US4282293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seals for electrochemical cells
Assignee: Edgewell Personal Care Brands LLC
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Filing: 1980-06-24
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Granted: 1981-08-04
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Expires: 2000-06-24
Abstract
Abstract An improved seal for alkaline cells comprising a gasket having a coated layer of a polyamide, an epoxy resin, asphalt or a cured epoxy-polyamide resin and a film of a substituted organosilane disposed and compressed between the interface of the cell's cover and the coated gasket of the cell thereby providing a fluid-tight seal therebetween.
Inventors
- 👤 Johannes A. van Lier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:56
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/10; H01M50/183; H01M50/19; H01M50/193; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
107 words
A sealed electrochemical cell comprising a cathodic material, an anodic material and an alkaline electrolyte housed in a cupped container sealed at its open end by a closure means, said closure means comprising a cover and a nonconductive gasket having at least one layer selected from the group consisting of a polyamide, an epoxy resin, asphalt and a cured epoxypolyamide resin, said coated gasket disposed and compressed between the interface of the cover and the container; the improvement being a film of a substituted organosilane disposed on the edge surface of the cover between the cover and the coated gasket interface thereby forming a fluid-tight seal therebetween.
Claim 2
Dependent Claim
107 words
A sealed electrochemical cell comprising a cathodic material, an anodic material and an alkaline electrolyte housed in a cupped container sealed at its open end by a closure means, said closure means comprising a cover and a nonconductive gasket having at least one layer selected from the group consisting of a polyamide, an epoxy resin, asphalt and a cured epoxypolyamide resin, said coated gasket disposed and compressed between the interface of the cover and the container; the improvement being a film of a substituted organosilane disposed on the edge surface of the cover between the cover and the coated gasket interface thereby forming a fluid-tight seal therebetween.
Claim 3
Dependent Claim
22 words
The sealed electrochemical cell of claim 1 wherein the substituted organosilane film is between about 10 A to about 100 A thick.
Claim 4
Dependent Claim
22 words
The sealed electrochemical cell of claim 1 wherein the substituted organosilane film is between about 20 A and about 50 A thick.
Claim 5
Dependent Claim
13 words
The sealed electrochemical cell of claim 1 wherein the substituted organosilane is gamma-aminopropyltriethoxysilane.
Claim 6
Dependent Claim
13 words
The sealed electrochemical cell of claim 1 wherein the substituted organosilane is beta-(3,4-epoxycyclohexyl)ethyltrimethoxysilane.
Claim 7
Dependent Claim
13 words
The sealed electrochemical cell of claim 1 wherein the substituted organosilane is gamma-glycidoxypropyltrimethoxysilane.
Claim 8
Dependent Claim
35 words
The sealed electrochemical cell of claim 1, 2 or 3 wherein the gasket is selected from the group consisting of nylon, polypropylene, ethylene-tetrafluoroethylene copolymer and high density polyethylene and the layer is a polyamide layer.
Claim 9
Dependent Claim
33 words
The sealed electrochemical cell of claim 1 wherein the gasket is nylon, the layer is a fatty polyamide and the substituted organisilane is selected from the group consisting of gamma-aminopropyltriethoxysilane, beta-(3,4-epoxycyclohexyl)ethyltrimethoxysilane and gamma-glycidoxypropyltrimethoxysilane.
Claim 10
Dependent Claim
45 words
The sealed electrochemical cell of claim 1, 2, 3, or 8 wherein the electrolyte is an aqueous potassium hydroxide or sodium hydroxide solution, the layer is a polyamide and the film of substituted organosilane is selected from the group consisting of gamma-aminopropyltriethoxysilane, beta-(3,4-epoxycyclohexyl)ethyltrimethoxysilane and gamma-glycidoxypropyltrimethoxysilane.
Claim 11
Dependent Claim
45 words
The sealed electrochemical cell of claim 1, 2, 3 or 8 wherein the electrolyte is an aqueous potassium hydroxide solution, the gasket is nylon, the layer comprises a fatty polyamide and the substituted organosilane is selected from the group consisting of gamma-aminopropyltriethoxysilane, beta-(3,4-epoxycyclohexyl)ethyltrimethoxysilane and gamma-glycidoxypropyltrimethoxysilane.
References Cited (Backward Citations)
US3713896A
Cited
US3922178A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-08-03 | 1985-02-02 | 1985-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-03 | 1989-02-02 | 1989-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-03 | 1993-02-02 | 1993-08-04 | $7700.00 | Window Closed / Lapsed |