AU2017204807A1 - Ladder Safety Lateral Support Stabiliser System - Google Patents

Abstract

LADDER SAFETY LATERAL SUPPORT STABILISER SYSTEM A ladder lateral stabiliser system for stabilising a ladder which comprises an elongate adjustable length support leg; a locking mechanism adapted to selectively lock the length of the support length; a pivot mounting adapted to pivotally mount the support leg to a stile of the ladder; a means of retaining and stowing the support leg to a stile of the ladder; wherein when installed on a ladder, the support leg is pivotable from a stowed configuration in which the support leg has an extended length and projects obliquely from stile towards the ground with the leg including a pivotable foot adapted to engage to the ground and where the pivot mounting is adapted to allow the support leg to pivot and to limit pivoting of the support leg about the fulcrum member by the upper end of the support leg abutting at one or more points against both the mounting bracket and or the pivot plate to indexingly lock the pivot member relative to the mounting member in either the deployed or a stowed position. The ladder lateral stabiliser has a latch safety support system which may be used to further secure the stabiliser support legs of the system to the ladder to provide added stability of the ladder and stabiliser system whereby the latch safety support system is secured to the ladder by means of a hooked latched that is formed as part of the telescopically adjustable support arm and placed secured into a mounting bracket that is attached to the stabiliser support legs of the ladder lateral stabiliser system. I' I can--

Description

LADDER SAFETY LATERAL SUPPORT STABILISER SYSTEM

Field of the Invention

The present invention relates to a ladder safety lateral support stabiliser system incorporating a robust dual axis joint and connection means wherein adjustable length lateral supports may be conveniently applied to either stile of a fixed length, extension, step, or combination / convertible ladder, the lateral support stabiliser also being identical and not requiring specific left and right hand stabilisers for either side of the ladder.

Background of the Invention

Ladders can be particularly dangerous and unstable. The further a user ascends the ladder, the higher the combined ladder and user centre of gravity and thus the greater the instability, this substantially increasing the potential of injury to the user from the ladder falling.

The stability of a ladder is also greatly affected by a user reaching or leaning beyond the stiles of the ladder or even from the centre of the ladder stiles. Stability may be further greatly affected by uneven or unfirm ground.

The lack of stability of ladders - particularly in a direction - presents serious safety concerns for users of ladders and is of particular concern with respect to the occupational health and safety of workers who regularly use ladders.

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Summary of the Invention

In a first aspect the present invention provides a ladder lateral stabiliser for stabilising a ladder, the ladder lateral stabiliser comprising:

An elongatable adjustable length support leg;

A locking mechanism adapted to selectively lock the length of the support leg;

A pivot mounting adapted to pivotally mount the support leg to a stile of the ladder;

A means of retainingly stowing the support let to a stile of the ladder; wherein when installed on a ladder, the support leg is pivotable from a stowed configuration in which the support leg has a retracted length and extends parallel to the stile and a deployed configuration, in which the support leg has an extended length and projects obliquely from the stile towards the ground.

Preferably, the pivot mounting is adapted to allow the support leg to pivot about two substantially perpendicular axes.

In a preferred embodiment, the pivot mounting comprises:

A mounting member adapted to be fixed to the stile of a ladder, the mounting member having a bearing aperture;

A pivot member pivotally mounted to the mounting member by means of a shaft received in the bearing aperture:

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A mounting bracket provided on the pivot member, the mounting bracket incorporating a fulcrum member, wherein the fulcrum member passes through the support leg, pivotally mounting the support leg to the mounting bracket.

Preferably, the mounting bracket is adapted to limit pivoting of the support leg about the fulcrum member by the upper end of the support leg abutting at one or more points against both the mounting bracket and or the pivot plate.

In a preferred embodiment the pivot member includes an arcuate slot and the mounting member includes a limit pin received in the arcuate slot wherein the limit pin is adapted to limit pivoting of the pivot member relative to the mounting member when the limit pin abuts an extremity of the arcuate slot.

Preferably the pivot mounting incorporates a locking device adapted to indexingly lock the pivot member relative to the mounting member in either the deployed position or a stowed position.

Further preferably the locking device comprises a threaded shaft passing through the stile of the ladder and the mounting plate in at least two positions and a corresponding threaded aperture in the pivot member, the depth and integrity of the threaded aperture being optionally enhanced by employment of an extended boss incorporated in the pivot member.

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Optionally the locking device may engage the pivot member and the mounting member to each other without necessitating full removal of the threaded shaft by providing a slot between positional apertures in the stile of the ladder and the mounting member and a pair of flats partially relieved upon the length of the threaded shaft where it passes through the mounting member and the stile of the ladder.

Further optionally the locking device may comprise a pull pin or latch mounted to the pivot member and actuating upon apertures, slots or stops incorporated in or upon the mounting member or mounted to the mounting member and acting upon apertures, slots or stops incorporated in or upon the pivot member.

Optionally the support leg includes a pivotable foot adapted to engage the ground.

in a preferred embodiment the foot may incorporate a cleft adapted to engage with a stowage pin projecting from the stile of the ladder to assist in securing the support leg to the stile in the stowed configuration.

Alternatively for the same purpose the foot may be accommodated in a saddle incorporated with a stile.

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Preferably the support leg comprises an upper member connected to the pivot mounting and a lower member mounted telescopically to the upper member.

In a preferred embodiment the telescopic support leg locking means may comprise a series of apertures in one member and at least one aperture in the other member whereby a locking pin may positionally engage the members to each other.

Optionally the single aperture in one member, referred to immediately above may be supplemented by additional apertures, out of phase with the series of apertures in the other member, wherein incremental elongations of the support leg may be positionally facilitated.

Brief Description of the Drawings

Not withstanding any other forms which may fall within the scope of the present invention, preferred embodiments of the invention will now be described by way of example only, to which it is not limited, with reference to the accompanying drawings in which:

Fig 1 depicts a step ladder employing the stabilisation device of the present invention:

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Fig 2 depicts a step ladder employing the stabilisation device of the present invention in an alternative way without the rear section 6 of step ladder opened;

Fig 3 is an enlarged view of the pivot mounting assembly of the stailisation device 11 of Fig 1 showing all the individual components parts of the assemble in pieces as when disassembled;

Fig 4 is an enlarged view of the pivot mounting assembly of the stabilisation device of Fig 3 depicting the mounting assembly with all the individual components assembled together in working order as shown at 11 of Fig 1;

Fig 5 is an enlarged view of the stabilisation device pivotable foot and mounting bracket by which the stabilisation device stands engaged to the ground;

Fig 6 is an enlarged view of the stabilisation device pivotable foot base as shown in Fig 5 attached to the mounting bracket of the stabilisation device pivotable foot; Fig? illustrates the latch safety support system that may be secured to the ladder lateral support stabiliser support legs for added stability of the ladder and stabiliser system;

Fig 8 illustrates the ladder lateral support stabiliser and the latch safety support as attached and secured to the ladder to provide the required safety and stability offered by the invention to the ladder.

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Detailed Description of the Preferred Embodiments

As shown in Fig 1 a step ladder is arranged in an open usage configuration and comprises a front section 2, having first and second styles 3, 4, interconnected with steps 5, and a rear section 6 pivotally connected at a top end 7 to the front section 2. Struts 8 brace the front section 2 and rear section 6 in the open configuration.

The step ladder is fitted with a ladder safety support system having a pair of stabilisation devices, each comprising a lockable, telescopically adjustable length support leg, having a lower section 9, telescopically received in a upper section 10. The upper section 10 of the support leg is mounted and retained to the ladder at its top end by a pivoting mount 11 assembly and the lower section has a pivotable foot 12 at the bottom end.

The lower section of the support leg 9 is provided with a plurality of positioning apertures 13 along an upper end of the lower section 9. The upper section 10 is provided with an aperture 14 or optionally several apertures such as indicated by 14, and 16, each of which are out of phase with the plurality of apertures 13 in the lower section. A pip or fractionally engaging pin is furnished to pass retainingly through the selected aligned aperture in the upper and lower sections.

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An alternative stabilisation device retention means is depicted in Fig 2. The ladder safety support system also includes a means of retaining the stabilisation devices 10 in a stowed position and the retaining means is depicted in a alternative way in Fig 2 at 18 in the form of a pin 15 projecting from the stabilisation device 10, the said pin having an enlarged head or a groove, not shown, and engagable with a cleft 17 in the pivotable foot 12.

The pivot mounting assembly 11 is shown in greater detail in Fig 3 and includes a mounting member 22 having a plurality of mounting apertures 23 through which may be passed fasteners (not shown) whereby the pivot mounting assembly may be retained to the stile of the ladder. Also provided on the mounting member is a bearing aperture 24 and a curved rail 25 with an inwardly facing flange as well as a pair of individual indexing apertures 26 and 27.

The pivot mounting assembly also includes a pivot member 28 having a pivot aperture 29. A pivot shaft 30 having an enlarged head 31 is adapted to pass through both the aperture 29 in the pivot 28.

2017204807 11 Jul 2017 and aperture 24 in the mounting member 22 and is secured by a threaded fastener 32 in the case of a threaded pivot shaft or by other means (not shown), in the case of a plain shaft, thereby pivotly securing the pivot member to the mounting member.

Additional retention integrity of the pivot member to the mounting member may be provided through the bearing of a cured and inwardly facing flanged rail 25 upon the peripheral face of the pivot member as indicated by interrupted line 33.

A threaded aperture 34 is provided upon the pivot member 28 and this may be furnished with a reinforcing boss 35, such that a threaded shaft furnished with a head or knob 36 passing through a recess (not shown) in the stile of the ladder and one or the other of the indexing apertures 26 or 27 may secure the pivot member in either of two positions, i.e. for use or stowage. The treaded shaft and head or knob 36 may be furnished with a plain i.e. unthreaded or shoulder section (not shown) adjacent to its said head or knob.

Alternatively to the individual indexing apertures 26 and 27 a straight or optionally arcuate slot (not shown) having a width equal to the diameter of apertures 26 and 27 may be formed linking the said apertures 26 and 27 whereby the pivot member may be alternated between the use or stowage positions simply by loosening the

2017204807 11 Jul 2017 threaded shaft without nescesitating its removal and then tightening in the desired position, the tightness of the threaded shaft thereby securing the position of the pivot member relative to the mounting member.

Alternatively the width of the arcuate slot formed between apertures 26 and 27 described above (and also not shown) may be less than the diameter of the said apertures and the threaded shaft 36 may incorporate optionally a reduced diameter (not shown) or a pair of flats (not shown), slightly less than the width of the slot, partially upon its length, either being at least equal to the thickness of the mounting member, whereby loosening of the threaded shaft, sufficient to align either its reduced diameter or pair of flats with the slot may fascilitate alternating the position of the pivot member relative to the mounting member and then tightening in the desired position, wherein its positional security will be enhanced by the fullness of the diameter of the threaded shaft within either aperture 26 or 27 rather than merely the tightness of the threaded shaft and its head against the mounting member.

The pivot member may be furnished with an arcuate slot 37 adapted to receive a limited pin with an extended head 38 projecting from the mounting member whereby the movement of the pivot member may be restricted to the required

2017204807 11 Jul 2017 operating range of the stabilising support leg and the extended head of the pivot jin may enhance the security of the pivot member to the mounting member.

<\ mounting bracket 39 on the pivot member is adapted to receive an upper end of :he upper section 10 of the stabilising support leg. The upper section 10 of the stabilising support leg is secured in the mounting bracket 39 via a fuicrum member 40 passing through an aperture 41 in the upper end of the upper section jf the support leg and apertures 42 in the mounting bracket, the movement of the support leg is limited by the abutment of the upper end of the upper section of the support leg within the bracket 39 and as indicated by 43 and 44.

The fulcrum member 40 and the pivot shaft 30 allow the adjustable length stabilising support leg to pivot with two degrees of freedom.

The ladder lateral stabiliser may be retro-fitted to a ladder by securing the mounting member 22 via mounting apertures 23 to the stile near the top of the ladder for the greatest mechanical advantage.

When not deployed, the ladder lateral stabilizer may be secured alongside the stile 3 by engaging the cleft 20 of the pivotable foot 12 with the retaining pin 18 or alternatively engaging the pivotable foot 12 within the saddle 21, in either case the

2017204807 11 Jul 2017 non-deployed position being maintained through locking of the stabilising support legs length via inserting the locking pin 17 through aligned apertures in the lower 9 and upper 10 sections of the support leg. The threaded fastener 36 may be engaged into the threaded aperture 34 via the aperture 26 in the mounting member, this being the non-deployed stowage position for the left side pivot mounting assembly.

To deploy each stabilisation device a user opens the ladder and unlocks the support leg from the stowed mode by withdrawing the locking pin 17.

This allows the lower section 9 of the support leg to slide telescopically relative to the upper section 10. By sliding the lower section 9 upwards, the pivotable foot at the lower extremity of the support leg may disengage from the retaining means.

Next the threaded shaft 36 is unscrewed from the threaded aperture 34. This allows the pivot member 28 to pivot about the pivot shaft 30 relative to the mounting member 22 and within the range allowed by the limit pin 38 sliding in the arcuate slot 37.

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Where the mounting member has been furnished with a plain or arcuate slot between apertures 26 and 27 the pivot member may be pivoted relative to the mounting member by loosening the threaded shaft without nescesitating removal.

To set the stabilisation device, the support leg is pivoted outward, obliquely from the ladder, about the fulcrum member 40, until the upper end of the upper section 10 abuts at 43 and 44 with the mounting bracket and or pivot member Simultaneously, the stabilisation device may also be pivoted about the pivot shaft 30, clockwise for the left side support leg and counter-clockwise for the right side support leg, until the limit pin 38 abuts against the opposite extremity of the arcuate slot 37 from its stowage position, these being reversed for either side of the ladder, whereupon the support leg will be centered between the front and rear of the open ladder and the threaded aperture 34 will be aligned with the appropriate use aperture in the mounting member, thereby facilitating screwing of the threaded shaft 36 into the aperture 34 and thus positively securing the support leg in the usage angle position.

The lower section of the support legs are telescopically extended obliquely until the foot engages with the ground and the locking pin 17 is inserted through an aligned aperture in the upper telescoping section of the support leg and one of the plurality of apertures in the lower section, the out of phase disposition of the

2017204807 11 Jul 2017 apertures in the upper section where furnished, with the apertures in the lower section facilitating lockable and incremental telescopically adjustable length adjustment of the support leg.

The above procedure is repeated for both stabilisation devices resulting in the deployed configuration shown in Fig 1. and upon completion of use of the ladder, the deployment procedure is reversed to stow the stabilisation devices back against the respective stiles.

In Fig 7, the illustration shows a latch safety support system that may be used to secure the stabiliser support legs at 10 to the ladder, as depicted in Fig 8, by means of a hooked latch at 47 that is placed and secured into a mounting bracket at 48. The hooked latch at 47 is formed as part of the lockable telescopically adjustable support arm 50 with a plurality of positioning apertures 49 and which is telescopically received and attached to the telescopically receiving arm 51 through a hollow housing 56 through which the adjustable support arm 50 is passed through.

The telescopically adjustable support arm 50 engages and locks to the telescopically receiving support arm 51 by means of the extruding pin 55 that passes through the plurality of positioning apertures 49 to engage and lock the

2017204807 11 Jul 2017 arms together. This is further illustrated as shown and depicted in Fig 8 where the telescopically adjustable support arm 50 has been passed through the hollow housing 56 of the telescopically receiving support arm 51 attaching the arms together and which have also been locked together by means of the extruding pin that passes through the plurality of positioning apertures 49.

The telescopically receiving support arm 51 is secured to the ladder by means of a folded metal hinge 52 looped through a permanently secured curved metal latch 54 that is permanently secured to the ladder by threaded screws 57. The folded metal hinge 52 is looped through to attach together to the telescopically receiving support arm 51 and secured by a locked non-threaded pin 53 that passes through the holes within the folded metal hinge 52 and the telescopically receiving support arm 51 at the point where the pin 53 passes through. This is further illustrated in Fig 8 at the points 52, 54 and 57 and showing the permanently secured metal latch 54 as secured to the ladder by means of threaded screws at 57 and showing the folded metal hinge 52 as looped through the secured metal latch 54 and attached to the telescopically receiving support arm 51 by means of a nonthreaded pin at 53 and whereby still allowing a swivel movement of the adjustable arms 50 and 51.

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At this point there is a small space where the non-threaded pin 53 passes through the holes to allow the free swivel movement of the telescopically adjustable supports arms 50 and 51 while still secured together to the ladder and to the stabiliser support legs at 10, to enable the lifting of the telescopically adjustable support arms 50 and 51 for fitting and removal from the latched position of the hooked latch 47 with the mounting bracket at 48.

In Fig 8 the illustration shows the latch safety support system as attached to the ladder and to the ladder lateral support stabiliser system as depicted and described in Fig 7 above and employing the latch safety support system in a fully extendable state. The latch safety support system thereby provides additional stability and support to the ladder lateral support stabiliser system as attached to the ladder and providing greater overall safety and support.

The ladder lateral stabiliser is depicted as a retro-fitted unit. However the ladder lateral stabiliser may alternatively be incorporated into the stile of the ladder during manufacture.

With both stabilisation devices deployed, the step ladder has a greater and more stable footprint making it far more stable and very difficult to tip the ladder in a lateral direction. The stabilisation devices are effectively braced against one

2017204807 11 Jul 2017 another and inward pivoting of the support legs is further prevented by their oblique engagement with the ground at a position apart from the legs of the ladder itself.

Ladders employing the ladder safety support system are much safer to use and greatly reduce the chances of a ladder tipping in a lateral direction due to uneven ground or lateral reaching by the user beyond the footprint of the ladder, such a ladder safety support system is invaluable in providing appropriate and occupational health and safety measures for the use of ladders.

It should be noted that the invention may be formed from many different natural or synthetic materials, for example metal and / or plastics. Different components of the stabilisation devices may be formed from different materials in order to provide desired properties of strength, weight, rigidity and resiliency etc.

Although the invention has been described with reference to specific examples, it will be appreciated by those skilled in the art that the invention may be embodied in many other forms. For example, whilst the invention has been described for use in conjunction with step ladders, it will be appreciated that the stabilisation devices may be equally applied to single and extension ladders.

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The invention may also be said broadly to consist in or of parts, elements and features as illustrated and or referred to in the description of the invention, individually or collectively, in any or all combinations of parts or a plurality of said parts, elements or features.

Where specific integers are mentioned which have known equivalents in the art/s to which the invention relates, such known equivalents are deemed to be incorporated as if individually set forth.

Although preferred embodiments may have been described in detail, it should be understood that various changes, substitutions and alterations may be made herein by those of ordinary skills in the relevant art/s without departing from the spirit or scope of the present invention.

The inventor asserts his moral rights to be recognised as the creator and owner of this invention and design and the Intellectual Property therein together with copyright in this description and illustrations.

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Some features defining the invention include all the aspects set forth in the description and illustrated in the drawings.

INVENTOR: MICHAEL DANHA

Dated this........................... Day of

LADDER SAFETY LATERAL SUPPORT STABILISER SYSTEM

Claims (20)

1. Claims

   1. A ladder lateral stabiliser system for stabilising a ladder which comprises: an elongate adjustable length support leg; a locking mechanism adapted to selectively lock the length of the support length; a pivot mounting adapted to pivotally mount the support leg to a stile of the ladder; a means of retaining and stowing the support leg to a stile of the ladder; wherein when installed on a ladder, the support leg is pivotable from a stowed configuration in which the support leg has an extended length and projects obliquely from the stile towards the ground.
2. 2. A ladder lateral stabiliser system as claimed in claim 1 wherein the pivot mounting is adapted to allow the support leg to pivot about two substantially perpendicular axes.
3. 3. A ladder lateral stabiliser system as claimed in claim 1 or 2 wherein the pivot mounting comprises: a mounting member adapted to be fixed to the stile of the ladder, the mounting member having a bearing aperture; a pivot member pivotally mounted to the mounting member by means of a shaft in the bearing aperture.

   LADDER SAFETY LATERAL SUPPORT STABILISER SYSTEM

   2017204807 11 Jul 2017

   Claims

   1. A ladder lateral stabiliser system for stabilising a ladder which comprises: an elongate adjustable length support leg; a locking mechanism adapted to selectively lock the length of the support length; a pivot mounting adapted to pivotally mount the support leg to a stile of the ladder; a means of retaining and stowing the support leg to a stile of the ladder; wherein when installed on a ladder, the support leg is pivotable from a stowed configuration in which the support leg has an extended length and projects obliquely from the stile towards the ground.

   2. A ladder lateral stabiliser system as claimed in claim 1 wherein the pivot mounting is adapted to allow the support leg to pivot about two substantially perpendicular axes.

   3. A ladder lateral stabiliser system as claimed in claim 1 or 2 wherein the pivot mounting comprises: a mounting member adapted to be fixed to the stile of the ladder, the mounting member having a bearing aperture; a pivot member pivotally mounted to the mounting member by means of a shaft in the bearing aperture.

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4. 4. A ladder lateral stabiliser system as claimed in claim 1,2, or 3 wherein a mounting bracket provided on the pivot member, the mounting bracket incorporating a fulcrum member, wherein the fulcrum member passes through the support leg, pivotally mounting the support leg to the mounting bracket.
5. 5. A ladder lateral stabiliser system as claimed in claim 4 wherein the mounting bracket is adapted to limit pivoting of the support leg about the fulcrum member by the upper end of the support leg abutting at one or more points against both the mounting bracket and or the pivot plate.
6. 6. A ladder lateral stabiliser system as claimed in claim 3 or 4 wherein the pivot member includes an arcuate slot and the mounting member includes a limit pin received in the arcuate slot wherein the limit pin is adapted to limit pivoting of the pivot member relative to the mounting member when the limit pin abuts an extremity of the arcuate slot.
7. 7. A ladder lateral stabiliser system as claimed in any of the above claims wherein the pivot mounting incorporates a locking device adapted to indexingly lock the pivot member relative to the mounting member in either the deployed position or a stowed position.

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8. 8. A ladder lateral stabiliser system as claimed in claim 7 wherein the locking device comprise; a threaded shaft passing through the stile of the ladder and the mounting plate in at least two positions and a corresponding threaded aperture in the pivot member, the depth and integrity of the threaded aperture being optionally enhanced by employment of an extended boss incorporated in the pivot member.
9. 9. A ladder lateral stabiliser system as claimed in claim 7 or 8 wherein the locking device may engage the pivot member and the mounting member to each other without necessitating full removal of the threaded shaft by providing a slot between positional apertures in the stile of the ladder and the mounting member and a pair of flats partially relieved upon the length of the threaded shaft where it passes through the mounting member and the stile of the ladder.
10. 10. A ladder lateral stabiliser system as claimed in any of the above claims wherein the locking device may comprise a pull pin or latch mounted to the pivot member and actuating upon apertures, slots or stops incorporated in or upon the mounting member or mounted to the mounting member and acting upon apertures slots or stops mounting in or upon the pivot member.
11. 11. A ladder lateral stabiliser system as claimed in any of the above claims wherein the leg includes a pivotable foot adapted to engage to the ground.

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12. 12. A ladder lateral stabiliser system as claimed in any of the above claims wherein the foot may incorporate a cleft adapted to engage with a stowage pin projecting from the stile of the ladder to assist in securing the support leg to the stile in the stowed configuration.
13. 13. A ladder lateral stabiliser system as claimed in any of the above claims wherein alternatively for the same purpose the foot may be accommodated in a saddle incorporated with a stile.
14. 14. A ladder lateral stabiliser system as claimed in any of the above claims wherein the support leg comprises an upper member connected to the pivot mounting a lower member mounted telescopically to the upper member.
15. 15. A ladder lateral stabiliser system as claimed in any of the above claims wherein the telescopic support leg locking means may comprise a series of apertures in one member and at least one aperture in the other member whereby a locking pin may positionally engage the members to each other.

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16. 16. A ladder lateral stabiliser system as claimed in any of the above claims wherein the single aperture in one member, referred to immediately above may be supplemented by additional apertures, out of phase with the series of apertures in the other member, wherein incremental elongations of the support leg may be positionally facilitated.
17. 17. A ladder lateral stabiliser system as claimed in any of the above claims wherein a latch safety support system may be used to further secure the stabiliser support legs of the ladder lateral stabiliser system to provide added stability of the ladder and stabiliser system.
18. 18. A ladder lateral stabiliser system as claimed in claim 17 whereby the latch safety support system is secured to the ladder by means of a folded metal hinge looped through a permanently secured curved metal latch that is permanently secured to the ladder by threaded screws and which the folded metal hinge is looped together to attach to the telescopically adjusted support arms and secured by a locked non-threaded pin that passed through the holes within the folded metal hinge and the telescopically receiving support arms and whereby still allowing a swivel movement of the adjustable support arms.

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19. 19. A ladder lateral stabiliser system as claimed in 17 and 18 whereby the telescopically adjustable support arms of the latch safety support system engage and lock together by means of an extruding pin from one arm that passes through the plurality of positioning apertures of the other arm to engage and lock the telescopically adjustable support arms together.
20. 20. A ladder lateral stabiliser system as claimed in claims 17, 18, and 19 whereby the latch safety support system is secured to the stabiliser support legs of the ladder lateral stabiliser system by means of a hooked latch that is formed as part of the telescopically adjustable support arm and placed and secured into a mounting bracket that is attached to the stabiliser support legs of the ladder lateral stabiliser system.