US4250235A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Battery electrode structure
Assignee: The AT&T MVPD Group LLC
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Filing: 1979-08-16
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Granted: 1981-02-10
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Expires: 1999-08-16
Abstract
Abstract Substrate for nickel hydrogen battery electrode is etched from nickel sheet metal to provide inner and outer rims 54, 56 for self centering, a tab 62 on which a lead can be welded and properly distributed openings through conductors for optimum ion flow and electric conduction.
Inventors
- 👤 Preston S. DuPont
- 👤 Howard H. Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:05
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/64; H01M4/70; H01M4/80; H01M10/00; H01M10/34; H01M10/345; H01M4/86; H01M50/00; H01M50/50; H01M50/531; H01M50/534; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
85 words
An electro-mechanical substrate for a nickel hydrogen battery electrode comprising: a nickel sheet metal electrode, said electrode being generally circular and having an inner rim and an outer rim, substantially radial conductors extending between said inner and outer rims and being of greater cross section adjacent said inner rim, said electrode substrate having a plurality of openings between said inner and outer rims and between said radial conductors to form a grid mesh, the edges of said rims and said conductors having an etched surface.
Claim 2
Dependent Claim
85 words
An electro-mechanical substrate for a nickel hydrogen battery electrode comprising: a nickel sheet metal electrode, said electrode being generally circular and having an inner rim and an outer rim, substantially radial conductors extending between said inner and outer rims and being of greater cross section adjacent said inner rim, said electrode substrate having a plurality of openings between said inner and outer rims and between said radial conductors to form a grid mesh, the edges of said rims and said conductors having an etched surface.
Claim 3
Dependent Claim
23 words
The substrate of claim 1 wherein a solid metal tab extends inwardly from said inner rim for the attachment of an electric lead.
Claim 4
Dependent Claim
14 words
The substrate of claim 2 wherein an electric lead is welded to said tab.
Claim 5
Dependent Claim
25 words
A positive electrode for a nickel-hydrogen battery wherein said substrate of claim 1 has a face thereon and porous nickel is sintered onto said face.
Claim 6
Dependent Claim
24 words
The positive electrode of claim 4 wherein nickel-hydroxide is positioned in the pores of said sintered nickel on said face of said nickel substrate.
Claim 7
Dependent Claim
28 words
A negative electrode for a nickel-hydrogen battery wherein said substrate of claim 1 has first and second faces and has porous polytetrafluoroethylene attached to the first face thereof.
Claim 8
Dependent Claim
26 words
The negative electrode of claim 6 wherein said porous polytetrafluoroethylene is a porous polytetrafluoroethylene sheet which is adhesively attached to said first face of said substrate.
Claim 9
Dependent Claim
21 words
The negative electrode of claim 6 wherein said second face of said nickel substrate as a platinum powder-polytetrafluoroethylene mixture sintered thereon.
Claim 10
Dependent Claim
26 words
The negative electrode of claim 8 wherein said porous polytetrafluoroethylene is a porous polytetrafluoroethylene sheet which is adhesively attached to said first face of said substrate.
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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) | 1984-02-10 | 1984-08-11 | 1985-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-10 | 1988-08-11 | 1989-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-10 | 1992-08-11 | 1993-02-10 | $7700.00 | Window Closed / Lapsed |