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US3495628A - Tubular construction - Google Patents

Tubular construction Download PDF

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Publication number
US3495628A
US3495628A US486086A US3495628DA US3495628A US 3495628 A US3495628 A US 3495628A US 486086 A US486086 A US 486086A US 3495628D A US3495628D A US 3495628DA US 3495628 A US3495628 A US 3495628A
Authority
US
United States
Prior art keywords
tube
strip
wall
walls
ribs
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 - Lifetime
Application number
US486086A
Other languages
English (en)
Inventor
Jacob C P Boender
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.)
Renolit Nederland BV
Original Assignee
Polva Nederland BV
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 Polva Nederland BV filed Critical Polva Nederland BV
Application granted granted Critical
Publication of US3495628A publication Critical patent/US3495628A/en
Assigned to DIERINCKX, VICTOR WILLIAM FRANCOIS MARIE (LIQUIDATOR) reassignment DIERINCKX, VICTOR WILLIAM FRANCOIS MARIE (LIQUIDATOR) APPOINTMENT OF LIQUIDATOR, EFFECTIVE JANUARY 14, 1985. Assignors: POLVA-NEDERLAND B.V., (IN LIQUIDATION)
Assigned to DRAKA POLVA B.V., A NETHERLANDS COMPANY reassignment DRAKA POLVA B.V., A NETHERLANDS COMPANY ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: POLVA-NEDERLAND B.V., A COMPANY OF THE NETHERLANDS
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B21C37/151—Making tubes with multiple passages
    • 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
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/04—Making uncoated products by direct extrusion
    • B21C23/14—Making other products
    • 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
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/04—Making uncoated products by direct extrusion
    • B21C23/14—Making other products
    • B21C23/142—Making profiles
    • B21C23/145—Interlocking profiles
    • 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
    • B21C37/12—Making tubes or metal hoses with helically arranged seams
    • B21C37/124—Making tubes or metal hoses with helically arranged seams the tubes having a special shape, e.g. with corrugated wall, flexible tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/06—Bending into helical or spiral form; Forming a succession of return bends, e.g. serpentine form
    • 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
    • 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
    • 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
    • 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
    • F16L9/18—Double-walled pipes; Multi-channel pipes or pipe assemblies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24628—Nonplanar uniform thickness material
    • Y10T428/24661—Forming, or cooperating to form cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24744—Longitudinal or transverse tubular cavity or cell

Definitions

  • FIGJ. 15 16 M/fimw INVENTOR UMZZ $4 Feb. 17, 1970 J. c. QQENDER 3,495,628
  • a tubular construction formed of material capable of being wound in a spiral having an inner wall and an outer wall spaced from but connected to the inner wall as by ribs, ridges or other closed formation.
  • the marginal edges of the inner and outer walls are secured together, with the respective opposite marginal edges of said walls spirally overlapping with one another, with the outer marginal edge coacting with and overlapping the outer wall and the inner marginal edge coacting with and overlapping the inner wall.
  • a finished tube is thereby formed having continuous smooth inner and outer wall surfaces.
  • the characteristic feature of the tube construction is, that the latter comprises an inner and outer wall, being interconnected and kept apart by means of cylinders, ribs, ridges, or the like, spirally wound around the axis of the tube.
  • the wall construction of the new tube contains relatively little material, therefore, it is light of construction, While naturally the price per running meter may be considerably less than in the case where the walls of the tube are made as a solid mass and the construction would have to absorb the same pressure on top.
  • An efficient construction is one made up out of a double-walled material, having spaced rigs or ridges, said strip being wound like a spiral, wherein the parts of the rim are joined together by welding, gluing or in some other way.
  • a suitable method is for the parts of the rim of the strip of duoble-walled material to be flattened and joined together while overlapping.
  • An eflicient joining surface is obtained when the rim parts of the strip of double-walled material have been flattened gradually.
  • the spaced ribs-or ridges may, for example, be at right angles with the walls of the tube.
  • spaced ribs or ridges of a portion thereof are at some other angle than a right angle to the walls of the tube.
  • spaced ribs or ridges or a portion thereof may also be bent, and more in particular, form a closed figure.
  • the parts of the rim which will constitute the actual adhesion points When the tube is being wound, may be glued or otherwise joined together. This can be combined with a mechanical way of joining, in particular a clamping lock.
  • the invention relates to a method for producing a tube or similar construction, whereby, according to the invention, a cylinder, one or more ribs or ridges or such like are spirally wound around an inner Wall and connected to said wall, while an outer wall is applied to the construction so formed and fastened thereto.
  • a strip of double-walled material having spaced ribs or ridges is taken as a starting point, said strip being wound spirally on a spindle, the rim parts being joined one to the other.
  • This interconnecting may be achieved by means of a suitable glue or some other means, for example by welding.
  • a further possibility is, as mentioned above, a combination having a mechanical connection, i.e. a clamping lock between the rim parts per se.
  • a tube construction according to the invention may also be produced in a continuous working, with heated extrudable material being used for the material.
  • the strip of material from which is started is in that case extruded continuously in a device suitable to the purpose, and on leaving this device said strip is immediately wound to a spindle in a generally known manner.
  • FIG. 1 is a vertical section through a strip of material according to the invention having cells, the wall thereof being at right angles;
  • FIG. 2 is a vertical section of a strip of material according to the invention, wherein at least several of the spacing ribs are at other angles than at right angles with the tube walls;
  • FIGURE 3 is a vertical section of a strip of material wherein the distance ribs or ridges are bent, forming, more in particular, a close figure;
  • FIGURE 4 is an embodiment corresponding mainly with that of FIGURE 1, the parts of the rim, however, producing a mechanical closure;
  • FIG. 5 is a perspective view showing the forming of a tube from the strip material of FIG. 1.
  • the tube construction according to the invention is manufactured from a strip of double-walled material, the the walls of this material being designated in the drawing by the numerals 1 and 2 (see FIGURE 1). Between said walls 1 and 2 spacing ribs or ridges are found, their heights, and thickness being adapted to the expected load, according to the use to which the tube will have to be turned. Also, the number of cells originating between walls 1 and 2 and the ribs or ridges 3 may deviate from FIGURE 1.
  • the parts of the rim or margins of the strip are flattened, such, that in the case a tube is folded from the strip, said parts of the margin will overlap, and taken together will have the same thickness as the total thickness of the double-wall. In the case as reproduced in FIG.
  • tubes may be wound having a relatively large diameter in which case said tubes are resistant to a considerable outside pressure.
  • the requirements in the way of material are comparatively small, while the weight per running length unit is low.
  • tubes With a strip of doublewalled material according to FIG. 1, tubes may be folded having a passage of 70 centimeters.
  • the length of the profile in that case is in the range of 15 mm.
  • the width of the ribs and ridges is in the range of 1.5 mm.
  • a tube of this kind will have a resistance against a pressure on the top of about eight times that of a tube with a massive wall having an identical passage, an identical weight and identical material. From FIG. 1 it is clearly shown how large a joining surface is formed between the parts of the rim producing a tight closure against mediums.
  • FIGURE 2 shows a vertical section of a cross-section of a double-walled profile strip deviating slightly from the cross-section as given in FIG. 1.
  • the parallel walls are here designated by numbers 8 and 9, and a plurality of ribs, one of which is given by number 10, is at another angle than a right angle with walls 8 and 9.
  • FIGURE 3 shows the case where the ribs and ridges are bent and make, more in particular, a closed figure, such as a circle 13.
  • the parallel walls are designated by numbers 11 and 12 in FIG. 3.
  • FIGURE 4 shows a special way of fastening of the parts of the rim or margins of the double-walled strip.
  • the parallel walls are here given as 14 and 15 and the ridges as 16.
  • the ridges are perpendicular to walls 14 and 15.
  • the flattened parts of the rim are made in the shape of a hook, such, that the left profile 17 in FIG. 4 is completely complementary to the right profile 18 in said figure, wherein not only a clamping joint is found but also welding or glueing may be applied.
  • the strip of material may be extruded and wound around the spindle in heated condition.
  • a suitable agglutinant may be used, or the parts of the rim are welded together.
  • a tube formed by spirally winding around an axis an elongated strip of flexible material such as heated plastic material having opposed marginal edges with adjacent turns of the strip secured together with their opposite marginal edges overlapping; said strip material which forms said tube comprising an inner wall and an outer wall radially spaced from said inner wall when wound in tube form; the opposed marginal edges of said flexible strip being constituted by laterally opposite extensions of said respective walls disposed in non-coplanar but parallel planes which are parallel to the axis of said tube, with one of said edges constituting an inner marginal edge extending from and coplanar with the inner wall in one generally axial direction of the tube; and with the other constituting an outer marginal edge extending from and coplanar with the outer wall in the opposite generally axial direction of the tube; means interconnecting said spaced walls; and said respective opposite marginal edges of said walls spirally overlapping with one another with said outer marginal edge coacting with and overlapping said outer wall of the next adjacent turn of said strip and said inner marginal edge co acting with and overlapping said inner wall of the next adjacent turn of
  • a tube as defined in claim 1 wherein said means interconnecting said spaced walls include ribs integrally secured to and between said walls in a generally transverse manner relative thereto, and a pair of said ribs being spaced from each other and spaced inwardly from the terminl edge portion of each opposite edge to define abbutable wall portions when said strip is formed into said tube.
  • a tube as defined in claim 3 wherein the strip material from which the tube is formed prior to its being spirally wound is of identical but oppositely disposed configuration about a longitudinal centerline of the elongated strip material to facilitate the forming of said tube by winding the strip material in either direction.
  • a tube as defined in claim 1 wherein said means interconnecting said inner and outer spaced walls include ribs disposed at right angles and secured to said Walls.
  • a tube as defined in claim 1 wherein said means interconnecting said spaced walls include ribs, some of which are disposed at an angle to said walls and others including a pair of ribs disposed transversely to said walls and spaced from each other and spaced inwardly from the terminal edge portion of each opposite edge, to define interengageable wall portions when said strip is spirally formed into said tube.
  • a tube as defined in claim 1 wherein said means interconnecting said spaced walls include generally transversely disposed ribs which are bent so as to form closed figures between said walls and each other.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
US486086A 1964-09-14 1965-09-09 Tubular construction Expired - Lifetime US3495628A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL646410674A NL150210B (nl) 1964-09-14 1964-09-14 Buigzame strook voor het schroefvormig wikkelen tot een buis.

Publications (1)

Publication Number Publication Date
US3495628A true US3495628A (en) 1970-02-17

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ID=19791007

Family Applications (1)

Application Number Title Priority Date Filing Date
US486086A Expired - Lifetime US3495628A (en) 1964-09-14 1965-09-09 Tubular construction

Country Status (5)

Country Link
US (1) US3495628A (nl)
BE (1) BE669613A (nl)
DE (1) DE1284746B (nl)
GB (1) GB1124656A (nl)
NL (1) NL150210B (nl)

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US4351868A (en) * 1981-04-15 1982-09-28 Toyoda Gosei Co., Ltd. Molding
US4362187A (en) * 1980-08-05 1982-12-07 Manville Service Corporation Spirally-formed thermoplastic tube
US4531551A (en) * 1982-12-14 1985-07-30 Siemens Aktiengesellschaft Double-walled, flexible hose
US4628966A (en) * 1984-08-09 1986-12-16 Shiro Kanao Synthetic resin pipe for underground use
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US20160354573A1 (en) 2012-11-14 2016-12-08 Matthew Liam Buswell Zone heating for respiratory circuits
CN110630828A (zh) * 2019-10-10 2019-12-31 张家港戴恩机械有限公司 一种中空壁多孔加筋缠绕波纹管
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US11571536B2 (en) 2011-07-13 2023-02-07 Fisher & Paykel Healthcare Limited Impeller and motor assembly
US11666720B2 (en) 2015-12-02 2023-06-06 Fisher & Paykel Healthcare Limited Flow path sensing for flow therapy apparatus
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DE1284746B (de) 1968-12-05
GB1124656A (en) 1968-08-21
NL6410674A (nl) 1966-03-15
BE669613A (nl) 1965-12-31
NL150210B (nl) 1976-07-15

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