US3647548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for electrode conversion
Assignee: Tudor AB
•
Filing: 1970-03-05
•
Granted: 1972-03-07
•
Expires: 1990-03-05
Abstract
Abstract Method and apparatus for passing a current of gas over the electrical contact between a conductor of direct current and the material to be electrochemically converted into an electrode for a lead-acid storage battery, the electrical contact being out of contact with the electrolyte.
Inventors
- 👤 John Lennart Andersson
- 👤 Ove Karl-Gustav Nilsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:09
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/14; H01M4/16; H01M4/22; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
26 words
The method of claim 1 wherein the level of the electrolyte in the vessel is below the region of contact between the conductor and the electrode.
Claim 2
Dependent Claim
24 words
The method of claim 1 wherein the gas is conveyed to the point of contact through ducts in the lid of the formation vessel.
Claim 3
Dependent Claim
30 words
The method of claim 1 wherein the formation vessel has a plurality of slots and including the steps of placing like polarity electrode forming material into alternative of the slots.
Claim 4
Dependent Claim
94 words
Apparatus comprising: a formation vessel for receiving material to be formed into an electrode for a lead-acid storage battery and an electrolyte; a lid for said forming vessel, said lid having a generally vertical aperture; a source of direct current; conductor means electrically connected to a source and further adapted to be inserted through said aperture into pressural engagement with said electrode; and duct means communicating with a gas source and said aperture whereby gas from said gas source may be directed at the region of engagement between said electrode and said conductor means.
Claim 5
Dependent Claim
17 words
The apparatus of claim 5 wherein said duct means includes a channel disposed interiorally of said lid.
Claim 6
Dependent Claim
17 words
The apparatus of claim 5 wherein said point of engagement is above the level of the electrolyte.
Claim 7
Dependent Claim
67 words
The apparatus of claim 5 wherein said vessel has a plurality of slots alternatively receiving material to be formed into positive and negative electrodes, wherein said conductor means includes means for engaging the material in each of said slots, and wherein said duct means includes means for simultaneously directing gas at the point of engagement between said conductor means and the material in each of said slots.
Claim 8
Dependent Claim
41 words
The apparatus of claim 8 wherein said duct means includes a passage disposed interiorally of said lid and wherein point of engagement of said conductor means with the material in each of said slots is above the level of the electrolyte.
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) | 1975-03-07 | 1975-09-06 | 1976-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-07 | 1979-09-06 | 1980-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-07 | 1983-09-06 | 1984-03-07 | $7700.00 | Window Closed / Lapsed |