GB2021033A - Blank for pipe manufacture - Google Patents

Blank for pipe manufacture

Info

Publication number
GB2021033A
GB2021033A GB7910939A GB7910939A GB2021033A GB 2021033 A GB2021033 A GB 2021033A GB 7910939 A GB7910939 A GB 7910939A GB 7910939 A GB7910939 A GB 7910939A GB 2021033 A GB2021033 A GB 2021033A
Authority
GB
United Kingdom
Prior art keywords
blank
pipe
bulge
section
adjacent
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.)
Granted
Application number
GB7910939A
Other versions
GB2021033B (en
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB2021033A publication Critical patent/GB2021033A/en
Application granted granted Critical
Publication of GB2021033B publication Critical patent/GB2021033B/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/56—Winding and joining, e.g. winding spirally
    • B29C53/58—Winding and joining, e.g. winding spirally helically
    • B29C53/78—Winding and joining, e.g. winding spirally helically using profiled sheets or strips
    • 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
    • F16L9/00—Rigid pipes
    • F16L9/16—Rigid pipes wound from sheets or strips, with or without reinforcement

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

Blank for pipe manufacture, intended to be wound helically so that a joint is formed between adjacent turns in the helically wound blank thereby, that a portion on the lateral edge (11) of the blank in a turn is fitted into a portion of the remaining lateral edge (12) of the blank in an adjacent turn. A portion (13) located between said two portions on the lateral edges of the blank has an outward bulge enclosing a cavity. Said bulge is of such a shape that the surface (18) of the cavity enclosed in a section through the transverse direction of the blank is substantially greater than the surface (21) in said section between the two adjacent edges (19, 20) on the blank, which are the places of attachment for the bulge. The surface (18) of the cavity further includes distances (22) in said section substantially in parallel with the transverse direction of the wall blank, which distances are substantially longer than the distance (21) between said adjacent edges (19, 20) on the blank. When forming a pipe of the blank, the bulge is located on the outside of the completed pipe. The bulge has the twofold object of providing a pipe formed of the blank with the function of an elastic bellows, in order to reduce stresses at movements of the pipe, and of rendering the pipe more rigid against compression.
GB7910939A 1977-08-02 1978-07-17 Blank for pipe manufacture Expired GB2021033B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7708787A SE7708787L (en) 1977-08-02 1977-08-02 SUBJECT FOR MANUFACTURE OF TUBE

Publications (2)

Publication Number Publication Date
GB2021033A true GB2021033A (en) 1979-11-28
GB2021033B GB2021033B (en) 1982-05-06

Family

ID=20331944

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7910939A Expired GB2021033B (en) 1977-08-02 1978-07-17 Blank for pipe manufacture

Country Status (6)

Country Link
EP (1) EP0006882A1 (en)
JP (1) JPS5452184A (en)
DK (1) DK332778A (en)
GB (1) GB2021033B (en)
SE (1) SE7708787L (en)
WO (1) WO1979000079A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2128709A (en) * 1982-10-16 1984-05-02 C J Cawte Drainage pipes
USD968335S1 (en) * 2020-05-29 2022-11-01 Xinghua Wei Socket
USD971850S1 (en) * 2020-08-17 2022-12-06 Yuyi Lee Power solution dome

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4457787A (en) * 1982-09-21 1984-07-03 Chugai Denki Kogyo Kabushiki-Kaisha Internal oxidation method of Ag alloys
US4664314A (en) * 1982-10-01 1987-05-12 Spraying Systems Co. Whirl spray nozzle

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL31940A (en) * 1968-04-05 1971-08-25 Dynamit Nobel Ag Sections from thermoplastic resins
DE2321553C2 (en) * 1972-08-30 1983-10-20 Steward Plastics, Inc., Santa Ana, Calif. Device for producing a helically wound flexible pipe

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2128709A (en) * 1982-10-16 1984-05-02 C J Cawte Drainage pipes
USD968335S1 (en) * 2020-05-29 2022-11-01 Xinghua Wei Socket
USD971850S1 (en) * 2020-08-17 2022-12-06 Yuyi Lee Power solution dome

Also Published As

Publication number Publication date
GB2021033B (en) 1982-05-06
SE7708787L (en) 1979-02-03
DK332778A (en) 1979-02-03
WO1979000079A1 (en) 1979-02-22
JPS5452184A (en) 1979-04-24
EP0006882A1 (en) 1980-01-23

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee