← Back to Patent Explorer
US3748183A Expired / Lapsed US ⏱️ 0.0 years remaining

Reserve electric cell

Assignee: Duracell Inc USA
•
Filing: 1972-04-17
•
Granted: 1973-07-24
•
Expires: 1992-04-17
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A reserve type cell with a charged volume of electrolyte held confined in a closed cylindrical vial of rubber of rubber-like material, with means for puncturing a front top end wall of the rubber cylinder to permit the electrolyte to move out; and with a back-end pressure plate pressed by a compressed energy-storing spring that is restrained by the hydrostatic pressure of the full cylinder of electrolyte until the cylinder is punctured to release the electrolyte when cell activation is desired, whereupon the reaction pressure of the vial on the spring is relieved and the spring is able to compress the rubber vial to press the electrolyte out of the vial and into the operating cell space between the anode and the cathode. This invention relates to a reserve cell that is normally kept and stored in inactivated condition, by keeping the electrolyte isolated and separated from the anode and the cathode until there is a desire for its utilization, at which time the cell is then put into activated condition by releasing the electrolyte from its isolated condition and location, usually in a separate closed container, and then permitting the electrolyte to enter the space between the anode and the cathode to serve as an active electrolyte to activate the cell.

Inventors

  • 👤 J Zaleski

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 06:51
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/30; H01M6/36; H01M6/38

Claims Analysis

Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.

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) 1976-07-23 1977-01-22 1977-07-24 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-07-23 1981-01-22 1981-07-24 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-07-23 1985-01-22 1985-07-24 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag