Patent US3235644A successfully refreshed from Google Patents.
US3235644A
Expired / Lapsed
US
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Continuous lateral stretching of orientable sheet material
Assignee: Phillips Petroleum Co
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Filing: 1962-08-08
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Granted: 1966-02-15
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Expires: 1982-08-08
Abstract
No abstract record available.
Inventors
- 👤 Rasmussen Ole-Bendt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:04
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/42; D01D5/423; B; B29; B29C; B29C55/00; B29C55/02; B29C55/04; B29C55/08; B29C55/18; Y; Y10; Y10S; Y10S264/00; Y10S264/47; Y10T; Y10T225/00; Y10T225/10; Y10T225/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
IN A METHOD OF PRODUCING A LATERAL STRETCHING OF A CONTINUOUS FILM OF AN ORIENTABLE SHEET MATERIAL, SAID STRETCHING BEING OF SUCH UNIFORMITY ACROSS THE BREADTH OF THE FILM THAT NO TRIMMING IS NECESSARY, THE STEPS OF PASSING SAID FILM FORWARD INCONFINEMENT OVER SUBSTANTIALLY ITS ENTIRE BREADTH BETWEEN SECTIONS OF TWO ENDLESS RUBBER BANDS BEING PRESSED TOGETHER, SIAD RUBBER BANDS BEING PASSED OVER ROLLERS, THE MUTUAL DISTANCE OF WHICH IS SO ADJUST AS TO ALLOW FOR A CONTRACTION OF THE RUBBER BANDS IN A LONITUDINAL DIRECTION, AND GRADUALLY DISTENDING SAID RUBBER BANDS LATERALLY TOGETHER WITH THE CONFINED FILM FROM THE PLACE OF ENTRANCE OF THE LATTER TO THE PLACE WHERE IT LEAVES THE CONFINEMENT BETWEEN THE RUBBER BANDS.
Claim 2
Dependent Claim
118 words
IN A METHOD OF PRODUCING A LATERAL STRETCHING OF A CONTINUOUS FILM OF AN ORIENTABLE SHEET MATERIAL, SAID STRETCHING BEING OF SUCH UNIFORMITY ACROSS THE BREADTH OF THE FILM THAT NO TRIMMING IS NECESSARY, THE STEPS OF PASSING SAID FILM FORWARD INCONFINEMENT OVER SUBSTANTIALLY ITS ENTIRE BREADTH BETWEEN SECTIONS OF TWO ENDLESS RUBBER BANDS BEING PRESSED TOGETHER, SIAD RUBBER BANDS BEING PASSED OVER ROLLERS, THE MUTUAL DISTANCE OF WHICH IS SO ADJUST AS TO ALLOW FOR A CONTRACTION OF THE RUBBER BANDS IN A LONITUDINAL DIRECTION, AND GRADUALLY DISTENDING SAID RUBBER BANDS LATERALLY TOGETHER WITH THE CONFINED FILM FROM THE PLACE OF ENTRANCE OF THE LATTER TO THE PLACE WHERE IT LEAVES THE CONFINEMENT BETWEEN THE RUBBER BANDS.
References Cited (Backward Citations)
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US2334022A
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US2473404A
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US2547736A
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US2618012A
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US2841820A
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US2954587A
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US3007765A
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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) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |