Patent US3349431A successfully refreshed from Google Patents.
US3349431A
Expired / Lapsed
US
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Apparatus for cold-stretching orientable sheet material
Assignee: Phillips Petroleum Co
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Filing: 1965-09-02
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Granted: 1967-10-31
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Expires: 1985-09-02
Abstract
No abstract record available.
Inventors
- 👤 Rasmussen Ole-Bendt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:00
CPC Classifications
B; B29; B29C; B29C55/00; B29C55/02; B29C55/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
APPARATUS FOR COLD STRETCHING ORIENTABLE SHEET MATERIAL COMPRISING, IN COMBINATION, MEANS FOR FORCING SAID SHEET INTO MULTIPLE LENGTHWISE FOLDS ACROSS THE WIDTH OF SAID SHEET, MEANS FOR SMOOTHING SAID FOLDS INTO PLEATS, AND MEANS FOR SUBJECTING THE RESULTING PLEATED FILM TO LONGITUDINAL STRETCHING, AND COOLING MEANS POSITIONED BETWEEN SAID SMOOTHING MEANS AND SAID STRECTCHING MEANS TO EVEN OUT FRICTION ON SAID PLEATED SHEETS AS THE PLEATS GRADUALLY DISAPPEAR DUE TO THE LONGITUDINAL STRETCHING.
Claim 2
Dependent Claim
73 words
APPARATUS FOR COLD STRETCHING ORIENTABLE SHEET MATERIAL COMPRISING, IN COMBINATION, MEANS FOR FORCING SAID SHEET INTO MULTIPLE LENGTHWISE FOLDS ACROSS THE WIDTH OF SAID SHEET, MEANS FOR SMOOTHING SAID FOLDS INTO PLEATS, AND MEANS FOR SUBJECTING THE RESULTING PLEATED FILM TO LONGITUDINAL STRETCHING, AND COOLING MEANS POSITIONED BETWEEN SAID SMOOTHING MEANS AND SAID STRECTCHING MEANS TO EVEN OUT FRICTION ON SAID PLEATED SHEETS AS THE PLEATS GRADUALLY DISAPPEAR DUE TO THE LONGITUDINAL STRETCHING.
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) | 1970-10-30 | 1971-05-01 | 1971-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-30 | 1975-05-01 | 1975-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-30 | 1979-05-01 | 1979-10-31 | $7700.00 | Window Closed / Lapsed |