US4326016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swaged seal for fused salt batteries
Assignee: Standard Oil Co
•
Filing: 1980-12-30
•
Granted: 1982-04-20
•
Expires: 2000-12-30
Abstract
Abstract This invention is directed toward a seal (25) for fused salt batteries (10) having a current conducting rod (19) partially within said battery and partially outside which includes a layer of compressible material (32) on the body of the current conducting rod leaving exposed the opposite ends thereof and a swaged metal sheath (33) covering and compressing the layer of material to approximately its maximum density. Optionally, a sealing glass (35) having a low coefficient of thermal expansion approximating that of the current conducting rod and the metal sheath can also be employed over the end of the rod and/or a plating (31) of a conductive metal can be provided over the end of the current conducting rod outside of the battery and/or a separate coating (28) of a different material can be deposited on the rod between the rod and the layer of compressible material. A process is also provided for forming the seal.
Inventors
- 👤 Theodore B. Selover, Jr.
- 👤 Thomas H. Hacha
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:36
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/10; H01M50/183; H01M50/19; H01M50/191; H01M50/186; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
64 words
A seal for fused salt batteries having a current conducting rod partially within said battery and partially outside comprising: a layer of material provided on the body of said current conducting rod leaving exposed the opposite ends thereof, said layer being inert in the fused salt electrolyte and compressible; and a swaged metal sheath covering said layer compacting it to approximately its maximum density.
Claim 2
Dependent Claim
64 words
A seal for fused salt batteries having a current conducting rod partially within said battery and partially outside comprising: a layer of material provided on the body of said current conducting rod leaving exposed the opposite ends thereof, said layer being inert in the fused salt electrolyte and compressible; and a swaged metal sheath covering said layer compacting it to approximately its maximum density.
Claim 3
Dependent Claim
23 words
A seal, as set forth in claim 1, wherein said current conducting rod is tungsten and said layer of material comprises boron nitride.
Claim 4
Dependent Claim
29 words
A seal, as set forth in claim 2, said seal further comprising: a coating provided on the body of said rod between said rod and said layer of material.
Claim 5
Dependent Claim
14 words
A seal, as set forth in claim 3, wherein said coating comprises silicon carbide.
Claim 6
Dependent Claim
19 words
A seal, as set forth in claim 4, wherein said metal sheath comprises an alloy of iron and nickel.
Claim 7
Dependent Claim
14 words
A seal, as set forth in claim 5, wherein said alloy further comprises cobalt.
Claim 8
Dependent Claim
64 words
A seal, as set forth in claim 1, said seal further comprising: a sealing glass having a low coefficient of thermal expansion approximating that of said current conducting rod and said metal sheath, wherein said sealing glass is selected from the group consisting of hard sealing glasses, vitreous solder glass and devitrifying solder glass and is applied over one end of said metal sheath.
Claim 9
Dependent Claim
64 words
A seal, as set forth in claim 3, said seal further comprising: a sealing glass having a low coefficient of thermal expansion approximating that of said current conducting rod and said metal sheath, wherein said sealing glass is selected from the group consisting of hard sealing glasses, vitreous solder glass and devitrifying solder glass and is applied over one end of said metal sheath.
Claim 10
Dependent Claim
49 words
A seal, as set forth in claims 1, 3, 7 or 8, said seal further comprising: a plating of a conductive metal over the end of said current conducting rod outside of said battery, wherein said conductive metal plating is selected from the group consisting of gold and silver.
Claim 11
Dependent Claim
13 words
A seal, as set forth in claim 9, wherein said metal is gold.
References Cited (Backward Citations)
US3645792A
Cited
US3472701A
Cited
US3678178A
Cited
US3874929A
Cited
US4278744A
Cited
US4252873A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-04-19 | 1985-10-19 | 1986-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-04-19 | 1989-10-19 | 1990-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-04-19 | 1993-10-19 | 1994-04-20 | $7700.00 | Window Closed / Lapsed |