US2866231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of stretching rubber hydrochloride film
Assignee: Goodyear Tire and Rubber Co
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Filing: 1956-07-11
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Granted: 1958-12-30
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Expires: 1976-07-11
Abstract
No abstract record available.
Inventors
- 👤 Paul J Vaughan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:29
CPC Classifications
B; B29; B29C; B29C55/00; B29C55/02; B29C55/023; B29C55/10; B29C55/12; B29C55/14; B29C55/143; B29C55/20; B29K; B29K2011/00; B29K2027/00; B29K2027/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
THE METHOD OF STRETCHING RUBBER HYDROCHLORIDE FILM CONTAINING SUBSTANTIALLY 5 TO 10 PARTS OF ESTER PLASTICIZER PER 100 PARTS OF THE RUBBER HYDROCHLORIDE, WHICH COMPRISES HEATING THE FILM TO A TEMPERATURE OF 205 TO 220*F. AND THEN IMMEDIATELY STRETCHING THE FILM TO AT LEAST SUBSTANTIALLY DOUBLE ITS LENGTH, AND THEN IMMEDIATELY STRETCHING THE FILM TO AT LEAST SUBSTANTIALLY DOUBLE ITS WIDTH WHILE SUPPLYING HEAT TO IT DURING A SUBSTANTIAL PART OF THE PERIOD OF LATERAL STRETCHING AND MAINTAINING IT AT A TEMPERATURE OF SUBSTANTIALLY 170 TO 190*F. DURING SAID LATERAL STRETCHING.
Claim 2
Independent Claim
91 words
THE METHOD OF STRETCHING RUBBER HYDROCHLORIDE FILM CONTAINING SUBSTANTIALLY 5 TO 10 PARTS OF ESTER PLASTICIZER PER 100 PARTS OF THE RUBBER HYDROCHLORIDE, WHICH COMPRISES HEATING THE FILM TO A TEMPERATURE OF 205 TO 220*F. AND THEN IMMEDIATELY STRETCHING THE FILM TO AT LEAST SUBSTANTIALLY DOUBLE ITS LENGTH, AND THEN IMMEDIATELY STRETCHING THE FILM TO AT LEAST SUBSTANTIALLY DOUBLE ITS WIDTH WHILE SUPPLYING HEAT TO IT DURING A SUBSTANTIAL PART OF THE PERIOD OF LATERAL STRETCHING AND MAINTAINING IT AT A TEMPERATURE OF SUBSTANTIALLY 170 TO 190*F. DURING SAID LATERAL 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) | 1961-12-29 | 1962-06-30 | 1962-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-29 | 1966-06-30 | 1966-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-29 | 1970-06-30 | 1970-12-30 | $7700.00 | Window Closed / Lapsed |