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US3846176A Expired / Lapsed US ⏱️ 0.0 years remaining

Fuel cell encased in molded plastic material

Assignee: Siemens AG
•
Filing: 1970-01-19
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Granted: 1974-11-05
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Expires: 1990-01-19
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Abstract

Abstract 1. Fuel cell comprising a substantially planar support frame forming a chamber for receiving liquid electrolyte therein and, superposed on each side of said support frame, a substantially planar diaphragm member, a substantially planar electrode, a substantially planar cover plate member, and a substantially planar spacer sandwiched between and completely covered by one of said diaphragm members and said cover plate member, said substantially planar spacer having voids therein thereby forming with said electrode and cover plate a chamber for receiving reactant gas therein, said diaphragm member having edges extending beyond the edges of the electrode and the spacer, a bonding agent cementing the edges of each of said diaphragm members to each other so as to enclose at least one of the chambers therewithin, a layer of additional bonding agent disposed across the edges of at least one of the other of said chamber for sealing the same, and a casing of molded plastic material surrounding the superposed components.

Inventors

  • 👤 D Kuehl

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 19:32
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/24; H01M8/2404; H01M8/2455; H01M8/2459; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 159 words
Fuel cell comprising a substantially planar support frame forming a chamber for receiving liquid electrolyte therein and, superposed on each side of said support frame, a substantially planar diaphragm member, a substantially planar electrode, a substantially planar cover plate member, and a substantially planar spacer sandwiched between and completely covered by one of said diaphragm members and said cover plate member, said substantially planar spacer having voids therein thereby forming with said electrode and cover plate a chamber for receiving reactant gas therein, said diaphragm member having edges extending beyond the edges of the electrode and the spacer, a bonding agent cementing the edges of each of said diaphragm members to each other so as to enclose at least one of the chambers therewithin, a layer of additional bonding agent disposed across the edges of at least one of the other of said chamber for sealing the same, and a casing of molded plastic material surrounding the superposed components.
Claim 2
Dependent Claim 159 words
Fuel cell comprising a substantially planar support frame forming a chamber for receiving liquid electrolyte therein and, superposed on each side of said support frame, a substantially planar diaphragm member, a substantially planar electrode, a substantially planar cover plate member, and a substantially planar spacer sandwiched between and completely covered by one of said diaphragm members and said cover plate member, said substantially planar spacer having voids therein thereby forming with said electrode and cover plate a chamber for receiving reactant gas therein, said diaphragm member having edges extending beyond the edges of the electrode and the spacer, a bonding agent cementing the edges of each of said diaphragm members to each other so as to enclose at least one of the chambers therewithin, a layer of additional bonding agent disposed across the edges of at least one of the other of said chamber for sealing the same, and a casing of molded plastic material surrounding the superposed components.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-11-04 1978-05-06 1978-11-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-11-04 1982-05-06 1982-11-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-11-04 1986-05-06 1986-11-05 $7700.00 Window Closed / Lapsed

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