Chemistry: electrical current producing apparatus – product – and – Means externally releasing internal gas pressure from closed...
Patent
1998-03-24
2000-10-03
Nuzzolillo, Maria
Chemistry: electrical current producing apparatus, product, and
Means externally releasing internal gas pressure from closed...
429 56, 429 72, H01M 212
Patent
active
061270628
ABSTRACT:
An end cap seal assembly for an electrochemical cell such as an alkaline cell is disclosed. The end cap assembly comprises a convoluted end cap disk which may also function as a cell terminal and an underlying insulating disk also having a convoluted surface. The convoluted end cap disk has a downwardly extending wall with at least one aperture therethrough which preferably faces the ambient environment. The insulating disk has a downwardly extending wall forming a rupturable membrane which underlies and abuts the inside surface of the downwardly extending wall of the end cap. The rupturable membrane underlies and abuts the aperture in the downwardly extending wall of the end cap. When gas pressure within the cell exceeds a predetermined level the rupturable membrane pushes through said aperture and ruptures allowing gas to escape therefrom directly to the environment. A separate terminal plate may be welded to a portion of the top surface of the convoluted end cap. The conductive layer of a film-laminate condition tester may be connected to the terminal plate.
REFERENCES:
patent: 3218197 (1965-11-01), Carmichael et al.
patent: 3219488 (1965-11-01), Southworth
patent: 3314824 (1967-04-01), Spanur
patent: 3617386 (1971-11-01), Bosben et al.
patent: 4227701 (1980-10-01), Tsuchida et al.
patent: 4237203 (1980-12-01), Tsuchida et al.
patent: 4476200 (1984-10-01), Markin et al.
patent: 4537841 (1985-08-01), Wiacek et al.
patent: 4581304 (1986-04-01), Beatty et al.
patent: 5080985 (1992-01-01), Wiacek et al.
patent: 5491038 (1996-02-01), DePalma et al.
patent: 5532081 (1996-07-01), DePalma et al.
patent: 5543246 (1996-08-01), Treger
patent: 5554455 (1996-09-01), Inoue
patent: 5589293 (1996-12-01), Pope
patent: 5612151 (1997-03-01), Hughen
patent: 5614333 (1997-03-01), Hughen et al.
patent: 5691073 (1997-11-01), Vu
Gardner William H.
Hession John
Sargeant Sean A.
Douglas Paul I.
Duracell Inc
Josephs Barry D.
Krivulka Thomas G.
Nuzzolillo Maria
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