US3242023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for producing extruded plastic net
Assignee: Union Carbide Corp
•
Filing: 1959-05-20
•
Granted: 1966-03-22
•
Expires: 1979-05-20
Abstract
No abstract record available.
Inventors
- 👤 Ralph D Schultheiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:42
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/345; B29C48/03; B29C48/05; B29C48/09; B29C48/301; B29C48/10; B29C48/11; B29C48/12; B29C48/13; B29L; B29L2028/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
116 words
A METHOD FOR PRODUCING A PLASTIC NET COMPRISING CONCURRENTLY EXTRUDING A MULTIPLICITY OF SIMILAR PLASTIC FIBERS IN A SINGLE LAYERED CYLINDER, EACH FIBER BEING AT THE SAME RADIAL DISTANCE FROM THE CENTER OF SAID CYLINDER; PERIODICALLY CONTACTING AND SEPARATING ADJACENT FIBERS IN SAID CYLINDER WHILE SAID FIBERS ARE IN THE TACKY STATE SO AS TO BOND SAID ADJACENT FIBERS TOGETHER AT THE POINTS OF CONTACT, AND FORM A CYLINDRICAL PLASTIC NET; AND COOLING SAID CYLINDRICAL PLASTIC NET TO SET THE PLASTIC MATERIAL THEREOF; ADJUSTING THE TEMPERATURE OF SAID NET TO AN ORIENTATION TEMPERATURE ABOVE THE SECOND-ORDER TRANSITION TEMPERATURE OF THE PLASTIC MATERIAL THEREOF; AND STRETCHING SAID NET AT SAID ORIENTATION TEMPERATURE IN THE DIRECTION OF EXTRUSION.
References Cited (Backward Citations)
US2522527A
Cited
US2689199A
Cited
US2738298A
Cited
US2842472A
Cited
US2919467A
Cited
AT200333B
Cited
US2895535A
Cited
US2985220A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |