Patent US3049465A successfully refreshed from Google Patents.
US3049465A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for joining plastic articles
Assignee: Phillips Petroleum Co
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Filing: 1957-11-04
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Granted: 1962-08-14
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Expires: 1977-11-04
Abstract
No abstract record available.
Inventors
- 👤 Paul E Wilkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:12
CPC Classifications
F; F16; F16L; F16L47/00; F16L47/02; F16L47/03; B; B29; B29C; B29C65/00; B29C65/02; B29C65/34; B29C65/3404; B29C65/342; B29C65/3428; B29C65/3444; B29C65/3452; B29C65/48; B29C65/4805; B29C65/481; B29C65/4815; B29C65/50; B29C65/5042; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/114; B29C66/1142; B29C66/50; B29C66/51; B29C66/52; B29C66/522; B29C66/5221; B29C65/3468; B29C65/3472; B29C65/3476; B29C65/5007; B29C66/70; B29C66/71; B29C73/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
AN IMPROVED METHOD FOR JOINING TOGETHER ADJACENT SECTIONS OF THERMOPLASTIC PIPE WHICH COMPRISES SECURING A LENGTH OF RESISTANCE ELEMENT TO THE SURFACE OF A SINGLE DEFORMABLE STRIP OF THERMOPLASTIC MATERIAL IN A SERIES OF ADJACENT TURNS IN CONTACT WITH THE SURFACE OF THE STRIP; PLACING THE SECTIONS OF PIPE TO BE JOINED TOGETHER IN CONTIGUOUS END-TO-END RELATIONSHIP; WRAPPING THE STRIP AROUND THE PIPES AT THE JUNCTION OF THE PIPES WITH THE RESISTANCE ELEMENT ADJACENT THE JUNCTION; CONNECTING THE ENDS OF THE RESISTANCE ELEMENT TO A SOURCE OF ELECTRIC POTENTIAL; APPLYING SUFFICIENT POTENTIAL TO SAID RESISTANCE ELEMENT TO RAISE ITS TEMPERATURE ABOVE THE SOFTENING TEMPERATURE OF THE THERMOPLASTIC MATERIAL; MAINTAINING THE APPLICATION OF POTENTIAL FOR A PERIOD OF TIME SUFFICIENT TO SOFTEN AT LEAST A PORTION OIF SAID STRIP AND SAID PIPES AT SAID JUNCTION; AND MAINTAINING SAID STRIP IN CONTACT WITH SAID JUNCTION UNTIL THE PIPE HAS COOLED TO BELOW THE SOFTENING TEMPERATURE.
Claim 2
Dependent Claim
153 words
AN IMPROVED METHOD FOR JOINING TOGETHER ADJACENT SECTIONS OF THERMOPLASTIC PIPE WHICH COMPRISES SECURING A LENGTH OF RESISTANCE ELEMENT TO THE SURFACE OF A SINGLE DEFORMABLE STRIP OF THERMOPLASTIC MATERIAL IN A SERIES OF ADJACENT TURNS IN CONTACT WITH THE SURFACE OF THE STRIP; PLACING THE SECTIONS OF PIPE TO BE JOINED TOGETHER IN CONTIGUOUS END-TO-END RELATIONSHIP; WRAPPING THE STRIP AROUND THE PIPES AT THE JUNCTION OF THE PIPES WITH THE RESISTANCE ELEMENT ADJACENT THE JUNCTION; CONNECTING THE ENDS OF THE RESISTANCE ELEMENT TO A SOURCE OF ELECTRIC POTENTIAL; APPLYING SUFFICIENT POTENTIAL TO SAID RESISTANCE ELEMENT TO RAISE ITS TEMPERATURE ABOVE THE SOFTENING TEMPERATURE OF THE THERMOPLASTIC MATERIAL; MAINTAINING THE APPLICATION OF POTENTIAL FOR A PERIOD OF TIME SUFFICIENT TO SOFTEN AT LEAST A PORTION OIF SAID STRIP AND SAID PIPES AT SAID JUNCTION; AND MAINTAINING SAID STRIP IN CONTACT WITH SAID JUNCTION UNTIL THE PIPE HAS COOLED TO BELOW THE SOFTENING TEMPERATURE.
References Cited (Backward Citations)
GB189826644A
Cited
US2378801A
Cited
GB585186A
Cited
US2630398A
Cited
US2739829A
Cited
US2719907A
Cited
US2762791A
Cited
US2742390A
Cited
US2713017A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-13 | 1966-02-12 | 1966-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-13 | 1970-02-12 | 1970-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-13 | 1974-02-12 | 1974-08-14 | $7700.00 | Window Closed / Lapsed |