US3895960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diffusion-bonded battery electrode plaques
Assignee: Westinghouse Electric Corp
•
Filing: 1970-08-27
•
Granted: 1975-07-22
•
Expires: 1990-08-27
Abstract
Abstract A flexible electrode plaque having 75 to 95 per cent porosity is made from at least one sheet of diffusion bonded iron fibers, 0.0002 to 0.015 inches in diameter, having an attached metal tab lead. A uniform coating of nickel metal is plated on the iron fibers, after the fibers are bonded together.
Inventors
- 👤 Jack T Brown
- 👤 William Feduska
- 👤 Wesley L Bradford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:52
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/64; H01M4/70; H01M4/72; H01M4/74; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
8 words
A METHOD OF PRODUCING BATTERY ELECTRODE PLAQUES BY:
Claim 2
Independent Claim
8 words
A METHOD OF PRODUCING BATTERY ELECTRODE PLAQUES BY:
Claim 3
Dependent Claim
30 words
PROVIDING A SHEET OF INTERMINGLED RELATIVELY SMOOTH UNOXIDIZED METALLIC FIBERS BEING ESSENTIALLY FREE OF CLEFTS AND PROTUBERANCES, SAID FIBERS HAVING A DIAMETER OF ABOUT 0.0002 TO 0.015 INCHES, AND THEN
Claim 4
Dependent Claim
30 words
PROVIDING A SHEET OF INTERMINGLED RELATIVELY SMOOTH UNOXIDIZED METALLIC FIBERS BEING ESSENTIALLY FREE OF CLEFTS AND PROTUBERANCES, SAID FIBERS HAVING A DIAMETER OF ABOUT 0.0002 TO 0.015 INCHES, AND THEN
Claim 5
Dependent Claim
9 words
ESTABLISHING PHYSICAL CONTACT SAID UNOXIDIZED SMOOTH FIBERS, AND THEN
Claim 6
Dependent Claim
9 words
ESTABLISHING PHYSICAL CONTACT SAID UNOXIDIZED SMOOTH FIBERS, AND THEN
Claim 7
Dependent Claim
10 words
establishing physical contact between said unoxidized smooth fibers, and then
Claim 8
Dependent Claim
10 words
establishing physical contact between said unoxidized smooth fibers, and then
Claim 9
Dependent Claim
60 words
The method of claim 1 wherein said metallic fibers are selected from the group consisting of steel and iron, the sheet is heated to a temperature of about 800* to 1300*C to cause an interdiffusion of atoms between the fibers and said metal coating is of a metal selected from the group consisting of nickel, cadmium, copper, silver and zinc.
Claim 10
Dependent Claim
52 words
The method of claim 1 wherein a plurality of sheets are provided, the sheets are stacked together and a pressure is imposed upon the stack so that fibers of one sheet are in physical contact with fibers of another sheet and the stack is heated to form said metallurgical bonds between fibers.
Claim 11
Dependent Claim
47 words
MAINTAINING SAID PHYSICAL CONTACT BETWEEN SAID UNOXIDIZED SMOOTH FIBERS AND HEATING THE SHEET OF UNOXIDIZED SMOOTH FIBERS IN A NON-OXIDIZING ATMOSPHERE TO FORM A METALLURGICAL BOND OF INTERDIFFUSED UNMELTED METAL BETWEEN FIBERS AT POINTS OF PHYSICAL CONTACT BY AN INTERDIFFUSION OF ATOMS BETWEEN THE FIBERS, AND FINALLY
Claim 12
Dependent Claim
47 words
MAINTAINING SAID PHYSICAL CONTACT BETWEEN SAID UNOXIDIZED SMOOTH FIBERS AND HEATING THE SHEET OF UNOXIDIZED SMOOTH FIBERS IN A NON-OXIDIZING ATMOSPHERE TO FORM A METALLURGICAL BOND OF INTERDIFFUSED UNMELTED METAL BETWEEN FIBERS AT POINTS OF PHYSICAL CONTACT BY AN INTERDIFFUSION OF ATOMS BETWEEN THE FIBERS, AND FINALLY
Claim 13
Dependent Claim
47 words
maintaining said physical contact between said unoxidized smooth fibers and heating the sheet of unoxidized smooth fibers in a non-oxidizing atmosphere to form a metallurgical bond of interdiffused unmelted metal between fibers at points of physical contact by an interdiffusion of atoms between the fibers, and finally
Claim 14
Dependent Claim
47 words
maintaining said physical contact between said unoxidized smooth fibers and heating the sheet of unoxidized smooth fibers in a non-oxidizing atmosphere to form a metallurgical bond of interdiffused unmelted metal between fibers at points of physical contact by an interdiffusion of atoms between the fibers, and finally
Claim 15
Dependent Claim
26 words
depositing a metal coating on the bonded fibers of said sheet, to form an electrode plaque of bonded coated fibers essentially free of clefts and protuberances.
Claim 16
Dependent Claim
26 words
depositing a metal coating on the bonded fibers of said sheet, to form an electrode plaque of bonded coated fibers essentially free of clefts and protuberances.
Claim 17
Dependent Claim
26 words
DEPOSITING A METAL COATING ON THE BONDED FIBERS OF SAID SHEET, TO FORM AN ELECTRODE PLAQUE OF BONDED COATED FIBERS ESSENTIALLY FREE OF CLEFTS AND PROTUBERANCES.
Claim 18
Dependent Claim
26 words
DEPOSITING A METAL COATING ON THE BONDED FIBERS OF SAID SHEET, TO FORM AN ELECTRODE PLAQUE OF BONDED COATED FIBERS ESSENTIALLY FREE OF CLEFTS AND PROTUBERANCES.
Claim 19
Dependent Claim
46 words
The method of claim 2 wherein the fibers have an average diameter of about 0.0008 inches, the electrode plaque is 75 to 95 percent porous, and the metal coating deposited over the fibers is a nickel coating having a thickness from about 0.0001 to 0.001 inches.
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) | 1978-07-21 | 1979-01-20 | 1979-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-21 | 1983-01-20 | 1983-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-21 | 1987-01-20 | 1987-07-22 | $7700.00 | Window Closed / Lapsed |