GB938049A - Improvements in or relating to flexible tubing - Google Patents

Improvements in or relating to flexible tubing

Info

Publication number
GB938049A
GB938049A GB4241261A GB4241261A GB938049A GB 938049 A GB938049 A GB 938049A GB 4241261 A GB4241261 A GB 4241261A GB 4241261 A GB4241261 A GB 4241261A GB 938049 A GB938049 A GB 938049A
Authority
GB
United Kingdom
Prior art keywords
tube
flexible
metal tube
mandrel
expanded
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB4241261A
Inventor
Felix Waldt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ENGL Ltd J
Original Assignee
ENGL Ltd J
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ENGL Ltd J filed Critical ENGL Ltd J
Priority to GB4241261A priority Critical patent/GB938049A/en
Publication of GB938049A publication Critical patent/GB938049A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/14—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics
    • F16L11/16—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics wound from profiled strips or bands

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

938,049. Flexible tubes. J. ENGL Ltd. May 23, 1962 [Nov. 28, 1961], No. 42412/61. Class 99(2). In a method of making a flexible tube of the kind wherein a sleeve of flexible material, such as polyvinyl chloride, is disposed around an inner, flexible metal tube formed by helically winding metal strip and having the edges of adjacent turns interlocked so as to permit of limited relative movement between the turns, an expanded tube having a preformed, helically convoluted surface is placed over the metal tube and allowed to contract and grip the metal tube with the groove of the expanded tube disposed in the groove of the metal tube. A flexible tube is placed on a smooth mandrel and the latter is rotated while a tool having a wedge-shaped end is moved parallel to the axis of the mandrel to form a shallow helical depression in the tube, the tool or the mandrel being heated; alternatively, the mandrel has a helical groove formed therein. The tube is expanded by air or other gas pressure for insertion therein of the metal tube and then allowed to contract on to the metal tube.
GB4241261A 1961-11-28 1961-11-28 Improvements in or relating to flexible tubing Expired GB938049A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4241261A GB938049A (en) 1961-11-28 1961-11-28 Improvements in or relating to flexible tubing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4241261A GB938049A (en) 1961-11-28 1961-11-28 Improvements in or relating to flexible tubing

Publications (1)

Publication Number Publication Date
GB938049A true GB938049A (en) 1963-09-25

Family

ID=10424298

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4241261A Expired GB938049A (en) 1961-11-28 1961-11-28 Improvements in or relating to flexible tubing

Country Status (1)

Country Link
GB (1) GB938049A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2293222A (en) * 1994-09-16 1996-03-20 Stuart Grant Jones Convoluted plastics tube
CN104185515A (en) * 2013-02-28 2014-12-03 株式会社昭和螺旋管制作所 Interlock tube manufacturing method and manufacturing device therefor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2293222A (en) * 1994-09-16 1996-03-20 Stuart Grant Jones Convoluted plastics tube
GB2293222B (en) * 1994-09-16 1998-09-23 Stuart Grant Jones Forming convoluted tubes
CN104185515A (en) * 2013-02-28 2014-12-03 株式会社昭和螺旋管制作所 Interlock tube manufacturing method and manufacturing device therefor
US9945499B2 (en) 2013-02-28 2018-04-17 Showa Rasenkan Seisakusho Co., Ltd. Method and apparatus for manufacturing interlocking pipe

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