Patent US4539271A successfully refreshed from Google Patents.
US4539271A
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Galvanic cell having a coiled electrode assembly
Assignee: Edgewell Personal Care Brands LLC
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Filing: 1984-03-30
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Granted: 1985-09-03
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Expires: 2004-03-30
Abstract
Abstract An electrode assembly for use in a galvanic cell has electrodes disposed in superimposed pockets of separator material and end surfaces having a uniform appearance. Also provided is a method for producing such an electrode assembly which method is readily adaptable to high speed automated processes of manufacture.
Inventors
- 👤 Grace Y. Crabtree
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:35
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/04; H01M6/06; H01M6/10; H01M50/00; H01M50/40; H01M50/463
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
166 words
A galvanic cell comprising a coiled electrode assembly comprising a separator assembly having a first pocket formed by a first strip of separator material superimposed over a second strip of separator material and each separator material having an adherable edge, and a second pocket formed by a first strip of separator material, superimposed over a second strip of separator material and each separator material having an adherable edge, said second pocket being superimposed over said first pocket such that the adherable edges of said first pocket and said second pocket are aligned with at least a portion of the adherable edges adhered to form a seam functioning as a pivot for the first pocket and second pocket; a first electrode disposed in said first pocket; and a second electrode disposed in said second pocket; said electrode assembly coiled about an axis transverse to the adhered edges such that the seam formed by the adhered edges is in a plane which is normal to the coiling axis.
Claim 2
Dependent Claim
166 words
A galvanic cell comprising a coiled electrode assembly comprising a separator assembly having a first pocket formed by a first strip of separator material superimposed over a second strip of separator material and each separator material having an adherable edge, and a second pocket formed by a first strip of separator material, superimposed over a second strip of separator material and each separator material having an adherable edge, said second pocket being superimposed over said first pocket such that the adherable edges of said first pocket and said second pocket are aligned with at least a portion of the adherable edges adhered to form a seam functioning as a pivot for the first pocket and second pocket; a first electrode disposed in said first pocket; and a second electrode disposed in said second pocket; said electrode assembly coiled about an axis transverse to the adhered edges such that the seam formed by the adhered edges is in a plane which is normal to the coiling axis.
Claim 3
Dependent Claim
41 words
The galvanic cell of claim 1 wherein the first strip and second strip of separator material forming the first pocket and the first strip and second strip of separator material forming the second pocket comprise a single piece of separator material.
Claim 4
Dependent Claim
29 words
The galvanic cell of claim 2 wherein the piece of separator material is composed of a heat-adherable material and the adhered edges of said folded separator assemblies are heat-adhered.
Claim 5
Dependent Claim
17 words
The galvanic cell of claim 3 wherein the piece of separator material is composed of microporous polypropylene.
Claim 6
Dependent Claim
34 words
The galvanic cell of claim 1 wherein said first electrode is comprised of lithium and said second electrode is comprised of a compound selected from the group consisting of manganese dioxide and polycarbon fluoride.
Claim 7
Dependent Claim
50 words
The galvanic cell of claim 1 wherein the first strip and second strip of separator material forming the first pocket comprises a first distinct piece of separator material, and the first strip and second strip of separator material forming the second pocket comprises a second distinct piece of separator material.
Claim 8
Dependent Claim
29 words
The galvanic cell of claim 6 wherein said first distinct piece of separator material is composed of a different material than is said second distinct piece of separator material.
Claim 9
Dependent Claim
32 words
The galvanic cell of claim 6 wherein at least one of the first distinct piece of separator material and the second distinct piece of separator material is composed of a heat-adherable material.
Claim 10
Dependent Claim
30 words
The galvanic cell of claim 6 wherein at least one of the first distinct piece of separator material and the second piece of separator material is composed of microporous polypropylene.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-09-02 | 1989-03-04 | 1989-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-02 | 1993-03-04 | 1993-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-02 | 1997-03-04 | 1997-09-03 | $7700.00 | Window Closed / Lapsed |