Pressure balancing device which is watertight as concerns rainwa

Details Pressure balancing device which is watertight as concerns rainwa Pressure balancing device which is watertight as concerns rainwa

1984-05-21

1985-05-14

Pollard, Steven M.

Receptacles

Container attachment or adjunct

Pressure relief means

220 83, 220367, 220 15, B65B 304, B65D 5116

Patent

active

045166862

ABSTRACT:
The device comprises a chamber 9 having an outer wall 10 and an inner wall 12 which separates it from the container, the chamber 9 communicating with the exterior through at least one orifice 16, 16a, 16b, 16c in the outer wall 10 and with the interior of the container through a tube 13 which extends through the inner wall 12 and projects into the chamber 9. The shape of the inner wall 12 and the position of the orifice 16, 16a, 16b, 16c being such that, in any position of the container, the orifice, or a part of the orifice, is located at a level lower than the level of the inner end 15 of the tube 13 so that any liquid which may be contained in the chamber cannot penetrate into the container.

REFERENCES:
patent: 2113454 (1938-04-01), Mitchell
patent: 2939603 (1960-06-01), Young
patent: 3029967 (1962-04-01), Morrison
patent: 3356249 (1967-12-01), Koester
patent: 3888382 (1975-06-01), Blumhardt
patent: 4013105 (1977-03-01), Uuskallio

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