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US3843435A Expired / Lapsed US ⏱️ 0.0 years remaining

Processes and apparatuses for continuously manufacturing tubular bodies of reinforced synthetic plastic

Assignee: BRODERNA OTTOSSON AND CO AB
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Filing: 1972-06-19
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Granted: 1974-10-22
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Expires: 1992-06-19
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Abstract

Abstract 1. A process of continuously manufacturing a tubular body, comprising the steps of advancing a flexible hose from a supply, in which said hose is rolled in flat condition into a roll, by pulling over a torus-shaped annular member to expand it into cylindrical shape and to hold ii in said shape over a distance beyond said annular member, applying rollers to the exterior surface of said advancing hose within the range of said annular member to support said annular member and keep it substantially axially immovable within said hose, rotating said supply, said hose and said rollers around the axis of said annular member during said advancing, applying randomly oriented fibers and a curable plastic to the exterior surface of said advancing and rotating hose within an application zone beyond said annular member, and curing the applied plastic on said advancing and rotating hose within a curing zone following the application zone.

Inventors

  • 👤 T Strom

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 21:30
CPC Classifications
B; B29; B29C; B29C41/00; B29C41/02; B29C41/08; B29C41/085; B29C41/24; B29C41/26; B29K; B29K2105/00; B29K2105/06; B29K2105/12

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 152 words
A process of continuously manufacturing a tubular body, comprising the steps of advancing a flexible hose from a supply, in which said hose is rolled in flat condition into a roll, by pulling over a torus-shaped annular member to expand it into cylindrical shape and to hold ii in said shape over a distance beyond said annular member, applying rollers to the exterior surface of said advancing hose within the range of said annular member to support said annular member and keep it substantially axially immovable within said hose, rotating said supply, said hose and said rollers around the axis of said annular member during said advancing, applying randomly oriented fibers and a curable plastic to the exterior surface of said advancing and rotating hose within an application zone beyond said annular member, and curing the applied plastic on said advancing and rotating hose within a curing zone following the application zone.
Claim 2
Dependent Claim 152 words
A process of continuously manufacturing a tubular body, comprising the steps of advancing a flexible hose from a supply, in which said hose is rolled in flat condition into a roll, by pulling over a torus-shaped annular member to expand it into cylindrical shape and to hold ii in said shape over a distance beyond said annular member, applying rollers to the exterior surface of said advancing hose within the range of said annular member to support said annular member and keep it substantially axially immovable within said hose, rotating said supply, said hose and said rollers around the axis of said annular member during said advancing, applying randomly oriented fibers and a curable plastic to the exterior surface of said advancing and rotating hose within an application zone beyond said annular member, and curing the applied plastic on said advancing and rotating hose within a curing zone following the application zone.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-10-21 1978-04-22 1978-10-22 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-10-21 1982-04-22 1982-10-22 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-10-21 1986-04-22 1986-10-22 $7700.00 Window Closed / Lapsed

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