WO2008132418A1 - Fixation d'échelle et accessoires - Google Patents

Fixation d'échelle et accessoires Download PDF

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Publication number
WO2008132418A1
WO2008132418A1 PCT/GB2007/001590 GB2007001590W WO2008132418A1 WO 2008132418 A1 WO2008132418 A1 WO 2008132418A1 GB 2007001590 W GB2007001590 W GB 2007001590W WO 2008132418 A1 WO2008132418 A1 WO 2008132418A1
Authority
WO
WIPO (PCT)
Prior art keywords
ladder
attachment
sock
bar
brace
Prior art date
Application number
PCT/GB2007/001590
Other languages
English (en)
Inventor
Peter Saag
John Leahy
Original Assignee
Peter Saag
John Leahy
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 Peter Saag, John Leahy filed Critical Peter Saag
Priority to PCT/GB2007/001590 priority Critical patent/WO2008132418A1/fr
Publication of WO2008132418A1 publication Critical patent/WO2008132418A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/48—Ladder heads; Supports for heads of ladders for resting against objects
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/14—Holders for pails or other equipment on or for ladders
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/48—Ladder heads; Supports for heads of ladders for resting against objects
    • E06C7/482—Supports specially adapted for resting the ladder against or in a corner
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/48—Ladder heads; Supports for heads of ladders for resting against objects
    • E06C7/484—Supports specially adapted for use with a wall opening, e.g. windows

Definitions

  • the present invention relates generally to a ladder attachment and more specifically to a ladder attachment to which accessories may be connected, and to those accessories.
  • the top ends of the ladder can scuff or otherwise damage a wall against which the ladder is leaning.
  • the bottom ends of a ladder can scuff or otherwise damage a floor on which the ladder is standing.
  • Positioning a ladder against a corner of a building can be particularly problematic, particularly when there is a drainpipe or similar obstruction located close to that corner.
  • the invention seeks to provide a solution to the aforesaid problems.
  • a ladder sock for location on or towards an end of a ladder stile, the sock having a first, open end through which an end of a ladder stile is received in use, and a second end for housing said end of said ladder stile, wherein the sock is adapted for connection to one or more accessories.
  • the accessories may be connected directly to the sock or indirectly via other accessories such as a bar, for example, which is described in more detail below.
  • the second end of the ladder sock may include a primary bore adapted to receive a bar for engaging with ladder accessories.
  • the primary bore is preferably substantially rectangular in cross-section and complimentary to the cross section of the bar, thereby substantially preventing rotation of the bar, and hence any accessories connected to the bar, relative to the ladder.
  • the primary bore is preferably substantially square in cross- section.
  • the second end of the sock preferably includes one or more secondary bores adapted to receive a connecting shaft associated with the one or more accessories.
  • the or each secondary bore may be provided with engagement means for preventing rotation of the shaft within the bore.
  • Preferably the or each secondary bore is provided with one or more elongate grooves for engaging with one or more splines on said connecting shaft.
  • the second end of the sock may define a socket in which the end of the stile is housed in use.
  • the sock may comprise an internal surface with which the end of the ladder stile abuts in use. This prevents the attachment from slipping with respect to the stile.
  • the sock is closed at one end, and the internal surface is the end surface of the sock.
  • the second end of the sock forms a protective cap for shielding the end of a ladder stile from an adjacent supporting surface.
  • the second end is sealed.
  • the sock may be open at both ends, in which case the internal surface with which the stile abuts may be provided by an inwardly protruding ledge or stop within the sock.
  • the second end comprises a material for inhibiting movement between the ladder and the surface.
  • the material is preferably resilient to provide a cushion between the ladder stile and the surface.
  • the material may form a friction grip with the surface.
  • the second end of the sock may include a widened section to provide an increased contact area with a supporting surface as compared to the contact area without the sock.
  • the widened section may comprise a generally curved face to abut said surface.
  • the first end of the sock may comprise an elongate sleeve portion for surrounding a part of the stile.
  • the elongate sleeve portion is preferably adjustable to secure firmly around stiles of various dimensions.
  • the elongate sleeve portion may include an elongate slot extending along at least part of the length of the elongate sleeve portion.
  • the sock may further comprise fastening means for securing the sleeve around the stile.
  • the fastening means may comprise one or more adjustable straps.
  • the sock may be provided with a strap for securing the sock to a ladder rung.
  • a ladder attachment system comprising: a pair of ladder socks, each sock having a first, open end to receive an end of a respective ladder stile and a second end for housing said end of said ladder stile, the second end of each ladder sock including a bore extending therethrough; and an elongate bar having end portions which in use extend through the bore in each of the pair of ladder socks for engagement with ladder accessories.
  • the socks are preferably substantially the same as the sock described above in accordance with the first aspect of the invention.
  • the bar serves to increase the structural rigidity of the ladder attachment and provides means for connection to various accessories.
  • the bar or at least the parts of the bar received in the bores, preferably has a cross- section complimentary to the cross-sections of the bores whereby rotation of the bar within the bores is substantially prevented.
  • the bar is rectangular in cross section and most preferably the bar is substantially square in cross-section.
  • the end portions of the bar preferably comprise connecting shafts for engagement with connecting pipes of the ladder accessories.
  • the connecting shafts may comprise engagement means for engaging with corresponding engagement means associated with the bores, thereby preventing rotation of the bar within the bores and allowing the angle of the bar to be adjusted and locked in position.
  • the connecting shafts have one or more splines for engagement with one or more corresponding grooves in connecting pipes associated with said accessories.
  • the bar may have a V-shaped central section, between the end portions.
  • the ladder attachment system may further comprise a strap which, in use, is fastened around the V- shaped section of the bar and a ladder rung, thereby securing the ladder attachment system firmly to the end of the ladder.
  • the ladder attachment system may include a pair of wheels rotatably mounted at respective ends of the bar.
  • a bar adapted for use in the ladder attachment system described above, the bar being elongate and having a V- shaped central section, the ends of the bar comprising splined sections for engaging with ladder accessories.
  • the bar preferably has a rectangular cross-section between the splined sections.
  • a window brace attachment suitable for connecting to the ladder attachment system described above, thereby to space the ladder away from a window whilst supporting the ladder on either side of said window
  • the window brace attachment comprising: an elongate brace bar oriented substantially parallel to the ladder rungs in use, and a pair of brace arms extending from the brace bar thereby to space the ladder apart from the window in use, wherein the brace arms include connecting means for connecting the window brace attachment to the ladder attachment system.
  • the connecting means comprises one or more connecting pipes into which the end portions of the bar are received in use.
  • the or each connecting pipe preferably has a splined bore for engaging with splined shafts at the end portions of the bar.
  • a tool tray may be provided for location in a region defined by the pair of brace arms and the brace bar.
  • the tool tray may be releasably fastened to the brace arms.
  • the tool tray includes hook portions which enable the tool tray to be clipped onto the brace arms.
  • a stand-off attachment for connecting to the ladder attachment system described above, thereby to space the ladder apart from a supporting surface
  • the stand-off attachment comprising: a pair of L-shaped bars, each L-shaped bar having a first elongate section and a second elongate section which are substantially orthogonal to one another, wherein each first section includes connecting means for connecting said L-shaped bar to the ladder attachment system such that in use the first sections of the L-shaped bars are substantially perpendicular to the ladder rungs, and the second sections of the L-shaped bars are substantially parallel to the ladder rungs and engage said supporting surface.
  • the connecting means may comprise one or more connecting pipes into which the end portions of the bar are received in use.
  • the or each connecting pipe may have a splined bore for engaging with splined shafts at the end portions of the bar.
  • the L-shaped bars may be connectable at either end of the bar and can be arranged such that the second sections extend towards or away from one another.
  • the stand-off attachment may further include a locking ring for connecting the second sections together when they are arranged such that they extend towards one another.
  • a container for tools and/or other accessories comprising connecting means for connecting said container to the window brace attachment and/or the stand-off attachment described above.
  • the container may be a plastics moulding.
  • the container comprises integral hooks for clipping onto the arms of the window brace attachment and/or the stand-off attachment.
  • a pad attachment suitable for attaching to the end of a ladder, thereby to increase the contact area between the ladder and an adjacent supporting surface
  • the pad attachment comprising a pad and connecting means for connecting said pad to a sock as described above.
  • the connecting means may include an elongate shaft suitable for insertion into a bore provided in said sock.
  • the elongate shaft may comprise splines for engagement with corresponding grooves in said bore, thereby to prevent rotation of said shaft in said bore.
  • the pad may be manufactured from a soft material making it suitable for use on soft or delicate surfaces, or from a hard material making it suitable for use on hard surfaces.
  • the pad may comprise a plurality of protrusions on its surface which provide extra grip.
  • a corner brace for use with a ladder when positioned at the apex of two adjoined surfaces of a building, structure or such like, the corner brace comprising a pair of substantially flat plate portions to permit insertion between a drainpipe and one of the adjoined surfaces, each plate portion having a first end and a second end; the plate portions meeting at their respective first ends and diverging from one another towards their respective second ends, the plate portions thereby being arranged in a V-shaped configuration with their respective front surfaces facing one another; wherein in use the front surface of one of the pair of plate portions rests against one of the adjoined surfaces, and the front surface of the other of the pair of plate portions rests against the other one of the adjoined surfaces.
  • the corner brace is preferably adapted to connect to the ladder attachment system described above.
  • the corner brace may be connected to the ladder frame by a pair of connecting arms extending between the rear surfaces of the plate portions and the ladder.
  • the connecting arms preferably taper into the respective plates where they meet the rear face.
  • the connecting arms preferably each extend inwards and towards each other as they extend from the ladder towards respective elbow portions at which point the arms extend outwards and away from each other towards the rear faces of the respective plates.
  • the elbow portions are curved.
  • the connecting arms may include connecting pipes for connecting to the ends of the bar of the ladder attachment system described above.
  • the connecting arms are relatively rigid as compared to the plate portions, thereby enabling the plate portions to flex towards or away from each other to accommodate adjoined surfaces having various profiles.
  • the pair of plate portions may be formed from a folded elongate length of plastics material.
  • the plate portions could be made from a length of folded metal or separate metal plates welded together.
  • the comer brace is able to flex at the fold which allows the plate portions to move towards or away from one another in order to accommodate various profiles of comer or curve with the plate portions resting against the respective adjoined surfaces.
  • a ladder attachment comprising a ladder sock for the end of a ladder upright, said sock having a first, open end to receive the end of a ladder upright and a second sealed end forming a protective cap, in use of said ladder said sealed end engaging a wall or floor to guard against movement relative to the wall or floor and scuffing or other damage to the wall or floor.
  • the second end protective cap may be formed of resilient and/or cushioning material.
  • the second end protective cap may form a friction grip on the wall or floor.
  • the second end protective cap may include a widened section with a generally curved face to engage a wall or floor.
  • the sock may have an elongate section between the first end and the second end, said elongate section including an elongate slot whereby the elongate section can be secured around different dimensions of ladder upright ends.
  • One or more ties may be provided for securing the elongate section around different dimensions of ladder upright ends.
  • a rung strap may be provided extending from the sock for engaging with a ladder rung thereby to secure the sock on a ladder upright end.
  • the second end may include a bore to receive a bar.
  • the bore may be square in cross section.
  • the sealed end nay further include one or more splined bores to receive splined shafts on ladder accessories.
  • the attachment may include an elongate bar with a v-shaped central section.
  • a strap may be provided for securing the apex of the v-shaped central section to a ladder rung.
  • the ends of the bar may include splined sections to engage with ladder accessories.
  • Figure 1 is a perspective view of a ladder sock according to the invention fitted over an upper end of a ladder stile;
  • Figure 2 is a perspective view of a ladder supported against a wall and having a ladder attachment system comprising a pair of ladder socks fitted over the ladder stiles, the system also including a bar extending between the socks;
  • Figure 3 is a section through the ladder and attachment system of Figure 2 taken along the line A-A in Figure 2;
  • Figure 4 is a rear elevation showing part of the ladder and attachment system of Figure 2;
  • Figure 5 is an exploded view of an end of the bar shown in Figure 2, a connector pipe of an accessory and a screw cap, showing how an accessory is connected to the bar;
  • Figure 5a is a cross-sectional view of the connector pipe in Figure 5;
  • Figure 6a is a perspective view of a window brace and a tool tray connected to the ladder attachment system of Figure 2;
  • Figure 6b is a perspective view of a stand-off bar connected to the ladder attachment system of Figure 2;
  • Figure 6c is a perspective view showing pad attachments connected to the socks shown in Figure 2;
  • Figure 7a is a rear elevation showing the upper end of the ladder of Figure 2, with the window brace of Figure 6a connected to the bar;
  • Figure 7b is a rear elevation showing the upper end of the ladder of Figure 2, with the window brace of Figure 6a connected to the bar;
  • Figure 8a is a plan view of the ladder and stand-off attachment shown in Figure
  • Figure 8b shows an alternate configuration of the stand-off attachment
  • Figure 8c is a section taken along the line B-B in Figure 6b showing a side elevation of the stand-off attachment
  • Figure 9a is a section taken along the line C-C in Figure 6c showing a side elevation of one of the pad attachments
  • Figure 9b is rear elevation in exploded form showing how the circular pad of
  • Figure 9a connects to the sock
  • FIGS 9c-e show pad attachments having various different types of pad
  • Figure 10 is a rear elevation showing the upper end of the ladder of Figure 2, with a wheel connected to bar;
  • Figure 11 shows a protective sleeve at the end of the bar shown in Figure 2;
  • Figure 12 shows a corner brace attachment
  • FIG 1 shows a ladder sock 10 fitted over an upper end 12 of a side rail 14 of a ladder 16.
  • the side rail 14 is hereinafter referred to as a "stile", and is indicated by the dashed lines in Figure 1.
  • the sock 10 is produced by single injection polymer moulding.
  • the sock 10 is formed of resilient and/or cushioning material which forms a friction grip on a wall or floor.
  • the sock 10 is generally elongate and comprises a first end 18 which defines an opening 20 for receiving the end of the ladder stile 14, and a closed second end 22 which is sealed and which defines a socket 24 for housing the end 12 of the stile 14 (as best seen in Figure 4).
  • the first end 18 is formed into an elongate sleeve 26 which partially surrounds a portion 28 of the stile 14.
  • the elongate sleeve 26 includes a cut-away elongate slot 30 which extends along a length of the sleeve 26.
  • a pair of straps 32 extend from one side of the sleeve 26 and are arranged to pass over the portion 28 of the stile 14 in the cut-away slot 30 and engage in slots 34 of respective buckles 36 located on the other side of the sleeve 26.
  • the straps 32 each include a series of teeth 38 for engagement with a ratchet pawl (not shown) in the respective buckles 36. This ratchet arrangement enables the straps 32 to be tightened easily by grasping and pulling.
  • the buckles 36 include a quick release button (not shown) which can be pressed to release the ratchet pawl and undo the strap 32 when the sock 10 is to be removed from the stile14 .
  • a third strap 40 depends from the first end 18 of the sock 10 and loops around a rung 42 of the ladder 16 to prevent the sock 10 from sliding axially along the stile 14.
  • the third strap 40 is secured in place by a peg 44 which protrudes from one of the buckles 36 and engages through one of a series of spaced apart apertures 46 in the third strap 40.
  • the second end 22 of the sock 10 includes a head portion 48 having a base 50 which is inclined relative to the axial length of the sock 10, and a main face 52 for engaging with a wall, floor or other such surface upon which the ladder 16 is supported.
  • the head portion 48 is relatively wide as compared to the rest of the sock 10.
  • the relatively wide head portion 48 provides an increased contact area with the supporting surface as compared to the contact area provided by the end 12 of the stile 14 itself, thereby reducing the risk of the ladder 16 slipping.
  • the head portion 48 is generally semi-circular in cross-section with the main face 52 being curved.
  • the curved main face52 allows the head portion 48 to roll over a supporting surface smoothly if the angle of inclination of the ladder 16 relative to that surface is altered, thereby preventing the ladder 16 from scraping against said surface.
  • the head portion 48 of the sock 10 includes a first bore 54 which extends completely through the head portion 48, and is provided to support a bar 56, hereinafter referred to as the "universal bar", as described in further detail below with reference to Figures 2 to 7.
  • the first bore 56 is substantially centrally located with respect to the semi-circular cross-section of the head portion 48.
  • the first bore 54 extends substantially perpendicular to the axial length of the sock 10. In other words, the first bore 54 extends substantially perpendicular to the ladder stiles 14, and substantially parallel to the ladder rungs 42 when the sock 10 is positioned on the stile 14 as shown in Figure 1.
  • the first bore 54 is substantially square in cross-section and conforms with the outer profile of the universal bar 56 ( Figure 2), thereby substantially preventing the universal bar 56 from rotating within the bore 54.
  • the corners of the square bore 54 are rounded in order to facilitate insertion of the universal bar 56.
  • the head portion 48 also includes a second bore 58 and a third bore 60 which are substantially circular in cross-section, and located respectively on either side of the first bore 54.
  • the second and third bores 58, 60 run parallel with the first bore 54 and serve as ports into which various accessories may be connected as described in further detail below.
  • FIG. 2 this shows a ladder 16 supported at its upper end 62 by a wall 64, and at its lower end 66 by a floor surface 68.
  • the ladder 16 has a ladder attachment system 70 fitted at its upper end 62.
  • the ladder attachment system 70 includes a pair of socks 10a, 10b which are each substantially identical to the sock 10 described above with reference to Figure 1 , except that one of the socks 10a is left-handed, and the other sock 10b is right-handed.
  • the socks 10a, 10b provide an interface between the ladder stiles 14 and the wall 64, thereby preventing movement of the ladder 16 relative to the wall 64, and scuffing or other damage to the wall 64.
  • a universal bar 56 can be seen extending between the pair of ladder socks 10a, 10b.
  • the universal bar 56 is an alloy casting, making it both light and strong.
  • the universal bar 56 is similar in shape to the handlebars of a bicycle, and comprises first and second ends 72, 74, separated by a substantially V-shaped midsection 76.
  • the first end 72 of the universal bar 56 extends through the first bore 54 in the left-handed sock 10a and projects outwards from said sock 10a, that is away from the ladder 16, in a direction substantially parallel to the ladder rungs 42.
  • the second end 74 of the universal bar 56 extends through the first bore 54 in the right- handed sock 10b and projects outwards from said sock 10b in a direction generally parallel to the ladder rungs 42.
  • the V-shaped section 76 of the universal bar 56 is located between the left and right socks 10a, 10b and above the final rung 78 of the ladder 16.
  • the universal bar 56 is oriented such that the apex of the V-shaped section 76 points towards the final rung 78, and an adjustable strap 80 is looped around the apex and the final rung 78.
  • the universal bar 56 and strap 80 arrangement serve to secure firmly the pair of socks 101 , 10b to the respective stiles 14, thereby preventing the socks 10a, 10b from becoming dislodged during use of the ladder 16.
  • the projecting first and second ends 72, 74 of the universal bar 56 each include an elongate connecting portion or shaft 82, to which various accessories can be attached, in addition to the second and third bores 58, 60 mentioned previously which also serve as attachment points for accessories.
  • One of these shafts 82 can be seen in more detail in Figure 4, which is a rear elevation of part of the upper end 62 of the ladder 16 of Figure 2.
  • the shaft 82 is provided with longitudinal splines 84 for engagement with corresponding grooves 86 in the bores 88 of connector pipes 90 which are associated with the various accessories as explained below with reference to Figure 5.
  • the shaft 82 at the other end of the universal bar 56 is substantially identical to the shaft 82 in Figure 4.
  • FIG. 5 is an exploded view showing the splined shaft 82 in Figure 4, a connector pipe 90 of an accessory and a screw cap 92.
  • the connector pipe 90 has a number of longitudinal splines 94 which define longitudinal grooves 86 in-between.
  • the splined shaft 82 is received within the splined bore 88 to connect the accessory to the universal bar 56.
  • the splines 84, 94 of the shaft 82 and bore 88 interlock, with the splines 84 of the shaft 82 engaging with the grooves 86 of the bore 88, thereby preventing relative rotation of the connected components.
  • the accessories are secured in place on the universal bar 56 by the screw caps 92 which are tightened by hand around threaded portions 96 at the ends of the splined shafts 82.
  • Figures 6a-c are perspective views showing various examples of accessories which can be connected to the socks 10a, 10b directly, or indirectly via the universal bar accessory 56.
  • Figure 6a shows a window brace attachment 98 which allows the ladder 16 to be positioned directly in front of a window 100 whilst being supported on either side of the window 100 rather than by the window 100 itself.
  • a moulded tool tray 102 is connected additionally tot the window brace attachment 98.
  • Figure 6b shows a stand-off bar attachment 104 attached to the universal bar 56 for distancing the top of the ladder 16 from a wall or other such surface.
  • Figure 6c shows a set of pads attachments 106 connected directly to the socks 10a, 10b.
  • Figure 7a is a rear elevation showing the top of a ladder 16 with the window brace attachment 98 of Figure 6a connected to the universal bar 56.
  • the window brace attachment 98 comprises a pair of cylindrical brace arms 108 which are arranged parallel to, and spaced apart from one another.
  • the pair of brace arms 108 are each connected at one end 110 to respective connector pipes 90, and at the other end 112 to a cylindrical window brace bar 114.
  • the pair of brace arms 110 are perpendicular to the window brace bar 114 and perpendicular to the elongate bores 88 of the connector pipes 90, which in turn are parallel to the window brace bar 114.
  • the window brace bar 114 is substantially parallel to the ladder rungs 42 in use.
  • the brace bar 114 and the pair of brace arms 108 define, together with the universal bar 56, a substantially rectangular region 116 which is occupied in this example by a tool tray 102 which clips onto the brace arms 108 by hooks 118 at each corner.
  • the window brace bar 114 is longer than the width of a standard window, and extends outwards to each side of the ladder 16.
  • the ends " of the window brace bar 114 are provided with tubular pads 120 which make contact with the wall 122 on either side of the window 100.
  • the tubular pads 120 are made from a synthetic rubber material such as neoprene.
  • the window brace bar 114 may be telescopically extendable making it suitable for use with larger windows or other apertures.
  • Figure 8a is a plan view of the ladder 16 and stand-off attachment 104 shown in Figure 6b.
  • the stand-off attachment 104 comprises two L-shaped bars 124a, 124b each having first and second sections 126, 128 which are orthogonal.
  • Each first section 126 includes a connector pipe 90 for connection to a respective end of the universal bar 56.
  • the L- shaped bars 124a, 124b are connected to the universal bar 56 in exactly the same way as the window brace attachment 98 described above, such that when they are connected, the first sections 126 are substantially perpendicular to the ladder rungs 42, and the second sections 128 are substantially parallel to the ladder rungs 42.
  • the L-shaped bars 124a, 124b are oriented with their second sections 128 extending towards one another.
  • the L-shaped bars 124a, 124b are connected to each other by a locking ring 130 which surrounds the ends 132 of the second sections 128 of the bars 124a, 124b and can be tightened by hand.
  • the two L-shaped bars 124a, 124b, together with the universal bar 56 define a substantially rectangular region 134 therebetween, in which a tool tray or other container may be installed in the same way as described above for the window brace attachment 98.
  • Figure 8b shows an alternate configuration of the stand-off attachment 104, in which the two L-shaped bars 124a, 124b have been exchanged, such that the left-hand L-shaped bar 124a in Figure 8a is connected on the right end 136 of the universal bar 56. Likewise, the right-hand L-shaped bar 124b in Figure 8a is connected on the left end 138 of the universal bar 56, although this is not shown in Figure 8b.
  • the L-shaped bars 124a, 124b include tubular pads 140 on their second sections 128 which can be moved longitudinally along the second sections 128 as illustrated by the double-headed arrow 142 in Figure 8b.
  • the pads 140 are also made from neoprene or other synthetic material. These pads 140 provide the contact points between the standoff attachment 104 and the wall or other such supporting surface.
  • Figure 8c is a section taken along the line B-B in Figure 6a showing how the stand-off bar 104 can be set at a variety of angles and locked in that position by virtue of the splined shafts 82 of the universal bar 56 and splined bores 88 of the connecting pipes 90 of the L-shaped bars 90.
  • Figure 9a is a section along the line C-C in Figure 6c showing a side elevation of one of the circular pads 144 positioned against the wall 146.
  • the pad 144 is connected to the second bore 58 in the head portion 48 of the sock 10 and provides an increased contact area between the ladder 16 and the wall 146.
  • Figure 9b is a rear elevation in exploded form illustrating the way in which the circular pad attachments 106 of Figure 6c attach to the sock 10.
  • the circular pad attachments 106 include an elongate connecting shaft 148 which inserts into the second bore 58 in the head portion 48 of the sock 10.
  • the second bore 58 includes a number of splines 150 which define grooves 152 in-between.
  • the splines 154 on the connecting shaft 148 engage with these grooves 152 when the shaft 148 is inserted into the bore 58, thereby preventing the shaft 148 from rotating within the bore 58, and hence locking the pad 144 in the chosen orientation with respect to the ladder 16.
  • the third bore 60 also includes splines 156, and hence the pad attachment 106 may equally well be inserted into the third bore 60.
  • Figures 9c-e show pad attachments 106 having various different pads 144.
  • the pad 144 in Figure 9c is relatively soft and is suited for use on delicate wall or floor surfaces which may scratch easily.
  • the pad 144 in Figure 9d is relatively hard and is suitable for rough wall or floor surfaces.
  • the pad 144 in Figure 9e includes a number of protrusions 158 in the form of spikes which provide additional grip, and guard against ladder slip.
  • the protrusions 158 may be steel pimples which are suitable for gripping wood or brick surfaces.
  • Figure 10 shows a wheel 160 mounted on one of the shafts 82 at an end of the universal bar 56.
  • a similar wheel 160 is mounted on the shaft 82 at the other end of the universal bar 56, although this is not shown.
  • the wheels 160 are secured in place by screw caps 92 which are received on the threaded ends 96 of the universal bar 56.
  • the ends of the universal bar 56 serve as axles about which the wheels 160 rotate.
  • the wheels 160 allow the ladder 16 to be rolled vertically up and down a wall or similar surface but prevent the ladder 16 from slipping sideways. It will be appreciated that various sizes of wheel 160 may be used, optionally with locking mechanisms.
  • Figure 11 illustrates a protective sleeve 162 which can be placed over the splined shafts 82 at the ends of the universal bar 56 when the universal bar 56 has no accessories attached.
  • the protective sleeves 162 are retained by the screw caps 92.
  • Figure 12 shows a corner brace attachment 164 connected to the universal bar 56.
  • the corner brace 164 allows the ladder 16 to be positioned against the apex 166 of a corner of a building or other structure and be supported against each of the walls 168a, 168b or surfaces forming that corner.
  • the corner brace 164 can also tuck behind a drain pipe 170 or similar obstruction near the corner.
  • the corner brace 164 is formed from an elongate rectangular length of flat polymeric material 172 which is folded in the centre 174 to form a V-shape comprising two elongate plate portions 176a, 176b.
  • Each plate portion 176a, 176b has a first end 178, a second end 180, a front surface 182 and a rear surface 184.
  • the first ends 178 of the respective plate portions 176a, 176b meet at the fold 174, and the plates portions 176a, 176b diverge towards their second ends 180 with their front surfaces 182 facing one another.
  • Each plate portion 176a, 176b is connected to the universal bar 56 by a rigid arm 186 having a first end 188 which includes a splined connector pipe 90, and a second end 190 which is connected to the rear surface 184 of the respective plate portion 176a, 176b.
  • the arms 186 are connected to the splined shafts 82 of the universal bar 56 in the same way as described previously for the other attachments.
  • the arms 186 each curve inwards and towards each other from their first ends 188 towards respective elbow portions 192. At the elbow portions 192, the arms 186 curve outwards and away from each other towards their second ends 190.
  • the second ends 190 of the arms 186 taper into the rear surfaces 184 of the respective plate portions 176a, 176b to which they are attached. This allows the plate portions 176a, 176b to slide easily between a drain pipe 170 and the wall 168a as shown in Figure 12 without the drain pipe 170 obstructing the corner brace 164. With the corner brace 164 in this position, the drain pipe 170 is located inside the elbow portion 192 of the arm 186. The curvature of the arm 186 is such that the arm 186 stands clear of the drain pipe 170.
  • corner brace 164 has been illustrated as an accessory for use with the specific ladder attachment described herein, it should be appreciated that the corner brace 164 can be readily adapted for retrofitting to any ladder through the provision of any suitable bracket or connecting means for connecting the corner brace to a ladder frame. Moreover, the corner brace could be integral with a ladder.
  • the stand-off attachment has been illustrated as an accessory for use with the specific ladder attachment described herein, it could also be adapted for connection to any ladder simply by the provision of any other suitable bracket or connecting device. Moreover, the stand-off attachment could be integral with a ladder.
  • the ladder attachment 70 described above is shown connected to the upper ends 62 of the ladder stiles 14, it will be appreciated that the attachment 70 may alternatively or additionally be secured on the lower ends 66 of the stiles 14.
  • many other accessories could be attached to the socks either via the splined bores, or via the universal bar accessory. These other accessories might include paint can arms, boots for soft or uneven ground, level wedges, stabilizer extensions, tree or pole straps to secure and prevent damage especially to trees, a topiary arm for example to spread over a hedge or bush surface, or a ridge hook with wheels.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ladders (AREA)

Abstract

L'objet de la présente invention concerne un procédé de fixation d'échelle constitué de : une paire de supports type chaussette pour échelle, chaque support ayant une première extrémité sur laquelle s'emboîte le montant d'échelle qui lui correspond ainsi qu'une seconde extrémité destinée à recevoir ladite extrémité dudit montant de l'échelle. Ces supports type chaussette sont adaptés pour fixer un ou plusieurs accessoires directement ou indirectement via une barre qui s'étend entre la paire de supports.
PCT/GB2007/001590 2007-05-01 2007-05-01 Fixation d'échelle et accessoires WO2008132418A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/GB2007/001590 WO2008132418A1 (fr) 2007-05-01 2007-05-01 Fixation d'échelle et accessoires

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/GB2007/001590 WO2008132418A1 (fr) 2007-05-01 2007-05-01 Fixation d'échelle et accessoires

Publications (1)

Publication Number Publication Date
WO2008132418A1 true WO2008132418A1 (fr) 2008-11-06

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ID=38957134

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Application Number Title Priority Date Filing Date
PCT/GB2007/001590 WO2008132418A1 (fr) 2007-05-01 2007-05-01 Fixation d'échelle et accessoires

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Country Link
WO (1) WO2008132418A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2005465A (en) * 2009-10-07 2011-04-11 Lampe Holding B V Portable ladder with a stand off device.
GB2501244A (en) * 2012-03-28 2013-10-23 John Leahy Ladder platform
WO2021204973A1 (fr) * 2020-04-08 2021-10-14 Antovation Ltd Dispositif de maintien d'une échelle selon un angle de travail souhaité
GB2603745A (en) * 2020-12-18 2022-08-17 Brilliant Ideas Ltd Ladder safety device

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1994369A (en) * 1933-04-26 1935-03-12 H F Husted Company Pole gripper for ladders
US2925877A (en) * 1958-04-22 1960-02-23 Allen J Wright Ladder top bumper
FR2166783A5 (fr) * 1972-01-05 1973-08-17 Arnold Emile
US3828889A (en) * 1973-09-13 1974-08-13 Bauer Corp Multiple accessory attachment for ladders
GB2115474A (en) * 1982-02-06 1983-09-07 Samuel David Smith Ladder attachments
DE19607761A1 (de) * 1996-03-01 1997-09-04 Hymer Leichtmetallbau Leiternschuh für Leitern beliebiger Art
US6158551A (en) * 1999-02-25 2000-12-12 Gray; Earl Extension ladder shelf
FR2798958A1 (fr) * 1999-09-24 2001-03-30 Dimos Sa Dispositif de securite
US6405828B1 (en) * 2000-09-01 2002-06-18 William A. Redding Protective ladder attachment
JP2003148073A (ja) * 2001-08-29 2003-05-21 Taku Yoshizaki 梯子の安定保持具及びその安定保持具を用いた梯子
GB2385879A (en) * 2002-01-30 2003-09-03 John Kennedy Fletcher Ladder stabilising attachment
GB2386920A (en) * 2002-03-26 2003-10-01 Alan John Dinham Attachment for supporting the head of a ladder over a window or opening
EP1388640A1 (fr) * 2002-08-09 2004-02-11 Innovations for Trade and Technology Dispositif de sécurité
WO2006104395A1 (fr) * 2005-03-27 2006-10-05 David Laurance Drury Support pour echelle
GB2431687A (en) * 2005-10-25 2007-05-02 Peter Saag Ladder head accessory

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1994369A (en) * 1933-04-26 1935-03-12 H F Husted Company Pole gripper for ladders
US2925877A (en) * 1958-04-22 1960-02-23 Allen J Wright Ladder top bumper
FR2166783A5 (fr) * 1972-01-05 1973-08-17 Arnold Emile
US3828889A (en) * 1973-09-13 1974-08-13 Bauer Corp Multiple accessory attachment for ladders
GB2115474A (en) * 1982-02-06 1983-09-07 Samuel David Smith Ladder attachments
DE19607761A1 (de) * 1996-03-01 1997-09-04 Hymer Leichtmetallbau Leiternschuh für Leitern beliebiger Art
US6158551A (en) * 1999-02-25 2000-12-12 Gray; Earl Extension ladder shelf
FR2798958A1 (fr) * 1999-09-24 2001-03-30 Dimos Sa Dispositif de securite
US6405828B1 (en) * 2000-09-01 2002-06-18 William A. Redding Protective ladder attachment
JP2003148073A (ja) * 2001-08-29 2003-05-21 Taku Yoshizaki 梯子の安定保持具及びその安定保持具を用いた梯子
GB2385879A (en) * 2002-01-30 2003-09-03 John Kennedy Fletcher Ladder stabilising attachment
GB2386920A (en) * 2002-03-26 2003-10-01 Alan John Dinham Attachment for supporting the head of a ladder over a window or opening
EP1388640A1 (fr) * 2002-08-09 2004-02-11 Innovations for Trade and Technology Dispositif de sécurité
WO2006104395A1 (fr) * 2005-03-27 2006-10-05 David Laurance Drury Support pour echelle
GB2431687A (en) * 2005-10-25 2007-05-02 Peter Saag Ladder head accessory

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2005465A (en) * 2009-10-07 2011-04-11 Lampe Holding B V Portable ladder with a stand off device.
WO2011043663A1 (fr) * 2009-10-07 2011-04-14 Lampe Holding B.V. Echelle portable comportant un dispositif de recul
US8844675B2 (en) 2009-10-07 2014-09-30 Lampe Holding B.V. Portable ladder with a stand off device
EP2711496A3 (fr) * 2009-10-07 2014-10-01 Lampe Holding B.V. Échelle potable avec dispositif vertical
US9488003B2 (en) 2009-10-07 2016-11-08 Lampe Holding B.V. Portable ladder with a stand off device
GB2501244A (en) * 2012-03-28 2013-10-23 John Leahy Ladder platform
GB2501244B (en) * 2012-03-28 2018-04-04 Leahy John Secure platform for a ladder
WO2021204973A1 (fr) * 2020-04-08 2021-10-14 Antovation Ltd Dispositif de maintien d'une échelle selon un angle de travail souhaité
GB2609848A (en) * 2020-04-08 2023-02-15 Antovation Ltd Device for holding a ladder at a desired working angle
GB2603745A (en) * 2020-12-18 2022-08-17 Brilliant Ideas Ltd Ladder safety device

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