US3274314A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic film production
Assignee: Phillips Petroleum Co
•
Filing: 1963-06-13
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Granted: 1966-09-20
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Expires: 1983-06-13
Abstract
No abstract record available.
Inventors
- 👤 Jimmie E Hudson
- 👤 Clayton E Ogier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:05
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/88; B29C48/90; B29C48/901; B29C48/903; B29C48/03; B29C48/09; B29C48/10; B29C48/001; B29C48/0018; B29C48/0019; B29C48/885; B29C48/904; B29C48/91; B29C48/911; B29C48/9115; B29C48/912; B29C48/9135; B29C48/919
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A PROCESS FOR ELIMINATING LONGITUDINAL STRETCHING OF A THIN FLEXIBLE TUBULAR FILM IN A TUBULAR HEATING ZONE WHICH HEATS SAID TUBULAR FILM TO ORIENTATION TEMPERATURE SO THAT SAID FILM CAN BE BIAXIALLY ORIENTED BEYOND SAID HEATING ZONE, THE PROCESS COMPRISING CREATING A SUFFICIENT VACUUM BETWEEN SAID TUBE AND THE BOUNDARY OF SAID TUBULAR HEATING ZONE AT THE OUTLET END OF SAID ZONE TO DRAW SAID TUBULAR FILM AGAINST SAID BOUNDAR TO PRODUCE A DRAG ON SAID FILM WHILE IN CONTACT WITH SAID BOUNDAR, SAID DRAG BEING SUFFICIENT TO SUBSTANTIALLY PREVENT LONGITUDINAL STRETCHING OF SAID FILM WHILE IN SAID HEATER, WITHOUT SUBSTANTIAL COOLING OF SAID FILM.
Claim 2
Dependent Claim
105 words
A PROCESS FOR ELIMINATING LONGITUDINAL STRETCHING OF A THIN FLEXIBLE TUBULAR FILM IN A TUBULAR HEATING ZONE WHICH HEATS SAID TUBULAR FILM TO ORIENTATION TEMPERATURE SO THAT SAID FILM CAN BE BIAXIALLY ORIENTED BEYOND SAID HEATING ZONE, THE PROCESS COMPRISING CREATING A SUFFICIENT VACUUM BETWEEN SAID TUBE AND THE BOUNDARY OF SAID TUBULAR HEATING ZONE AT THE OUTLET END OF SAID ZONE TO DRAW SAID TUBULAR FILM AGAINST SAID BOUNDAR TO PRODUCE A DRAG ON SAID FILM WHILE IN CONTACT WITH SAID BOUNDAR, SAID DRAG BEING SUFFICIENT TO SUBSTANTIALLY PREVENT LONGITUDINAL STRETCHING OF SAID FILM WHILE IN SAID HEATER, WITHOUT SUBSTANTIAL COOLING OF SAID FILM.
References Cited (Backward Citations)
CA629728A
Cited
US2936491A
Cited
US2963742A
Cited
GB880391A
Cited
US3166616A
Cited
US3213165A
Cited
US3169272A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |