US4005246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reserve-type cell
Assignee: Whittaker Technical Products Inc
•
Filing: 1973-02-20
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Granted: 1977-01-25
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Expires: 1993-02-20
Abstract
Abstract An improved reserve-type cell is provided which comprises, in combination, a pair of spaced electrodes, a separator between said electrodes, electrolyte storage means comprising bibulous material such as cotton wadding in a cavity disposed in contact with and behind one of the electrodes (which is porous) and out of contact with the other of the electrodes, and electrolyte disposed in the wadding. The electrolyte can be drawn from the storage space through the porous electrode and into contact with the other of the electrodes to activate the cell. Preferably, the electrolyte is in dry form dissolvable in water to activate the cell when needed. Evaporating of the water shuts down the cell until further introduction of water.
Inventors
- 👤 Stephen F. Schiffer
- 👤 Renato DiPasquale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:56
CPC Classifications
H; H01; H01M; H01M12/00; H01M12/04; H01M12/06; H01M6/00; H01M6/30; H01M6/32; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
17 words
An improved reserve-type electrochemical cell, said cell comprising, in combination: a. a pair of closely spaced electrodes;
Claim 2
Dependent Claim
17 words
An improved reserve-type electrochemical cell, said cell comprising, in combination: a. a pair of closely spaced electrodes;
Claim 3
Dependent Claim
109 words
b. a thin inert separator disposed between said electrodes; c. electrolyte storage means comprising a storage space containing bibulous material disposed behind and in direct contact with one of said electrodes along the length thereof and out of contact with the other of said electrodes; and d. dry electrolyte disposed on said bibulous material, said one electrode in contact with said storage means containing said electrolyte being porous, whereby electrolyte in said storage means when dissolved is freely and directly transferable in liquid form through said one electrode into contact with the other of said electrodes along the length hereof for activation and maintenance of activity of said cell.
Claim 4
Dependent Claim
109 words
b. a thin inert separator disposed between said electrodes; c. electrolyte storage means comprising a storage space containing bibulous material disposed behind and in direct contact with one of said electrodes along the length thereof and out of contact with the other of said electrodes; and d. dry electrolyte disposed on said bibulous material, said one electrode in contact with said storage means containing said electrolyte being porous, whereby electrolyte in said storage means when dissolved is freely and directly transferable in liquid form through said one electrode into contact with the other of said electrodes along the length hereof for activation and maintenance of activity of said cell.
Claim 5
Dependent Claim
12 words
The improved cell of claim 1 wherein said material comprises fibrous wadding.
Claim 6
Dependent Claim
21 words
The improved cell of claim 1 wherein said one electrode is perforated through which said electrode is drawn by capillary action.
Claim 7
Dependent Claim
33 words
The improved cell of claim 1 wherein said electrodes and separator are disposed concentrically within an outer protective shell and wherein said shell defines an opening in communication with said electrolyte storage space.
Claim 8
Dependent Claim
15 words
The improved cell of claim 1 wherein at least one of said electrodes is consumable.
Claim 9
Dependent Claim
11 words
The improved cell of claim 2 wherein said wadding is cellulosic.
Claim 10
Dependent Claim
22 words
The improved cell of claim 4 wherein said storage space is a central cavity in said shell concentric with said one electrode.
Claim 11
Dependent Claim
36 words
The improved cell of claim 5 wherein said dry electrolyte is consumable and is in said cell in a concentration in excess of that required for use of in said cell until said electrode is consumed.
Claim 12
Dependent Claim
26 words
The improved cell of claim 7 wheein said dry electrolyte is a salt and wherein said opening of said shell is removably plugged with a closure.
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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) | 1980-01-25 | 1980-07-26 | 1981-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-25 | 1984-07-26 | 1985-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-25 | 1988-07-26 | 1989-01-25 | $7700.00 | Window Closed / Lapsed |