US4451542A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cell with gasket comprising glass beads
Assignee: Maxell Ltd
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Filing: 1981-12-08
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Granted: 1984-05-29
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Expires: 2001-12-08
Abstract
Abstract A cell comprising a positive can and a negative collector fitted in the opening of the positive can, a gasket being set in the space between the positive can and the negative collector to prevent the leakage of liquid material from the cell, characterized in that the gasket is made of a synthetic resin composition comprising glass beads. The cell is much improved in its leak-proof properties.
Inventors
- 👤 Osamu Ishida
- 👤 Yoshio Uetani
- 👤 Seiichi Matsushima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:13
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/10; H01M50/183; H01M50/186; H01M50/184; H01M50/19; H01M50/193; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10S; Y10S277/00; Y10S277/935; Y10S277/936; Y10S277/937
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
121 words
A cell comprising in combination: a positive can having an opening defined by a lateral circumferential edge for receiving an electrolyte, a negative collector having a peripheral portion fitted in said opening of said positive can defining a space between said peripheral portion and said lateral circumferential edge of said positive can, and a gasket means set in said space between said lateral edge of said positive can and said peripheral portion of said negative collector so as to prevent the leakage of said electrolyte from said cell, said gasket comprising a synthetic resin composition including galss beads having an average particle size of 2 to 60 μm in an amount of from 5 to 50% by weight of said composition.
Claim 2
Dependent Claim
121 words
A cell comprising in combination: a positive can having an opening defined by a lateral circumferential edge for receiving an electrolyte, a negative collector having a peripheral portion fitted in said opening of said positive can defining a space between said peripheral portion and said lateral circumferential edge of said positive can, and a gasket means set in said space between said lateral edge of said positive can and said peripheral portion of said negative collector so as to prevent the leakage of said electrolyte from said cell, said gasket comprising a synthetic resin composition including galss beads having an average particle size of 2 to 60 μm in an amount of from 5 to 50% by weight of said composition.
Claim 3
Dependent Claim
20 words
The cell according to claim 1, wherein said cell is an alkaline cell and said sythentic resin is a polyamide.
Claim 4
Dependent Claim
11 words
A cell according to claim 2, wherein said polyamide is nylon.
Claim 5
Dependent Claim
13 words
The cell according to claim 2, wherein said electrolyte is an alkaline electrolyte.
Claim 6
Dependent Claim
20 words
The cell according to claim 1, wherein said cell is an organic electrolyte cell and said synthetic is a polyolefin.
Claim 7
Dependent Claim
11 words
The cell according to claim 5, wherein said polyolefin is polypropylene.
Claim 8
Dependent Claim
13 words
The cell according to claim 5, wherein said electrolyte is an organic electrolyte.
Claim 9
Dependent Claim
20 words
The cell according to claim 1, wherein the content of said glass beads is from 20 to 40% by weight.
Claim 10
Dependent Claim
16 words
The cell according to claim 1, wherein said glass beads are treated with a coupling agent.
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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) | 1987-05-29 | 1987-11-28 | 1988-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-29 | 1991-11-28 | 1992-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-29 | 1995-11-28 | 1996-05-29 | $7700.00 | Window Closed / Lapsed |