Patent US4181778A successfully refreshed from Google Patents.
US4181778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel battery anode
Assignee: Polaroid Corp
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Filing: 1976-03-17
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Granted: 1980-01-01
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Expires: 1996-03-17
Abstract
Abstract A relatively thin, flat or planar battery which includes one or more cells, each cell having a planar anode in superposed relationship with a planar cathode and a separator disposed intermediate and extending substantially coextensive the facing surfaces of the anode and cathode and possessing an aqueous electrolyte solution disposed in the central portion of the separator. The end cell anode comprises a zinc sheet carrying a coating of zinc particles wherein both the sheet and the particles are in contact with the electrolyte.
Inventors
- 👤 Edwin H. Land
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:24
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/06; H01M50/00; H01M50/30; H01M50/394; H01M6/00; H01M6/40
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
122 words
In a planar battery which comprises, in combination and in superposed relationship, electrical energy generating components including: (a) a planar end cell anode; (b) a planar cathode comprising manganese dioxide/carbon black superposed substantially coextensive the anode; (c) a planar separator positioned intermediate and extending substantially coextensive the facing surfaces of the anode and the cathode; and (d) a solution of an electrolyte comprising ammonium chloride/zinc chloride disposed in the separator and in contact with the facing surfaces of the anode and the cathode; the improvement which comprises said end cell anode comprising a zinc sheet carrying a layer of zinc particles on the surface thereof next adjacent said cathode, wherein both said sheet and said particles are in contact with said electrolyte.
Claim 2
Dependent Claim
122 words
In a planar battery which comprises, in combination and in superposed relationship, electrical energy generating components including: (a) a planar end cell anode; (b) a planar cathode comprising manganese dioxide/carbon black superposed substantially coextensive the anode; (c) a planar separator positioned intermediate and extending substantially coextensive the facing surfaces of the anode and the cathode; and (d) a solution of an electrolyte comprising ammonium chloride/zinc chloride disposed in the separator and in contact with the facing surfaces of the anode and the cathode; the improvement which comprises said end cell anode comprising a zinc sheet carrying a layer of zinc particles on the surface thereof next adjacent said cathode, wherein both said sheet and said particles are in contact with said electrolyte.
Claim 3
Dependent Claim
23 words
The product of claim 1 wherein said anode includes at least one gas release orifice extending through said sheet normal to its plane.
Claim 4
Dependent Claim
21 words
The product of claim 1 wherein the carbon and manganese dioxide are disposed in an electrically conductive ionically permeable polymeric matrix.
Claim 5
Dependent Claim
14 words
The product of claim 1 wherein said zinc particle layer includes a polymeric binder.
Claim 6
Dependent Claim
26 words
The product of claim 3 wherein the carbon/manganese dioxide mixture is secured to the surface of a conductive carbon retaining polymeric sheet positioned distal the separator.
Claim 7
Dependent Claim
26 words
The product of claim 5 wherein a conductive metallic sheet is secured to the surface of the exterior conductive carbon retaining sheet opposite the carbon/manganese mixture.
Claim 8
Dependent Claim
16 words
The product of claim 6 wherein the electrolyte is disposed in an ionically permeable polymeric matrix.
Claim 9
Dependent Claim
13 words
The product of claim 7 wherein the separator comprises electrolyte permeable fibrous sheet.
Claim 10
Dependent Claim
40 words
The product of claim 1 wherein the marginal portions of the separator comprise electrolyte permeable separator sheet impregnated with an electrolyte impermeable thermoplastic polymer in a concentration effective to prevent electrolyte permeation of the marginal portions of the separator sheet.
Claim 11
Dependent Claim
18 words
The product as defined in claim 1 which includes a plurality of cells in stacked and series relationship.
Claim 12
Dependent Claim
115 words
A planar battery which comprises a plurality of cells which comprise, in order: (a) a planar metal anode; (b) a planar separator positioned intermediate the facing surfaces of the anode and the cathode; (c) a solution of an electrolyte comprising ammonium chloride/zinc chloride disposed in said separator and in contact with said anode and said cathode; (d) a planar cathode comprising manganese dioxide/carbon dioxide; and (e) a conductive, electrolyte impermeable intercell connector disposed intermediate each consecutive pair of cells; wherein the end cell anode comprises a zinc sheet carrying a layer of zinc particles on the surface thereof next adjacent said cathode; wherein both said sheet and said particles are in contact with said electrolyte.
Claim 13
Dependent Claim
115 words
A planar battery which comprises a plurality of cells which comprise, in order: (a) a planar metal anode; (b) a planar separator positioned intermediate the facing surfaces of the anode and the cathode; (c) a solution of an electrolyte comprising ammonium chloride/zinc chloride disposed in said separator and in contact with said anode and said cathode; (d) a planar cathode comprising manganese dioxide/carbon dioxide; and (e) a conductive, electrolyte impermeable intercell connector disposed intermediate each consecutive pair of cells; wherein the end cell anode comprises a zinc sheet carrying a layer of zinc particles on the surface thereof next adjacent said cathode; wherein both said sheet and said particles are in contact with said electrolyte.
Claim 14
Dependent Claim
26 words
The battery as defined in claim 11 wherein said metal sheet includes at least one gas release orifice extending through said sheet normal to its plane.
References Cited (Backward Citations)
US2987567A
Cited
US3069486A
Cited
US3201281A
Cited
US3672998A
Cited
US3647544A
Cited
US3543662A
Cited
US3563805A
Cited
US3617387A
Cited
US3740270A
Cited
US3770504A
Cited
US3770505A
Cited
US3734780A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-12-31 | 1983-07-02 | 1984-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-31 | 1987-07-02 | 1988-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-31 | 1991-07-02 | 1992-01-01 | $7700.00 | Window Closed / Lapsed |