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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10350807 B1

PDFFull Text
Date of Patent:
Jul. 16, 2019

Filed:

Jun. 17, 2016

Method and apparatus for extrusion of thermoplastic handrail

Applicant:

Ehc Canada, Inc., Oshawa, CA;

Inventors:

Andrew Oliver Kenny, Toronto, CA;

Douglas James Weatherall, Bolton, CA;

Viqar Haider, Markham, CA;

Ronald Harold Ball, Shanghai, CN;

Alexander Stuart Caunce, Cobourg, CA;

Reginald Anthony Butwell, Young's Point, CA;

Assignee:

EHC CANADA, INC., Oshawa, CA;

Attorney:

Bereskin & Parr LLP/S.E.N.C.R.L., s.r.l.

Primary Examiner:

Joseph S Del Sole

Assistant Examiner:

Joseph S Leyson

Int. Cl.
CPC ...
B29C 47/02 (2006.01); B29C 47/14 (2006.01); B29C 47/28 (2006.01); B29C 48/154 (2019.01); B29C 48/06 (2019.01); B29C 48/07 (2019.01); B29C 48/12 (2019.01); B29C 48/21 (2019.01); B29C 48/30 (2019.01); B29C 48/34 (2019.01); B29C 48/90 (2019.01); B29C 48/91 (2019.01); B29C 48/155 (2019.01); B29C 48/156 (2019.01); B29C 48/305 (2019.01); B29C 48/88 (2019.01); B29C 48/285 (2019.01); B29C 48/08 (2019.01); B29C 48/00 (2019.01); B29C 48/25 (2019.01); B29C 48/28 (2019.01); B29C 48/355 (2019.01); B29L 29/00 (2006.01); B29C 70/16 (2006.01); B29K 75/00 (2006.01); B29K 105/10 (2006.01); B29K 105/20 (2006.01); B29K 305/12 (2006.01); B29L 31/00 (2006.01); B29L 31/30 (2006.01); B29L 31/46 (2006.01);
U.S. Cl.
CPC ...
B29C 48/154 (2019.02); B29C 48/0013 (2019.02); B29C 48/06 (2019.02); B29C 48/07 (2019.02); B29C 48/08 (2019.02); B29C 48/12 (2019.02); B29C 48/155 (2019.02); B29C 48/156 (2019.02); B29C 48/21 (2019.02); B29C 48/25686 (2019.02); B29C 48/2883 (2019.02); B29C 48/30 (2019.02); B29C 48/307 (2019.02); B29C 48/34 (2019.02); B29C 48/90 (2019.02); B29C 48/908 (2019.02); B29C 48/91 (2019.02); B29C 48/911 (2019.02); B29C 48/914 (2019.02); B29C 48/916 (2019.02); B29C 48/919 (2019.02); B29C 48/0019 (2019.02); B29C 48/268 (2019.02); B29C 48/28 (2019.02); B29C 48/2886 (2019.02); B29C 48/355 (2019.02); B29C 48/904 (2019.02); B29C 48/905 (2019.02); B29C 48/906 (2019.02); B29C 48/9135 (2019.02); B29C 70/16 (2013.01); B29K 2075/00 (2013.01); B29K 2105/10 (2013.01); B29K 2105/106 (2013.01); B29K 2105/20 (2013.01); B29K 2305/12 (2013.01); B29L 2029/00 (2013.01); B29L 2031/003 (2013.01); B29L 2031/3029 (2013.01); B29L 2031/463 (2013.01); B29L 2031/709 (2013.01);
Abstract

A method of and apparatus for extruding an article of uniform cross-section, the article including a thermoplastic material and at least one cable for inhibiting stretch of the article. The cable is supplied to a respective tube and is conveyed between upstream and downstream ends. The thermoplastic material may be supplied to the downstream end of the tube. The thermoplastic material is brought together with the cable to embed the cable within the thermoplastic material, thereby forming a composite extrudate. The tube is configured to at least hinder movement of loose windings of the cable from the downstream end towards the upstream end, which may prevent or at least reduce incidence of 'birdcaging'.

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