Patent US4374222A successfully refreshed from Google Patents.
US3048645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Primary dry cell
Assignee: Individual
•
Filing: 1961-01-17
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Granted: 1962-08-07
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Expires: 1981-01-17
Abstract
No abstract record available.
Inventors
- 👤 Ruben Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:03
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/04; H01M6/06; H01M6/08; H01M4/00; H01M4/02; H01M4/64; H01M4/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A PRIMARY DRY CELL IN CONDITION READY FOR THE INSTANEOUS DELIVERY OF AN ELECTRIC CURRENT TO A LOAD COMPRISING A CONTAINER OPEN AT ONE END, A MAGNESIUM ANODE IN SAID CONTAINER HAVING A POROUS SPACER LAYER THEREAROUND, CATHODE DEPOLARIZER MIX COMPACTED IN AND SUBSTANTIALLY COMPLETELY FILLING OUT THE INTERSPACE BETWEEN SAID SPACER LAYER AND THE INNER SURFACE OF SAID CONTAINER WITH ONE END OF THE ANODE EXTENDING THEREFROM, AN ELECTROLYTE ABSORBED IN SAID SPACER LAYER AND IN SAID MIX, CLOSURE MEANS FOR THE OPEN END OF SAID CONTAINER, AND ELECTRICAL TERMINAL MEANS FOR SAID ANODE AND FOR SAID CATHODE DEPOLARIZER MIX, SAID ANODE HAVING A VENTING CHANNEL EXTENDING LONGITUDINALLY THERETHROUGH AND THROUGH SAID CLOSURE MEANS INTO THE ATMOSPHERE ND ALSO HAVING APERTURES CONNECTING SAID CHANNEL TO THE ELECTROCHEMICALLY ACTIVE SPACER-CARRYING SURFACE OF THE ANODE WHEREBY GAS PRODUCED AT THE ACTIVE ANODE SURFACE MAY BE VENTED INTO THE ATMOSPHERE THROUGH SAID APERTURES AND SAID CHANNEL.
Claim 2
Dependent Claim
154 words
A PRIMARY DRY CELL IN CONDITION READY FOR THE INSTANEOUS DELIVERY OF AN ELECTRIC CURRENT TO A LOAD COMPRISING A CONTAINER OPEN AT ONE END, A MAGNESIUM ANODE IN SAID CONTAINER HAVING A POROUS SPACER LAYER THEREAROUND, CATHODE DEPOLARIZER MIX COMPACTED IN AND SUBSTANTIALLY COMPLETELY FILLING OUT THE INTERSPACE BETWEEN SAID SPACER LAYER AND THE INNER SURFACE OF SAID CONTAINER WITH ONE END OF THE ANODE EXTENDING THEREFROM, AN ELECTROLYTE ABSORBED IN SAID SPACER LAYER AND IN SAID MIX, CLOSURE MEANS FOR THE OPEN END OF SAID CONTAINER, AND ELECTRICAL TERMINAL MEANS FOR SAID ANODE AND FOR SAID CATHODE DEPOLARIZER MIX, SAID ANODE HAVING A VENTING CHANNEL EXTENDING LONGITUDINALLY THERETHROUGH AND THROUGH SAID CLOSURE MEANS INTO THE ATMOSPHERE ND ALSO HAVING APERTURES CONNECTING SAID CHANNEL TO THE ELECTROCHEMICALLY ACTIVE SPACER-CARRYING SURFACE OF THE ANODE WHEREBY GAS PRODUCED AT THE ACTIVE ANODE SURFACE MAY BE VENTED INTO THE ATMOSPHERE THROUGH SAID APERTURES AND SAID CHANNEL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-06 | 1966-02-05 | 1966-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-06 | 1970-02-05 | 1970-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-06 | 1974-02-05 | 1974-08-07 | $7700.00 | Window Closed / Lapsed |