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US3621528A Expired / Lapsed US ⏱️ 0.0 years remaining

Apparatus for extruding net-like fabrics

Assignee: FMC Corp
•
Filing: 1970-04-20
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Granted: 1971-11-23
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Expires: 1990-04-20
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Abstract

Abstract APPARATUS FOR MAKING NET-LIKE STRUCTURES WHICH INCLUDE A PAIR OF DISPLACEABLE DIE-CARRYING MEMBERS HAVING SETS OF COOPERATING, COMPLEMENTARY DIE-FORMING ORIFICES ALONG OPPOSING SURFACES TO WHICH FLOWABLE PLASTIC OR STRANDFORMING MATERIAL IS DELIVERED AND EXTRUDED THEREFROM AS SHAPED STREAMS. POSITIONED BETWEEN AND IN SNUG BUT SLIDING CONTACT WITH THE OPPOSING SURFACES OF THE DIE-CARRYING MEMBERS IS A SEPARATOR PLATE WHICH INCLUDES A PLURALITY OF SPACED PARTITIONS FOR KEEPING THE SHAPED STREAMS APART AT CERTAIN OF THEIR LOCATIONS OF CROSSING. THE SEPARATOR PLATE IS FLARED LATERALLY IN THE AREAS ADJACENT TO THE SETS OF ORIFICES SO AS TO DIRECT THE SHAPE STREAMS ALONG DIVERGING PATHS AS THEY ISSUE FROM THE SETS OF ORIFICES.

Inventors

  • 👤 Theodore H Fairbanks
  • 👤 Robert F Gillespie

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 09:03
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/305; B29C48/31; B29C48/313; B29C48/03; B29C48/05; B29C48/07; B29C48/08; B29C48/13; B29L; B29L2028/00

Claims Analysis

Total Claims: 0
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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) 1974-11-22 1975-05-24 1975-11-23 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-11-22 1979-05-24 1979-11-23 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-11-22 1983-05-24 1983-11-23 $7700.00 Window Closed / Lapsed

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