Liquid purifying device incorporating air pumping means within c

Details Liquid purifying device incorporating air pumping means within c Liquid purifying device incorporating air pumping means within c

1991-04-17

1992-06-09

Dawson, Robert A.

Liquid purification or separation

Serially connected distinct treating with or without storage...

One unit inside another

210258, 2103218, 21032189, 2104161, 210435, 210454, 222189, 222209, B01D 3500, B01D 6300

Patent

active

051204380

ABSTRACT:
A liquid purifying device for dispensing a liquid, including a container which has an interior space for storing a liquid, and a lid member for closing the interior space. The liquid is delivered out of the container, due to a pressure of a compressed air which is introduced into the interior space by air pumping means. The air pumping means includes a cylinder member which is reciprocated between an advanced position and a retracted position. The cylinder member is normally biased toward the advanced position, but may be held in the retracted position where appropriate. The lid member of the container has a liquid delivery path through which the liquid is delivered as desired, when a valve disposed in the path is placed in its open position upon pressing of a push-operated member. In the liquid delivery path, there is provided a filter adapted to remove bacteria from the liquid delivered through the path.

REFERENCES:
patent: 4344548 (1982-08-01), Frazier
patent: 4426285 (1984-01-01), Davis
patent: 4713173 (1987-12-01), Bray
patent: 4714550 (1987-12-01), Malson et al.
patent: 4940542 (1990-07-01), Simizu et al.

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