US3216457A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminated tubular article and method of making same
Assignee: Phillips Petroleum Co
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Filing: 1962-04-18
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Granted: 1965-11-09
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Expires: 1982-04-18
Abstract
No abstract record available.
Inventors
- 👤 Fred J Zavasnik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:43
CPC Classifications
B; B29; B29C; B29C53/00; B29C53/56; B29C53/58; B29C53/581; B31; B31C; B31C1/00; B29K; B29K2995/00; B29K2995/0037; B29K2995/005; B29K2995/0053; B29L; B29L2031/00; B29L2031/60; B29L2031/601
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
119 words
A PROCESS FOR PREPARING LAMINATED ARTICLES OF THERMOPLASTIC BIAXIALLY ORIENTED FILM WHICH COMPRISES SIMULTANEOUSLY SEPARATELY WRAPPING ON A PLURALITY OF MANDRELS A PLURALITY OF LAYERS OF SAID FILM UNIT ABOUT ONE HALF OF THE DESIRED LAMINATE THICKNESS IS OBTAINED, POSITIONING SAID MANDRELS TOGETHER SO AS TO HAVE SAME REVOLVE AROUND A COMMON AXIS, CONTINUING THE WRAPPING OF SAID FILM AROUND SAID MANDRELS BY ROTATING THE REPOSITIONED MANDRELS AROUND SAID COMMON AXIS UNTIL THE DESIRED FINAL LAMINATE THICKNESS IS ACHIEVED, HEAT TREATING THE RESULTING LAMINATE FOR A TIME SUFFICIENT TO BRING THE ARTICLE TO A UNIFORM TEMPERATURE AND OBTAIN AN ADHESION BETWEEN THE PLURALITY OF LAYERS OF SAID FILM, COOLING THE THUS TREATED PRODUCT AND REMOVING SAME FROM THE MANDRELS.
Claim 2
Dependent Claim
119 words
A PROCESS FOR PREPARING LAMINATED ARTICLES OF THERMOPLASTIC BIAXIALLY ORIENTED FILM WHICH COMPRISES SIMULTANEOUSLY SEPARATELY WRAPPING ON A PLURALITY OF MANDRELS A PLURALITY OF LAYERS OF SAID FILM UNIT ABOUT ONE HALF OF THE DESIRED LAMINATE THICKNESS IS OBTAINED, POSITIONING SAID MANDRELS TOGETHER SO AS TO HAVE SAME REVOLVE AROUND A COMMON AXIS, CONTINUING THE WRAPPING OF SAID FILM AROUND SAID MANDRELS BY ROTATING THE REPOSITIONED MANDRELS AROUND SAID COMMON AXIS UNTIL THE DESIRED FINAL LAMINATE THICKNESS IS ACHIEVED, HEAT TREATING THE RESULTING LAMINATE FOR A TIME SUFFICIENT TO BRING THE ARTICLE TO A UNIFORM TEMPERATURE AND OBTAIN AN ADHESION BETWEEN THE PLURALITY OF LAYERS OF SAID FILM, COOLING THE THUS TREATED PRODUCT AND REMOVING SAME FROM THE MANDRELS.
Claim 3
Dependent Claim
36 words
A TUBULAR ARTICLE OF MANUFACTURE HAVING A PLURALITY OF CONDUITS THERETHROUGH, SAID TUBULAR ARTICLE BEING COMPOSED OF A PLURALITY OF FUSED LAYERS OF BIAXIALLY ORIENTED FILM TO ADAPTED AS TO PROVIDE A PLURALITY OF CONDUITS THERETHROUGH.
Claim 4
Dependent Claim
36 words
A TUBULAR ARTICLE OF MANUFACTURE HAVING A PLURALITY OF CONDUITS THERETHROUGH, SAID TUBULAR ARTICLE BEING COMPOSED OF A PLURALITY OF FUSED LAYERS OF BIAXIALLY ORIENTED FILM TO ADAPTED AS TO PROVIDE A PLURALITY OF CONDUITS THERETHROUGH.
References Cited (Backward Citations)
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US2929744A
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |