US4025701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lead storage battery electrode and method
Assignee: Tudor AB
•
Filing: 1975-04-15
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Granted: 1977-05-24
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Expires: 1995-04-15
Abstract
Abstract Tube plate type electrode for a storage battery where the metal rod of said tube is held centrally in a surrounding sheath by spacing fins. The surface of the spacing fins is coated with a lacquer to reduce the peak effect caused by high current density to prolong the life of the tube sheath.
Inventors
- 👤 Erik G. Sundberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:52
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/64; H01M4/70; H01M4/76; H01M4/765; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
91 words
An electrode plate for a lead-acid storage battery having alternate electrodes of positive and negative polarity, said plate comprising a plurality of conductive rods connected at opposite ends in support members, each rod being surrounded by a tubular body of active material and the active material surrounded by a sheath, said rods each having a plurality of integrally formed spacing fins of the same material as the rods are made of, and a coating of electrical insulating material on those spacing fins which are adjacent to an electrode of opposite polarity.
Claim 2
Dependent Claim
91 words
An electrode plate for a lead-acid storage battery having alternate electrodes of positive and negative polarity, said plate comprising a plurality of conductive rods connected at opposite ends in support members, each rod being surrounded by a tubular body of active material and the active material surrounded by a sheath, said rods each having a plurality of integrally formed spacing fins of the same material as the rods are made of, and a coating of electrical insulating material on those spacing fins which are adjacent to an electrode of opposite polarity.
Claim 3
Dependent Claim
28 words
An electrode plate as defined in claim 1 wherein the conductive material is lead or a lead alloy, and the electrical insulating material is an electrolyte resistant lacquer.
Claim 4
Independent Claim
87 words
A method of fabricating a tube plate electrode for use in a lead-acid storage battery comprising: providing a plurality of lead rods that are formed to have as an integral part thereof a plurality of spacing fins; coating the spacing fins with a thin layer of electrical insulating material; mounting each rod in a tubular sheath and filling the space between the tube and the sheath with active material; and thereafter mounting said rods with their sheaths filled with active material in upper and lower frame members.
Claim 5
Independent Claim
87 words
A method of fabricating a tube plate electrode for use in a lead-acid storage battery comprising: providing a plurality of lead rods that are formed to have as an integral part thereof a plurality of spacing fins; coating the spacing fins with a thin layer of electrical insulating material; mounting each rod in a tubular sheath and filling the space between the tube and the sheath with active material; and thereafter mounting said rods with their sheaths filled with active material in upper and lower frame members.
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) | 1980-05-23 | 1980-11-22 | 1981-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-23 | 1984-11-22 | 1985-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-23 | 1988-11-22 | 1989-05-24 | $7700.00 | Window Closed / Lapsed |