US4117300A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Redundant welding method for metal battery containers
Assignee: GTE Sylvania Inc
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Filing: 1977-04-05
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Granted: 1978-09-26
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Expires: 1997-04-05
Abstract
Abstract Hermetic sealing of battery containers is accomplished in such containers comprising metal bodies provided with flanges by first mating the bodies so the flanges are coextensive, planar resistance welding the bodies together through the flanges and subsequently peripherally laser welding the edges of the flanges together to effect a redundant weld and an hermetic seal.
Inventors
- 👤 Charles R. Ricards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:10
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/10; H01M50/172; H01M50/174; B; B23; B23K; B23K11/00; B23K11/30; B23K11/3081; B23K26/00; B23K26/20; B23K26/21; B23K26/22; B23K26/60; B23K2101/00; B23K2101/04; B23K2101/12; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10S; Y10S220/00; Y10S220/29; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49108
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
67 words
In a method of providing an hermetic seal between metal bodies each having a longitudinal axis and a flange transversely extending from said longitudinal axis the steps comprising: mating said flanged bodies with said flanges coextensive; planar resistance welding said bodies together through said flanges; and subsequently peripherally laser welding the edges of said flanges together to effect a separate, non-overlapping redundant weld and said hermetic seal.
Claim 2
Dependent Claim
67 words
In a method of providing an hermetic seal between metal bodies each having a longitudinal axis and a flange transversely extending from said longitudinal axis the steps comprising: mating said flanged bodies with said flanges coextensive; planar resistance welding said bodies together through said flanges; and subsequently peripherally laser welding the edges of said flanges together to effect a separate, non-overlapping redundant weld and said hermetic seal.
Claim 3
Dependent Claim
24 words
The method of claim 1 wherein said bodies and said flanges are cylindrical and the welding electrodes employed in said resistance welding are tubular.
Claim 4
Dependent Claim
29 words
The method of claim 2 wherein the inside dimension of at least one of said electrodes is sufficiently large to accommodate a protrusion formed on one of said bodies.
Claim 5
Dependent Claim
122 words
In a method of providing an hermetic seal between metal bodies each having a longitudinal axis and a flange extending in a direction transverse to said longitudinal axis, one of said flanges being provided with a depending notch, the steps comprising: mating said flanged bodies with said flanges coextensive;planar resistance welding aid bodies together through said flanges in substantially all areas except that including said depending notch, crimping said notch shut; spot welding said crimp by beginning at the center thereof an progressively working outwardly to the ends of said crimp, each of said spot welds overlapping its neighbor; and subsequently peripherally laser welding the edges of said flanges to effect a redundant weld separate and distinct from said planar resistance weld.
Claim 6
Dependent Claim
122 words
In a method of providing an hermetic seal between metal bodies each having a longitudinal axis and a flange extending in a direction transverse to said longitudinal axis, one of said flanges being provided with a depending notch, the steps comprising: mating said flanged bodies with said flanges coextensive;planar resistance welding aid bodies together through said flanges in substantially all areas except that including said depending notch, crimping said notch shut; spot welding said crimp by beginning at the center thereof an progressively working outwardly to the ends of said crimp, each of said spot welds overlapping its neighbor; and subsequently peripherally laser welding the edges of said flanges to effect a redundant weld separate and distinct from said planar resistance weld.
References Cited (Backward Citations)
FR696591A
Cited
US3431787A
Cited
US3380857A
Cited
US3427205A
Cited
US3415977A
Cited
US3689731A
Cited
US3982958A
Cited
US3823468A
Cited
US3846612A
Cited
US3881083A
Cited
US3996066A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-25 | 1982-03-27 | 1982-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-25 | 1986-03-27 | 1986-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-25 | 1990-03-27 | 1990-09-26 | $7700.00 | Window Closed / Lapsed |