US3615859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leclanche dry cell with thick wall paste separator
Assignee: Edgewell Personal Care Brands LLC
•
Filing: 1969-06-05
•
Granted: 1971-10-26
•
Expires: 1989-06-05
Abstract
Abstract A substantial reduction in the formation and movement of spew in a Leclanche dry cell is obtained by the provision of a thick wall gelatinous electrolyte past separator interposed between the consumable zinc anode and the cathode mix cake without seriously reducing the service life of the cell.
Inventors
- 👤 Brooke Schumm Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:48
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/04; H01M6/06; H01M6/08
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
12 words
Z 1.3(0.141D+0.002) wherein D maximum USASI cell diameter for standard dry cell;
Claim 2
Dependent Claim
23 words
A D-size Leclanche dry cell in accordance with claim 1 wherein the minimum wall thickness of said gelatinous paste separator is 0.123 inch.
Claim 3
Dependent Claim
23 words
A C-size Leclanche dry cell in accordance with claim 1 wherein the minimum wall thickness of said gelatinous paste separator is 0.101 inch.
Claim 4
Dependent Claim
9 words
RII RI-Zwherein RI inside radius of zinc anode; and
Claim 5
Dependent Claim
10 words
Ro 2 RII2-Re2 wherein Re radius of central electrode rod.
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) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |