GB1343695A - Corrugated tubes of thermo-plastic synthetic resin - Google Patents

Corrugated tubes of thermo-plastic synthetic resin

Info

Publication number
GB1343695A
GB1343695A GB1510671A GB1510671A GB1343695A GB 1343695 A GB1343695 A GB 1343695A GB 1510671 A GB1510671 A GB 1510671A GB 1510671 A GB1510671 A GB 1510671A GB 1343695 A GB1343695 A GB 1343695A
Authority
GB
United Kingdom
Prior art keywords
synthetic resin
elements
ring
shaped elements
thermo
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
GB1510671A
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.)
GMT SA
Lefebvre P A
Original Assignee
GMT SA
Lefebvre P A
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 GMT SA, Lefebvre P A filed Critical GMT SA
Publication of GB1343695A publication Critical patent/GB1343695A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/0015—Making articles of indefinite length, e.g. corrugated tubes
    • B29C49/0021—Making articles of indefinite length, e.g. corrugated tubes using moulds or mould parts movable in a closed path, e.g. mounted on movable endless supports
    • 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
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L11/11—Hoses, i.e. flexible pipes made of rubber or flexible plastics with corrugated wall

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

1343695 Corrugated plastics pipes GMT SA and P A LEFEBVRE 14 May 1971 [14 May 1970] 15106/71 Heading F2P A corrugated tube, of thermoplastic synthetic resin, and having resistance to crushing, comprises successive pairs of rectilinear ring shaped elements 3, 3a, the elements of each pair being connected by an arcuate portion 4 which is distortable and of such length that when flattened by external radial pressure f1 it brings the ring-shaped elements into parallel relationship 3 1 , 3 1a . Pairs of elements are connected by straight portions 2 and preferably the radii 5, 7, 11, of the arcs connecting the ring-shaped elements to the arcuate and straight portions are less than the thickness of the tube wall. Examples of resins used are p.v.c., polypropylene, polyamide, polyethylene and polycarbonate.
GB1510671A 1970-05-14 1971-05-14 Corrugated tubes of thermo-plastic synthetic resin Expired GB1343695A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7017671A FR2171844B1 (en) 1970-05-14 1970-05-14

Publications (1)

Publication Number Publication Date
GB1343695A true GB1343695A (en) 1974-01-16

Family

ID=9055548

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1510671A Expired GB1343695A (en) 1970-05-14 1971-05-14 Corrugated tubes of thermo-plastic synthetic resin

Country Status (3)

Country Link
DE (2) DE2166064A1 (en)
FR (1) FR2171844B1 (en)
GB (1) GB1343695A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6096975A (en) * 1996-02-28 2000-08-01 Sofanou S.A. Split grooved sheath and method and apparatus for making same

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0067473B1 (en) * 1981-06-15 1989-08-09 Wavin B.V. Apparatus for making profiled plastics tube
DE4432584C1 (en) * 1994-09-13 1996-02-29 Inventa Ag Polymer pipe
CA2261073A1 (en) * 1997-05-20 1998-11-26 Manfred A. A. Lupke Method and apparatus for making plastic pipe without mechanical pressure on inner pipe wall
DE19741405B4 (en) * 1997-09-19 2004-01-29 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Cavity wall socket suitable for connection with empty pipes for the construction of a pre-installation and procedure for it
FR2825443B1 (en) 2001-06-05 2003-09-19 Sofanou Sa HINGE TUBULAR SHEATH

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH329850A (en) * 1955-01-12 1958-05-15 Phineas Zallea James Method and device for the manufacture of pipe equalizers and pipe equalizers manufactured according to the method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6096975A (en) * 1996-02-28 2000-08-01 Sofanou S.A. Split grooved sheath and method and apparatus for making same

Also Published As

Publication number Publication date
DE2124094A1 (en) 1972-05-10
DE2124094C3 (en) 1974-06-06
FR2171844A1 (en) 1973-09-28
FR2171844B1 (en) 1974-05-24
DE2124094B2 (en) 1973-11-15
DE2166064A1 (en) 1972-11-09

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees