Patent US3219487A successfully refreshed from Google Patents.
US3219487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perforated contact member for voltaic cell electrodes
Assignee: Servel Inc
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Filing: 1962-06-06
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Granted: 1965-11-23
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Expires: 1982-06-06
Abstract
No abstract record available.
Inventors
- 👤 Philip E Krouse
- 👤 Willard J Eigsti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:34
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/64; H01M4/70; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A VOLTAIC KCELL COMPRISING AN ENCLOSURE, POSITIVE AND NEGATIVE TERMINALS, A TUBULAR DEPOLARIZER MEMBER CONTAINED WITHIN SAID ENCLOSURE, A TUBULAR METALLIC ANODE COAXIALLY ARRAANGED WITHIN SAID DEPOLARIZER MEMBER, A THIN ELECTROLYTE-PERMEABLE BARRIER INTERPOSED BETWEEN SAID ANODE AND SAID DEPOLARIZER MEMBER, A THIN-WALLED METALLIC TUBULAR CONTACT MEMBER SPLIT ALONG ONE SIDE AND PERFORATED OVER A SUBSTANTIAL PORTION OF ITS AREA COAXIALLY ARRANGED WITHIN SAID ANODE IN ELECTRICAL CONTACT ENGAGEMENT THEREWITH, ONE END OF SAID CONTACT MEMBER, BEING ELECTRICALLY CONNECTED TO SAID NEGATIVE TERMINAL, AN ELECTROLYTE IMPREGNATED INITIALLY SWELLABLE BIBULOUS MATERIAL FILLING THE SPACE WITHIN SAID CONTACT MEMBER, SAID BIBULOUS MATERIAL BEING UNDER PRESSURE DUE TO SWELLING BY ABSORPTION OF ELECTROLYTE WHEREBY TO PROVIDE A RADIAL CONTACT FORCE BIASING SAID CONTACT MEMBER OUTWARDLY AGAINST THE INNER SURFACE OF SAID ANODE.
Claim 2
Dependent Claim
128 words
A VOLTAIC KCELL COMPRISING AN ENCLOSURE, POSITIVE AND NEGATIVE TERMINALS, A TUBULAR DEPOLARIZER MEMBER CONTAINED WITHIN SAID ENCLOSURE, A TUBULAR METALLIC ANODE COAXIALLY ARRAANGED WITHIN SAID DEPOLARIZER MEMBER, A THIN ELECTROLYTE-PERMEABLE BARRIER INTERPOSED BETWEEN SAID ANODE AND SAID DEPOLARIZER MEMBER, A THIN-WALLED METALLIC TUBULAR CONTACT MEMBER SPLIT ALONG ONE SIDE AND PERFORATED OVER A SUBSTANTIAL PORTION OF ITS AREA COAXIALLY ARRANGED WITHIN SAID ANODE IN ELECTRICAL CONTACT ENGAGEMENT THEREWITH, ONE END OF SAID CONTACT MEMBER, BEING ELECTRICALLY CONNECTED TO SAID NEGATIVE TERMINAL, AN ELECTROLYTE IMPREGNATED INITIALLY SWELLABLE BIBULOUS MATERIAL FILLING THE SPACE WITHIN SAID CONTACT MEMBER, SAID BIBULOUS MATERIAL BEING UNDER PRESSURE DUE TO SWELLING BY ABSORPTION OF ELECTROLYTE WHEREBY TO PROVIDE A RADIAL CONTACT FORCE BIASING SAID CONTACT MEMBER OUTWARDLY AGAINST THE INNER SURFACE OF SAID ANODE.
References Cited (Backward Citations)
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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) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |