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WO1991011012A1 - Conduit en plastique synthetique souple - Google Patents

Conduit en plastique synthetique souple Download PDF

Info

Publication number
WO1991011012A1
WO1991011012A1 PCT/US1990/002881 US9002881W WO9111012A1 WO 1991011012 A1 WO1991011012 A1 WO 1991011012A1 US 9002881 W US9002881 W US 9002881W WO 9111012 A1 WO9111012 A1 WO 9111012A1
Authority
WO
WIPO (PCT)
Prior art keywords
inner portion
annular
helical
rib portions
helical rib
Prior art date
Application number
PCT/US1990/002881
Other languages
English (en)
Inventor
Robert L. Heimann
Wayne L. Soucie
David R. Webb
Original Assignee
Orscheln Co.
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 Orscheln Co. filed Critical Orscheln Co.
Priority to EP90124918A priority Critical patent/EP0438745A1/fr
Publication of WO1991011012A1 publication Critical patent/WO1991011012A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D23/00—Producing tubular articles
    • B29D23/001—Pipes; Pipe joints
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0013—Extrusion moulding in several steps, i.e. components merging outside the die
    • B29C48/0015—Extrusion moulding in several steps, i.e. components merging outside the die producing hollow articles having components brought in contact outside the extrusion die
    • B29C48/0016—Extrusion moulding in several steps, i.e. components merging outside the die producing hollow articles having components brought in contact outside the extrusion die using a plurality of extrusion dies
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/06—Rod-shaped
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • B29C48/151—Coating hollow articles
    • B29C48/152—Coating hollow articles the inner surfaces thereof
    • B29C48/153—Coating both inner and outer surfaces
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/22—Articles comprising two or more components, e.g. co-extruded layers the components being layers with means connecting the layers, e.g. tie layers or undercuts
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/355—Conveyors for extruded articles
    • 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
    • B29C53/14—Twisting
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C1/00—Flexible shafts; Mechanical means for transmitting movement in a flexible sheathing
    • F16C1/26—Construction of guiding-sheathings or guiding-tubes

Definitions

  • This invention relates to a cable assembly for mechanical control cable installations, such as push-pull cables, throttle cables and the like, including a flexible synthetic plastic outer sleeve member having an annular inner portion containing a bore for slidably receiving a force-transmitting inner member, a plurality of integral helical rib portions extending radially outwardly from the outer periphery of the sleeve inner portion, and a protective annular outer portion arranged concentrically about the helical rib portions.
  • thermoplastics including acrylonitrile-butadiene- styrene terpolymers, acetal resins, acrylic resins, cellulosic resins, fluoroplastics, ionomers, methylpentene resins, nylons, polyester resins, polyphenylene ethers, polyallomers, polycarbonates, polyethylene, polyimides, polypropylene, modified polystyrenes, polysufones, polyvinyl chloride, and many others.
  • thermoplastic polyester resins of the diol terephthalate type and special mention is made of poly(1,4-butylene terephthalate) .
  • the outer sleeve member of a cable assembly which is formed of polyamid, polyacetal, polyallylate, polyester, polyethylene, polyfluorocarbon, acrylonitrile-butadiene-styrene copolymer, acrylonitrile-styrene-copolymer, polypropylene or the like.
  • a liner member is provided having an inner periphery formed with a plurality of helically-spiraled lubricant grooves, and an outer periphery formed with a plurality of depressed portions which run the whole length of the liner.
  • the present invention was developed to provide an improved cable assembly that is stronger, more durable and having a synthetic plastic outer sleeve member that is less expensive to produce than the known cable assemblies, and which has a greatly increased operating life.
  • a primary object of the present invention is to provide a cable assembly including flexible synthetic plastic outer sleeve member having an annular inner portion containing a bore for slidably receiving a force-transmitting inner member, a plurality of integral helical ribs extending radially outwardly from the outer periphery of, and longitudinally relative to, said sleeve inner portion, and a protective annular oute portion arranged concentrically about said helical rib portions.
  • the protective outer portion is extruded concentrically about, and completely fills the spaces between, the helical rib portions.
  • the protective outer portion is tubular and engages only the outermost surfaces of the rib portions, thereby to define helical noise-baffling passages between the helical ribs, which reduce weight while distributing bending and compressive stresses over reduced cross-sections.
  • This construction reduces intraplanar stresses allowing for the use of higher strength engineering polymers while maintaining flexibility.
  • Another object of the invention is to provide a flexible synthetic plastic mechanical control housing for, but not limited to, push-pull application cable routing comprised of a smooth inner member supporting bore surrounded by helically radiating tensile/compressive load-bearing splines encased within a protective synthetic plastic jacket.
  • Another object is to provide a novel flexible synthetic plastic guide conduit, and more particularly, to a flexible conduit for housing linear unidirectional, reciprocating, or rotating cable assemblies, and for providing a superior support structure fabricated by a cost effective process.
  • a protective outer sleeve is connected with radially disposed helical ribs on the annular inner portion and extending longitudinally the length of the sleeve while rotating circumfer- entially, thereby redistributing tensile and compressive loading forces induced by bending of th conduit evenly over the radially spaced splines.
  • This integral assembly eliminates the problems of movement and distortion inherent with conventional conduit while prohibiting the crushing effect of compressive forces inherent with reciprocating cabl assemblies induced by operating sequences or installation, handling, shipping, and the like, while the extrusion of the exterior membrane offers protection from detrimental compounds found in the application environment.
  • the present invention provides a cost effectiv alternative to solid plastic construction by using high molecular weight engineering thermoplastic extruded to a configuration retaining an extremely high strength-to-weight ratio capable of being fabricated to any required length.
  • Another object is to provide a product capable of being bent without regard to direction by incorporating internal rib structural elements extending the length of the assembly which by virtu of their radial juxtaposition produce a structure sufficiently rigid to retain a circular orifice while sustaining lateral and columnar loadings.
  • Still another object is to provide through the use of HM engineering thermoplastics, inherently self lubricating, an extruded tubular product of continuously smooth bore whereby a similar coated inner member may slide freely, thereby maximizing the potential of a barrier film lubrication system using minimal material amounts.
  • a further object is to supply an exceptionally strong platform for anchoring organic polymeric end-fittings so molded as to mechanically interlock with the conduit while eliminating heat scoring requirement and laywires prevalent in previous constructions that might possibly damage the molds used to fabricate said end-fittings.
  • a further object resides in the provision of substrate capable of meeting a constant changing contact area and distributive or disruptive forces by varying the rate of helical twist and/or the height of the radially disposed splines. Additional modifications may be easily accomplished with selective usage of outer synthetic plastic layers for thermal, electrical, corrosive, shock, chemical and other unspecified protection as may be required.
  • a still further object is to reduce to a minimum or eliminate any backlash transmission by the cable structure resulting from the movement differential between the core element and outer protective structure by uniting these two substructures together in a single cohesive product
  • Yet another object is to provide for a cable assembly of particularly silent operation by utilizing the internal baffling inherent in this design, while the protective outer coating reduces noise generated by the vibration induced in an automotive environment.
  • Yet another object of this invention is to provide a component producible at extremely cost effective levels by replacing slow conventional out-dated technology with high speed precision extrusion processes monitored and controlled throug sophisticated statistical process control data acquisition equipment as demanded by current world class industrial standards.
  • Fig. 1 is a side elevational view, with certai parts broken away, of a first embodiment of the cable assembly of the present invention
  • Fig. 2 is a sectional view taken along line 2- of Fig. 1;
  • Fig. 3 is a detailed side elevational view of the inner portion of the outer sleeve member of the apparatus of Fig. 1;
  • Fig. 4 is a sectional view taken along the line 4-4 of Fig. 3;
  • Fig. 5 is a side elevational view of a second embodiment of the cable assembly of the present invention.
  • Fig. 6 is a sectional view taken along line 6-6 of Fig. 5.
  • the cable assembly which is suitable for various mechanical control cable applications such as push-pull cables, throttle control cables or the like — includes a flexible tubular outer sleeve member 2 having a continuous annular inner portion 4 containing a bore having a smooth wall surface 6.
  • the inner portion On its outer periphery, the inner portion is provided with a plurality of radially outwardly extending helical rib portions 8 that extend helically longitudinally of the inner portion, as shown in Fig. 1 and 3.
  • This inner portion is formed of a relatively hard synthetic plastic material, such as the product NORYL GTX 910 produced by the General Electric Company, or other suitable polymeric material.
  • a protective outer cable portion 10 Formed (preferably by extrusion) concentrically about the inner portion from a flexible, relatively soft protective corrosion-resistant synthetic plastic material (preferably TPR, a thermoplastic rubber, or SANTOPRENE, produced by Monsanto or othe suitable polymeric thermoplastic material) is a protective outer cable portion 10.
  • this protective outer portion completel fills the spaces between the helical ribs, as shown in Fig. 2.
  • a inner force-transmitting metal core member 12 Arranged for longitudinal sliding movement within the bore of the flexible outer sleeve 2 is a inner force-transmitting metal core member 12, such as a unitary rod-like member or a stranded member formed from metal strands, as is known in the art.
  • the core member is coated with a layer 14 of self-lubricating material (such as nylon or a polyester) compatible with the material from which the annular inner portion 4 is formed.
  • the inner annular portion 4 and the helical ribs 8 impart strength to the outer sleeve member and that the outer annular portion 10 protectively covers the inner portion against corrosion moisture, ice, mud, sand and othe impurities.
  • the flexible outer synthetic plastic sleeve member 2 ' has an annular inner portion 4 ' having a smooth inner wall surface 6 ' , a plurality of integral radially-outwardly extending helical rib portions 8 ' , and a generally tubular outer portion 10' integral with the outer extremities of the helical rib portions 8 ' , thereby to define between the helical ribs a plurality of helical noise- baffling chambers 16.
  • the sleeve 2' is formed by extrusion from a flexible relatively hard synthetic plastic material, such as NORYL GTX 625 produced by General Electric Company, with the inner, helical rib and outer portions being integral.
  • the convention metal inner core member 12 ' Arranged for sliding movement within the bore 6' contained in the annular inner portion 4' is the convention metal inner core member 12 ' for transmitting tensile force to the associated load means.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Flexible Shafts (AREA)

Abstract

Un ensemble de câble comprend un élément (1) d'âme intérieure transmettant la force, ainsi qu'un élément (2) de manchon en plastique synthétique souple extérieur, comprenant une partie (4) intérieure annulaire contenant un alésage (6) présentant une surface de paroi lisse, et dans lequel l'élément d'âme (1) est monté pour se déplacer dans le sens longitudinal. Une pluralité de parties (8) de nervures hélicoïdales solidaires, s'étend radialement à l'extérieur de la périphérie externe de la partie intérieure (4), lesdites parties (8) de nervures s'étendant longitudinalement dans un agencement hélicoïdal espacé autour de la partie intérieure (4). Dans un mode de réalisation, une couche (10) protectrice annulaire extérieure, en plastique synthétique, est agencée de manière concentrique autour de la partie intérieure (4), et s'étend radialement à l'intérieur afin de remplir les espaces situés entre les nervures hélicoïdales (8). Dans un second mode de réalisation, la couche (2') annulaire extérieure est tubulaire, définissant ainsi des passages antibruit (16) entre les nervures hélicoïdales (8').
PCT/US1990/002881 1990-01-05 1990-05-29 Conduit en plastique synthetique souple WO1991011012A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP90124918A EP0438745A1 (fr) 1990-01-05 1990-12-20 Gaine flexible résistant à la corrosion et procédé pour sa fabrication

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US46128190A 1990-01-05 1990-01-05
US461,281 1995-06-05

Publications (1)

Publication Number Publication Date
WO1991011012A1 true WO1991011012A1 (fr) 1991-07-25

Family

ID=23831935

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1990/002881 WO1991011012A1 (fr) 1990-01-05 1990-05-29 Conduit en plastique synthetique souple

Country Status (2)

Country Link
AU (1) AU6431790A (fr)
WO (1) WO1991011012A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996018479A1 (fr) * 1994-12-13 1996-06-20 Minnesota Mining And Manufacturing Company Brosse abrasive a languettes et procede et appareil de fabrication de ladite brosse
WO2003013826A3 (fr) * 2001-08-03 2003-05-22 Proteus Inc Procede de production et appareil destine a la realisation d'un tube a nervures helicoidales
US6955780B2 (en) 1998-08-12 2005-10-18 Proteus, Inc. Multi-wall cylindrical structure, method of making such structure, and apparatus for carrying out such method
USRE39251E1 (en) * 2000-08-16 2006-08-29 Bristol-Myers Squibb Co. Polymorphs of an epothilone analog
EP2136157A3 (fr) * 2008-06-16 2010-11-03 Demar Heiwerken B.V. Ensemble de tubes pour échangeur de chaleur géothermique
WO2014106072A1 (fr) * 2012-12-28 2014-07-03 Gyre Innovations Lp Structure tubulaire à parois multiples extrudée
RU2526923C2 (ru) * 2009-03-11 2014-08-27 Федерал-Моугал Дэва Гмбх Втулка скольжения и элемент скольжения
US9022210B2 (en) 2012-12-28 2015-05-05 Gyre Innovations Lp Conveyor system lifter assembly
US9358599B2 (en) 2013-05-28 2016-06-07 Gyre Innovations Lp Apparatus for producing a tubular structure

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3435634A (en) * 1967-03-06 1969-04-01 Newton L Chatham Wire cable housing
US3657942A (en) * 1970-06-09 1972-04-25 Matthew A Sullivan Control cable
US4099425A (en) * 1976-06-01 1978-07-11 Samuel Moore And Company Method of making push-pull cable conduit and product
US4193319A (en) * 1975-09-05 1980-03-18 Incom International Inc. Push-pull cable core with self-lubricating coating
US4300408A (en) * 1979-10-05 1981-11-17 Nippon Cable System Inc. Control cable
DE3021533A1 (de) * 1980-06-07 1981-12-17 Max Kammerer Gmbh, 6370 Oberursel Bowdenzug

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3435634A (en) * 1967-03-06 1969-04-01 Newton L Chatham Wire cable housing
US3657942A (en) * 1970-06-09 1972-04-25 Matthew A Sullivan Control cable
US4193319A (en) * 1975-09-05 1980-03-18 Incom International Inc. Push-pull cable core with self-lubricating coating
US4099425A (en) * 1976-06-01 1978-07-11 Samuel Moore And Company Method of making push-pull cable conduit and product
US4300408A (en) * 1979-10-05 1981-11-17 Nippon Cable System Inc. Control cable
DE3021533A1 (de) * 1980-06-07 1981-12-17 Max Kammerer Gmbh, 6370 Oberursel Bowdenzug

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5674121A (en) * 1994-12-13 1997-10-07 Minnesota Mining And Manufacturing Company Core having an outer surface for receiving adhesive
US5695559A (en) * 1994-12-13 1997-12-09 Minnesota Mining And Manufacturing Company Apparatus for coating adhesive onto a core
WO1996018479A1 (fr) * 1994-12-13 1996-06-20 Minnesota Mining And Manufacturing Company Brosse abrasive a languettes et procede et appareil de fabrication de ladite brosse
US7140859B2 (en) 1998-08-12 2006-11-28 Protens, Inc. Apparatus for making a multi-walled tubular structure
US6955780B2 (en) 1998-08-12 2005-10-18 Proteus, Inc. Multi-wall cylindrical structure, method of making such structure, and apparatus for carrying out such method
USRE39251E1 (en) * 2000-08-16 2006-08-29 Bristol-Myers Squibb Co. Polymorphs of an epothilone analog
WO2003013826A3 (fr) * 2001-08-03 2003-05-22 Proteus Inc Procede de production et appareil destine a la realisation d'un tube a nervures helicoidales
US7550102B2 (en) 2001-08-03 2009-06-23 Proteus, Inc. Method for producing a helically shaped, seamless multi-walled cylindrical article
EP2136157A3 (fr) * 2008-06-16 2010-11-03 Demar Heiwerken B.V. Ensemble de tubes pour échangeur de chaleur géothermique
RU2526923C2 (ru) * 2009-03-11 2014-08-27 Федерал-Моугал Дэва Гмбх Втулка скольжения и элемент скольжения
WO2014106072A1 (fr) * 2012-12-28 2014-07-03 Gyre Innovations Lp Structure tubulaire à parois multiples extrudée
US9022210B2 (en) 2012-12-28 2015-05-05 Gyre Innovations Lp Conveyor system lifter assembly
US9022207B2 (en) 2012-12-28 2015-05-05 Gyre Innovations Lp Conveyor system bridge
US9052039B2 (en) 2012-12-28 2015-06-09 Gyre Innovations Lp Extruded multiwall tubular structure
US9358599B2 (en) 2013-05-28 2016-06-07 Gyre Innovations Lp Apparatus for producing a tubular structure

Also Published As

Publication number Publication date
AU6431790A (en) 1991-08-05

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