US3254148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film stretching process
Assignee: Goodyear Tire and Rubber Co
•
Filing: 1963-01-10
•
Granted: 1966-05-31
•
Expires: 1983-01-10
Abstract
No abstract record available.
Inventors
- 👤 Richard G Nichols
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:44
CPC Classifications
B; B29; B29C; B29C55/00; B29C55/02; B29C55/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
IN THE PROCESS OF STRETCHING A PLASTIC FILM IN COMBINNATION THE STEPS OF (1) SUPPLYING A CONTINUOUS FILM TO KNURLING MEANS; (2) HEATING SAID FILM BY CONTACTING IT WITH HEAT MEANS PRIOR TO INDENTATION WITH SAID KNURLING MEANS; (3) IMPRESSING A KNURLED AREA ADJACENT THE EDGES OF THE FILM AND PARALLEL THERETO; (4) COOLING SAID KNURLED AREA PRIOR TO THE FIXATION OF TENTER CLAMPS THEREON; AND (5) CLAMPING SAID FILM ALONG THE KNURLED EDGES AND TRANSVERSELY STRETCHING SAID FILM WHEREBY ORIENTATION IS PRODUCED IN A TRANSVERSE DIRECTION.
Claim 2
Dependent Claim
87 words
IN THE PROCESS OF STRETCHING A PLASTIC FILM IN COMBINNATION THE STEPS OF (1) SUPPLYING A CONTINUOUS FILM TO KNURLING MEANS; (2) HEATING SAID FILM BY CONTACTING IT WITH HEAT MEANS PRIOR TO INDENTATION WITH SAID KNURLING MEANS; (3) IMPRESSING A KNURLED AREA ADJACENT THE EDGES OF THE FILM AND PARALLEL THERETO; (4) COOLING SAID KNURLED AREA PRIOR TO THE FIXATION OF TENTER CLAMPS THEREON; AND (5) CLAMPING SAID FILM ALONG THE KNURLED EDGES AND TRANSVERSELY STRETCHING SAID FILM WHEREBY ORIENTATION IS PRODUCED IN A TRANSVERSE DIRECTION.
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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) | 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 |