Patent US3178328A successfully refreshed from Google Patents.
US3178328A
Expired / Lapsed
US
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Process and apparatus for producing plastic net
Assignee: Union Carbide Corp
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Filing: 1961-05-17
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Granted: 1965-04-13
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Expires: 1981-05-17
Abstract
No abstract record available.
Inventors
- 👤 Frederick R Tittmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:48
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/345; B29C48/03; B29C48/05; B29C48/07; B29C48/13; B29C48/301; B29C48/08; B29C48/09; B29C48/10; B29L; B29L2028/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A PROCESS FOR PRODUCING FLAT PLASTIC NET COMPRISING EXTRUDING A FIBER-FORMING PLASTIC MASS INTO A PLURALITY OF PLASTIC STRAND-FORMING STREAMS ARRANGED IN AT LEAST ONE CIRCLE AND IMPARTING RELATIVE OSCILLATORY MOVEMENT TO SAID STRAND-FORMING STREAMS IN A DIRECTION TRANSVERSE TO THE DIRECTION OF EXTRUSION SO AS TO PERIODICALLY CONTACT AND SEPARATE ADJACENT STRAND-FORMING STREAMS WHILE SAID PLASTIC MASS IS IN A TACKY CONDITION, AT LEAST ONE PAIR OF ADJACENT STRAND-FORMING STREAMS IN THE SAME CIRCLE BEING SPACED APART A DISTANCE GREATER THAN THE AMPLITUDE OF SAID RELATIVE OSCILLATORY MOVEMENT, AND SETTING THE TACKY STRAND-FORMING STREAMS.
Claim 2
Dependent Claim
95 words
A PROCESS FOR PRODUCING FLAT PLASTIC NET COMPRISING EXTRUDING A FIBER-FORMING PLASTIC MASS INTO A PLURALITY OF PLASTIC STRAND-FORMING STREAMS ARRANGED IN AT LEAST ONE CIRCLE AND IMPARTING RELATIVE OSCILLATORY MOVEMENT TO SAID STRAND-FORMING STREAMS IN A DIRECTION TRANSVERSE TO THE DIRECTION OF EXTRUSION SO AS TO PERIODICALLY CONTACT AND SEPARATE ADJACENT STRAND-FORMING STREAMS WHILE SAID PLASTIC MASS IS IN A TACKY CONDITION, AT LEAST ONE PAIR OF ADJACENT STRAND-FORMING STREAMS IN THE SAME CIRCLE BEING SPACED APART A DISTANCE GREATER THAN THE AMPLITUDE OF SAID RELATIVE OSCILLATORY MOVEMENT, AND SETTING THE TACKY STRAND-FORMING STREAMS.
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) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |