Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Cell enclosure structure – e.g. – housing – casing – container,...
Patent
1998-05-15
2000-02-15
Nuzzolillo, Maria
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Cell enclosure structure, e.g., housing, casing, container,...
429164, 429175, 429176, 429185, H01M 200, H01M 204, H01M 208
Patent
active
060250909
ABSTRACT:
An end cap assembly is disclosed for sealing the open end of a cylindrical alkaline cell housing preferably having a diameter less than the diameter of AAA size cells. The end cap assembly is preferably intended for sealing AAAA (LR61) size cylindrical alkaline cells. The end cap assembly comprises a terminal end cap, an insulating sealing disk underlying said end cap, and an elongated current collector penetrating through an aperture in said insulating sealing disk. At least a portion of the insulating sealing disk lies within the cell housing to seal the open end thereof. The terminal end cap is located outside of said housing. The end cap assembly may include an insulating washer between the terminal end cap and the cell housing. The terminal end cap and the insulating washer are stacked over the peripheral edge of the cell housing at the open end of the cell housing. The insulating washer electrically insulates the terminal end cap from the cell housing. The insulating sealing disk has an integrally formed rupturable membrane therein. The membrane ruptures when gas pressure within the cell exceeds a predetermined level.
REFERENCES:
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patent: 3617386 (1971-11-01), Bosben
patent: 4537841 (1985-08-01), Wiacek
patent: 4670362 (1987-06-01), Wiacek
patent: 4999264 (1991-03-01), Shepard et al.
patent: 5080985 (1992-01-01), Wiacek
patent: 5532081 (1996-07-01), Depalma
Gardner William H.
Sargeant Sean A.
Douglas Paul I.
Dove Tracy
Duracell Inc.
Josephs Barry D.
Krivulka Thomas G.
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