WO2013021370A2 - Pieu et procédé de production de pieu et d'élément de fixation - Google Patents

Pieu et procédé de production de pieu et d'élément de fixation Download PDF

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Publication number
WO2013021370A2
WO2013021370A2 PCT/IE2012/000041 IE2012000041W WO2013021370A2 WO 2013021370 A2 WO2013021370 A2 WO 2013021370A2 IE 2012000041 W IE2012000041 W IE 2012000041W WO 2013021370 A2 WO2013021370 A2 WO 2013021370A2
Authority
WO
WIPO (PCT)
Prior art keywords
stake
tubular element
plastics material
hollow interior
interior region
Prior art date
Application number
PCT/IE2012/000041
Other languages
English (en)
Other versions
WO2013021370A3 (fr
Inventor
John Francis Concannon
Original Assignee
Rodicon Limited
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 Rodicon Limited filed Critical Rodicon Limited
Publication of WO2013021370A2 publication Critical patent/WO2013021370A2/fr
Publication of WO2013021370A3 publication Critical patent/WO2013021370A3/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H17/00—Fencing, e.g. fences, enclosures, corrals
    • E04H17/02—Wire fencing, e.g. made of wire mesh
    • E04H17/10—Wire fencing, e.g. made of wire mesh characterised by the way of connecting wire to posts; Droppers
    • E04H17/12—Wire fencing, e.g. made of wire mesh characterised by the way of connecting wire to posts; Droppers the wire being placed in slots, grooves, or the like
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
    • E01F9/60—Upright bodies, e.g. marker posts or bollards; Supports for road signs
    • E01F9/604—Upright bodies, e.g. marker posts or bollards; Supports for road signs specially adapted for particular signalling purposes, e.g. for indicating curves, road works or pedestrian crossings
    • E01F9/608—Upright bodies, e.g. marker posts or bollards; Supports for road signs specially adapted for particular signalling purposes, e.g. for indicating curves, road works or pedestrian crossings for guiding, warning or controlling traffic, e.g. delineator posts or milestones
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
    • E01F9/60—Upright bodies, e.g. marker posts or bollards; Supports for road signs
    • E01F9/658—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by means for fixing
    • E01F9/673—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by means for fixing for holding sign posts or the like
    • E01F9/685—Subsoil means, e.g. foundations

Definitions

  • a stake and a method for producing a stake and a securing element
  • the present invention relates to a stake, and in particular, though not limited to a stake of the type used for supporting a wire of an electric fence, a stake of the type used in fencing, or a stake of the type used for carrying a reflective element to identify a boundary between a road and a side margin of the road adjacent a side edge of the road and to a stake in the form of a bollard.
  • the invention also relates to a securing element for securing a wire to a stake, and the invention further relates to a method for producing a stake.
  • a stake comprising an elongated tubular element of plastics material forming an outer skin of the stake and defining a hollow interior region within the stake, the tubular element extending between a lower ground engaging end and an upper closed end.
  • an upper portion of the hollow interior region of the tubular element is filled with an expanded plastics material.
  • the upper portion of the tubular element which is filled with the expanded plastics material extends from the upper end of the tubular element a distance of at least 10% of the overall length of the tubular element.
  • the upper portion of the tubular element which is filled with the expanded plastics material extends from the upper end of the tubular element a distance of at least 15% of the overall length of the tubular element.
  • the upper portion of the tubular element which is filled with the expanded plastics material extends from the upper end of the tubular element a distance of approximately 20% of the overall length of the tubular element.
  • a lower portion of the hollow interior region of the tubular element is filled with an expanded plastics material.
  • the lower portion of the tubular element which is filled with the expanded plastics material extends from the lower ground engaging end of the tubular member a distance of at least 10%.
  • the lower portion of the tubular element which is filled with the expanded plastics material extends from the lower ground engaging end of the tubular member a distance of at least 15%.
  • the lower portion of the tubular element which is filled with the expanded plastics material extends from the lower ground engaging end of the tubular member a distance of approximately 20%.
  • the hollow interior region defined by the stake is filled with an expanded plastics material.
  • the expanded plastics material in the hollow interior region defined by the tubular element is interspersed with a non-expandable plastics material.
  • the non-expandable plastics material is waste plastics material.
  • the non-expandable plastics material is provided in at least one of particulate, flake and chip form.
  • the non-expandable plastics material in one or more of particle, flake and chip form is of size suitable for passing through a screen of mesh size in the range of 2mm to 20mm.
  • the non-expandable plastics material in one or more of particle, flake and chip form is of size suitable for passing through a screen of mesh size in the range of 10mm to 12mm.
  • the non-expandable plastics material which is dispersed in the expanded plastics material constitutes up to 60% by volume of the expanded plastics material.
  • the non-expandable plastics material which is dispersed in the expanded plastics material constitutes up to 50% by volume of the expanded plastics material.
  • the non-expandable plastics material which is interspersed in the expanded plastics material is a non-expandable plastics material having a melting point below the temperature at which the expanded plastics material expands.
  • the non-expandable plastics material comprises a polymer based material.
  • the non-expandable plastics material which is interspersed through the expandable plastics material is a non-expandable plastics material selected from any one or more of the following plastics materials:
  • LDPE low density polyethylene
  • LLDPE linear low density polyethylene
  • MDPE medium density polyethylene
  • HDPE high density polyethylene
  • PS polystyrene
  • PVC polyvinyl chloride
  • PET polyethylene terephthalate
  • the expanded plastics material is formed in the hollow interior region defined by the tubular element by expanding an expandable plastics material in the hollow interior region after formation of the elongated element.
  • the expanded plastics material comprises a polymer based foamable material.
  • the expanded plastics material comprises expanded polystyrene.
  • a lower end portion of the tubular element tapers towards the ground engaging end of the tubular element.
  • a lower tapering end portion of the tubular element tapers towards a point.
  • the lower tapering end portion of the tubular element tapers to a radiused point. In one embodiment of the invention the lower tapering end portion of the tubular element is formed integrally with the tubular element.
  • the lower tapering end portion is formed separately of the tubular element.
  • a spigot extending from the tapering lower end portion is engageable with the hollow interior region of the tubular element for securing the tapering lower end portion in the tubular element.
  • the lower tapering end portion closes the lower ground engaging end of the tubular element.
  • the lower ground engaging end of the tubular element is open-ended.
  • the lower ground engaging end terminates in an open mouth.
  • the open mouth of the lower ground engaging end of the stake is a downwardly facing open mouth.
  • the open mouth adjacent the lower ground engaging end of the tubular element is closed by the expanded plastics material.
  • an elongated reinforcing element is located in the hollow interior region defined by the tubular element and is embedded in the expanded plastics material located therein.
  • the reinforcing element extends substantially longitudinally in the hollow interior region of the tubular element.
  • the reinforcing element extends through the open mouth in the lower ground engaging end of the tubular element.
  • the reinforcing element is substantially centrally located in the hollow interior region defined by the tubular element.
  • the stake is adapted as a bollard.
  • the stake is adapted as a kerbside bollard for mounting on a pavement.
  • the stake is adapted for identifying a boundary between a road and a soft side margin of the road adjacent a side edge of the road, the tubular element being adapted for carrying at least one reflective element.
  • at least one reflective element accommodating recess is formed on one side of the tubular element for accommodating a corresponding one of the reflective elements.
  • at least one wire accommodating opening is formed in the elongated element for accommodating a wire of a fence therethrough.
  • the tubular element comprises at least one plate member formed therein, and a corresponding one of the wire accommodating opening extends through the plate member.
  • each plate member extends in a general longitudinal direction relative to the elongated member, and the wire accommodating opening extends transversely through the corresponding plate member relative to the elongated member.
  • at least one plate accommodating recess is formed in the tubular member, and a corresponding one of the plate members extends across the plate accommodating recess.
  • each plate accommodating recess extends substantially transversely relative to the elongated element.
  • at least two plate members are located at longitudinally spaced apart intervals along the tubular member.
  • an opening is provided in the tubular member extending through the tubular member and communicating with the hollow interior region thereof, the opening being adapted to engage a securing element for securing a wire of a fence to the tubular element.
  • the upper closed end of the tubular element is closed by an end cap.
  • the end cap is formed integrally with the tubular element.
  • the end cap closing the upper end of the tubular element comprises a plug element for engaging the hollow interior region of the tubular element for securing the end cap to the tubular element.
  • the tubular element comprises a polymer based material.
  • the tubular element comprises a material selected from one or more of the following plastics materials:
  • LDPE low density polyethylene
  • LLDPE linear low density polyethylene
  • MDPE medium density polyethylene
  • HDPE high density polyethylene
  • PS polystyrene
  • PVC polyvinyl chloride
  • PET polyethylene terephthalate
  • the tubular element is formed by one of rotational moulding, blow moulding, extrusion and injection moulding.
  • the lower tapering end portion of the tubular element is adapted for piercing the ground.
  • the invention provides a method for forming a stake, the method comprising forming an elongated tubular element of plastics material by rotationally moulding the plastics material to form the tubular element defining a hollow interior region and extending between a lower ground engaging end and an upper end.
  • an expandable plastics material is expanded in an upper portion of the hollow interior region of the tubular element to fill the upper portion thereof.
  • the upper portion of the tubular element which is filled with the expanded plastics material extends from the upper end of the tubular element a distance of at least 10% of the overall length of the tubular element.
  • an expandable plastics material is expanded in a lower portion of the hollow interior of the tubular element to fill the lower portion thereof.
  • the lower portion of the tubular element which is filled with the expanded plastics material extends from the lower ground engaging end of the tubular member a distance of at least 10%.
  • an expandable plastics material is expanded in the hollow interior region defined by the tubular element to fill the hollow interior region thereof.
  • a non-expandable plastics material is dispersed throughout the expandable plastics material during expanding of the expandable plastics material therein.
  • the invention provides a securing element for securing a wire to a stake formed by an elongated tubular element, the securing element comprising a first engagement means adapted for engaging an opening extending radially through the tubular element, and a second engagement means adapted for engaging and retaining the wire.
  • the first engagement means comprises a pair of resilient spaced apart legs for engaging the radial opening in the tubular element.
  • a first retaining means is formed on at least one of the legs for engaging an inner surface of the tubular element adjacent the radial opening thereof.
  • the first retaining means comprises a pair of external shoulders located on the respective legs, extending outwardly therefrom.
  • the legs extend from a head.
  • the legs define a gap therebetween.
  • the gap extends into the head to form the second
  • engagement means for engaging the wire therein.
  • a second retaining means extends into the gap adjacent the head thereof for retaining the wire in the gap within the head.
  • each second retaining means extends into the gap from respective opposite sides thereof.
  • each second retaining means extend from a corresponding one of the legs adjacent the head.
  • each second retaining means extend from the head adjacent the corresponding one of the legs.
  • the securing element comprises a plastics material, and preferably, the securing element comprises an injection moulded plastics material. In one embodiment of the invention the securing element comprises an electrically insulating material.
  • the invention also provides in combination an elongated tubular element having at least one radial opening extending radially into a hollow interior region defined by the tubular member, and a securing element according to the invention for engaging the radial opening and for securing a wire to the tubular element.
  • the tubular element comprises a stake according to the invention, and having at least one radial opening extending through the tubular element communicating with the hollow interior region for engaging the securing element.
  • each second retaining means of the securing element is adapted for retaining the wire in the second engaging means spaced apart from the tubular element when the first engagement means is secured in the tubular element.
  • Fig. 1 is a perspective view of a stake according to the invention
  • Fig. 2 is a front elevational view of the stake of Fig. 1
  • Fig. 3 is an enlarged perspective view of a detail of the stake of Fig. 1 ,
  • Fig. 4 is a cross-sectional side elevational view of the stake of Fig. 1
  • Fig. 5 is a perspective view of a stake according to another embodiment of the invention
  • Fig. 6 is a front elevational view of the stake of Fig. 5,
  • Fig. 7 is an enlarged perspective view of a detail of the stake of Fig. 5,
  • Fig. 8 is a cross-sectional side elevational view of the stake of Fig. 5,
  • Fig. 9 is a perspective view of a stake according to another embodiment of the invention.
  • Fig. 10 is a front elevational view of the stake of Fig. 9,
  • Fig. 1 is an enlarged perspective view of a detail of the stake of Fig. 9,
  • Fig. 12 is a cross-sectional front elevational view of the stake of Fig. 9,
  • Fig. 13 is a perspective view of a stake according to another embodiment of the invention.
  • Fig. 14 is a front elevational view of the stake of Fig. 13,
  • Fig. 15 is a perspective view of a detail of the stake of Fig. 13,
  • Fig. 16 is a cross-sectional front elevational view of the stake of Fig. 13,
  • Fig. 17 is a perspective view of a stake according to a further embodiment of the invention.
  • Fig. 18 is a side view of the stake of Fig. 17,
  • Fig. 9 is a cross-sectional side elevational view of the stake of Fig. 17, Fig. 20 is a perspective view of a securing element also according to the invention for use with the stake of Fig. 17,
  • Fig. 21 is another perspective view of the securing element of Fig. 20,
  • Fig. 22 is a top plan view of the securing element of Fig. 20,
  • Fig. 23 is a front elevational view of the securing element of Fig. 20,
  • Fig. 24 is a perspective view of a securing element according to another embodiment of the invention.
  • Fig. 25 is another perspective view of the securing element of Fig. 24,
  • Fig. 26 is a side elevational view of the securing element of Fig. 24,
  • Fig. 27 is a top plan view of the securing element of Fig. 24,
  • Fig. 28 is a front elevational view of the securing element of Fig. 24,
  • Fig. 29 is a perspective view of a stake according to another embodiment of the invention.
  • Fig. 30 is a front elevational view of the stake of Fig. 29, Fig. 31 is a side elevational view of the stake of Fig. 29, Fig. 32 is an enlarged perspective view of a detail of the stake of Fig. 29,
  • Fig. 33 is a partly exploded perspective view of a stake according to a further embodiment of the invention.
  • Fig. 34 is a partly exploded front elevational view of the stake of Fig. 33
  • Fig. 35 is a partly exploded perspective view of the stake of Fig. 33
  • Fig. 36 is a partly exploded front elevational view of the stake of Fig. 33
  • Fig. 37 is a perspective view of a stake according to a still further
  • Fig. 38 is a front elevational view of the stake of Fig. 37
  • Fig. 39 is a cross-sectional front elevational view of a stake according to another embodiment of the invention.
  • Fig. 40 is a cross-sectional front elevational view of a stake according to a further embodiment of the invention.
  • the stake 1 is adapted for use in identifying a boundary between a road and a side margin of the road adjacent a side edge of the road.
  • the stake 1 comprises an elongated hollow tubular member 3, which in this embodiment of the invention is formed by rotational moulding of a plastics material, namely, a polymer based material, which may be selected from any one or more of LDPE, LLDPE, MDPE, HDPE, PP, PS, PVC and PET.
  • the polymer based material of the tubular member 3 may be fibre reinforced during the forming process with any suitable reinforcing fibres.
  • the tubular member 3 defines a hollow interior region 4, and extends between a lower ground engaging end 2 and an upper end 6.
  • a flange 8 extends around and inwardly from the tubular element 3 adjacent the upper end 6 to form an end cap 9 which closes the hollow interior region 4 at the upper end 6.
  • a lower end portion 5 of the tubular element 3 tapers downwardly to the ground engaging end 2 to form a ground engaging pointed tip 10. The lower tapering end portion 5 closes the hollow interior region 4 at the ground engaging end 2 thereof.
  • the tubular element 3 is of square transverse cross- section formed by four longitudinally extending side walls 11.
  • a front reflector accommodating recess 12 is formed in a front one of the side walls 11 of the tubular element 3 towards the upper end 6 thereof for accommodating a reflector (not shown).
  • the reflector is of the type which reflects white light from an oncoming light beam from a car, and will be well known to those skilled in the art.
  • a rear reflector accommodating recess 14 which is similar to the front recess 12 is formed in a rear one of the side walls 11 of the tubular element 3 for accommodating a reflector which reflects red light from an oncoming light beam of a car.
  • the stake 1 is rotationally moulded from the plastics material in one piece.
  • the stake 1 is secured in a soft margin of a road adjacent a side edge of the road by engaging the ground engaging pointed tip 10 in the ground and urging the stake 1 securely into the ground.
  • the stake 1 is secured in the ground with the front recess 12 facing oncoming traffic on the side edge of the road on which the stake 1 is located, and with the rear recess 14 facing in the opposite direction.
  • a stake according to another embodiment of the invention indicated generally by the reference numeral 20:
  • the stake 20 is substantially similar to the stake 1 of Figs. 1 to 4, and similar components are identified by the same reference numerals.
  • the stake 20 is also suitable for use in identifying the boundary between a road and a side margin of the road adjacent a side edge of the road.
  • the main difference between the stake 20 and the stake 1 is that in this embodiment of the invention the stake 20 is of circular transverse cross- section having a circular wall 21 extending around and defining the hollow interior region 4.
  • the ground engaging pointed tip 10 adjacent the ground engaging end 2 of the tubular element 3 is slightly radiused, and a small opening 22 extends through the end cap 9.
  • the stake 1 is similar to the stake 20, and its use is likewise similar.
  • Figs. 9 to 12 there is illustrated a stake according to another embodiment of the invention, indicated generally by the reference numeral 30.
  • the stake 30 is substantially similar to the stake 20, and similar components are identified by the same reference numerals.
  • an upper portion 33 of the hollow interior region 4 adjacent the upper end 6 of the tubular element 3 and a lower portion 36 of the hollow interior region 4 adjacent the ground engaging end 2 are filled with expanded plastics material 37 through which non-expandable plastics material 38 in particulate and flake form is dispersed.
  • the expanded plastics material 37 is expanded in the upper and lower portions 33 and 36 of the hollow interior region 4 of the tubular element 3 with the non- expandable particulate and flake material 38 after formation of the tubular element 3.
  • the non-expandable particulate and flake plastics material 38 is located in the hollow interior region 4 adjacent the upper and lower portions 33 and 36 of the tubular element 3, and the expandable plastics material 37 is then injected by an elongated wand (not shown) through an opening 39 in the end cap 9 into the upper and lower portions 33 and 36 of the hollow interior region 4 and expanded therein.
  • the non-expandable particulate and flake plastics material 38 is dispersed throughout the expanding plastics material 37 in the upper and lower portions 33 and 36 of the hollow interior region.
  • the expanded plastics material 37 in this embodiment of the invention is expandable polystyrene.
  • the non-expandable plastics material 38 is waste plastics material and may be any of a variety of plastics material with a melt temperature less than the temperature at which the expandable plastics material expands.
  • the non- expandable waste plastics material 38 may comprise any one or more of LDPE, LLDPE, MDPE, HDPE, PP, PS, PVC and PET.
  • the non-expandable waste plastics material 38 in particulate form of size suitable for passing through a screen of mesh material of mesh size 10mm to 12mm.
  • the non-expandable plastics material 38 in flake form is of size suitable for passing through a screen of mesh size in the range of 12mm to 20mm. Additionally, in this embodiment of the invention the non- expandable waste plastics material 38 constitutes approximately 60% by volume of the expanded plastics material 37.
  • the lengths I-, and l 2 of the upper and lower portions 33 and 36 which are filled with the expandable plastics material 57 with the non-expandable particulate and flake plastics material 38 dispersed therethrough are each of approximately 20% of the overall length L of the tubular element 3.
  • the tubular element 3 of the stake 30 is formed of a polymer based material by rotational moulding, and on completion of the formation of the tubular element 3, the non-expandable waste plastics material 38 in flake and particulate form is placed in the lower portion 36 of the tubular element 3 through the opening 39 in the end cap 9.
  • the elongated wand (not shown) is inserted into the hollow interior region 4 through the opening 39 towards the lower portion 36 of the tubular element 3, and the expandable plastics material 37 is injected through the wand (not shown) into the lower portion 36 of the tubular element 3.
  • the expandable plastics material 37 commences to expand to fill the lower portion 36 of the hollow interior region 4.
  • the non- expandable plastics material 38 is dispersed throughout the expanded plastics material 37 in the lower portion 36 of the hollow interior region 4.
  • more non-expandable plastics material 38 in flake and particulate form is placed in the upper portion 33 of the hollow interior region 4 of the tubular element 3 through the opening 39.
  • the wand is again inserted through the opening 39 into the upper portion 33 of the hollow interior region 4 of the tubular element 3, and the expandable plastics material 37 is injected into the upper portion 33 of the hollow interior region 4.
  • the non-expandable particulate and flake plastics material 38 is dispersed throughout the expanded plastics material 37 in the upper portion 33 of the hollow interior region 4 of the tubular element 3.
  • a stake according to another embodiment of the invention indicated generally by the reference numeral 40.
  • the stake 40 is substantially similar to the stake 30 and similar components are identified by the same reference numerals.
  • the main difference between the stake 40 and the stake 30 is that the entire hollow interior region 4 of the tubular element 3 is filled with the expanded plastics material 37 with the non-expandable plastics material 38 in particulate and flake form dispersed therethrough.
  • the expandable plastics material 37 and the non-expandable plastics material 38 in particulate and flake form are similar to the expandable and non-expandable materials 37 and 38, respectively, described with reference to the stake 30 of Figs. 9 to 12. Otherwise, the stake 40 is similar to the stake 30, as is its use.
  • the stakes 1, 20, 30 and 40 are suitable for use as road marking stakes for marking the boundary between the road and a side margin of the road adjacent a side edge of the road.
  • a stake according to a further embodiment of the invention indicated generally by the reference numeral 50.
  • the stake 50 is particularly suitable for use for supporting a wire 51 of an electric fence.
  • the stake 50 is substantially similar to the stake 20, and similar components are identified by the same reference numerals.
  • the front and rear recesses towards the upper portion of the stake 50 have been omitted, and instead an opening 52 extends radially through the tubular element 3 and communicates with the hollow interior region 4, which in this embodiment of the invention is provided without any expanded plastics material or non-expandable plastics material.
  • a securing element also according to the invention and indicated generally by the reference numeral 53 of electrically insulating plastics material is engageable in the opening 52 for securing the wire 51 of the electric fence to the stake 50.
  • the securing element 53 is formed in one piece by injection moulding.
  • the securing element 53 comprises a head 55, and a first engagement means comprising a pair of spaced apart resilient legs 56 extending from the head 55 for engaging the tubular element 3 in the opening 52.
  • the legs 56 are of substantially semicircular transverse cross-section and taper inwardly towards a distal end 57.
  • the external shoulders 59 of the legs 56 define with the head 55 an annular groove 64 for retaining the portion of the wall 11 of the tubular element 3 adjacent the opening 52 entrapped between the head 55 and the external shoulders 59 when the securing element 53 is located in the opening 52.
  • the legs 56 define a gap 60 therebetween in order to accommodate inward flexing of the legs 56 as the securing element 53 is being engaged in the opening 52 of the tubular element 3.
  • a second engagement means for engaging the wire 51 in the securing element 53 is formed by an elongated wire accommodating bore 60 which extends transversely through the head 55, and which communicates with the gap 58 formed between the legs 56 through an extension 61 of the gap 58 which extends from the gap 58 into the head 55 for accommodating the wire 51 into the wire accommodating bore 60.
  • a second retaining means comprising a pair of inwardly extending internal shoulders 62 defined by the extension 61 of the gap 58 formed between the legs 56 adjacent the head 55 retain the wire 51 within the wire accommodating bore 60 within the head 55, so that when the securing element 53 is engaged in the opening 52, the wire 51 is retained by the inwardly extending internal shoulders 62 within the head 55 spaced apart from the tubular element 3.
  • the stake 50 is of a plastics material which is electrically non-conductive, the need to retain the wire 51 in the wire
  • the securing element 53 according to the invention is also suitable for use with a hollow metal stake with a radially extending opening similar to the radially extending opening 52 of the stake 50, which would extend into a hollow interior region of the metal stake.
  • the metal stake would be of electrically conductive material, it would be necessary to space the wire 51 from the tubular element of such a metal stake.
  • the stake 50 is also formed of a polymer based plastics material by rotational moulding.
  • a securing element according to another embodiment of the invention for securing a wire of an electric fence to the stake 50 described with reference to Figs. 17 to 23.
  • the securing element 70 is substantially similar to the securing element 53 described with reference to Figs. 17 to 23, and similar components are identified by the same reference numerals.
  • the only difference between the securing element 70 and the securing element 53 is that as well as the head 55 of the securing element 70 comprising the wire accommodating bore 60 for
  • the head 55 of the securing element 70 also comprises a wire accommodating element 71 which may be used as an alternative to the wire accommodating bore 53 for securing a wire of an electric fence to the stake 50.
  • the wire accommodating element 71 comprises a bayonet type element 73 which is formed by lugs 74 which are attached to the head 55 by mounting elements 75, and which define with the head 55 and the mounting elements 75 a transversely extending passageway 76 for accommodating the wire of the electric fence therein.
  • the lugs 74 define a gap 77 therebetween which accommodates the wire into the wire accommodating passageway 76.
  • the lugs 74 define the gap 77 which extends at an angle of approximately 45° to the wire accommodating passageway 76, so that by angling the wire at 45° relative to the normal line of the wire, the wire can be entered through the gap 77 into the passageway 76 and returned to its normal line. The lugs 74 then retain the wire in the passageway 76.
  • the securing element 70 and its use in conjunction with the stake 50, or indeed, any other stake of plastics, metal or any other suitable material, is similar to that described with reference to the securing element 53 of the stake 50.
  • the stake 80 is substantially similar to the stake 20, described with reference to Figs. 5 to 8, and similar components are identified by the same reference numerals.
  • the stake 80 is particularly suitable as a fence post for supporting wires (not shown) of a fence (also not shown).
  • the stake 80 comprises an elongated tubular member 81 of circular transverse cross-section extending from an upper end 6 and terminating at a lower ground engaging end 2.
  • An end cap 9 closes the upper end 6 of the tubular member 81 , and the tubular member 81 terminates in a lower tapering end portion 5 adjacent the lower ground engaging end 2.
  • the tubular member 81 , the lower tapering end portion 5 and the end cap 9 are integrally formed in one piece of plastics material by rotational moulding.
  • a plurality of wire accommodating means for accommodating respective wires (not shown) of a fence (also not shown) in this embodiment of the invention for accommodating four wires of a fence comprises four plate members 84.
  • the plate members 84 are located in corresponding transversely extending semicircular plate accommodating recesses 85 formed into the tubular member 81 by deforming the tubular member 81.
  • Each plate member 84 extends in a generally longitudinal direction relative to the tubular member 81 across the corresponding recess 85.
  • a wire accommodating opening 87 extending through each plate member 84 accommodates a corresponding wire of the fence extending transversely of the tubular member 81.
  • the opening 87 in each plate member 84 is of rectangular cross-section.
  • the recesses 85 and the plate members 84, as well as the openings 87 extending through the plate members 84 are formed in the stake 80 during the rotational moulding process by which the stake 80 is formed.
  • the hollow interior region (not shown) of the stake 80 may or may not be filled or partly filled with an expanded plastics material with or without non-expandable plastics material in particulate and/or flake form dispersed throughout the expandable plastics material as described with reference to the stake 30 of Figs. 9 to 12 and the stake 40 described with reference to Figs. 13 to 16.
  • the stake 80 is similar to the stake 20, and its use is likewise similar.
  • wires (not shown) of a fence are threaded through the openings 87 from one stake 80 to the next.
  • the stake 90 comprises an elongated element, in this embodiment of the invention an elongated tubular member 91 extending between an upper end 93 and a lower ground engaging end 94.
  • the tubular member 91 in this embodiment of the invention is of plastics material and is extruded and defines an elongated bore 95 extending longitudinally therethrough.
  • a tip element 96 is secured to the tubular member 91 adjacent the lower ground engaging end 94.
  • the tip element 96 tapers towards a distal end 97 which is adapted to pierce the ground.
  • the distal end 97 although forming a point, is slightly radiused.
  • a spigot 98 extending from the tip element 96 is adapted for securely engaging the bore 95 of the tubular member 91 with an interference fit.
  • the tip element 96 is hollow and is of plastics material and is formed by injection moulding.
  • An end cap 99 having a plug element 100 and a flange 101 extending radially outwardly from the plug element 100 is engageable in the bore 95 of the tubular member 91 with the plug element 100 engaging the bore 95 with an interference fit.
  • the end cap 99 is also of plastics material and is formed by injection moulding.
  • the bore 95 of the tubular member 91 may be completely or partly filled with an expanded plastics material with or without non-expandable plastics material in particulate and/or flake form dispersed therethrough in similar manner as in the case of the stakes 30 and 40.
  • the hollow interior of the tip element 96 may also be filled or partly filled with the expandable plastics material with or without non-expandable plastics material in particulate and/or flake form dispersed therethrough.
  • the stake 90 is similar to the stakes 1 , 20, 30 and 40, and its use is likewise similar.
  • a stake according to a still further embodiment of the invention indicated generally by the reference numeral 110.
  • the stake 110 is substantially similar to the stake 1 , and similar components are identified by the same reference numerals.
  • the main difference between the stake 110 and the stake 1 is that a vent opening 111 is formed in the tapering ground engaging portion 5 for venting the hollow interior region of the tubular element 3 during forming of the stake 110.
  • the stake 110 is of a plastics material and is formed by rotational moulding. Gases which build up in the hollow interior region of the tubular member 3 of the stake 110 during the rotational moulding forming process are exhausted through the vent opening 111.
  • the stake 110 and its use is similar to that of the stakes 1 , 20, 30 and 40, and the hollow interior region 4 of the stake 110 may be filled or partly filled with an expandable plastics material with or without non-expandable plastics material dispersed through the expandable material as described with reference to the stakes 30 and 40.
  • a stake according to another embodiment of the invention, which in this case is a bollard, indicated generally by the reference numeral 120.
  • the bollard 120 is of the type which is commonly referred to as a kerbside bollard for locating on a pavement adjacent a kerb thereof to prevent motor vehicles driving onto or parking on the pavement.
  • the bollard 120 is also suitable for locating on a pavement or an area designated pedestrian-only to act as a barrier to motor vehicles.
  • the bollard 120 comprises an elongated tubular element 121 of circular transverse cross-section which defines an elongated hollow interior region 123.
  • the tubular element 121 terminates at an upper end 124 in a hollow substantially spherical element 125 which defines a substantially spherical hollow interior region 126 which communicates with the hollow interior region 123.
  • a lower end 128 of the tubular element 121 terminates in an end portion 129 of circular transverse cross-section and of diameter greater than the diameter of the tubular element 121.
  • a ground engaging end cap 130 extends transversely across the lower end 128 and defines a downwardly facing open mouth 132 for accommodating a reinforcing element comprising a reinforcing tube 134 into the hollow interior region 123.
  • the reinforcing tube 134 is of tubular steel of circular transverse cross-section.
  • a lower ground engaging portion 135 of the reinforcing tube 134 extends downwardly from the hollow interior region 123 through the open mouth 132 in the end cap 130 for engaging the ground under the pavement.
  • the reinforcing tube 134 extends longitudinally through the hollow interior region 123 of the tubular element 121 and is embedded in an expanded plastics material 137 which is expanded in the hollow interior region 123 of the tubular element 121 and in the spherical hollow interior region 126 of the spherical element 125.
  • the expanded plastics material 137 locates and retains the reinforcing tube 134 extending centrally through the tubular element 121.
  • the tubular element 121 , the spherical element 125 and the end portion 129, as well as the ground engaging end cap 130 are integrally formed of plastics material in one piece by a rotational moulding process.
  • the bollard is rotationally moulded from a polymer based material which may be selected from any one or more of LDPE, LLDPE, MDPE, HDPE, PP, PS, PVC and PET.
  • the reinforcing tube 134 is inserted into the hollow interior region 123 of the tubular element 121 through the open mouth 132 in the ground engaging end cap 130 until the reinforcing tube 134 is located adjacent the lower end of the spherical element 125.
  • the tubular element 121 and the reinforcing tube 134 are engaged in a suitable jig for retaining the reinforcing tube 134 centrally located in the tubular element 121 with the lower ground engaging portion 135 of the reinforcing tube 134 extending through the open mouth 132.
  • An elongated wand is then inserted through the reinforcing tube 134 into the spherical hollow interior region 126 for injecting the expandable plastics material into the spherical hollow interior region 126, and in turn into the hollow interior region 123 in order to expand the expandable plastics material 137 to fill the hollow interior region 123 and the spherical hollow interior region 126 of the bollard 120 for in turn locating and retaining the reinforcing tube 134 extending longitudinally centrally through the hollow interior region 123.
  • the bollard 120 On completion of the expanding of the expandable plastics material 137 in the bollard 120, the bollard 120 is ready for use.
  • the bollard 120 is mounted on a pavement with the lower ground engaging portion 135 of the reinforcing tube 134 extending into the pavement for anchoring the bollard 120 therein and with the ground engaging end cap 130 engaging and sitting on the surface of the pavement.
  • Fig. 40 there is illustrated a stake according to another
  • bollard 140 is substantially similar to the bollard 120, and similar components are identified by the same reference numerals.
  • the only difference between the bollard 140 and the bollard 120 is that a hollow interior region 141 defined by the portion of the reinforcing tube 134 which is located within the tubular element 121 is also filled with the expanded plastics material 137.
  • the bollard 140 and its use is similar to that of the bollard 120 described with reference to Fig. 39.
  • the advantages of the invention are many. It has been found that the stake when provided without any expanded plastics material located in the hollow interior region is of sufficient strength to allow hammering of the stake into the ground.
  • the stake is of a plastics material, it is relatively resilient, and when engaged in the ground, if bent over, rapidly returns to its erect upstanding state.
  • the stakes are used to indicate the side boundary of a roadway, it has been found that when the stakes are hit by a car, they merely bend over and when the car has passed over the stakes or has been removed, the stakes return to their normal erect state.
  • a particularly important advantage of the stakes according to the invention is that it has been found that once secured in the ground, it is exceedingly difficult to remove the stakes from the ground.
  • the soil in general tends to press inwardly onto the outer surface of the stakes, and thus acts to retain the stakes in the ground against any upward pulling action.
  • a particularly important advantage is obtained when the upper portion of the hollow interior region of the tubular element is filled with the expanded plastics material. It has been found that the provision of the expanded plastics material in the upper portion of the tubular element strengthens the upper portion of the tubular element, thereby providing the tubular element to be even more resistant to hammer blows. The provision of the expanded plastics material in the lower portion of the hollow interior region adjacent the lower portion of the tubular element strengthens the lower tapering ground engaging end portion of the tubular element, thus making it particularly resistant to damage during entering and hammering of the stake into the ground.
  • a further advantage is achieved by providing the expanded plastics material within the entire length of the hollow interior region of the tubular element, since the provision of the expanded plastics material extending the length of the tubular element further enhances the strength of the tubular element.
  • the provision of the expanded plastics material increases the strength of the stake, while at the same time avoiding an excessively heavy stake. It has been found that the inclusion of non-expandable plastics material, particularly in flake and/or particulate form dispersed throughout the expanded plastics material further enhances the strength of the stakes without unduly increasing the weight of the stakes.
  • the stakes have been described as being formed by rotational moulding, it is envisaged that the stakes may be formed by any suitable moulding process, for example, blow moulding, extrusion, injection moulding, or any other suitable process. While the stakes have been described as being of a particular type of plastics material, the stakes may be of any other suitable plastics material. Needless to say, the expandable material may be of any suitable expandable plastics material, and any suitable non-expandable waste or non-waste material may be used.
  • the stakes have been described for identifying the side boundary of a roadway and for supporting wires of a fence and a wire of an electric fence, the stakes may be used for any other purpose.
  • the stakes will be of length in the range of four feet to eight feet. Needless to say, the stakes may be of greater or lesser length.
  • the maximum transverse cross-sectional dimension of the stakes will be in the range of 50mm to 150mm, and more commonly will be of diameter of 70mm to 100mm or of square cross-section of size in the range of 70mm by 70mm to 100mm by 100mm.
  • the expanded plastics material has been described as comprising non-expandable plastics material in particulate and flake form dispersed throughout the expanded plastics material
  • the non-expandable plastics material may be dispensed with, and only expanded plastics material would be provided in the hollow interior region of the tubular element.
  • the expanded plastics material in the bollards of Figs. 39 and 40 may also include non-expandable plastics material in particulate and flake form dispersed throughout the expanded plastics material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Fencing (AREA)
  • Road Signs Or Road Markings (AREA)

Abstract

La présente invention concerne un pieu (1) comprenant un élément tubulaire (3) qui définit une région intérieure creuse (4) qui se termine en une extrémité supérieure fermée (6) et une partie effilée inférieure qui entre en prise avec le sol (5) et qui définit un embout pointu qui entre en prise avec le sol (10). Des évidements avant et arrière (12, 14) sont formés dans des parois latérales opposées (11) du pieu (1) pour loger des éléments réfléchissants. Le pieu (1) est adapté à être utilisé dans l'identification d'une limite entre une route et une marge latérale adjacente au bord latéral de la route. Une borne (120) pour un trottoir comprend un élément tubulaire (121) qui définit une région intérieure creuse (123) et qui comporte un tube de renforcement (134) encastré dans un matériau plastique expansé (137) positionné de façon centrale dans l'élément tubulaire (121). Une partie inférieure qui entre en prise avec le sol (135) du tube de renforcement (134) s'étend à partir de la région intérieure creuse (123) pour l'encastrement dans le sol sous le trottoir.
PCT/IE2012/000041 2011-08-10 2012-08-10 Pieu et procédé de production de pieu et d'élément de fixation WO2013021370A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IES20110352 2011-08-10
IES2011/0352 2011-08-10

Publications (2)

Publication Number Publication Date
WO2013021370A2 true WO2013021370A2 (fr) 2013-02-14
WO2013021370A3 WO2013021370A3 (fr) 2013-04-11

Family

ID=47669029

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IE2012/000041 WO2013021370A2 (fr) 2011-08-10 2012-08-10 Pieu et procédé de production de pieu et d'élément de fixation

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Country Link
WO (1) WO2013021370A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3018156A1 (fr) * 2014-03-06 2015-09-11 Julien Sa Piece de fixation de tuteur sur un fil

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1658662A1 (de) * 1967-08-17 1970-11-05 Guenter Gubela Leitpfosten aus thermoplastischem Kunststoff,der insbesondere als geblasener Koerper ausgebildet ist
AT308372B (de) * 1969-01-20 1973-07-10 Hutter & Schrantz Ag Haltedübel aus Kunststoff für die Befestigung von Einzeldrähten oder Drähten von Geflechten an einem Profil oder einer Platte, insbesondere bei Zäunen
US3957250A (en) * 1975-04-14 1976-05-18 Murphy Stanley E Plastic fence post
AT371182B (de) * 1979-10-10 1983-06-10 Tekum Tech Kunststoff Metall Strassenleitpfahl
AU3672384A (en) * 1983-11-24 1985-06-13 Suh, K.H. Boundary support for fence
FR2783849B1 (fr) * 1998-09-25 2000-11-24 Urbaco Balise de voirie legere
LU90574B1 (en) * 2000-05-04 2001-11-05 Trefil Arbed Bissen S A System for fixing fencing material to a fence post

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3018156A1 (fr) * 2014-03-06 2015-09-11 Julien Sa Piece de fixation de tuteur sur un fil

Also Published As

Publication number Publication date
WO2013021370A3 (fr) 2013-04-11

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