US4389470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminar cells and batteries
Assignee: Polaroid Corp
•
Filing: 1981-08-24
•
Granted: 1983-06-21
•
Expires: 2001-08-24
Abstract
Abstract A laminar battery comprising an end terminal formed with a pocket to accept internal components without requiring additional edge thickness in the seal area, incorporating as the separator in at least the cell immediately adjacent the pocketed end terminal a layer of cellophane together with a layer of paper on the side of the cellophane confronting the cathode.
Inventors
- 👤 Paul A. Plasse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:52
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/42; H01M6/46; H01M6/48
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
127 words
A battery comprising a stack of laminar cells terminated at one end by an end terminal formed with a pocket, said end terminal comprising an external metal collector sheet laminated to a sheet of conductive plastic confronting the cell components, said cells each comprising at least one electrode comprising a slurry of electrochemically active particles in an aqueous electrolyte, a second electrode, and a separator between said slurry electrode and said second electrode, in which at least the separator in the cell adjacent said pocketed end terminal comprises a layer of regenerated cellulose in contact with said second electrode and a layer of porous bibulous material over said regenerated cellulose layer and in contact with said slurry electrode to limit migration of electrolyte from said slurry electrode.
Claim 2
Dependent Claim
127 words
A battery comprising a stack of laminar cells terminated at one end by an end terminal formed with a pocket, said end terminal comprising an external metal collector sheet laminated to a sheet of conductive plastic confronting the cell components, said cells each comprising at least one electrode comprising a slurry of electrochemically active particles in an aqueous electrolyte, a second electrode, and a separator between said slurry electrode and said second electrode, in which at least the separator in the cell adjacent said pocketed end terminal comprises a layer of regenerated cellulose in contact with said second electrode and a layer of porous bibulous material over said regenerated cellulose layer and in contact with said slurry electrode to limit migration of electrolyte from said slurry electrode.
Claim 3
Dependent Claim
15 words
The battery of claim 1, in which said porous bibulous material consists essentially of paper.
Claim 4
Dependent Claim
38 words
The battery of claim 1, in which the separators in all of the cells each comprise a layer of cellophane in contact with said second electrode and a layer of porous bibulous material over said regenerated cellulose layer.
Claim 5
Dependent Claim
92 words
A laminar electrical cell, comprising a powdered zinc anode adhered to a conductive substrate by a binder, a cathode slurry of manganese dioxide and carbon particles in an aqueous solution of electrolyte containing NH 4 Cl and ZnCl 2 , and a composite separator between said anode and said cathode slurry, said separator comprising a layer of regenerated cellulose in contact with said anode and a layer of porous bibulous material over said regenerated cellulose layer and in contact with said cathode slurry to limit migration of electrolyte from said cathode slurry.
Claim 6
Dependent Claim
92 words
A laminar electrical cell, comprising a powdered zinc anode adhered to a conductive substrate by a binder, a cathode slurry of manganese dioxide and carbon particles in an aqueous solution of electrolyte containing NH 4 Cl and ZnCl 2 , and a composite separator between said anode and said cathode slurry, said separator comprising a layer of regenerated cellulose in contact with said anode and a layer of porous bibulous material over said regenerated cellulose layer and in contact with said cathode slurry to limit migration of electrolyte from said cathode slurry.
Claim 7
Dependent Claim
13 words
The cell of claim 4, in which said porous bibulous material is paper.
References Cited (Backward Citations)
US2870235A
Cited
US3440110A
Cited
US3615861A
Cited
US3669746A
Cited
US4018970A
Cited
US4019251A
Cited
US4119770A
Cited
US4105831A
Cited
US4254191A
Cited
US4256813A
Cited
US4086400A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-06-20 | 1986-12-20 | 1987-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-20 | 1990-12-20 | 1991-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-20 | 1994-12-20 | 1995-06-21 | $7700.00 | Window Closed / Lapsed |