US3909295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkaline cell
Assignee: FDK Corp
•
Filing: 1974-05-17
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Granted: 1975-09-30
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Expires: 1994-05-17
Abstract
Abstract In an alkaline cell, an acid layer is provided to an inner surface of an anode terminal member where an alkaline electrolyte creeps by electrocapillary action. An acid in the acid layer reacts with the alkaline electrolyte to produce a salt.
Inventors
- 👤 Takashi Tsychida
- 👤 Kenichi Shinoda
- 👤 Teruyoshi Yasuda
- 👤 Takaoki Takeshima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:05
CPC Classifications
H; H01; H01M; H01M50/00; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
81 words
AN ALKALINE CELL COMPRISING AN ANODE ACTIVE MASS, A CATHODE ACTIVE MASS, AN ANODE TERMINAL MEMBER ELECTRICALLY CONNECTED TO SAID ANODE ACTIVE MASS, A CATHODE TERMINAL MEMBER ELECTRICALLY CONNECTED TO SAID CATHODE ACTIVE MASS, AND AN INSULATOR DISPOSED BETWEEN SAID TERMINAL MEMBERS AND AN ACID LAYER ON THE INNER SURFACE OF SAID ANODE TERMINAL MEMBER WITHIN HE PATH OF AN ALKALINE ELECTROLYTE WHICH CREEPS BY ELECTROCAPILLARY ACTION, SAID ACID LAYER CONTAINING ACID REACTIVE TO SAID ALKALINE ELECTROLYTE TO PRODUCE A SLAT.
Claim 2
Dependent Claim
81 words
AN ALKALINE CELL COMPRISING AN ANODE ACTIVE MASS, A CATHODE ACTIVE MASS, AN ANODE TERMINAL MEMBER ELECTRICALLY CONNECTED TO SAID ANODE ACTIVE MASS, A CATHODE TERMINAL MEMBER ELECTRICALLY CONNECTED TO SAID CATHODE ACTIVE MASS, AND AN INSULATOR DISPOSED BETWEEN SAID TERMINAL MEMBERS AND AN ACID LAYER ON THE INNER SURFACE OF SAID ANODE TERMINAL MEMBER WITHIN HE PATH OF AN ALKALINE ELECTROLYTE WHICH CREEPS BY ELECTROCAPILLARY ACTION, SAID ACID LAYER CONTAINING ACID REACTIVE TO SAID ALKALINE ELECTROLYTE TO PRODUCE A SLAT.
Claim 3
Dependent Claim
19 words
An alkaline cell as claimed in claim 1, wherein the acid in said acid layer is a weak acid.
Claim 4
Dependent Claim
34 words
An alkaline cell as claimed in claim 1, wherein said acid layer contains a viscous material mixed with said acid, said acid layer being attached to said inner surface of said anode terminal member.
Claim 5
Dependent Claim
75 words
An alkaline cell as claimed in claim 1, including a current collector extending into said anode active mass and wherein said insulator is disposed between adjacent marginal portions of said cathode and anode terminal members in tight fitting engagement with the inner surface of said anode terminal member and with said current collector extending centrally through said insulator, said acid layer being disposed between said insulator and said anode terminal member adjacent said current collector.
Claim 6
Dependent Claim
15 words
An alkaline cell as claimed in claim 3, wherein said viscous material is a vaseline.
References Cited (Backward Citations)
US2605299A
Cited
US3617386A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |