US3119151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing annealed thermoplastic films
Assignee: Millennium Petrochemicals Inc
•
Filing: 1961-10-17
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Granted: 1964-01-28
•
Expires: 1981-10-17
Abstract
No abstract record available.
Inventors
- 👤 Herbert O Corbett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:30
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/88; B29C48/919; B29C48/03; B29C48/07; B29C48/08; B29C48/911; B29C48/9135; B29C48/914
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
AN APPARATUS FOR FORMING THERMOPLASTIC FILMS, COMPRISING A PAIR OF ROLL ELEMENTS DISPOSED IN PARALLEL, CLOSELY SPACED, SUBSTANTIALLY TANGENTIAL RELATION, SAID ROLL ELEMENTS FORMING THE BOTTOM OF A QUENCH TANK INCLUDING SIDE AND END WALL UNITS WHEREIN SAID UNITS ARE PROVIDED AND DISPOSED FOR SUBSTANTIALLY FLUID-TIGHT FRICTIONAL ENGAGEMENT WITH SAID ROLL ELEMENTS, SAID SIDE WALL UNITS EXTENDING IN SUBSTANTIALLY PARALLEL RELATION LONGITUDINALLY THEREOF; MEANS FOR CIRUCLATING A CHILLED HEAT EXCHANGE FLUID THROUGH AT LEAST ONE OF SAID ROLL ELEMENTS, MEANS FOR CIRCULATING A HEATED HEAT EXCHANGE LIQUID THROUGH SAID TANK, INCLUDING A PAIR OF CIRCULATING TROUGHS SUPPORTED ON SAID
Claim 2
Independent Claim
99 words
AN APPARATUS FOR FORMING THERMOPLASTIC FILMS, COMPRISING A PAIR OF ROLL ELEMENTS DISPOSED IN PARALLEL, CLOSELY SPACED, SUBSTANTIALLY TANGENTIAL RELATION, SAID ROLL ELEMENTS FORMING THE BOTTOM OF A QUENCH TANK INCLUDING SIDE AND END WALL UNITS WHEREIN SAID UNITS ARE PROVIDED AND DISPOSED FOR SUBSTANTIALLY FLUID-TIGHT FRICTIONAL ENGAGEMENT WITH SAID ROLL ELEMENTS, SAID SIDE WALL UNITS EXTENDING IN SUBSTANTIALLY PARALLEL RELATION LONGITUDINALLY THEREOF; MEANS FOR CIRUCLATING A CHILLED HEAT EXCHANGE FLUID THROUGH AT LEAST ONE OF SAID ROLL ELEMENTS, MEANS FOR CIRCULATING A HEATED HEAT EXCHANGE LIQUID THROUGH SAID TANK, INCLUDING A PAIR OF CIRCULATING TROUGHS SUPPORTED ON SAID
References Cited (Backward Citations)
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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) | 1967-01-27 | 1967-07-29 | 1968-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-27 | 1971-07-29 | 1972-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-27 | 1975-07-29 | 1976-01-28 | $7700.00 | Window Closed / Lapsed |