US2831046A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Layer type dry batteries
Assignee: Burndept Ltd
•
Filing: 1955-09-07
•
Granted: 1958-04-15
•
Expires: 1975-09-07
Abstract
No abstract record available.
Inventors
- 👤 Linton Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:54
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/42; H01M6/46; H01M6/48; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49108
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A METHOD OF MAKING A DRY BATTERY WHICH COMPRISES THE STEPS OF STAMPING TWO STEEL DISCS OF THE SAME DIAMETER, MAKING AT LEAST ONE OF THEM CONVEX, COATING THE CONVEX SURFACE OF AT LEAST ONE THEM WITH POLYTHENE LEAVING THE SUMMIT OF THE CONVEXITY BARE, WELDING SAID DISCS TOGETHER AT THEIR MIDDLE, SUBJECTING THEM TO HEAT AND PRESSURE IN A MOULD TO CAUSE THE POLYTHENE TO ASSUME CUP FORM, COMPLETING THE BATTERY UNIT BY ASSEMBLING IN THE POLYTHENE MOULDING AN ANODE ELEMENT, A CATHODE ELEMENT AND AN ELECTROLYTE-HOLDING ELEMENT, AND ASSEMBLING A PLURALITY OF SUCH UNITS IN A PILE.
Claim 2
Independent Claim
99 words
A METHOD OF MAKING A DRY BATTERY WHICH COMPRISES THE STEPS OF STAMPING TWO STEEL DISCS OF THE SAME DIAMETER, MAKING AT LEAST ONE OF THEM CONVEX, COATING THE CONVEX SURFACE OF AT LEAST ONE THEM WITH POLYTHENE LEAVING THE SUMMIT OF THE CONVEXITY BARE, WELDING SAID DISCS TOGETHER AT THEIR MIDDLE, SUBJECTING THEM TO HEAT AND PRESSURE IN A MOULD TO CAUSE THE POLYTHENE TO ASSUME CUP FORM, COMPLETING THE BATTERY UNIT BY ASSEMBLING IN THE POLYTHENE MOULDING AN ANODE ELEMENT, A CATHODE ELEMENT AND AN ELECTROLYTE-HOLDING ELEMENT, AND ASSEMBLING A PLURALITY OF SUCH UNITS IN A PILE.
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) | 1961-04-14 | 1961-10-14 | 1962-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-14 | 1965-10-14 | 1966-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-14 | 1969-10-14 | 1970-04-15 | $7700.00 | Window Closed / Lapsed |