Bag compressing device for dispensing fluid

Details Bag compressing device for dispensing fluid Bag compressing device for dispensing fluid

1977-10-07

1979-06-12

Scherbel, David A.

Dispensing

Collapsible wall-type container

With wall-collapsing means

100265, 128DIG12, 222340, 222390, B65D 3528

Patent

active

041577710

ABSTRACT:
A device for feeding fluid at substantially constant pressure from a flexible container compressible by a pressure plate movable toward and away from a stationary plate to form a variable volume chamber for the container. A linkage connects the pressure plate to spaced-apart transverse tensioning plates attached to the ends of a tensioning spring. The spring encircles a screw having threaded oppositely portions with nuts thereon for spreading the tensioning plates apart to tension the spring and move the pressure plate away from the stationary plate when the screw is rotated in one direction, and the tensioning plates are axially retractable on the screw by spring tension when the nuts are retracted by reversely rotating the screw, to apply substantially constant closing pressure through the linkage to the pressure plate.

REFERENCES:
patent: 3625401 (1971-12-01), Terry
patent: 3902635 (1975-09-01), Jinotti
patent: 4033479 (1977-07-01), Fletcher et al.
"Toggle Linkage Applications in Different Mechanisms", Product Engineering, Annual Handbook of Product Design of 1953, pp. F26, 27.

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