Patent US4374909A successfully refreshed from Google Patents.
US4374909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seals for electrochemical cells
Assignee: Edgewell Personal Care Brands LLC
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Filing: 1981-06-26
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Granted: 1983-02-22
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Expires: 2001-06-26
Abstract
Abstract A sealed electrochemical cell having a secondary seal comprising a cylindrical sleeve disposed and secured around the upstanding wall of the cell's container, a second cover disposed on top of the cell's primary cover and a gasket compressed between the cylindrical ring and the cover forming said secondary seal.
Inventors
- 👤 Gary R. Tucholski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:43
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/10; H01M50/147; H01M50/166; H01M50/171; H01M50/167; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
139 words
A sealed electrochemical cell comprising a cathode material, an anodic material and an electrolyte housed in a cylindrical container having an upstanding wall and being sealed at its open end by a closure means which comprises a first cover and a first nonconductive gasket, said nonconductive gasket compressed between the interface of the first cover and the container providing a primary seal, the improvement wherein a second cover is disposed over the first cover, an outer cylindrical member open at both ends is disposed around the upstanding cylindrical wall of the container, and a second gasket is disposed and compressed between the interface of the upper portion of the cylindrical member and the second cover and said second gasket is further disposed and compressed between the second cover and the container thereby forming a second seal for the cell.
Claim 2
Dependent Claim
139 words
A sealed electrochemical cell comprising a cathode material, an anodic material and an electrolyte housed in a cylindrical container having an upstanding wall and being sealed at its open end by a closure means which comprises a first cover and a first nonconductive gasket, said nonconductive gasket compressed between the interface of the first cover and the container providing a primary seal, the improvement wherein a second cover is disposed over the first cover, an outer cylindrical member open at both ends is disposed around the upstanding cylindrical wall of the container, and a second gasket is disposed and compressed between the interface of the upper portion of the cylindrical member and the second cover and said second gasket is further disposed and compressed between the second cover and the container thereby forming a second seal for the cell.
Claim 3
Dependent Claim
21 words
The sealed electrochemical cell of claim 1 wherein the second cover is made of the same material as the first cover.
Claim 4
Dependent Claim
21 words
The sealed electrochemical cell of claim 1 wherein the second cover is made of a different material than the first cover.
Claim 5
Dependent Claim
23 words
The sealed electrochemical cell of claim 1, 2 or 3 wherein the cylindrical member is made of the same material as the container.
Claim 6
Dependent Claim
23 words
The sealed electrochemical cell of claim 1, 2 or 3 wherein the cylindrical member is made of a different material than the container.
Claim 7
Dependent Claim
21 words
The sealed electrochemical cell of claim 1 wherein the second gasket is made of the same material as the first gasket.
Claim 8
Dependent Claim
24 words
The sealed electrochemical cell of claim 1 wherein the second gasket is made of a material different than the material of the first gasket.
Claim 9
Dependent Claim
18 words
The sealed electrochemical cell of claim 1, 2, 3, 6 or 7 wherein the cylindrical member is nonconductive.
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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) | 1986-02-21 | 1986-08-23 | 1987-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-02-21 | 1990-08-23 | 1991-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-02-21 | 1994-08-23 | 1995-02-22 | $7700.00 | Window Closed / Lapsed |