Patent US4009053A successfully refreshed from Google Patents.
US4009053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wrapped-electrode battery
Assignee: VARTA Batterie AG
•
Filing: 1975-06-16
•
Granted: 1977-02-22
•
Expires: 1995-06-16
Abstract
Abstract A wrapped battery electrode is connected to the current take-off conductor by projections from radial slots in the conductor which engage the rim of the electrode. The projections are formed in the course of the punching operation which forms the slots.
Inventors
- 👤 Gerd Schenk
- 👤 Heinz Haake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:32
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/50; H01M50/531; H01M50/538; H01M50/533; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02P; Y02P70/00; Y02P70/50
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
144 words
In a storage battery having a wrapped electrode, a current take-off conductor contacting the rim of the eletrode, and a conductive lid contacting the conductor, the improvement wherein the current take-off conductor is a generally circular plate having a plurality of radial slots extending between a solid inner annular portion and a solid outer annular portion, the slots having confronting radial edges turned out of the plane of the plate and extending across consecutive turns of the wrapped electrode and engaging the adjacent rim of the electrode, the conductive lid being of annular shape and resting directly on the take-off conductor plate and extending radially from the inner to the outer solid portion of the plate, and means are provided for pressing the lid against the conductor plate through closure of the battery, whereby conductive connection is established between the plate and the lid.
Claim 2
Dependent Claim
144 words
In a storage battery having a wrapped electrode, a current take-off conductor contacting the rim of the eletrode, and a conductive lid contacting the conductor, the improvement wherein the current take-off conductor is a generally circular plate having a plurality of radial slots extending between a solid inner annular portion and a solid outer annular portion, the slots having confronting radial edges turned out of the plane of the plate and extending across consecutive turns of the wrapped electrode and engaging the adjacent rim of the electrode, the conductive lid being of annular shape and resting directly on the take-off conductor plate and extending radially from the inner to the outer solid portion of the plate, and means are provided for pressing the lid against the conductor plate through closure of the battery, whereby conductive connection is established between the plate and the lid.
Claim 3
Dependent Claim
25 words
The battery of claim 1 having a cell connector, and an elastic seal between the cell connector and the inner edge of the annular lid.
Claim 4
Dependent Claim
22 words
The battery of claim 1 wherein the take-off conductor plate has an offset outer rim forming a seat for the lid plate.
References Cited (Backward Citations)
US3484301A
Cited
US3503806A
Cited
US3732124A
Cited
US3790408A
Cited
US3836400A
Cited
US3837925A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-02-22 | 1980-08-23 | 1981-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-22 | 1984-08-23 | 1985-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-22 | 1988-08-23 | 1989-02-22 | $7700.00 | Window Closed / Lapsed |