Patent US4756980A successfully refreshed from Google Patents.
US4756980A
Expired / Lapsed
US
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Battery with modular air cathode and anode cage
Assignee: Eltech Systems Corp
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Filing: 1987-06-22
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Granted: 1988-07-12
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Expires: 2007-06-22
Abstract
Abstract A battery assembly of the consumable metal anode type has now been constructed for ready assembly as well as disassembly. In a non-conductive and at least substantially inert cell body, space is provided for receiving an open-structured, non-consumable anode cage. The cage has an open top for facilitating insertion of an anode. A modular cathode is used, comprising a peripheral current conductor frame clamped about a grid reinforced air cathode in sheet form. The air cathode may be double gridded. The cathode frame can be sealed, during assembly, with electrolyte-resistant-sealant as well as with adhesive. The resulting cathode module can be assembled outside the cell body and readily inserted therein, or can later be easily removed therefrom.
Inventors
- 👤 Marilyn J. Niksa
- 👤 Gerald R. Pohto
- 👤 Leslie K. Lakatos
- 👤 Douglas J. Wheeler
- 👤 Andrew J. Niksa
- 👤 Thomas J. Schue
- 👤 Thomas R. Turk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:43
CPC Classifications
H; H01; H01M; H01M12/00; H01M12/04; H01M12/06; H01M12/065; H01M4/00; H01M4/86; H01M4/8605; H01M4/8626; H01M4/02; H01M2004/024; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
157 words
A unitized electrode module having a sheet electrode in a frame, said module being adapted for assembly external to a cell body and for subsequent containment within said cell body by mechanical means without metallurgical bonding, as well as being readily insertable and removable from said body, which module comprises: a porous sheet gas-diffusion electrode member of at least substantially planar shape a foraminous metal conductor member of at least substantially planar shape, said conductor member being pressed in electrically conductive contact against a planar face of said sheet electrode member a conductive metal frame around the periphery of both said sheet electrode member and conductor member, having at the frame edges a tight, electrically-conductive contact with said sheet electrode and conductor members, thereby providing a firm mechanical bond between said conductor member, sheet electrode member and frame; and an electrolyte resistant sealant between the edges of the metal frame for assisting in a liquid tight seal.
Claim 2
Dependent Claim
157 words
A unitized electrode module having a sheet electrode in a frame, said module being adapted for assembly external to a cell body and for subsequent containment within said cell body by mechanical means without metallurgical bonding, as well as being readily insertable and removable from said body, which module comprises: a porous sheet gas-diffusion electrode member of at least substantially planar shape a foraminous metal conductor member of at least substantially planar shape, said conductor member being pressed in electrically conductive contact against a planar face of said sheet electrode member a conductive metal frame around the periphery of both said sheet electrode member and conductor member, having at the frame edges a tight, electrically-conductive contact with said sheet electrode and conductor members, thereby providing a firm mechanical bond between said conductor member, sheet electrode member and frame; and an electrolyte resistant sealant between the edges of the metal frame for assisting in a liquid tight seal.
Claim 3
Dependent Claim
32 words
The electrode module of claim 1 wherein said electrode has a conductive metal frame U-shaped in cross-section with frame edges crimped around said peripheral edges of said sheet electrode and conductor members.
Claim 4
Dependent Claim
40 words
The electrode module of claim 1, wherein a first foraminous metal conductor member is pressed against a face of said sheet electrode member and a second foraminous conductor member is pressed against the obverse face of said sheet electrode member.
Claim 5
Dependent Claim
27 words
The electrode module of claim 1, wherein said metal frame contains breaks at corners of the frame and electrolyte-resistant adhesive assists in the sealing of said breaks.
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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) | 1991-07-12 | 1992-01-11 | 1992-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-12 | 1996-01-11 | 1996-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-12 | 2000-01-11 | 2000-07-12 | $7700.00 | Window Closed / Lapsed |