Patent US3253972A successfully refreshed from Google Patents.
US3253972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welding smooth, curved thermoplastic sections
Assignee: Phillips Petroleum Co
•
Filing: 1961-08-02
•
Granted: 1966-05-31
•
Expires: 1981-08-02
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Huddleston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:32
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/005; B29C65/00; B29C65/02; B29C65/18; B29C65/20; B29C65/2053; B29C65/2084; B29C65/78; B29C65/7802; B29C65/7841; B29C65/7847; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/114; B29C66/1142; B29C66/50; B29C66/51; B29C66/54; B29C66/543; B29C66/63; B29C66/632; B29C66/80; B29C66/82; B29C66/824; B29C66/8242; B29C66/83; B29C66/832; B29C66/8322; B29C66/90; B29C66/91; B29C66/912; B29C66/9121; B29C66/91211; B29C66/91212; B29C66/91231; B29C65/24; B29C65/30; B29C65/305; B29L; B29L2023/00; B29L2023/22; Y; Y10; Y10T; Y10T279/00; Y10T279/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
THE METHOD OF WELDING TOGETHER SMOOTH, CURVED SECTIONS OF THERMOPLASTIC WHICH COMPRISES SECURING A FIRST THERMOPLASTIC SECTION IN FIXED POSITION; HEATING THE FIRST THERMOPLASTIC SECTION AND A SECOND THERMOPLASTIC SECTION, AT THE SURFACES TO BE JOINED, TO A SOFTENED CONDITIONF MOVING THE SECOND THERMOPLASTIC SECTION INTO CONTACT WITH SAID FIRST THERMOPLASTIC SECTION IN A FIXED LINE OF TRAVEL COAXIAL WITH THE AXIDS OF SAID FIRST THERMOPLASTIC SECTION AND FREE FOR ANGULAR MOVEMENT WITH RESPECT TO SAID FIXED LINE OF TRAVEL.
Claim 2
Independent Claim
80 words
THE METHOD OF WELDING TOGETHER SMOOTH, CURVED SECTIONS OF THERMOPLASTIC WHICH COMPRISES SECURING A FIRST THERMOPLASTIC SECTION IN FIXED POSITION; HEATING THE FIRST THERMOPLASTIC SECTION AND A SECOND THERMOPLASTIC SECTION, AT THE SURFACES TO BE JOINED, TO A SOFTENED CONDITIONF MOVING THE SECOND THERMOPLASTIC SECTION INTO CONTACT WITH SAID FIRST THERMOPLASTIC SECTION IN A FIXED LINE OF TRAVEL COAXIAL WITH THE AXIDS OF SAID FIRST THERMOPLASTIC SECTION AND FREE FOR ANGULAR MOVEMENT WITH RESPECT TO SAID FIXED LINE OF TRAVEL.
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) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |