GB1220140A - Improvements in double-walled metal flue pipes - Google Patents

Improvements in double-walled metal flue pipes

Info

Publication number
GB1220140A
GB1220140A GB5237068A GB5237068A GB1220140A GB 1220140 A GB1220140 A GB 1220140A GB 5237068 A GB5237068 A GB 5237068A GB 5237068 A GB5237068 A GB 5237068A GB 1220140 A GB1220140 A GB 1220140A
Authority
GB
United Kingdom
Prior art keywords
walls
wall portion
wall
pipe
male element
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
GB5237068A
Inventor
Alan Henry Towers
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
Priority to GB5237068A priority Critical patent/GB1220140A/en
Publication of GB1220140A publication Critical patent/GB1220140A/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
    • F16L39/00—Joints or fittings for double-walled or multi-channel pipes or pipe assemblies
    • F16L39/04—Joints or fittings for double-walled or multi-channel pipes or pipe assemblies allowing adjustment or movement
    • 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
    • F16L59/00—Thermal insulation in general
    • F16L59/06—Arrangements using an air layer or vacuum

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Flanged Joints, Insulating Joints, And Other Joints (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Exhaust Silencers (AREA)

Abstract

1,220,140. Double-walled pipe sections; pipe couplings. A. H. TOWERS. 21 Oct., 1969 [5 Nov., 1968], No. 52370/68. Headings F2G and F2P. A double-walled metal pipe section for connection with similar sections to form a flue pipe comprises substantially concentric inner and outer walls 11 and 12 respectively, the walls being connected together at one end thereof to form a male element 13 whilst the other ends of the walls are open to form an annular female element 14 adapted to receive the male element 13 of a like section. The outer wall 12 is provided with a pair of circumferential grooves 13a and 14a which respectively define the extent of the male and female elements 13 and 14 and also maintain the concentricity of walls 11 and 12. In a preferred embodiment the male element 13 includes an inner wall portion 11a of larger diameter than that of the remaining inner wall portion 11 and female element 14 includes an outer wall portion 12a of larger diameter than that of the remaining outer wall portion 12, thereby permitting mating of male element 13 with a female element 14, with inner wall portion 11a forming an abutment surface accommodating free expansion and contraction of the inner wall of an adjacent pipe section. Male element 13 includes a surface 11b of larger diameter than that of 11a, and connected to it by an inclined guide surface 11c, to facilitate formation of the pipe joint. A further inclined wall portion 11d brings inner wall 11 into contact with outer wall 12, the walls being folded radially inwardly to lock them together. Adjacent pipe sections are maintained in their assembled condition by means of a locking band 15 extending circumferentially about the joint, the locking band 15 comprising a generally cylindrical central portion 15a and radially inwardly extending circumferential grooves 15b at the edges which engage in the grooves 13a, 14a in the outer walls. Locking band 15 may be secured by a toggle clip (not shown) or other suitable means. The annular space between the inner and outer pipe walls may be filled with a mineral or fibre thermal insulation.
GB5237068A 1968-11-05 1968-11-05 Improvements in double-walled metal flue pipes Expired GB1220140A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5237068A GB1220140A (en) 1968-11-05 1968-11-05 Improvements in double-walled metal flue pipes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5237068A GB1220140A (en) 1968-11-05 1968-11-05 Improvements in double-walled metal flue pipes

Publications (1)

Publication Number Publication Date
GB1220140A true GB1220140A (en) 1971-01-20

Family

ID=10463663

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5237068A Expired GB1220140A (en) 1968-11-05 1968-11-05 Improvements in double-walled metal flue pipes

Country Status (1)

Country Link
GB (1) GB1220140A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0013458A1 (en) * 1979-01-09 1980-07-23 Wavin B.V. A plastics pipe provided with a socket and method of forming such a plastics pipe
EP0013457A1 (en) * 1979-01-09 1980-07-23 Wavin B.V. A plastics pipe part with socket provided with longitudinally extending passages
US4432395A (en) * 1979-01-09 1984-02-21 Wavin B.V. Pipe part with socket provided with longitudinally extending channels
WO2005008118A1 (en) * 2003-07-14 2005-01-27 American Boa, Inc. Double wall pipe assembly

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0013458A1 (en) * 1979-01-09 1980-07-23 Wavin B.V. A plastics pipe provided with a socket and method of forming such a plastics pipe
EP0013457A1 (en) * 1979-01-09 1980-07-23 Wavin B.V. A plastics pipe part with socket provided with longitudinally extending passages
US4432395A (en) * 1979-01-09 1984-02-21 Wavin B.V. Pipe part with socket provided with longitudinally extending channels
WO2005008118A1 (en) * 2003-07-14 2005-01-27 American Boa, Inc. Double wall pipe assembly

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