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US3669804A Expired / Lapsed US ⏱️ 0.0 years remaining

Apparatus for bonding continuous flexible strands coated with a thermoplastic adhesive to the surface of moving veneer strips

Assignee: Simpson Timber Co
•
Filing: 1970-05-11
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Granted: 1972-06-13
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Expires: 1990-05-11
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Abstract

Abstract Continuous, flexible strands having a thermoplastic adhesive applied thereto are continuously bonded to crowded together strips of random width wood veneer by means of multiple, independently mounted shoe members in pressure contact with the surface of the veneer, the shoes being of a length to follow undulations which occur in veneer sliced from a log with a rotary lathe. The first of the shoes contacting the adhesive coated strands is heated to keep the thermoplastic adhesive on the strands in a flowable state as they pass under and are pressed against the surface of the veneer strips. The remainder of the shoes are cooled with a cooling medium to cool the adhesive on the strands sufficiently to bond the strands to the veneer surface.

Inventors

  • 👤 Victor H Clausen
  • 👤 Arnold Zweig

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 21:31
CPC Classifications
B; B27; B27D; B27D1/00; Y; Y10; Y10T; Y10T156/00; Y10T156/17; Y10T156/1702; Y10T156/1712; Y10T156/1715; Y10T156/1744; Y10T156/1749

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) 1975-06-13 1975-12-13 1976-06-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-06-13 1979-12-13 1980-06-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-06-13 1983-12-13 1984-06-13 $7700.00 Window Closed / Lapsed

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