AU2016253584B2 - Apparatus for Mounting to a Post - Google Patents

Abstract

- 45 An apparatus (10, 10') is disclosed for mounting to a post (100, 200, 300, 300', 400). The post is of a type that comprises an elongate flange (102, 202, 302, 402) that has at least one aperture (104, 204, 304, 404) through the flange. The post also comprises at 5 least one passage (106, 206, 306, 406) that is spaced from the aperture. The passage extends into the flange from a distal edge (110, 210, 310, 410) of the flange. The apparatus (10, 10') comprises a first leg (12, 212) and a second leg (14, 214). The legs are connected at their proximal ends by a connector (16, 216). The connector is able to be located in the passage. Each leg comprises a formation (18, 20; 218, 220) at its distal 10 end that is able to be located at the aperture to mount the apparatus to the post. The first leg extends at a first angle (A) with respect to the connector and the second leg extends at a second angle (B) with respect to the connector. The second angle is less than the first angle. 8363789_1 (GHMatters) P101 060.AU.2 2/11/16 -XXXXXX: 0a

Description

APPARATUS FOR MOUNTING TO A POST

TECHNICAL FIELD

An apparatus for mounting to a post is disclosed, as well as a post, system and method that employ the apparatus. The apparatus can be employed to retain a strand at a post. The apparatus, post, system and method find particular application in fencing, to retain wire strands to a fence post, though can be employed in applications such as demarcation, signage, retention, barricades, etc. The term “strand” as employed herein is to be broadly interpreted to include various elongate components that can be secured to a post. The term “post” as employed herein is to be broadly interpreted to include upright posts, rails, cross-members, struts, stays, channels, sections, etc.

BACKGROUND ART

Posts for use in applications such as fencing, demarcation, signage, etc are known. Such posts are usually formed from steel, though in some applications it is known to mould posts from a plastic material (e.g. for use in electric fencing).

Steel fence posts have been known for many years that are roll-formed to have a Y-shaped or T-shaped profile (i.e. in end view). The post may take the form of a picket and in this case may be provided (e.g. cut) with a pointed end to facilitate post driving into the earth.

Such steel fence posts are usually provided with a series of spaced holes in a flange thereof (i.e. in the so-called “stalk” or “stem” of the post) to enable strands of fencing wire to be secured to the post, usually by tying each wire strand to the post with a separate short length of wire tie threaded through an individual hole, or by employing a wire “clip”. However, the wire can also be directly threaded through such holes.

These holes are typically punched into an already roll-formed post in a separate step.

In addition (or as an alternative) to the series of holes, the posts can be provided with a series of spaced passages, slots or notches that are usually machined to project right into the stalk from a distal edge thereof. These passages enable a strand of fencing wire to be moved into and retained in the passage, thereby securing the wire directly to the post. Again, these passages are typically machined into an already roll-formed post in a separate step.

For posts provided with spaced passages, slots or notches, an additional wire strand retention device can be fitted to the post. This retention device is employed to maintain each wire secured in its respective passage, slot or notch of the post. Often, the fitting of this device can be a relatively complex and/or costly procedure, for example, requiring factory-fitting to the post in a separate manufacturing stage.

Examples of such retention devices and systems include those shown in US 8540217, US 3606259, US 1022314, US 622345, US 796313 and AU 2015100851.

The above references to the background art do not constitute an admission that the art forms a part of the common general knowledge of a person of ordinary skill in the art. The above references are also not intended to limit the application of the apparatus, post, system and method as disclosed herein.

SUMMARY OF THE DISCLOSURE

Disclosed herein is an apparatus for mounting to a post. When mounted, the apparatus may be employed to retain a strand (e.g. of wire) at the post. The apparatus can be employed in other applications such as demarcation, signage, retention, barricades, etc.

The type of post to which the apparatus can be mounted can comprise an elongate flange. The flange can have at least one aperture therethrough. In addition, at a location spaced from the aperture, the flange can have at least one passage that extends into the flange from a distal edge thereof. The apparatus cooperates with both the aperture and passage.

The apparatus as disclosed herein can comprise first and second legs that are connected at their proximal ends by a connector. The connector can locate in the passage in use. Each leg can comprise a formation at its distal end that, in use, is able to be located at the aperture to mount the apparatus to the post.

In accordance with the present disclosure, the first leg can extend at a first angle with respect to the connector and the second leg can extend at a second angle with respect to the connector.

For example, when the apparatus is viewed in profile, the first leg can extend up and away at a first angle with respect to the connector. The second leg can also extend up and away at a second angle with respect to the connector. The second angle can be less than the first angle.

The angling up and away of each of the first and second legs with respect to the connector can define a “kink” at (i.e. angling of) the connector at this end of the apparatus, which kink can enable the connector to better function as a gate, latch or catch at the passage. The angling of the connector can, in this regard, make it harder for a strand that is located in the passage to bounce out of the passage in use, as compared to the “straight” connectors that are employed in the prior art. This kink (angling) will be described in further detail hereafter.

The difference in angling (second angle less than the first) can better allow the apparatus to be mounted to a flange of the post (e.g. on site and using e.g. a tool or gun). For example, it can allow for the second leg to first be mounted to the flange at one side thereof and, thereafter, can allow for the first leg to be urged into (e.g. compressed towards) a location for mounting to the flange at the other side thereof.

The difference in angling can also assist with locating of the first and second legs on opposite sides of the flange whilst, at the same time, allowing for the distal formations to be located at (and e.g. be pushed into) opposite sides of the aperture.

The difference in angling can further assist in providing a clearance of the first leg from the second leg during mounting to the flange (i.e. the distal formation at the first leg can remain clear of the distal formation at the second leg when the latter is first located at the aperture).

The kink (i.e. angling) can contribute to the spring loading (i.e. increase the spring force) of the apparatus, for a given size of passage, as compared to the straight connectors of the prior art. In this regard, the resultant orientation of the legs once mounted, the spring force that arises from their being compressed, and the “pushed-forward” angling of the connector, can all serve to promote the spring action of the connector as a gate, latch or catch within the passage, and to ensure that the passage is positively closed. The straight connectors of the prior art inherently have less spring action to maintain closed the passage.

Furthermore, when a strand (e.g. of fence wire) is located and retained in the passage, and when the strand sits or is moved near to an opening to the passage in use, the kink (i.e. angling) at the connector end can allow the strand to abut, push or slide against, and thereby urge, the connector increasingly harder against, an inside edge of the passage that is located adjacent to its opening, thereby maintaining the passage closed, and better retaining the strand therein. As mentioned above, this can make it harder for the strand to bounce out of the passage in use.

The kink (i.e. angling) can also help in directing and locating of the strand behind the connector. In this regard, during strand locating in the passage, the strand only needs to be moved past the point at which the connector touches the passage inside edge.

The apparatus can mount securely to a post, due to it being in a “compression mode” when mounted (i.e. as a result of reactive forces being set up within the apparatus when the first leg is urged (compressed) into its mounting location). This secure mounting can assist in the apparatus retaining wire strands or mesh at the post, such as when the wire strands or mesh are subjected to a sudden force or loading (e.g. in agricultural fencing applications).

The apparatus may be manually mounted to the flange, or a tool/gun may be used. The apparatus may be mounted by a skilled or unskilled user, such as a farmer, contractor, labourer, etc.

The apparatus may be mounted to a post on site, e.g. with the post already in situ (i.e. in the ground). This mounting on site can also provide greater flexibility to the user, allowing the user to secure the apparatus at just certain of the one or more passages, rather than requiring a post to be supplied with multiple such apparatus already pre-installed at every such passage.

The post may be of a type in which the flange projects out from, for example, a central longitudinal axis of the post. The post may have up to three (or more) elongate flanges that each project from the central longitudinal axis of the post, and may take the form of a Y- or T-post. The flange may comprise a stalk or stem of the Y- or T-post (although other flanges of the post may be employed). The stalk is generally the major (or larger) of the flanges in a Y- or T-post, hence usually the apparatus is mounted to the stalk. Further, the post may also take the form of a picket to be driven into the ground.

Each leg of the apparatus can comprise a laterally projecting formation at its distal end that is able to be passed through the aperture to locate at an opposite side of the flange. In this regard, the first leg lateral formation can be spaced further from the connector and can be angled differently to the second leg lateral formation to allow the legs to latch at spaced-apart (e.g. opposing) locations of the aperture, and to facilitate passage of the formations through the aperture without interference (i.e. without interfering with each other or with sides of the aperture).

At least the first lateral formation may also be angled with respect to the longitudinal extent of its respective leg (e.g. angled back towards the flange in use).

In any case, when the apparatus is compressed, this different angling can enable each formation to pass through the aperture to latch at the opposite side thereof (e.g. to latch at respective opposite sides). This can result in a more secure mounting of the apparatus to the post, and more secure retention of a strand.

For example, the distal extent of the first leg may be greater than the distal extent of the second leg. This can result in the distal formation on the first leg being spaced further away from the connector than the distal formation on the second leg. During mounting to the flange, this can prevent the distal formation on the first leg from colliding or interfering with the distal formation on the second leg, which may otherwise cause the first leg to be pushed wide of the aperture.

In this embodiment, and when the aperture in the flange is elongate, the greater distal extent of the first leg may cause its formation to interact with one (i.e. further) end of the elongate aperture, and the lesser distal extent of the second leg may cause its formation to interact with an opposite (i.e. closer) end of the elongate aperture.

In one embodiment, when the (or each) aperture is elongate, the formation at the distal end of one of the legs may locate at an in-use upper end of the aperture, and the formation at the distal end of the other of the legs may locate at an in-use lower end of the aperture.

When each leg comprises a laterally projecting formation at its distal end, the lateral formation of the second leg can be passed through the aperture from one side of the flange to locate and latch at an opposite side of the flange, and the lateral formation of the first leg can be passed through the aperture from the opposite side of the flange to locate at said one side of the flange. This latching on the opposite side of the flange can make it harder for the apparatus to be removed or dislodged in use.

In one embodiment, the connector may comprise a central region that is located distal to the first and second legs. A first portion of the connector may extend from the central region to the first leg. The first angle may be formed between the connector first portion and the first leg. A second portion of the connector may extend from the central region to the second leg. The second angle may be formed between the connector second portion and the second leg.

Furthermore, when the apparatus is viewed in profile, the connector second portion may extend at a third angle, out of a plane in which the connector first portion lies. This third angle exists in the apparatus prior to mounting. Then, when the first leg is being mounted to the flange, the connector first portion can effectively flex around the central region, such that the third angle is effectively eliminated, and the “kink” of the connector tends to becomes evenly formed around the central region.

In one embodiment, when the apparatus is viewed in plan, the connector first and second portions can combine to define a U-shape. The central region may generally be located at a base of the U-shape.

In this embodiment, one stem of the U-shape can form part of the connector first portion. The other stem of the U-shape can form part of the connector second portion. The one stem may be longer than the other stem in the U-shape. Again, this difference in length can result in the first distal formation being located further from the connector than the second distal formation. As mentioned above, the can assist with the mounting of the apparatus to the flange, in that it can prevent the distal formation on the first leg from colliding or interfering with the distal formation on the second leg during mounting, which may otherwise cause the first leg to be pushed wide of the aperture.

As set forth above, the formation at the distal end of each leg may project laterally. For example, it may take the form a hook (e.g. that is able to project through the aperture and hook onto the flange at an opposite side thereof). In this regard each hook may latch behind a respective opposing face of the flange to securely mount the apparatus thereto, making it harder for the apparatus to be removed or dislodged in use.

In an alternative embodiment, the formation at the distal end of each leg may comprise a projecting finger or latch that simply locates within the aperture in use.

In one embodiment, the formation defined at the distal end of the first leg may generally project in an opposite manner to the formation defined at the distal end of the second leg. This can facilitate the more secure mounting when, for example, the first and second legs are located on opposite sides of the flange.

In one embodiment, the different angling of the first and second lateral formations may result in the formation defined at the distal end of the first leg generally projecting in a skewed manner compared to the formation defined at the distal end of the second leg. As set forth above, this skewed angling can help with the passage of the first leg formation through the aperture (e.g. such as after locating of the second leg formation at the aperture).

As set forth above, typically the apparatus is mounted to an aperture in the flange that is elongate. For example, each of the apertures in the flange of the post may have an elongate configuration. Further, an elongate axis of the (or each) aperture may be parallel to a central longitudinal axis of the post.

The elongate configuration of the aperture may take the form of an obround, an elongate (e.g. rectangular) slot, an ellipse, an oval, etc. Alternatively, the aperture may be L- or V-shaped (e.g. a “right angle” shaped aperture). In this latter case, the L- or V-shaped aperture may be elongate around the right angle.

When the aperture is L- or V-shaped, the formation at the distal end of the first leg may be replaced with a lateral, sideways projection (i.e. that extends tangentially or transversely to a long axis of the apparatus and generally in line with a plane of the flange in use). In use, this sideways projection can interact with (i.e. can be passed through) a transverse portion of the L- or V-shaped aperture. Having passed therethrough, the sideways projection can then hook behind so as to locate at the opposite slide of the flange. The basic function and method of mounting is comparable to a hook or similar, but the extent of interference of this sideways projection compared to a hook may be much greater (e.g. it may sit flat/flush against a face of the flange). In addition, installation of the apparatus may be easier because the transverse portion of the L- or V-shaped aperture may provide for greater clearance than a slot-like aperture. This greater clearance may better allow for automated or semi-automated installation of the apparatus at the post (e.g. using a mounting gun or tool).

In one embodiment, each of the apparatus and aperture may be configured such that, when the first and second distal formations are each located in the aperture to mount the apparatus to the post, the first and second legs tend to bias apart from each other. As set forth above, the urging of the first leg towards the second leg during mounting to the flange compresses the apparatus, and sets up reactive forces and tension within the apparatus, whereby the tendency of the legs to then bias apart can cause the connector to be urged towards the edge of the passage (i.e. so as to close the entrance to the passage).

In this regard, the difference in angling of the first and second legs with respect to the connector can cause the first distal formation to interact with one side edge of the aperture, and can cause the second distal formation to interact with an opposing other side edge of the aperture. The difference in angling, in combination with the reactive forces within the apparatus when mounted, can then cause the connector to be urged or biased towards (i.e. so as to close) an entrance to the passage.

In one embodiment, the passage may comprise an entrance portion that extends generally laterally into the flange from its distal edge (although it may slope slightly down or up). The passage may further comprise a retention portion that extends generally laterally from the entrance portion (e.g. it may extend generally down or up within the flange, respectively). This extension of the retention portion generally down or up within the flange can define, adjacent thereto, a discrete section of the flange distal edge. As a result, the (or each) passage may generally have an L-shape.

In one embodiment, an inside edge of the discrete section of the flange distal edge can comprise a step formation therein. This step formation can be configured and located such that the connector of the apparatus may locate at the step when mounted to the post. This can further help with retention of a strand in the passage in use.

In this embodiment, the tendency of the legs to bias apart may cause the connector to be urged towards an edge of the passage retention portion, i.e. being that edge which is defined by an inner edge of said discrete section of flange.

In one embodiment, in use of the post, and when the passage is arranged in the flange above the aperture, the retention portion may extend from the entrance portion up into the flange, and the discrete section of the flange distal edge may extend down to the entrance portion of the passage. In another embodiment, when the passage is arranged in the flange below the aperture, the retention portion may extend from the entrance portion down into the flange, and the discrete section of the flange distal edge may extend up to the entrance portion of the passage.

In the first case, when the aperture is elongate, the formation at the distal end of the second leg may locate at an in-use upper end of the aperture, and the formation at the distal end of the first leg may locate at an in-use lower end of the aperture. In the second case, when the aperture is elongate, the formation at the distal end of the second leg may locate at an in-use lower end of the aperture, and the formation at the distal end of the first leg may locate at an in-use upper end of the aperture.

In one embodiment, the elongate flange of the post to which the apparatus is mounted can define an upper end edge, and the flange distal edge can generally extend for a length of the flange. In this embodiment, a portion of the upper end of the flange may be removed such that the upper end edge terminates at a location that is inset with respect to the distal edge, and such that the flange distal edge terminates at a location that, in use, is lower than the upper end edge of the flange. Thus, this portion is removed at a corner of the flange.

This has the effect of “lowering” the flange distal edge relative to the flange upper end edge. This can help to prevent deformation, distortion, bending, etc occurring at the distal edge during installation of the post. In this regard, when the post is driven into the ground, such as by an automatic or manual fence post driver, or by being manually hammered into the ground, the driver/hammer/tool will preferentially engage the flange upper end edge rather than the flange distal edge, thus helping to prevent deformation, distortion, bending, etc of the latter.

In one embodiment, the removed portion may be defined by an in-use upwardly facing slot that extends into the flange from the upper end edge, adjacent to its distal edge. Such a slot may define adjacent thereto a discrete section of the flange distal edge. The discrete section of the flange distal edge may then terminate at a location that, in use, is lower than the upper end edge of the flange.

However, should such a discrete section be contacted during e.g. post installation it can bend or fold, but because it is a discrete section, it can bend/fold without impacting or interfering with a remainder of the flange. For example, it can bend/fold without on-transferring force down through the flange distal edge, which would otherwise crush or reduce the clearance in the passage(s) and aperture(s) located further down the flange. By avoiding this crushing or closing, a strand, etc (such as a fence wire) is still able to be passed through the passage(s)/aperture(s) e.g. so that the strand, etc can still be retained by the apparatus.

In another embodiment, the removed portion may be defined by a cut-away region of the flange. The cut-away region may be defined by a bevelled edge that extends from the inset location of the upper end edge to that location of the distal edge that is lower than the upper end edge.

In one embodiment, the apparatus when mounted to the post may be configured to retain a strand in the passage. The strand may, for example, comprise fencing wire or form part of a fencing mesh. In such case, the post may comprise a fence post. Hence, a principal (though by no means exclusive) application of the apparatus may be in fencing, such as is employed in agriculture. However, the strand may take the form of rod, bar, tape, cord, or another elongate strand-like element.

In one embodiment, in use of the apparatus when mounted to the post, the strand may first be moved past the connector when the latter is located in the passage. As it moves therepast, the strand may thereby be retained in the passage behind the connector (e.g. in the passage retention portion).

In one embodiment, in use of the apparatus when it is mounted to the post, the strand may first be moved into the entrance portion, then past the connector to deflect the latter into the retention portion, such that the strand may become retained in the retention portion behind the connector, with the latter deflecting back to close the entrance portion. The apparatus can thereby function as a deflectable latch or catch.

In one embodiment, the apparatus may comprise wire or rod of high carbon steel (e.g. spring steel) that is configured to form the legs and connector, such as a unitary piece. The apparatus may optionally have a non-ferrous metallic coating, such as a galvanised coating. The apparatus may additionally, or alternatively, comprise a pigmented (e.g. polymer) coating for further corrosion protection and/or for aesthetics. The pigmented coating may comprise an organic pigmentation or dye.

Also disclosed herein is a post that comprises an elongate flange that defines an upper end edge and that has an elongate distal edge that generally extends for a length of the flange. In the post as disclosed herein, a portion of the upper end of the flange can be removed such that the upper end edge terminates at a location that is inset with respect to the distal edge, and such that the distal edge terminates at a location that, in use, is lower than the upper end edge of the flange.

As set forth above, this has the effect of “lowering” the flange distal edge relative to the flange upper end edge such that, during installation of the post, this helps to prevent deformation, distortion, bending, etc occurring at the distal edge, or force transfer that would otherwise result in closure, etc of passage(s)/aperture(s) lower down the flange.

In one embodiment of the post, the removed portion may be defined by an inuse upwardly facing slot that is defined to extend into the flange from the upper end edge, adjacent to its distal edge. Such a slot may define adjacent thereto a discrete section of the flange distal edge. The discrete section of the flange distal edge can terminate at the location that, in use, is lower than the upper end edge of the flange.

In another embodiment of the post, the removed portion may be defined by a cut-away region of flange. The cut-away region may be defined by a bevelled edge that extends from the inset location of the upper end edge to that location of the distal edge that is lower than the upper end edge.

The post as set forth above can be configured for use with an apparatus as set forth above.

Also disclosed herein is a post that is configured for use with an apparatus as set forth above. As above, the post comprises an elongate flange having at least one aperture through the flange and, spaced from the aperture, having at least one passage that extends into the flange from a distal edge thereof.

The passage comprises an entrance portion that extends laterally into the flange from the distal edge. The entrance portion allows both a connector part of the apparatus as well as a strand (e.g. wire) to be moved into the passage. The passage also comprises a retention portion that extends from the entrance portion in an axial direction of the flange. The retention portion is able to retain therein a strand that has been moved axially into the retention portion of the passage.

The retention portion is configured to have first and second opposing sides that extend to a closed end. The first side is located laterally further from the distal edge of the flange than the second side.

In accordance with the disclosure, the first side extends from each of the entrance portion and closed end to an intermediate location of the first side that is spaced furthest from the distal edge. This can provide sufficient clearance to the movement of a strand (e.g. wire) into (i.e. to be retained in) the retention portion, i.e. the strand is moved axially towards the closed end of the retention portion. In this regard, in use of the apparatus on the post and when the strand is moved past so as to deflect the apparatus, by providing an intermediate location spaced furthest from the distal edge can allow the connector part of the apparatus to be displaced towards this location (i.e. laterally further from the distal edge of the flange than would otherwise be possible with those passage configurations as set forth in the prior art).

In one embodiment, the first side may curve inwardly of the flange to this location. For example, the curve of the first side may be defined by a radius that extends from a point located on a perpendicular line taken from a midpoint of the axial length of the retention portion. The perpendicular line may intersect with the location. In this regard, the first side curve may generally be symmetric about this perpendicular line.

In one embodiment, at least part of the second side of the retention portion extends in an axial direction of the flange. This part of the second side may extend from the entrance portion. This part of the second side can provide a bearing or resting surface, i.e. against which the connector part of the apparatus can locate when in a strand retention (“latching”) mode.

In one embodiment, the second side of the passage retention portion may comprise a step formation therein. The step formation may be configured such that the connector of the apparatus can locate adjacent to the step formation in use (e.g. during the strand “latching” mode). The step formation may be defined to step inwardly of the flange at an end of the part of second side (i.e. the end that is opposite to the entrance portion). The step formation can work together with the connector part of the apparatus to better retain the strand in the passage retention portion (i.e. in the “latching” mode the connector can be biased to sit in adjacent to the step to make it difficult to move the strand past the apparatus).

In accordance with the disclosure, the first side may curve sufficiently inwards of the flange such that sufficient clearance is provided to enable the strand to also move past the step formation and towards the closed end of the passage retention portion.

In one embodiment, the first side may have a radius of curvature that approximates the extent of an arc of swing as moved along by the connector of the apparatus when in use in the passage retention portion. The expression “extent of an arc of swing” is intended to indicate the length of an arc extending between the first and second sides of the retention portion, being an arc along which the connector ideally moves in use (i.e. maximum swing arc in the slot).

In one embodiment, the first side may curve inwardly of the flange from one side of the entrance portion, and may then curve back to the closed end of the retention portion. This provides a shape to the retention portion whereby the amount of flange material (e.g. steel) that is removed during formation (e.g. during punching/cutting) of the retention portion is minimised (i.e. more material is retained at the opposite ends of the retention portion). This can help to preserve some strength in the flange.

In one embodiment, the closed end of the retention portion may be curved. The closed end curve may continue on from the first side curve. Again, this provides a shape to the closed end whereby the amount of flange material (e.g. steel) that is removed during its formation is minimised. This can again help to preserve some strength in the flange.

In one embodiment, the retention portion may be axially aligned with its corresponding aperture in the flange. This arrangement can help to determine the arc of swing of the apparatus in use (i.e. the way in which the connector swings back-and-forth between the first and second sides in the passage retention portion).

In one embodiment, when the post is arranged generally vertically in use, the entrance portion can extend generally horizontally, and the retention portion can extend generally vertically. The passage retention portion may also extend (i.e. point axially) away from its corresponding aperture.

Also disclosed herein is a post mounting system. The system can comprise the apparatus as set forth above. The system can also comprise a post, such as that set forth above. The post can in turn comprise an elongate flange. As above, the flange can have at least one aperture through the flange and, spaced from the aperture, can have at least one passage that extends into the flange from a distal edge thereof.

In one embodiment, the aperture and passage may be as set forth above.

In one embodiment, the system may be employed to retain a strand at the post (i.e. in the passage), as set forth above.

Also disclosed herein is a method for mounting the apparatus as set forth above to a post. As above, the post can comprise an elongate flange that has at least one aperture through the flange. Spaced from the aperture, the post can also have at least one passage that extends into the flange from a distal edge thereof.

The method as disclosed herein comprises locating the formation at the distal end of the second leg in the aperture and locating the connector in the passage. This can happen simultaneously, or the connector can be located in the passage and the second leg distal end formation can then be located at the aperture.

The method as disclosed herein also comprises urging the first leg to deflect it so as to enable the formation at the distal end of the first leg to be located at the aperture.

Such a method can be deployed manually, or using a tool/gun, and on site. The method can also securely mount the apparatus to the post. In this regard, the apparatus, once mounted, can be employed to retain a strand at the post. The method and apparatus can also be deployed simply and easy by a user, reducing the need for skilled labour, and can further provide a simple means for retaining strands at a post.

In one embodiment of the method, the formation at the distal end of each of the first and second legs may comprise a hook. Thus, the locating of each formation of each leg in the aperture may comprise passing the second leg hook into the aperture from one side of the flange to hook to an opposite side of the flange. It may then comprise urging the first leg to deflect it so as to enable the first leg hook to be located at the aperture at the opposite side of the flange. Then it may comprise deflecting the first leg hook through the aperture and so as to hook to said one side of the flange.

In one embodiment, the method may further comprise a step of retaining a strand in the passage behind the connector.

In one embodiment of the method, the strand may first be moved into an entrance portion of the passage. The strand may then be moved past the connector to deflect the latter into a retention portion of the passage. The strand may thereby become retained in the passage retention portion behind the connector. The connector may deflect back to close the entrance portion.

The post employed in the system and method may comprise a series of discrete, spaced apertures and alternating passages of the same or differing configurations. For example, whilst the apparatus is optimised towards use with elongate apertures, some apertures may be circular. The particular use of the apparatus with an elongate (e.g. obround, V- or L-) aperture can better allow the respective distal end formations (e.g. hooks, lateral projections) of each leg to be more easily inserted through the aperture from opposing flange sides, and to be retained at the aperture, especially with respect to a comparative post utilising known circular holes. The use of the apparatus with an elongate aperture can also better ensure that it is securely mounted to the post.

The post employed in the system and method may be of metal such as steel, aluminium etc, or may comprise a plastic. For example, whilst usually the entire post is formed from a single such material, the apparatus and device may comprise one or a combination of materials (e.g. a metal and a plastic).

In a usual mode the post may be roll-formed or hot-rolled from a relatively nondeformable metal such as mild steel, and may optionally be galvanised or otherwise coated. The apertures and passages may be punched, machined, cut, stamped, pressed or otherwise formed in the flange, usually after the post profde is formed.

BRIEF DESCRIPTION OF THE DRAWINGS

Notwithstanding any other forms which may fall within the scope of the apparatus, system and method as defined in the Summary, specific embodiments will now be described, by way of example only, with reference to the accompanying drawings in which:

Figures 1A to IE respectively show plan, perspective, end, side (profile), and alternate perspective views of a first apparatus embodiment;

Figures 2A to 2D respectively show side, front, reverse side and perspective views of the apparatus embodiment of Figure 1 when mounted to a flange of a post, a detail of the post being shown;

Figures 3 shows an alternative perspective view to that of Figure 2D

Figure 4 shows a side schematic detail of a second apparatus and post embodiment;

Figures 5A to 5C schematically depict the sequence of steps in the mounting of the first apparatus embodiment to the flange of a post;

Figure 6 schematically depicts the first apparatus embodiment in use on a post that is, in effect, inverted when compared to the post of Figures 2 & 3, the post shown as supporting a strand of wire therein;

Figure 7 schematically depicts a perspective view of a post embodiment that has an asymmetric slot defined in an upper end edge thereof, and a passage that comprises a step formation therein;

Figure 8 schematically depicts a perspective view of another post embodiment that has a bevelled edge defined at an upper end edge thereof;

Figures 9A and 9B depict side and end views of another post embodiment that has a number of asymmetric passages and associated apertures defined along a distal edge thereof;

Figures 9C and 9D each depict a detail view of one of the asymmetric passages, with Figure 9C depicting an associated aperture;

Figures 10A to IOC depict detail views similar to Figure 9C, but with an apparatus embodiment according to Figure 1 mounted to the post, the apparatus variously being displaced by a strand.

DETAILED DESCRIPTION OF SPECIFIC EMBODIMENTS

Various embodiments of an apparatus, system and method that enable, for example, a strand to be retained at a post will now be described with reference to Figures 1 to 8. The apparatus, system and method will be described in relation to the retention of wire strands at a fence post such as employed in agriculture. As mentioned above, it should be understood that the apparatus, system and method are not limited to fencing-related applications, nor are they limited to wire strands. For example, the strand may take the form of rod, bar, or another elongate strand-like element (e.g. tape, cord, etc).

Referring firstly to Figures 1-3,5 and 6, a first apparatus and system embodiment will be described. The apparatus takes the form of a latch clip 10 for retaining a strand S at a post 100 (see Figure 6). The clip 10 can be formed of wire or rod that is appropriately bent into shape (e.g. to be formed as a unitary piece). Such wire or rod may be formed of high carbon (e.g. spring) steel. Additionally, or alternatively, the clip 10 may be stress relief heat treated to improve retention of its shape.

The clip 10 may comprise an insulating material, but is typically of metal and is optionally coated for corrosion protection and/or for aesthetics (e.g. with a non-ferrous metallic coating such as galvanising, a polymer-coating, etc). The polymer coating may comprise a pigment such as an organic pigmentation or dye.

The system includes the clip 10 and a post 100 that comprises an elongate flange 102. The post 100 may be a Y- or T-post, taking the form of a picket, although the flange may form part of other post types, including rails, cross-members, struts, stays, channels, sections, etc.

The flange 102 as shown projects out from a central longitudinal axis Ax of the post 100 and can define a stalk or stem of the Y- or T-post, although other flanges of the post may be modified to employ the clip 10.

The flange 102 of post 100 has one, although typically a number of, apertures in the form of elongate holes 104 therethrough and spaced out along a length of the flange. In addition, at a location spaced from the hole 104, the flange has one, but typically a number of, corresponding passages in the form of slots 106 that each extend into the flange from its distal edge 110. The holes and slots are punched, machined, cut, stamped, pressed or otherwise formed in the flange, usually in a separate step after the post profile has been formed.

The post of Figures 2 & 3 is shown with an orientation of the flange 102 in which the hole 104 is located above the slot 106, and in which the slot 106 effectively points down. The configuration in the flange 102 of the post of Figure 6 is, in effect, inverted, in that the hole 104 is located below the slot 106, and in which the slot 106 effectively points up. The clip 10 functions with either orientation.

In the embodiment of Figures 1-3, 5 & 6, each hole 104 is elongate. The particular form of the hole 104 in Figures 1-3, 5 & 6 is an obround (i.e. consisting of two semicircles connected by parallel lines that are tangent to their endpoints). This shape has been found to reduce the amount of bending stress induced in the flange 102 in use. In other embodiments, the elongate hole may be rectangular, elliptical, oval, etc. The hole may have another configuration but that still enables two “hooks” of the clip to be passed therethrough, as described in greater detail below.

In this regard, Figure 4 shows an alternative embodiment of a flange 202 for a post 200. In Figure 4, a hole 204 is effectively L- or V-shaped, depending on the post orientation (i.e. a “right angle” shaped aperture). Here, the hole 204 can be seen as being “elongate” around the right angle. In the embodiment of Figure 4, the hole 204 is located above the slot 206, but can be located below the slot 206, and in which case the orientation of hole 204 would be inverted. In the embodiment of Figure 4, the hole 204 is optimised towards use with a modified clip 10’, which will be described in greater detail below. The modified clip 10’ also functions with either orientation (hole 204 above or below).

Insofar as the design and use of the clip 10 is concerned, each clip 10 functions with one hole 104 and one adjacent and corresponding slot 106. As best shown in Figure 2C, the slot 106 comprises a strand retention part 112 which, in the embodiment of Figure 2C points down (or points up in the arrangement of Figure 6). The slot 106 also comprises a generally laterally extending (slightly sloped) strand entrance part 114 through which the wire strand S can be passed to enter (and be retained in) the retention part 112.

The combined retention and entrance parts 112, 114 give the slot a general L-shape (Figures 5 & 6) or an inverted L-shape (Figures 2 & 3). The retention part 112 also defines a discrete section 115 of the adjacent flange distal edge 110. An inside edge 116 of the discrete section 115 is able to interact with the clip 10, as described below.

Referring specifically to Figure 1, the clip 10 comprises a first leg 12 and a second leg 14. The legs are connected at their proximal ends by a connector in the form of a U-shaped joint 16. The joint 16 can locate in the slot 106 in use (see Figures 2, 3, 5C & 6), generally at the intersection of the retention and entrance parts 112, 114.

When the joint 16 is located in the slot 106, it can function as a latch or catch to retain one (or more than one) wire strand at the post 100 (i.e. in the retention part 112).

The distal ends of the legs 12, 14 of clip 10 comprise respective formations in the form of hooks 18, 20. The hook 18 generally projects from its leg 12 in an opposite direction to hook 20 projecting from its leg 14. In use, the hooks 18, 20 are able to be located at, to hook into from opposite sides thereof, the hole 104 to mount the clip 10 to the post 100 (see Figures 2, 3, 5C & 6). In doing so, each hook 18, 20 latches behind a respective opposing face of the flange 102 to securely mount the clip thereat.

The hooks 18, 20 are also able to locate at opposite ends of the hole 104, as will be described in more detail below. At least one of the hooks (e.g. 18) may be replaced with a projecting finger/latch as described below with reference to Figure 4.

Also, it will be seen that an end 19 of hook 18, as well as hook 18, are skewangled in comparison to an end 21 of hook 20. More specifically, and as best shown in Figures ID & IE, at a bend 23 the hook 18 angles down with respect to the longitudinal axis of the first leg 12, and the end 19 deflects up with respect to a remainder of the hook 18. Further, as best shown in Figure 1A, the end 19 projects back at an angle of about 15° with respect to the first leg longitudinal axis. In addition, the end 21 deflects down with respect to a remainder of the hook 20.

The combined effect of these different angles helps in the latching of each hook to the flange 102, as explained below. Also, to improve the securement of the clip 10 to flange 102, the angling of the hooks is maximised to the extent that is permitted by the side-to-side width of the hole 104. This in turn helps to maximise the extent of overlap of the end 19, 21 of each hook 18, 20 respectively with the side of the flange adjacent thereto in use.

As best shown in Figure ID (i.e. clip 10 viewed from the side, in profile), the first leg 12 extends at a first angle A with respect to the U-shaped joint 16. Angle A as shown is around 23°-24°. The second leg 14 extends at a second angle B with respect to the U-shaped joint 16. Angle B as shown is around 10°. Thus, the second angle B is less than the first angle A. This difference in angles of extent of each of the first and second legs with respect to the U-shaped joint 16 allows the clip 10 to be simply and easily mounted to the post 100.

Referring specifically to Figure 1A (i.e. clip 10 viewed in plan), the U-shaped joint 16 comprises a central region 22 that is located distal to the hooks 18, 20 of the first and second legs 12, 14. A first portion 24 of the U-shaped joint 16 extends from the central region 22 to a region (i.e. bend) 25, where it connects to the first leg 12. The first angle A is formed between the first portion 24 and the first leg 12. A second portion 26 of the U-shaped joint 16 extends from the central region 22 to a region (i.e. bend) 27, where it connects the second leg 14. The second angle B is formed between the second portion 26 and the second leg 14. The first and second portions 24, 26 thus combine to define the U-shape of joint 16, with the central region 22 being centrally located at a base of the U-shape.

Figures 1A & IB depict a respective straight part 24A and 26A of each of the first and second portions 24, 26. The straight parts 24A and 26A define, in effect, a respective stem of the U-shape. It will be seen in Figure 1A that the straight part 24A is longer than the straight part 26A. This difference in length aids the mounting of the clip 10 to the flange 102, as it allows the hook 18 to locate distally to a greater extent from joint 16 than the hook 20. Thus, when the clip 10 is compressed (e.g. manually or by a tool), the hook 20 does not interfere with the hook 18.

Also, this difference in distal extent enables hook 18 to locate in and hook to one end of the hole 104, and hook 20 to locate in and hook to an opposite end of the hole 104 (see Figures 2, 3, 5 and 6). For example, in the embodiment of Figures 2 & 3, the hook 20 of the second leg 14 can first be located at an in-use lower end of the hole 104, and the hook 18 of the first leg 12 can then be located at an in-use upper end of the hole 104 (whereas the opposite applies for the embodiment of Figures 6).

Referring specifically to Figure ID (i.e. clip 10 viewed from the side, in profile), it will be seen that the second portion 26 extends at a third angle C, which is out of a plane in which the first portion 24 lies. This angling between the first and second portions 24, 26 is employed so that, when the clip 10 is compressed (i.e. to manoeuvre the hook 18 of the first leg 12 into the hole 104), the first portion 24 effectively bends/flexes around the central region 22, so as to move, in effect, into the same plane as the second portion 26. As a result, a “kink” is defined at the joint end of the clip (see e.g. Figures 2A & 2C). The kink is an angling of the U-shaped joint 16 with respect to each of the legs 12, 14, the function and advantages of which are explained below.

Once the clip is mounted to the post, the kink, in effect, becomes even on either side of the central region 22, as also explained below.

With the first angle A, being larger than the second angle B, a clearance is provided between the first leg 12 and the second leg 14, as well between the hook 18 and the hook 20 (see Figure IB, D & E). This clearance enables the second leg 14 of the clip to first be located and hooked via hook 20 to one side of the flange 102 (i.e. with the skewed end 21 latching onto the flange 102). The clearance means that the first leg 12 and hook 18 do not interfere with such mounting (see Figure 5A). The clearance then enables the first leg 12 to be compressed (i.e. legs urged together - see Figures 5B), so as to locate the leg 12 and the hook 18 at the opposite side of the flange 102.

The hook 18 can then be deflected into the hole 104, and then released, such that the skewed end 19 is able to latch onto the flange 102. Thus, during mounting (as well as during dismounting), the difference in angles A and B provides a clearance that prevents the first leg 12 from colliding or interfering with the second leg 14, which would otherwise cause the first leg 12 to be pushed wide of the hole 104.

When mounted to the flange 102, the clip 10 assumes a “compression mode”. In this regard, the compression of the clip to enable the hooks 18, 20 to each be hooked into the hole 104, together with the different angling of the legs 12, 14 with respect to the joint 16, sets up a reactive, biasing apart force in the legs. With the joint 16 having been located in the slot 106, this biasing apart of the legs urges (i.e. biases) the joint 16 towards, so as to interact with (e.g. abut), the inside edge 116 of the slot 106 at the discrete section 115. Thus, the clip 10 is able to functions as a kind of gate, latch or catch for retaining e.g. a wire strand in slot 106.

The “compression mode”, and the resultant reactive forces in the clip, also help to better secure the clip 10 to the flange 102, and help it to resist dislodgement when e.g. excess force is applied to a given strand that is retained by the clip. Hence, the clip 10 can find particular application in fencing to retain fence wire strands or mesh at the post 100 (e.g. when the fence is used to contain livestock).

The kink that is defined at the joint end of the clip by the angling of the legs 12, 14 functions to provide a more pronounced gate, latch or catch (see Figures 2A, 2C, 2D and Figure 6), to better retain e.g. a strand of wire in the retention portion 112 of the slot 106.

In this regard, and as best illustrated in Figure 6, the strand S (e.g. of fence wire) is located and retained in the retention part 112 of the slot 106 by the joint 16. When the strand S sits or is urged near to the entrance part 114 of the slot 106 (e.g. by its own weight or by a force applied to the strand, such as by livestock, etc), the kink of joint 16 allows the strand to run along and also push against the kink, thereby urging the joint 16 increasingly harder against the inside edge 116 of the slot 106. Because the joint 16 sits adjacent to the entrance part 114, it closes the slot 106 at the entrance part 114, thereby securely retaining the strand S in the retention part 112.

The kink of the clip 10 also helps with the directing of the strand S behind the joint 16 when locating the strand S in the slot 106. In this regard, once the strand has been moved past the kink of joint 16, the kink provides for a larger extent/distance of effective clearance for a strand to move into and be retained in the retention part 112.

Thus, the kink serves to differentiate the clip from prior art non-kinked clips, or even compared to a clip which may angle back to a “lower” or “inside” edge of the slot 106. The prior art non-kinked clips tend to abut/interfere with a back part of a slot much earlier during wire insertion, resulting in less spring action to re-close the slot. The kink can thus mitigate or eliminate abutment and interference of the joint 16 with a rear edge of the retention part 112 of slot 106 during both strand insertion and retention.

The “forward bias” of the clip when mounted to flange 102, arising from its “compression mode” and the angling of legs 12, 14, allows for the kink of the joint 16 to be maintained in a “pushed forward” orientation, thereby causing the clip 10 to effectively act as a “spring” latch/catch. This helps to ensure that the slot 106 is always positively closed (i.e. the strand is always positively captured).

The clip 10 can be manually (e.g. finger) mounted as shown in Figure 5. The clip 10 can also be mounted using a purpose-built or modified tool/gun. The clip 10 can be mounted by a farmer, contractor, unskilled labourer, etc with the post 100 already located in situ (i.e. already in the ground). This mounting on site can also provide greater flexibility and discretion to the user, such as by allowing the user to secure one or more clips at just certain of the one or more slots 106, i.e. rather than supplying a post with multiple clips already pre-installed (e.g. at a factory) at every slot.

Turning now to the embodiment of Figure 4, the modified clip 10’ is designed for use with the F- or V-shaped (right angle) hole 204 of the flange 202. The modified clip 10’ is, for the most part, essentially of the same design as clip 10, hence the common features of the modified clip 10’ (legs, lengths and angles, differential extent, joint kink, etc) will not be re-described.

In the modified clip 10’, the hook 18 of the first leg 212 is replaced with a lateral projection in the form of a finger 218 that projects laterally from the first leg 212. The finger 218 can, in Figure 4, be seen as extending tangentially or transversely to an elongate vertical axis X of the clip 10’. In use, when mounting the clip to flange 202, the finger 218 is also able to lie in a plane of the flange 202. The finger 218 is able to be passed through an in-use transverse portion 205 of the F- or V-shaped hole 204.

The second leg 214 of the clip 10’ comprises a hook 220 that is similar to the hook 20. The hook 220 is able to hook at a lower end of an in-use vertical portion 207 of the L- or V-shaped hole 204.

In use, the second leg 214 is first located at the depicted side of the flange 202, and the hook 220 of the second leg 214 is hooked in place at the lower end of vertical portion 207. The joint 216 is located in the slot 206 in a similar manner to joint 16 being located in slot 106, the joint being biased against inside edge 230. The first leg 212 is located at the opposite side of the flange 202, and is compressed, so that the finger 218 is able to align with and then be passed (i.e. pushed) back through the transverse portion 205 of the L- or V-shaped hole 204. Having passed through portion 205, the first leg 212 is released, so that the finger is now able to hook behind (i.e. to be located at the depicted side of) the flange 202, adjacent to its distal edge 210.

The function and method of mounting of modified clip 10’ is comparable to the clip 10, however, the extent of interference of the finger 218 with the flange 202 is greater when compared to the hook 20. In addition, installation of the finger 218 through the transverse portion 205 of the L- or V-shaped hole 204 may be easier, because a greater hole clearance is provided. This greater clearance may also allow for easier automation or semi-automation of clip installation at the flange (e.g. using a mounting gun or tool).

Referring now to Figure 7, another post embodiment will now be described. The post in this embodiment takes the form of a post 300. As previously described, the post 300 can have the latch clip 10 or 10’ mounted thereto, each clip for retaining a respective strand S at the post.

The post 300 is a Y-post, but may be a T-post, and may take the form of a picket, etc. The post 300 has a flange 302 that projects out from a central longitudinal axis Ax of the post. Again, the flange 302 defines a stalk or stem of the Y-post.

Figure 7 depicts just the upper end of the post 300, with flange 302 having an aperture in the form of an elongate hole 304, and a passage in the form of a slot 306 (though typically a number of such holes and slots are spaced out along a length of the flange). In the post 300, the hole 304 is located below the slot 306, and the slot 306 effectively points up. As above, the holes and slots are punched, machined, cut, stamped, pressed or otherwise formed in the flange, usually in a separate step after the post profile has been formed.

The slot 306 of post 300 has an entrance part 314 and a retention part 312 that combine to give the slot a general L-shape. The retention part 312 defines a discrete section 315 of the adjacent flange distal edge 310. An inside edge 316 of discrete section 315 is able to interact with the clip 10, 10’. The inside edge 316 of the discrete section 315 comprises a step formation 317 formed thereat. The step formation 317 is configured and located such that the U-shaped joint 16 of the clip 10, 10’ is able to locate into the step, to sit therein when the clip is mounted to the post 300. Thus, when mounted to the flange 302, whereby the clip 10, 10’ assumes its “compression mode”, the joint 16 is urged (i.e. biased) into the step formation 317. Thus, the clip 10, 10’ is better able to function as a gate/latch/catch for retaining e.g. a wire strand S in the slot 306 in use. A corner portion of the upper end of the flange 302 in post 300 is removed to define an upwardly facing hole 350 in an upper end edge 352 of the flange 302, adjacent to the distal edge 310. The hole 350 can have a semi-circular internal end 354 and can define adjacent thereto a further discrete section 356 of the flange distal edge. The hole 350 can be used to retain a strand of wire at the top of the post 300 in use. For example, the hole 350 can retain a strand of barbed wire. However, the hole 350 is formed (e.g. cut, machined, punched, etc) such that the flange discrete section 356 has a length (i.e. X mm) whereby it terminates at a location that, in use, is lower (e.g. by Y mm) than the upper end edge of the flange. X may range, for example, from 8-10 mm, and Y may range from 4-6 mm.

This “lowering” of the flange distal edge section 356 relative to the flange upper end edge 352 helps to protect the former, so as to prevent the deformation, distortion, bending, etc of the flange discrete section 356 during installation of the post. For example, when the post is driven into the ground by an automatic or manual fence post driver, or is manually hammered into the ground, the “lower” distal edge section 356 means that the driver/hammer/tool will preferentially engage the flange upper end edge 352 rather than the flange discrete section 356, thus protecting it and helping to prevent its deformation, distortion, bending, etc. This can especially be the case with e.g. tractor-mounted automatic (e.g. pneumatic) fence post drivers, which are positioned adjacent to one side of a post in use, and thus may not “squarely” strike the post upper end edge in use.

However, should the flange distal edge section 356 be contacted (e.g. impacted by the driver) during post installation, it can bend or fold. Because it is a discrete section of metal, it can bend or fold in a manner that does not impact or interfere with an underlying remainder of the flange 302. In this regard, the section 356 can bend/fold at its base, adjacent to the hole internal end 354, without on-transferring impact force down through the flange distal edge. Such a force would otherwise result in a crushing of (or at least a reduction in the clearance in) the entrance part 314 of slot 306. Such a force may also distort and e.g. close up the hole 304, such as when the elongate hole 304 is located above the slot 306. By avoiding this crushing or closing, a strand S such as a fence wire is still able to be passed in through the entrance part 314, to be retained by the latch clip 10, 10’.

Referring now to Figure 8, another post embodiment will now be described. The post in this embodiment is labelled as post 300’ because it is similar in many respects to the post 300 of Figure 7. Further, like reference numerals to Figure 7 are used to denote like or similar parts in Figure 8. As previously described, the post 300’ can have the latch clip 10 or 10’ mounted thereto, each clip for retaining a respective strand S at the post.

The post 300’ differs from the post 300 of Figure 7, in that it does not possess the upwardly facing hole 350 in the upper end edge 352 of flange 302. Instead, a comer portion of the upper end of the flange 302 in post 300’ is removed to define a cut-away region of the flange 302. This cut-away region defines a bevelled edge 360 that extends down at an angle from a location that is inset along the upper end edge 352 to a location along the distal edge that is lower than the upper end edge (e.g. by a distance Z, which may be 10-14 mm).

Again, this “lowering” of the flange distal edge 310 relative to the flange upper end edge 352 helps to protect the former during installation of the post, so as to prevent the deformation, distortion, bending, etc of the flange distal edge, and avoiding crushing or closing of the slot 306 and hole 304.

The use of the clip 10 or 10’ when mounted to the flange 102, 202 of a post 100, 200, 300, 300’ will now be described. A wire strand S is first passed into the entrance part 114 of slot 106 until it reaches and engages the biased joint 16, 216. The strand is then urged past the biased joint 16, 216, at the location where it meets with the inside edge 116, 230, 316 of the slot 106, 206, 306. This action causes the joint 16, 216 to deflect inwardly, to the extent of the thickness of the strand. Once the strand has moved past the joint 16, 216, the latter deflects back to the inside edge 116, 230,316. The strand S is now retained in the retention part 112, 312 of the slot 106, 306, behind the joint 16, 216.

Referring now to Figures 9 and 10 a further embodiment of a post is depicted. The post comprises asymmetric passages and associated elongate apertures, as will now be described.

The post in this embodiment takes the form of a post 400. As previously described, the post 400 can have one or more of the latch clips 10 or 10’ mounted thereto. Each such clip is able to retain a respective strand S at the post.

As best shown in Fig. 9B, the post 400 is a Y-post, but it may take the form of a T-post. The post 400 is also in the form of a picket having a pointed end 401, as shown in Fig. 9A. The post 400 has a flange 402 that projects out from a central longitudinal axis Ax of the post. The post 400 also has two other flanges - so-called “wings” 403. Again, the flange 402 defines a stalk or stem of the Y-post.

Figures 9C & 9D each depict a discrete section of the post 400. At this section, the flange 402 comprises an aperture in the form of an elongate hole 404, and a passage in the form of an asymmetric slot 406. The slot 406 extends into the flange 402 from its distal edge 410. Typically a number of such holes and slots are spaced out along a length of the flange, as shown in Figure 9A.

In use of the post 400, usually the elongate hole 404 is located above the slot 406, and the slot 406 effectively points down. However, a reverse configuration is employed for the lowermost pairing of hole 404’ and slot 406’, as shown in Figure 9A. This reverse configuration is provided for ease of locating a lowermost wire strand adjacent to the ground in use.

As set forth above, the holes and slots are punched, machined, cut, stamped, pressed or otherwise formed in the flange 402, usually in a separate step after the post profile has been formed.

As best shown in Figure 9D, the slot 406 of post 400 has an entrance part 414 and a retention part 412 that combine to give the slot 406 a shape that is much like the head of a golf club in appearance (albeit with a step 417 that is located adjacent to a “toe” of the golf club shape). The entrance part 414 extends laterally into the flange 402 from its distal edge 410. The entrance part 414 is sized to allow each of the U-shaped joint 16 of the clip 10 and a wire strand S to be moved into the retention part 412, to be retained therein in use of the post.

The retention part 412 extends from the entrance part 414 in an axial direction of the flange. In the embodiment of Figures 9 & 10, the retention part 412 extends in an axial direction to in use point downwards (or upwards) and to be generally parallel to the post central axis Ax in use. In use, the wire strand S is moved axially into the retention part 412.

In use, when the post extends generally vertically up from the ground, the entrance part 414 extends generally horizontally, and the retention part 412 extends generally vertically. To enable the latching function, the retention part 412 also points axially away from its corresponding elongate hole 404.

The retention part 412 is configured to have a first side 413 and a second opposing side 416. The first and second sides each extend to a semi-circular closed end 419 of the retention part 412. As shown in Figures 9C and 9D, the first side 413 is located laterally further from the flange distal edge 410 than the second side 416. The first side defines a location L that is intermediate to the entrance part 414 and the closed end 419 (e.g. location L can be midway along this first side). The location L is that part of the first side that is spaced furthest from the flange distal edge 410. The location L is such as to allow the U-shaped joint 16 of the clip 10 to be moved thereto when a wire strand S is moved into the slot 406 (see Fig. 10C).

In the embodiment of Figures 9 and 10, the first side 413 is defined as a curve (i.e. that curves inwardly of the flange) from one side 421 of the entrance part 414, and then curves back to the closed end 419. In a variation, the first side could comprise two e.g. straight sections that extend to the location L (i.e. one section extending from the side 421 and the other section extending from the closed end 419).

However, the shape of the retention part 412 shown in Figures 9 and 10 (i.e. including a curved first side 413) has been found to be optimal. In this regard, the shape is such as to minimise the amount of flange material (e.g. steel) that is removed during punching/cutting of the slot 406 (i.e. the retention part 414 has a maximum width at the centre of its longitudinal axis, whilst more material is retained at its opposite ends). The semi-circular closed end 419 also minimises the amount of flange material (e.g. steel) removed at this end. The result of this careful shaping of the slot 406 is that it helps to preserve some strength in the flange in the vicinity of the slot.

As shown especially in Figures 9D and Figures 10A-10C, the location F on the first side 413 (i.e. spaced furthest from the flange distal edge 410) is such as to provide sufficient clearance to enable the movement of e.g. a wire strand S into the retention part 412 of slot 406. In this regard, when the strand S is first moved laterally into the entrance part 414 and is then moved axially towards the closed end 419, the strand is initially brought into contact with the U-shaped joint 16 of the clip 10 (Fig. 10A). The strand S is then moved further along the second side 416 so as to further deflect the clip 10 inwardly (i.e. away from the flange distal edge 410 - Fig. 10B). Because the first side curve 413 effectively extends for length of the axially extending retention part 412, the curve allows the U-shaped joint 16 to be displaced laterally further away from the flange distal edge 410 than would otherwise be allowed by those passage/slot/notch configurations as set forth in the prior art. Thus, the wire strand is able to be moved past each of the U-shaped joint 16 and the second opposing side 416, and into the retention part 412, towards the closed end 419 (Fig. 10C). Having moved therepast, the bias in the clip 10 (clip “compression mode”) moves the U-shaped joint 16 back to the second opposing side 416 (i.e. back to the position of Fig. 10A).

Referring particularly to Fig. 9D, it will be seen that the retention part 412 defines a discrete section 415 of the adjacent flange distal edge 410. A discrete section 416A of the second opposing side 416 (i.e. that is generally parallel to the flange distal edge 410) has an inwardly facing edge that is able to interact with the U-shaped joint 16 of the clip 10, 10’ in use. In this regard, the edge of section 416A provides a bearing or resting surface against which the U-shaped joint 16 of the clip 10, 10’ locates (abuts) when in a latching mode (i.e. the wire strand-retaining/clip compression mode -position of Fig. 10A).

Again, referring particularly to Fig. 9D, it will be seen that the second opposing side 416 comprises a step 417 formed to extend inwardly of the flange. The step 417 is configured and located such that, when the clip 10 is mounted to the post 400, the U-shaped joint 16 is urged (i.e. biased) to locate adjacent (i.e. to sit next) to the step 417 (see Fig. 10A). The step is thereby arranged so as to at least partially obscure a passageway for the strand S between the U-shaped joint 16 and the edge of section 416A. Thus, when the wire strand S is located adjacent to the closed end 419, and the U-shaped joint 16 is biased to sit adjacent to the step 417, this passageway is obscured. The geometry of the slot thereby enhances the wire strand-retaining function of the clip (i.e. providing a gate/latch/catch function) in use. However, it should also be noted that the degree of curvature of the first side 413 is sufficient to provide enough clearance to enable the wire strand S to be moved past the step 417 and into the retention part 412.

Referring now to Fig. 9D, it will be seen that the first side 413 has a radius of curvature rc the length of which approximates the extent of an arc of swing as, being the ideal arc moved along by the U-shaped joint 16 in use (i.e. for maximum extent of swing). The swing arc as is the length of the arc as shown in Fig. 9D extending between the first side 413 and the section 416A of the second side 416. The first side radius of curvature rc extends from a point located on a perpendicular line Pl. The perpendicular line Pl extends through a midpoint of the axial length Al of the retention part 412. The first side curve 413 is generally symmetrical about the perpendicular line Pl.

The radius of curvature rc of the first side 413 of the slot 406 is generally defined by the position of a punch when the slot is cut out during manufacture. When punching the slot, the perpendicular line Pl effectively becomes set by the centre of the radius of the slot once formed. The position of the punch is located such that the effective swing distance (arc of swing) of the U-shaped joint 16 is maximised as far as possible up the curve of the first side 413 (ideally to the apex of the curve).

In the post embodiment of Figures 9 and 10, the retention part of the slot 406 is generally axially aligned with its corresponding elongate hole 404 (see Fig. 9C). This helps determine the arc of swing of the clip 10, 10’ in use (i.e. it determines the way in which the U-shaped joint 16 swings back-and-forth between the first side 413 and second side 416 in the retention part 412).

Thus, it can be seen that the geometries of the slot 406 are selected such that insertion of a wire strand S into the slot is relatively easy, but removal of the wire strand S from the slot is relatively difficult.

Whilst in the Figures only one such clip 10, 10’ is depicted as being mounted to a given post 100, 200, 300, 400, as mentioned above, a number of similar clips may be mounted at various other holes/slots along the length of the post.

The clips and system as described above can reduce the degree of manual labour when retaining one or more wire strands to a post, and can enable simple and rapid attachment of wire strands to a post by a user in the field. The clips and system can eliminate the services of a skilled fencer. The clips and system can also reduce the number of special tools required.

Examples

Non-limiting Examples of a method for retaining at least one wire strand S to a post will now be described, with reference to the various embodiments as shown in Figures 1 to 6.

Example 1 Y-posts 100 for use in agricultural fencing were selected together with multiple clips 10. In this application, a four stranded wire fence was required, so four clips per post were employed.

Each post was suitably spaced and was driven (“sunk”) into place in the earth with a fence post driver. Each elongate flange 102 was arranged such that a suitable “facing” of the resultant wires was achieved. The respective locations for each of the wire strands above the ground were noted (e.g. marked) with reference to each pairing of hole 104 and slot 106 along the flange 102.

Each clip 10 was now mounted to the post in accordance with the sequence shown in Figures 5A to 5C. In this regard, the second leg 14 was to be located on one side of the flange 102 and the first leg 12 was to be located on an opposite side of the flange 102, with the joint 16 to be located in a respective slot 106, and the hooks 18, 20 to be hooked into a respective hole 104.

First, the joint 16 was manoeuvred into slot 106. Simultaneously, or commensurately, the hook 20 was hooked in one end of the hole 104 from one side of flange 102. In this regard, the end 21 projected in a skewed direction so as latch onto the opposite side of the flange, adjacent to one long edge of the hole 104.

The first leg 12 was then deflected downwardly (i.e. the clip was compressed) on an opposite side of the flange 102, to enable the hook 18 to be located adjacent to (i.e. to be aligned with) the hole 104 at the opposite side of the flange 102.

The hook 18 was then laterally deflected towards the hole, causing it to pass through the hole 104, and locating the hook 18 at an opposite end of the hole 104. A gentle release of the clip compressive force then enabled the angled, skewed end 19 of the hook 18 to move into a latching position, whereby it was able to latch to said one side of the flange 102, and adjacent to an opposite edge of the hole 104. Each mounted clip 10 was now ready to be loaded with a strand of wire S. First, the strand S was passed into the entrance portion 114 of slot 106. In the slot arrangement of Figures 2 & 3, the strand was urged downwardly, adjacent to the inside edge 116. In the slot arrangement of Figure 6, the strand was urged upwardly, adjacent to the inside edge 116. In either case, this caused the “spring-loaded” joint 16 to be deflected inwardly by a distance of the strand thickness. Having moved past the joint 16, the joint 16 deflected back into abutment with the inside edge 116, and the strand passed into the strand retaining portion 112 of the slot 106. The strand S was now captured for retention in the slot 106.

Example 2

Posts 200 for use in fencing were selected together with multiple clips 10’. In this application, a multi-stranded wire mesh was required to be mounted to each post, so multiple clips per the number of horizontal strands in the mesh were employed. Each post was spaced and was driven into place in the earth with a fence post driver, as per Example 1.

Each clip 10’ was now mounted to the post by locating and hooking the hook 220 in a lower end of the vertical portion 207 of the L- or V-shaped hole 204, from one side of flange 202. At the same time, or directly after the hooking in of hook 220, the joint 216 was located in a respective slot 206, and the first leg 212 was located on an opposite side of the flange 202.

The first leg 212 was then compressed until the finger 218 located adjacent to the transverse portion 205 at the opposite side of the L- or V-shaped hole 204. The finger 218 was then pushed through the transverse portion 205, and the leg 212 was released, so that the finger 218 latched onto the flange 202, adjacent to its distal edge 210.

Each mounted clip 10’ was now ready to be loaded with a strand of horizontal wire in the mesh, in the same manner as for Example 1.

Example 3

Posts 400 for use in fencing were selected together with multiple clips 10. In this application, multiple strands of fence wire were required to be mounted to each post, so multiple clips per the number of fence wire strands were employed. Each post was spaced and was driven into place in the earth with a fence post driver, as per Example 1. Each clip 10 was also mounted to a given post 400 in a similar manner to that of Example 1.

Each mounted clip 10 was now ready to be loaded with a strand of wire S. First, the wire strand S was moved into the retention part 412 of slot 406. The strand S was brought into contact with the U-shaped joint 16 of the clip 10, to cause the clip to start to deflect inwardly, away from the flange distal edge 410. The strand S was then moved axially towards the closed end 419, along and adjacent to the section 416A of the second side 416, causing the clip 10 to deflect further inwardly. The strand S was then moved past the step 417, between it and the U-shaped joint 16, and then into the retention part 412, towards the closed end 419. This caused the U-shaped joint 16 to be deflected close to (or to abut) the curved first side 413. Having moved therepast, the bias in the clip 10 (“compression mode”) moved the U-shaped joint 16 back to the section 416A of the second side 416, in behind the step 417. The wire strand was now retained (captured) in the retention part 412 of slot 406.

The methods of Examples 1 to 3 were able to be deployed manually, or using a tool/gun, and on site. The methods were observed to securely mount each clip to the post, and to securely retain each strand at the post. The methods were able be deployed simply and easily by a user, reducing or eliminating the need for skilled labour. The methods were also able to be simply automated.

The methods enabled a user (e.g. a farmer) to simply and rapidly construct a fence line, and without the need for complex tools. The clips and posts were also easy and cost-effective to manufacture.

Whilst a number of specific apparatus, post, system and method embodiments have been described, it should be appreciated that the apparatus, post, system and method may be embodied in many other forms.

For example, the strand to be attached to the post can include elongate components such as rod, bar, tape, cord, etc. The post need not be limited to upright posts and pickets and can include rails, cross-members, struts, stays, channels, trellis posts, etc which in use can also extend other than vertically.

Whilst a usual application of the apparatus, post, system and method is in fencing, to secure wire strands and mesh to a fence post, the apparatus, post, system and method can be employed in applications such as demarcation, signage, retention, barricades etc.

Also, whilst the posts are usually roll-formed from steel to have a Y-shaped or T-shaped profile, and are usually cut at the end to take the form of a picket, the posts can optionally be moulded from a plastic material (e.g. for use in electric fencing).

In the claims which follow, and in the preceding description, except where the context requires otherwise due to express language or necessary implication, the word “comprise” and variations such as “comprises” or “comprising” are used in an inclusive sense, i.e. to specify the presence of the stated features but not to preclude the presence or addition of further features in various embodiments of the apparatus, post, system and method as disclosed herein.

Claims (27)

1. Apparatus for mounting to a type of post that comprises an elongate flange having at least one aperture through the flange and, spaced from the aperture, having at least one passage that extends into the flange from a distal edge thereof, the apparatus comprising first and second legs that are connected at their proximal ends by a connector, the connector able to be located in the passage, with each leg comprising a formation at its distal end that is able to be located at the aperture to mount the apparatus to the post, wherein, when the apparatus is viewed in profile, the first leg extends at a first angle with respect to the connector and the second leg extends at a second angle with respect to the connector, the second angle being less than the first angle.

2. Apparatus for mounting to a type of post that comprises an elongate flange having at least one aperture through the flange and, spaced from the aperture, having at least one passage that extends into the flange from a distal edge thereof, the apparatus comprising first and second legs that are connected at their proximal ends by a connector, the connector able to be located in the passage, with each leg comprising a formation at its distal end that is able to be located at the aperture to mount the apparatus to the post, wherein, when the apparatus is viewed in profile, the first leg extends up and away at a first angle with respect to the connector and the second leg also extends up and away at a second angle with respect to the connector.

3. Apparatus as claimed in claim 2 wherein the second angle is less than the first angle.

4. Apparatus as claimed in any one of the preceding claims wherein the distal extent of the first leg is greater than the distal extent of the second leg.

5. Apparatus as claimed in claim 4, the apparatus for use with an aperture in the flange that is elongate such that, when the formations are located at the aperture to mount the apparatus to the post, the greater distal extent of the first leg causes its formation to interact with one end of the elongate aperture, and the lesser distal extent of the second leg causes its formation to interact with an opposite end of the elongate aperture.

6. Apparatus as claimed in any one of the preceding claims wherein the connector comprises a central region that is located distal to the first and second legs, with a first portion of the connector extending from the central region to the first leg and such that the first angle is formed between the connector first portion and the first leg, and with a second portion of the connector extending from the central region to the second leg and such that the second angle is formed between the connector second portion and the second leg.

7. Apparatus as claimed in claim 6 wherein, when the apparatus is viewed in profile, the connector second portion extends at a third angle, out of a plane in which the connector first portion lies.

8. Apparatus as claimed in claim 6 or 7 wherein, when the apparatus is viewed in plan, the connector first and second portions combine to define a U-shape, with the central region being located at a base of the U-shape.

9. Apparatus as claimed in claim 8 wherein one stem of the U-shape that forms part of the connector first portion is longer than the other stem of the U-shape that forms part of the connector second portion.

10. Apparatus as claimed in any one of the preceding claims wherein the formation at the distal end of each leg comprises a hook or lateral projection.

11. Apparatus as claimed in claim 10 wherein the formation defined at the distal end of the first leg generally projects in an opposite manner to the formation defined at the distal end of the second leg.

12. Apparatus as claimed in claim 10 or 11 wherein, when the first and second formations are each located in the aperture to mount the apparatus to the post, the angling of the first and second legs with respect to the connector is such as to cause the first formation to interact with one edge of the aperture, and to cause the second formation to interact with an opposing other edge of the aperture.

13. Apparatus as claimed in claim 11 or 12 wherein each of the apparatus and aperture are configured such that, when the first and second formations are each located in the aperture to mount the apparatus to the post, the first and second legs tend to bias apart from each other.

14. Apparatus as claimed in claim 13 wherein, when the connector is located in the passage, said tendency of the legs to bias apart causes the connector to be urged towards an edge of the passage.

15. Apparatus as claimed in claim 14, the apparatus for use with a passage that comprises: an entrance portion that extends generally laterally into the flange from its distal edge, and a retention portion that extends from and generally laterally with respect to the entrance portion; whereby the lateral extension of the retention portion of the passage defines adjacent thereto a discrete section of the flange distal edge; and whereby said tendency of the legs to bias apart causes the connector to be urged towards an edge of the passage retention portion, being that edge which is defined by an inner edge of said discrete section.

16. Apparatus as claimed in claim 15 wherein an inside edge of the discrete section of the flange distal edge comprises a step formation therein, whereby the connector is urged to locate at the step formation in use.

17. Apparatus as claimed in claim 15 or 16 wherein, in use of the post, when the passage is arranged in the flange above the aperture, the retention portion extends from the entrance portion up into the flange, and the discrete section of the flange distal edge extends down to the entrance portion of the passage.

18. Apparatus as claimed in claim 17 wherein, when the aperture is elongate, the formation at the distal end of the second leg is configured to locate at an in-use upper end of the aperture, and the formation at the distal end of the first leg is configured to locate at an in-use lower end of the aperture.

19. Apparatus as claimed in any one of the preceding claims, wherein the elongate flange of the post to which the apparatus is mounted defines an upper end edge, and the flange distal edge generally extends for a length of the flange, and wherein a portion of the upper end of the flange is removed such that the upper end edge terminates at a location that is inset with respect to the distal edge, and such that the distal edge terminates at a location that, in use, is lower than the upper end edge of the flange.

20. Apparatus as claimed in claim 19, wherein the removed portion is defined by: an in-use upwardly facing slot that extends into the flange from the upper end edge, adjacent to its distal edge, such that the slot defines adjacent thereto a discrete section of the flange distal edge, wherein the discrete section of the flange distal edge terminates at the location that, in use, is lower than the upper end edge of the flange; or a cut-away region of flange, the cut-away region being defined by a bevelled edge that extends from the inset location of the upper end edge to that location of the distal edge that is lower than the upper end edge.

21. Apparatus as claimed in any one of the preceding claims, the apparatus when mounted to the post being configured to retain a strand in the passage.

22. Apparatus as claimed in claim 21 wherein in use of the apparatus when mounted to the post, the strand is first moved past the connector when in the passage, the strand thereby being retained in the passage behind the connector.

23. Apparatus as claimed in claim 22, when dependent on any one of claims 15 to 18, wherein in use of the apparatus when mounted to the post, the strand is first moved into the entrance portion, then past the connector to deflect the latter into the retention portion, the strand thereby being retained in the retention portion behind the connector, with the latter deflecting back to close the entrance portion.

24. A post that is configured for use with an apparatus as defined in any one of claims 1 to 23, the post comprising an elongate flange having at least one aperture through the flange and, spaced from the aperture, having at least one passage that extends into the flange from a distal edge thereof, the passage comprising: an entrance portion that extends laterally into the flange from the distal edge, a retention portion that extends from the entrance portion in an axial direction of the flange, the retention portion having first and second opposing sides that extend to a closed end, the first side located laterally further from the distal edge than the second side; wherein the first side extends from each of the entrance portion and closed end to an intermediate location of the first side that is spaced furthest from the distal edge.

25. A post as claimed in claim 24, wherein the first side curves inwardly of the flange to said location, wherein the curve of the first side is defined by a radius that extends from a point located on a perpendicular line taken from a midpoint of the axial length of the retention portion, and wherein the perpendicular line intersects with said location.

26. A post mounting system comprising: the apparatus as defined in any one of claims 1 to 23; and a post that comprises an elongate flange having at least one aperture through the flange and, spaced from the aperture, having at least one passage that extends into the flange from a distal edge thereof.

27. A method for mounting the apparatus as defined in any one of claims 1 to 23 to a post that comprises an elongate flange having at least one aperture through the flange and, spaced from the aperture, having at least one passage that extends into the flange from a distal edge thereof, the method comprising: locating the formation at the distal end of the second leg in the aperture and locating the connector in the passage; urging the first leg to deflect it so as to enable the formation at the distal end of the first leg to be located at the aperture.