US3740526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of welding together sheets to form walls, tanks or the like
Assignee: Conch International Methane Ltd
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Filing: 1971-03-08
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Granted: 1973-06-19
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Expires: 1991-03-08
Abstract
Abstract In welding together metal sheets to form walls, tanks or the like, a connecting strip is used which supports a rail spaced from its edges and which serves as a track for mounting a welding machine. The edges of two adjacent sheets to be welded together are placed so that each overlaps one edge of the connecting strip, and the welding machine is then traversed along the rail while welding at least one sheet edge to the part of the connecting strip which it overlaps.
Inventors
- 👤 R Jackson
- 👤 E Armstrong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:25
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
112 words
A. A method employed in lap welding together two thin sheets via a connecting strip member, comprising b. providing said connecting strip member with a rail between and spaced from its said edges, and extending perpendicular to said member, in inverted-T fashion, c. overlapping the edge of each sheet with an edge of the connecting member, so that one face of the sheet is in contact with one face of the strip near an edge, d. mounting a welding machine on the said rail and traversing the welding maching along the rail while welding the connecting member to the face of at least one sheet near its edge, at said contacting faces.
Claim 2
Dependent Claim
112 words
A. A method employed in lap welding together two thin sheets via a connecting strip member, comprising b. providing said connecting strip member with a rail between and spaced from its said edges, and extending perpendicular to said member, in inverted-T fashion, c. overlapping the edge of each sheet with an edge of the connecting member, so that one face of the sheet is in contact with one face of the strip near an edge, d. mounting a welding machine on the said rail and traversing the welding maching along the rail while welding the connecting member to the face of at least one sheet near its edge, at said contacting faces.
Claim 3
Dependent Claim
42 words
A method according to claim 1, e. and the further step of proving a serif-like transversely thickened portion at the free edge of said rail, and positively supporting said welding maching on said thickened portion by sliding engagement with said thickened portion.
Claim 4
Dependent Claim
45 words
A method according to claim 1, e. wherein said welding step is performed by simultaneously and independently welding each of said two thin sheets to the same face of the connecting strip on opposite sides of said rail as the welding machine traverses the rail.
Claim 5
Dependent Claim
26 words
A method according to claim 1, e. and assembling said connecting strips as a framework for supporting said sheets as panels prior to said welding operation.
Claim 6
Dependent Claim
35 words
A method according to claim 4, f. and employing said welding operation to weld said sheets to said framework to provide a wall area of thin sheets, each supported at its edges by said framework.
Claim 7
Dependent Claim
34 words
A method according to claim 1, e. wherein said rail is removably supported by said connecting strip, and the further step of removing said rail from the step after the welding operation is performed.
References Cited (Backward Citations)
US1736539A
Cited
US2068166A
Cited
US2792490A
Cited
US3328556A
Cited
US3462579A
Cited
US3560698A
Cited
US3610867A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |