Hermetic seal closure

Details Hermetic seal closure Hermetic seal closure

1980-06-09

1981-07-21

LeFevour, Charles F.

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Cell enclosure structure, e.g., housing, casing, container,...

429185, H01M 202

Patent

active

042799759

ABSTRACT:
A hermetic seal closure for a battery having a case containing corrosive liquid, the case including an end wall with an aperture in it, has an axially outturned lip in the end wall defining the aperture. The lip has a generally flat, free radial surface. A washer of material substantially impervious and resistant to the corrosive liquid covers the free radial surface of the lip. The washer has an under surface projecting radially beyond the perimeter of the lip. A terminal cap of electrically conductive material has a cavity defined by an inner side wall and a central web. The inner side wall embraces the washer and projects axially beyond the washer toward the case end wall, but is spaced axially from the case end wall. Bonding material is bonded to and extends hermetically uninterruptedly through the space between the outer side wall of the lip and the inner side wall of the cap and between those side walls and the under surface of the washer, bonding the cap, washer and case to one another.

REFERENCES:
patent: 3380857 (1968-04-01), Bilhorn
patent: 4122243 (1978-10-01), Tsuchida et al.
patent: 4158721 (1979-06-01), Decker et al.

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