US3146331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing helical-seam pipe
Assignee: Hoesch AG
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Filing: 1962-10-05
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Granted: 1964-08-25
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Expires: 1982-10-05
Abstract
No abstract record available.
Inventors
- 👤 Schubert Willy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:37
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
176 words
AN APPARATUS FOR PRODUCING HELICAL-SEAM PIPE, COMPRISING CYLINDER-FORMING MEANS FOR WINDING A METALLIC BAND INTO A METAL TUBE WITH A PLURALITY OF CONVOLUTIONS UPON FEEDING OF SAID BAND GENERALLY TANGENTIALLY INTO SAID CYLINDER-FORMING MEANS AT AN ANGLE TO THE AXIS OF SAID TUBE; FEED MEANS FOR SUPPLYING SAID BAND TO SAID CYLINDER FORMING MEANS WHEREBY OPPOSITE LONGITUDINAL EDGES OF SAID BAND ARE JUXTAPOSED UPON COMPLETION OF A CONVOLUTION; WELDING MEANS FOR CONTINUOUSLY JOINING SAID EDGES UPON JUXTAPOSITION THEREOF TO FORM A HELICALLY EXTENDING WELD BONDING ADJACENT CONVOLUTIONS TOGETHER; AND CONTROL MEANS FOR ADJUSTING THE RELATIVE POSITIONS OF SAID EDGES UPON JUXTAPOSITION THEREOF, SAID CONTROL MEANS INCLUDING A PLURALITY OF GUIDE ELEMENTS AXIALLY SPACED APART GENERALLY TRANSVERSELY TO THE DIRECTION OF BAND FEED IN ENGAGEMENT WITH SAID BAND IN ADVANCE OF SAID WELDING MEANS AND EXTENDING GENERALLY IN PLANES PERPENDICULAR TO SAID BAND, AND ADJUSTING MEANS FOR ANGULARLY DISPLACING SAID ELEMENTS ABOUT RESPECTIVE AXES PERPENDICULAR TO SAID BAND FOR SHIFTING AT LEAST ONE OF SAID EDGES TO MAINTAIN A PREDETERMINED RELATIONSHIP BETWEEN SAID EDGES UPON JUXTAPOSITION THEREOF.
Claim 2
Independent Claim
176 words
AN APPARATUS FOR PRODUCING HELICAL-SEAM PIPE, COMPRISING CYLINDER-FORMING MEANS FOR WINDING A METALLIC BAND INTO A METAL TUBE WITH A PLURALITY OF CONVOLUTIONS UPON FEEDING OF SAID BAND GENERALLY TANGENTIALLY INTO SAID CYLINDER-FORMING MEANS AT AN ANGLE TO THE AXIS OF SAID TUBE; FEED MEANS FOR SUPPLYING SAID BAND TO SAID CYLINDER FORMING MEANS WHEREBY OPPOSITE LONGITUDINAL EDGES OF SAID BAND ARE JUXTAPOSED UPON COMPLETION OF A CONVOLUTION; WELDING MEANS FOR CONTINUOUSLY JOINING SAID EDGES UPON JUXTAPOSITION THEREOF TO FORM A HELICALLY EXTENDING WELD BONDING ADJACENT CONVOLUTIONS TOGETHER; AND CONTROL MEANS FOR ADJUSTING THE RELATIVE POSITIONS OF SAID EDGES UPON JUXTAPOSITION THEREOF, SAID CONTROL MEANS INCLUDING A PLURALITY OF GUIDE ELEMENTS AXIALLY SPACED APART GENERALLY TRANSVERSELY TO THE DIRECTION OF BAND FEED IN ENGAGEMENT WITH SAID BAND IN ADVANCE OF SAID WELDING MEANS AND EXTENDING GENERALLY IN PLANES PERPENDICULAR TO SAID BAND, AND ADJUSTING MEANS FOR ANGULARLY DISPLACING SAID ELEMENTS ABOUT RESPECTIVE AXES PERPENDICULAR TO SAID BAND FOR SHIFTING AT LEAST ONE OF SAID EDGES TO MAINTAIN A PREDETERMINED RELATIONSHIP BETWEEN SAID EDGES UPON JUXTAPOSITION THEREOF.
References Cited (Backward Citations)
US3030488A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |