coupling tube13, an inflow valve mechanism14for introducing a fluid stored inside the fluid-storing portion4into the cylinder11, an outflow valve mechanism15for dispensing the fluid from the nozzle head2, and a leakage prevention mechanism18, which prevents a fluid having flowed into the cylinder11from leaking out to a fluid flow path131of the coupling tube13when a pressure is not applied to the nozzle head2.

REFERENCES:
patent: 3406909 (1968-10-01), Pfeiffer
patent: 4771925 (1988-09-01), Stoffler et al.
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patent: 6047862 (2000-04-01), Davies
patent: 6681962 (2004-01-01), Masuda
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patent: 7306123 (2007-12-01), Masuda
patent: 2002/0166876 (2002-11-01), Masuda
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patent: 64-66475 (1989-03-01), None
patent: 2002-066401 (2002-03-01), None
patent: 2005-21826 (2005-01-01), None
patent: WO 94/20221 (1994-09-01), None
U.S. Appl. No. 11/048,315, filed Feb. 1, 2005, Masatoshi Masuda.

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