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Method And Apparatus For Extrusion Of Thermoplastic Handrail

A thermoplastic material and equipment technology, applied in applications, household components, household appliances, etc., can solve the problems of a large amount of labor and laborious manufacturing process, achieve good grip and improve the strength of the flange

Active Publication Date: 2018-02-16
EHC CANADA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This manufacturing process is laborious, requires a lot of labor, and results in a production rate determined by the rate of the rubber's curing reaction—typically about 10 minutes—and the length of the mold

Method used

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  • Method And Apparatus For Extrusion Of Thermoplastic Handrail
  • Method And Apparatus For Extrusion Of Thermoplastic Handrail
  • Method And Apparatus For Extrusion Of Thermoplastic Handrail

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Embodiment Construction

[0053] Various apparatus or methods are described below to provide examples of embodiments of each claimed invention. None of the embodiments described below limit any claimed invention, and any claimed invention may encompass apparatus and methods other than those described below. The claimed invention is not limited to devices and methods having all of the features of any one device or method described below, nor to features common to multiple or all devices or methods described below. The devices or methods described below may not be embodiments of any claimed invention. Any invention disclosed in the apparatus or method described below that is not claimed in this document may be the subject of another protective instrument, such as a continuation patent application, and it is not the applicant's, inventor's and / or proprietor's intention to adopt it in this document disclaims, disclaims, or dedicates any such invention to the public.

[0054] first reference figure 1 , a...

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PUM

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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".

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Application No. 14 / 744,690, filed June 19, 2015, the entire contents of which are incorporated herein by reference. technical field [0003] The present specification relates generally to thermoplastic handrails for escalators, moving walkways, and other transportation equipment, and to methods and apparatus for manufacturing such handrails or other items of substantially constant cross-section by continuous extrusion techniques. Background technique [0004] The following paragraphs are not an admission that anything discussed in the paragraphs is prior art or part of the knowledge of a person skilled in the art. [0005] Handrails are a known and standard part of any escalator, moving ramp, moving walk or other similar transportation equipment. Conventionally, such armrests are mainly formed of rubber that constitutes the outer cover of the armrest and forms a comfortable "C" s...

Claims

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Application Information

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IPC IPC(8): B29C47/02B66C23/24E04F11/18B29C48/06B29C48/12B29C48/28B29C48/30B29C48/305B29C48/34B29C48/355B29C48/90
CPCB29L2029/00B29K2105/106B29C48/0013B29C48/25686B29C48/268B29C48/154B29C48/34B29C48/156B29C48/307B29C48/2883B29C48/0019B29C48/28B29C48/355B29C48/905B29C48/906B29L2031/709B29C48/12B29C48/06B29C48/08B29C48/155B29C48/91B29C48/916B29C48/919B29C48/908B29C70/16B29C48/2886B29C48/9135B29C48/904B29K2105/10B29L2031/463B29L2031/3029B29L2031/003B29K2075/00B29K2305/12B29K2105/20B29C48/07B29C48/21B29C48/90B29C48/911B29C48/914
Inventor 安德鲁·奥利弗·肯尼道格拉斯·詹姆斯·韦瑟罗尔维卡尔·海德罗纳德·哈罗德·鲍尔亚历山大·斯图尔特·康斯雷金纳德·安东尼·布特韦尔
Owner EHC CANADA
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