US3074108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for biaxially orienting thermoplastic film
Assignee: Phillips Petroleum Co
•
Filing: 1960-04-25
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Granted: 1963-01-22
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Expires: 1980-04-25
Abstract
No abstract record available.
Inventors
- 👤 Fred E Wiley
- 👤 Harry C Wain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:39
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/88; B29C48/90; B29C48/901; B29C48/902; B29C48/03; B29C48/09; B29C48/10; B29C48/30; B29C48/32; B29C48/34; B29C48/911; B29C48/9115; B29C48/912; B29C48/001; B29C48/0018; B29C48/0019; Y; Y10; Y10S; Y10S264/00; Y10S264/73
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
APPARATUS FOR IMPARTING BIAXIAL ORIENTATION TO THERMOPLASTIC FILM COMPRISING, IN COMBINATION, A DIE HAVING AN OPENING THEREIN FOR FORMING TUBULAR SHAPES, MEANS FOR EXTRUDING PLASTIC MATERIAL THROUGH SAID DIE TO FORM A TUBE, MEANS FOR PULLING SAID TUBE FROM SAID DIE TO PRODUCE LONGITUDINAL STRETCHING, EXPANSION MEANS POSITIONED BETWEEN SAID PULLING MEANS AND SAID DIE, FOR ENLARGING THE DIAMETER OF SAID TUBE TO PRODUCE TRANSVERSE STRETCHING AND MEANS BETWEEN SAID DIE AND SAID EXPANSION MEANS FOR BRINGING THE TUBE TO ORIENTATION TEMPERATURE BEFORE SUBSTANTIAL EXPANSION THEREOF, INCLUDING MEANS FOR BLOWING COOLING GAS ONTO THE OUTSIDE OF SAID TUBE AND AT LEAST ONE ANNULAR BAFFLE MOVABLY POSITIONED AROUND THE OUTSIDE OF SAID TUBE BETWEEN SAID MEANS FOR BLOWING COOLING GAS AND SAID EXPANSION MEANS, WHEREBY THE ZONE OF COOLING BY SAID GAS CAN BE RESTRICTED AND THE DEGREE OF COOLING OF SAID TUBE LIMITED.
Claim 2
Dependent Claim
143 words
APPARATUS FOR IMPARTING BIAXIAL ORIENTATION TO THERMOPLASTIC FILM COMPRISING, IN COMBINATION, A DIE HAVING AN OPENING THEREIN FOR FORMING TUBULAR SHAPES, MEANS FOR EXTRUDING PLASTIC MATERIAL THROUGH SAID DIE TO FORM A TUBE, MEANS FOR PULLING SAID TUBE FROM SAID DIE TO PRODUCE LONGITUDINAL STRETCHING, EXPANSION MEANS POSITIONED BETWEEN SAID PULLING MEANS AND SAID DIE, FOR ENLARGING THE DIAMETER OF SAID TUBE TO PRODUCE TRANSVERSE STRETCHING AND MEANS BETWEEN SAID DIE AND SAID EXPANSION MEANS FOR BRINGING THE TUBE TO ORIENTATION TEMPERATURE BEFORE SUBSTANTIAL EXPANSION THEREOF, INCLUDING MEANS FOR BLOWING COOLING GAS ONTO THE OUTSIDE OF SAID TUBE AND AT LEAST ONE ANNULAR BAFFLE MOVABLY POSITIONED AROUND THE OUTSIDE OF SAID TUBE BETWEEN SAID MEANS FOR BLOWING COOLING GAS AND SAID EXPANSION MEANS, WHEREBY THE ZONE OF COOLING BY SAID GAS CAN BE RESTRICTED AND THE DEGREE OF COOLING OF SAID TUBE LIMITED.
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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) | 1966-01-21 | 1966-07-23 | 1967-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-21 | 1970-07-23 | 1971-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-21 | 1974-07-23 | 1975-01-22 | $7700.00 | Window Closed / Lapsed |