US3790408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Battery coil construction
Assignee: Gates Energy Products Inc
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Filing: 1972-05-30
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Granted: 1974-02-05
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Expires: 1992-05-30
Abstract
Abstract An improved cell construction is utilized in which a ruffled edge of the negative plate extends longitudinally beyond the edge of the positive plate at one end of the battery coil and a ruffled edge of the positive plate extends longitudinally beyond the edge of the negative plate at the opposite end of the battery coil. Terminal straps are attached to the extending ruffled edges of the respective plates.
Inventors
- 👤 G Cromer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:45
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/64; H01M4/70; H01M4/78; H01M50/00; H01M50/50; H01M50/531; H01M50/538; H01M6/00; H01M6/04; H01M6/06; H01M6/10
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
75 words
An improved elongated cell plate, having two opposed edge portions in the direction of elongation, for incorporation in a battery coil comprising a nonruffled main portion containing active material and one of said edge portions having a ruffled end relatively free of active material, said ruffled end of said one edge portion when the plate is in coiled condition defining a plane substantially perpendicular to the axis of a battery coil incorporating the cell plate.
Claim 2
Dependent Claim
75 words
An improved elongated cell plate, having two opposed edge portions in the direction of elongation, for incorporation in a battery coil comprising a nonruffled main portion containing active material and one of said edge portions having a ruffled end relatively free of active material, said ruffled end of said one edge portion when the plate is in coiled condition defining a plane substantially perpendicular to the axis of a battery coil incorporating the cell plate.
Claim 3
Dependent Claim
43 words
The cell plate of claim 1 wherein the overall width from peak to peak of said ruffled end of said one edge portion of each plate is not greater than the thickness of the non-ruffled main portion of each plate containing active material.
Claim 4
Dependent Claim
15 words
The cell plate of claim 1 wherein the other of said edge portions is nonruffled.
Claim 5
Dependent Claim
15 words
The cell plate of claim 2 wherein the other of said edge portions is nonruffled.
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) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |