Vacuum bottle construction

Details Vacuum bottle construction Vacuum bottle construction

1977-09-01

1980-04-29

Shoap, Alan N.

Receptacles

Receptacle having flexible, removable inner liner

Means for venting air trapped between the liner and its...

215 13R, 220 71, 220430, 220458, A47J 4102, B65D 2514, B65D 2518

Patent

active

042001994

ABSTRACT:
A vacuum bottle construction as disclosed in which the vacuum filter is formed from a pair of concentric thin wall metal cylinders. The cylinders are formed of a thin metallic material, such as mild steel, which in and of itself is so thin as to be unable to withstand the pressure differential of atmospheric pressure on one side and a substantial vacuum on the other side. To prevent collapse of the outer thin wall cylinder due to this pressure differential means are provided in the space between the cylinders bearing against the outer wall to provide a force opposing that of the pressure differential.

REFERENCES:
patent: 889992 (1908-06-01), Van Wye
patent: 909203 (1909-01-01), Neuner
patent: 916450 (1909-03-01), Keller
patent: 921729 (1909-05-01), Paalen
patent: 1421325 (1922-06-01), Walker
patent: 2070672 (1937-02-01), Moczala
patent: 3048294 (1962-08-01), Osborn
patent: 3295709 (1967-01-01), Herrick
patent: 3813757 (1974-06-01), Bell
patent: 3845873 (1974-11-01), Bridges
patent: 3863794 (1975-02-01), Hata

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