Patent EP0339643A2 successfully refreshed from Google Patents.
Patent US4844992A successfully refreshed from Google Patents.
US4844992A
Expired / Lapsed
US
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Current connection device
Assignee: Siemens AG
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Filing: 1988-09-23
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Granted: 1989-07-04
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Expires: 2008-09-23
Abstract
Abstract A current connection device for use in batteries formed from a plurality of electrochemical cells wherein the electrodes in each cell are to have pressure cushions for isostatic compression and the cells are to operate at increased pressure levels. The device comprises two contact sheets welded to the sides of a metal plate, one to a side, the metal plate with its contact sheets being surrounded by an elastomer frame. A metallic current connection strip is coupled to the plate and extends through the frame to permit coupling the cells together.
Inventors
- 👤 Karl Strasser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:27
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/02; H01M8/0202; H01M8/0204; H01M8/0206; C; C25; C25B; C25B9/00; C25B9/60; C25B9/65; H01M8/0247; H01M8/0254; H01M8/24; H01M8/2465; H01M8/247; H01M8/0223; H01M8/0228; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12556; Y10T428/12562
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
82 words
A current connection device for use in electrochemical battery cells, particularly fuel cells, comprising metal plate means; contact sheet means welded to both sides of the plate means for providing pressure cushions to the cells; elastomer frame means surrounding the plate means and contact sheet means, completely sealing all edges on both sides of the plate means; and metal strip means attached to the plate means projecting through the frame means to outside the battery cell for providing a current connection point.
Claim 2
Dependent Claim
82 words
A current connection device for use in electrochemical battery cells, particularly fuel cells, comprising metal plate means; contact sheet means welded to both sides of the plate means for providing pressure cushions to the cells; elastomer frame means surrounding the plate means and contact sheet means, completely sealing all edges on both sides of the plate means; and metal strip means attached to the plate means projecting through the frame means to outside the battery cell for providing a current connection point.
Claim 3
Dependent Claim
16 words
The device of claim 1 wherein the plate means and strip means are comprised of copper.
Claim 4
Dependent Claim
16 words
The device of claim 1 wherein the contact sheet means are formed in a wave-like pattern.
References Cited (Backward Citations)
US3775184A
Cited
US4317864A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-07-03 | 1993-01-02 | 1993-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-03 | 1997-01-02 | 1997-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-03 | 2001-01-02 | 2001-07-04 | $7700.00 | Window Closed / Lapsed |