US2786264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and device for protecting the joints of metal pipes coated with multi-layer protecting thermoplastic linings
Assignee: LAVORAZIONE MAT PLASTICHE Sas
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Filing: 1953-10-06
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Granted: 1957-03-26
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Expires: 1973-10-06
Abstract
No abstract record available.
Inventors
- 👤 Colombo Roberto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:45
CPC Classifications
F; F16; F16L; F16L58/00; F16L58/18; F16L58/181; B; B29; B29C; B29C63/00; B29C63/22; B29C65/00; B29C65/02; B29C65/18; B29C65/24; B29C65/30; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/12; B29C66/128; B29C66/1282; B29C66/12821; B29C66/1284; B29C66/12841; B29C66/14; B29C66/50; B29C66/51; B29C66/53; B29C66/532; B29C66/5324; B29C66/53241; B29C66/70; B29C66/72; B29C66/723; B29C66/7232; B29C66/72321; B32; B32B; B32B15/00; B32B15/04; B32B15/08; B29L; B29L2009/00; B29L2009/003; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49718; Y10T29/49732; Y10T29/49734; Y10T29/49826; Y10T29/49888
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A METHOD OF PROTECTING WELDED JOINTS OF METAL CYLINDERS COATED WITH A PLURALITY OF LAYERS OF SYNTHETIC MATERIAL, COMPRISING FITTING OVER THE LAYERS OF SYNTHETIC MATERIAL ON THE END OF ONE OF THE CYLINDERS TO BE JOINED A SLEEVE OF SYNTHETIC MATERIAL COMPRISING A PLURALITY OF COMPONENT LAYERS OF THE SAME KIND AS THE LAYERS FORMING TH PROTECTING COATING ON THE CYLINDERS, JOINING THE ADJACENT ENDS OF THE CYLINDERS BY WELDING, REMOVING THE DAMAGED PROTION OF THE PROTECTING COATING FROM THE CYLINDERS AT THE WELDING REGION, SEPARATING SAID SLEEVE INTO ITS COMPONENT LAYERS, CUTTING SAID LAYERS ALONG THEIR GENERATRICES, AND WELDING EACH OF SAID COMPONENT LAYERS
Claim 2
Independent Claim
106 words
A METHOD OF PROTECTING WELDED JOINTS OF METAL CYLINDERS COATED WITH A PLURALITY OF LAYERS OF SYNTHETIC MATERIAL, COMPRISING FITTING OVER THE LAYERS OF SYNTHETIC MATERIAL ON THE END OF ONE OF THE CYLINDERS TO BE JOINED A SLEEVE OF SYNTHETIC MATERIAL COMPRISING A PLURALITY OF COMPONENT LAYERS OF THE SAME KIND AS THE LAYERS FORMING TH PROTECTING COATING ON THE CYLINDERS, JOINING THE ADJACENT ENDS OF THE CYLINDERS BY WELDING, REMOVING THE DAMAGED PROTION OF THE PROTECTING COATING FROM THE CYLINDERS AT THE WELDING REGION, SEPARATING SAID SLEEVE INTO ITS COMPONENT LAYERS, CUTTING SAID LAYERS ALONG THEIR GENERATRICES, AND WELDING EACH OF SAID COMPONENT LAYERS
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-25 | 1960-09-24 | 1961-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-25 | 1964-09-24 | 1965-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-25 | 1968-09-24 | 1969-03-26 | $7700.00 | Window Closed / Lapsed |