Patent US3985573A successfully refreshed from Google Patents.
US3985573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slotted cathode collector bobbin for use in liquid cathode cell systems
Assignee: Edgewell Personal Care Brands LLC
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Filing: 1975-06-30
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Granted: 1976-10-12
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Expires: 1995-06-30
Abstract
Abstract The invention relates to an electrochemical cell employing a liquid active cathode material in conjunction with an active metal anode and an elastically deformable carbonaceous cathode collector in the form of a slotted annular bobbin.
Inventors
- 👤 Daniel H. Johnson
- 👤 David M. Kubala
- 👤 Roswell J. Bennett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:16
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/04; H01M4/00; H01M4/02; H01M4/64; H01M6/14; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
182 words
An electrochemical cell comprising an electrically conductive can closed at one end and open at the other end; an anode layer disposed within and in surface contact with said can thereby adapting said can as a first terminal for the cell; a porous separator layer disposed within and in surface contact with said anode layer; an elastically deformable carbonaceous cathode collector in the form of a slotted annular bobbin disposed within and in surface contact with said separator layer, said cathode collector exerting a bias against said separator which in turn contacts the anode thereby effectively maintaining good physical contact between the cathode collector, separator and anode during discharge of the cell; and active reducible cathode solution disposed within and through said cathode collector and said separator layer; a cover for said can; an insulating member interposed between said cover and the open end of said can such that a seal is formed between said cover and said can; and an electrically conductive means contacting said cathode collector and said cover thereby adapting said cover as the second terminal of the cell.
Claim 2
Dependent Claim
182 words
An electrochemical cell comprising an electrically conductive can closed at one end and open at the other end; an anode layer disposed within and in surface contact with said can thereby adapting said can as a first terminal for the cell; a porous separator layer disposed within and in surface contact with said anode layer; an elastically deformable carbonaceous cathode collector in the form of a slotted annular bobbin disposed within and in surface contact with said separator layer, said cathode collector exerting a bias against said separator which in turn contacts the anode thereby effectively maintaining good physical contact between the cathode collector, separator and anode during discharge of the cell; and active reducible cathode solution disposed within and through said cathode collector and said separator layer; a cover for said can; an insulating member interposed between said cover and the open end of said can such that a seal is formed between said cover and said can; and an electrically conductive means contacting said cathode collector and said cover thereby adapting said cover as the second terminal of the cell.
Claim 3
Dependent Claim
46 words
The electrochemical cell of claim 1 wherein the cathode collector contains a binder in an amount between about 10% and about 30% by weight of the collector, said binder selected from the group consisting of vinyl polymers, polyethylene, polypropylene, acrylic polymers, polystyrene, polytetrafluoroethylene, and rubber elastomers.
Claim 4
Dependent Claim
23 words
The electrochemical cell of claim 1 wherein a spring member is longitudinally disposed within the cathode collector approximately midway of its radial length.
Claim 5
Dependent Claim
29 words
The electrochemical cell of claim 1 wherein the cathode collector has a longitudinal slot with a width between about 0.05 inch (0.13 cm) and about 0.40 inch (1.02 cm).
Claim 6
Dependent Claim
23 words
The electrochemical cell of claim 1 wherein the cathode collector comprises about 75% by weight acetylene black and about 25% by weight polytetrafluoroethylene.
Claim 7
Dependent Claim
23 words
The electrochemical cell of claim 1 wherein the cathode collector comprises about 90% by weight acetylene black and about 10% by weight polytetrafluoroethylene.
Claim 8
Dependent Claim
29 words
The electrochemical cell of claim 3 wherein the cathode collector has a longitudinal slot with a width between about 0.05 inch (0.13 cm) and about 0.40 inch (1.02 cm).
Claim 9
Dependent Claim
23 words
The electrochemical cell of claim 3 wherein the cathode collector comprises about 75% by weight acetylene black and about 25% by weight polytetrafluoroethylene.
Claim 10
Dependent Claim
23 words
The electrochemical cell of claim 2 wherein the cathode collector comprises about 90% by weight acetylene black and about 10% by weight polytetrafluoroethylene.
Claim 11
Dependent Claim
13 words
The electrochemical cell of claim 3 wherein said spring member is expanded nickel.
Claim 12
Dependent Claim
28 words
The electrochemical cell of claim 1 wherein the cathode solution contains at least one oxyhalide of an element of Group V or Group VI of the Periodic Table.
Claim 13
Dependent Claim
28 words
The electrochemical cell of claim 1 wherein the cathode solution contains at least one halide of an element of Group IV to Group VI of the Periodic Table.
Claim 14
Dependent Claim
19 words
The electrochemical cell of claim 1 wherein the anode is lithium and the active reducible cathode is sulfuryl chloride.
Claim 15
Dependent Claim
19 words
The electrochemical cell of claim 1 wherein the anode is lithium and the active reducible cathode is thionyl chloride.
Claim 16
Dependent Claim
19 words
The electrochemical cell of claim 1 wherein the anode is lithium and the active reducible cathode is phosphorus oxychloride.
Claim 17
Dependent Claim
19 words
The electrochemical cell of claim 1 wherein the anode is lithium and the active reducible cathode is sulfur monochloride.
Claim 18
Dependent Claim
19 words
The electrochemical cell of claim 1 wherein the anode is lithium and the active reducible cathode is sulfur monobromide.
Claim 19
Dependent Claim
19 words
The electrochemical cell of claim 1 wherein the anode is lithium and the active reducible cathode is selenium tetrafluoride.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-12 | 1980-04-12 | 1980-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-12 | 1984-04-12 | 1984-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-12 | 1988-04-12 | 1988-10-12 | $7700.00 | Window Closed / Lapsed |