Container with surmounting bellows pump

Details Container with surmounting bellows pump Container with surmounting bellows pump

1998-04-28

1999-09-28

Derakshani, Philippe

Dispensing

Resilient wall

Fluid pressure generating pump or pulsator and/or removable...

222211, B65D 3700

Patent

active

059573406

ABSTRACT:
A container for housing fluid material to be dispensed in incremental amounts. A conduit integrally formed with the container and in fluid-flow communication therewith serves to deliver material from the container upon generation of gaseous pressure within the body of the container above the physical level of the material stored therein. The container also includes a restricted filling port fitted with a closure cap. Interposed between the port and the body of the container, in coaxial disposition therewith, is a bellows assembly. The latter surmounts the container in fluid communication therewith, whereby application of manual or digital pressure downwardly upon the capped container effects physical compression of the bellows to force a volume-controlled and repetitively-rerproducible, incremental quantity of stored material from an open, exposed end of the fluid-delivery conduit for use. Withdrawal of compression forces applied to the bellows, and resultant responsive physical re-expansion of the bellows, effects, automatically, a vacuum-derived positive and forceful clearing of residual material from a lineal end sector of the product delivery conduit. Any dripping of material from the open end of the conduit is also obviated.

REFERENCES:
patent: 3398427 (1968-08-01), John
patent: 4645097 (1987-02-01), Kaufman
patent: 4966312 (1990-10-01), Waring
patent: 5307956 (1994-05-01), Richter et al.

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