Patent US3880340A successfully refreshed from Google Patents.
US3880340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for welding a flange to a pipe
Assignee: Mitsui Engineering and Shipbuilding Co Ltd
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Filing: 1974-05-13
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Granted: 1975-04-29
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Expires: 1994-05-13
Abstract
Abstract Apparatus for regularly welding a tack welded flange to a pipe in which welding torches for welding outer corner on the pipe and inner corner of the flange are automatically positioned. To this end means for positioning the welding torch for welding the outer corner is provided and means for moving the welding torch for welding the inner corner according as the former welding torch is moved for positioning the latter welding torch.
Inventors
- 👤 Tetsuo Takeuchi
- 👤 Kaoru Shiozawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:19
CPC Classifications
B; B23; B23K; B23K5/00; B23K5/02; B23K5/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
201 words
An apparatus for welding an inner and outer corner of a flange previously tack welded to a pipe comprising an outer first slide mounted for sliding vertically above the pipe, an outer second slide mounted on said outer first slide for sliding perpendicular to said outer first slide along the axis of the pipe, a welding torch carried on said outer second slide for welding the outer flange-pipe corner, means for regulating the stop position for said outer first slide, means for regulating the stop position for said outer second slide, an inner first slide provided to be vertically moved at the position adjacent to the flange, an inner second slide mounted on said inner first slide for sliding perpendicular to said inner first slide along the axis of the pipe, a welding torch carried on said inner second slide for welding the inner flange-pipe corner, means for regulting the stop position of the inner second slide on the inner first slide, and means, including a cam, for operatively connecting said outer first slide to the inner first slide to vertically position the welding torch connected to said inner second slide at said inner second slide at said inner flange-pipe cornner.
Claim 2
Independent Claim
201 words
An apparatus for welding an inner and outer corner of a flange previously tack welded to a pipe comprising an outer first slide mounted for sliding vertically above the pipe, an outer second slide mounted on said outer first slide for sliding perpendicular to said outer first slide along the axis of the pipe, a welding torch carried on said outer second slide for welding the outer flange-pipe corner, means for regulating the stop position for said outer first slide, means for regulating the stop position for said outer second slide, an inner first slide provided to be vertically moved at the position adjacent to the flange, an inner second slide mounted on said inner first slide for sliding perpendicular to said inner first slide along the axis of the pipe, a welding torch carried on said inner second slide for welding the inner flange-pipe corner, means for regulting the stop position of the inner second slide on the inner first slide, and means, including a cam, for operatively connecting said outer first slide to the inner first slide to vertically position the welding torch connected to said inner second slide at said inner second slide at said inner flange-pipe cornner.
References Cited (Backward Citations)
US3634648A
Cited
US3777103A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-28 | 1978-10-28 | 1979-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-28 | 1982-10-28 | 1983-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-28 | 1986-10-28 | 1987-04-29 | $7700.00 | Window Closed / Lapsed |