Device for administering liquids

Details Device for administering liquids Device for administering liquids

2005-09-27

2005-09-27

Kaufman, Joseph A. (Department: 3754)

Dispensing

Collapsible wall-type container

With wall-collapsing means

C222S153030, C604S135000, C604S214000

Reexamination Certificate

active

06948636

ABSTRACT:
A device for dispensing liquid from a bag has upper and lower casing halves and a closure holding together the casing halves. A pressure piston in the casing can press the bag against the lower casing half. This piston is operated by a rocking lever having an upper end bearing on the upper casing half and a lower end on which the piston is pivoted and a tension spring and flexible element connected between the casing halves and the upper end of the rocking lever and angularly biasing the lever for movement from a generally horizontal position with the piston raised and a tilted position with the piston lowered for applying such a force to the pressure piston that a pressure is generated in the bag that causes the discharge of a constant liquid volume per unit of time.

REFERENCES:
patent: 4033479 (1977-07-01), Fletcher et al.
patent: 4157771 (1979-06-01), Smith
patent: 4991743 (1991-02-01), Walker
patent: 5025953 (1991-06-01), Doundoulakis
patent: 5281202 (1994-01-01), Weber et al.
patent: 6358239 (2002-03-01), Rake et al.

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