AU6181999A - Equine multi-purpose protector boot - Google Patents

Description

WO 00/16614 PCT/AU99/00800 Title of Invention: Equine Multi-Purpose Protector Boot Field of Invention: 5 This invention relates to the field of equine protector boots with the aim of assisting in the eradication of major problems encountered by the equestrian industry with the soundness of horses' hooves. As such the invention provides a removable protective covering for the hoof of a horse. 10 Background of the Invention: For many years it has been known that for a horse to travel and remain sound it needs feet that are in good form and condition. This principle is embodied in the often-quoted old horseman's saying "no feet, no horse". 15 Traditionally, horses have been shod with the well-known metal shoe. Such shoes protect and support the outer edge of the hoof and are attached to the foot by nailing through the horny tissue of the hoof wall. These conventional shoes wear with use and also must be removed and replaced every 6 to 10 weeks as the horse's hoof 20 grows. There are also many varied problems of disease and damage that are associated with horses' feet. Abscesses in the hoof, bruises in the sole, corns, torn or ripped hoof walls or thrown shoes are just a few conditions that will prevent a horse from being 25 ridden and/or will result in the confinement of a horse to a stable or paddock. There is a need for a multi-purpose boot designed for easy and rapid fitting to the hoof, providing both good traction from the sole and comfort for the horse. Such a boot could be used as a substitute for a conventional shoe in day to day riding or 30 training situations and also would have a wide range of veterinary uses (eg protecting bruised soles, abscesses in the hoof, torn hoof walls where nailing is not possible). The present invention seeks to meet this need. -1- WO 00/16614 PCT/AU99/00800 Summary of the Invention: This invention accordingly provides an equine multi-purpose protector boot 5 comprising: A - a sole member with an upwardly depending rim extending around the periphery of the sole member at least at the toe and at each side, wherein the inner surface of said rim is substantially vertical at least in the region 10 of the sides of the sole member to allow differing shaped hooves to drop down onto the platform of the sole without restriction, and the said rim is of sufficient rigidity to provide resistance to lateral movement of the hoof; B - at least one side flap located at each side of the hoof, 15 attached to or integrated with the sole member, and composed of flexible material which is able to conform to the shape of the sidewalls of the hoof; C - an outer compressive cover, provided with means to force the side flaps into conformation with the shape of 20 the hoof and prevent lateral movement of the hoof in the boot; D - a heel member, flexibly attached to the rear of the sole member and shaped to include at least one fastening strap adapted to pass around the pastern bone at a point within the range 25 of 2 to 3.5 cm above the coronary band of the hoof in such a manner that it prevents the foot from lifting out of the boot. -2- WO 00/16614 PCT/AU99/00800 Preferred Aspects of the Invention: In a preferred embodiment, re-closable complementary or mating fasteners are 5 located on the outer surface of the side flaps and the inner surface of the compressive cover. By this means the compressive cover is releasably attached to the side flaps. It is highly preferred that the fasteners are located or arranged in such a manner that 10 the compressive cover may be attached to the side flaps at a plurality of positions thus allowing for variations in hoof shape and ensuring an "encasing" fit and compression of the side flaps. In the most preferred embodiment the fasteners are of velcroTM. 15 To achieve easier fitting of the boot, it is preferred that the flexible side flaps can be opened or spread outwards as the foot is placed into the boot. If desired, the side flaps could continue around to the front of the boot and, in some circumstances, could be joined together as a unitary flap. 20 The flexible side flaps may be integrated with the sole member as a two or multi phase composition to achieve the required rigidity and hard wearing characteristics of the sole member together with the suppleness and flexibility of the side flaps. 25 The outer compressive cover may be attached either directly or indirectly to the sole member at one or more points substantially at the toe of the sole member. To allow for variations in length and shape of the hoof, it is particularly preferred that the upwardly depending rim on the side member does not extend along the rear 30 edge of the sole member, thus providing an open back to the sole. This allows the hoof to hang over the edge and when the heel member of the boot is in place it can be tightened to provide an exact, encasing fit. Such an exact fit eliminates any rearward projections at the sole of the hoof and prevents the horse overreaching and clipping the back of the heel. -3 e4 -1 1 - 1I 1 WO 00/16614 PCT/AU99/00800 The height of the upwardly depending rim from the upper surface (or "platform") of the sole member may vary from 5 to 25mm; but it is preferable that the rim is 20mm in height. The required height depends partially on the rigidity of the 5 material from which the rim is constructed to achieve the purpose of restricting lateral movement of the hoof relative to the sole member. A reinforced toecap, similar in shape and function to the toecap of conventional metal shoes, may be provided on the sole member. In a more preferred form, the 10 toecap may be wider and/or higher and encase a larger portion of the toe of the hoof than a conventional toecap. This structure helps to locate and lock the hoof into the front of the sole member. If the angle of the toecap approximates to the angle of the hoof, the result is a key-like function of the toecap. It is preferred that the angle is within the range of from 500 to 530, which is thought to conform generally with the 15 angle of the toe in most horses. Particularly preferred is an angle of 520. As the fastening strap of the heel member is tightened, the heel of the boot forces the hoof tip under the toecap. In order to maintain the correct angle of the hoof to protect the tendons from over 20 flexing, it is important that the point at the front of the sole member, where the toe of the hoof rests against the rim or toecap, is vertically in line with the break over point of the bottom of the sole member. Preferably the fastening strap of the heel member is made of a resilient material 25 which allows for movement of the horse but does not stretch enough to allow the boot to be pulled off if it is caught or trodden on. It is highly preferred that the strap runs around the short pastern bone (i.e. the second phalanx) and over the lateral cartilage; just below the moving joint and just 30 above the widest point of the coronary band; thus allowing the strap to sit snugly to maintain the most secure position possible on the leg. Any higher and the strap would be located on a moving part, which would restrict the joint. Any lower and the strap could not be stopped from sliding down the hoof. -4 1 4 12 1 , WO 00/16614 PCT/AU99/00800 In a preferred embodiment, the strap is arranged to cross over itself. From its attachment point on one side of the heel of the hoof, the strap is passed across the heel, around the pastern, then back to another attachment point at the opposite side 5 of the heel. By this arrangement, there is further means to limit or prevent the downward slide of the strap over the side of the hoof. Preferably the lower surface of the sole member is lugged to aid in traction. The lugs may be provided integrally with the sole member or may be independent and 10 constructed of a different material such as a hard wearing metal. Independent lugs may be removable and/or interchangeable. For some uses, such as in training, the lower surface of the sole member will be designed to provide hard-wearing qualities. In other, veterinary, uses the sole member may be chosen to provide cushioning qualities. 15 Materials for the manufacture of the boot include leather, canvas, korduxTM, corduraTM, nitrexTM, rubber and nylon and should be chosen for their qualities of strength, breathability and water and abrasion resistance. Preferable materials for the construction of the sole member include polyurethane rubbers such as TPR and 20 TPU. It is important for the material of the heel member to be relatively strong because it is subject to stretch forces in holding the boot to the foot and to wear by abrasion against the heel of the horse. 25 Preferably the boot is designed and constructed of suitable materials so that the tightening of the fastening strap (or straps) exerts a pressure on the hoof from front to back. This results in a squeezing effect in which the back of the boot moves forward and the front moves back. The boot may be designed so that these relative 30 movements are slight or significant in degree. -5- WO 00/16614 PCT/AU99/00800 Brief Description of the Drawings: In order that the invention may be more readily understood and put into practical effect, reference will be made to the accompanying drawings, in which: 5 Figure 1 is a side view of a boot according to the invention shown fitted to a hoof. Figure 2 is a perspective view of the boot of Figure 1 shown with the compressive cover unfastened. 10 Figure 3 is a perspective view of a sole member from the rear. Figure 4 is a plan view from below of a sole member. 15 Figure 5 is a plan view of a boot with the compressive cover shown partially in ghost form. Figure 6 is a perspective view of a boot with hoof in place, but shown without the compressive cover. 20 Figure 7 is a sectional view of the boot along the line 7 - 7 of Figure 5. Figure 8 is a rear perspective view of the boot showing the securing strap of the compressive cover in a fastened position. 25 Figure 9 is a rear view, with the rear of the compressive cover partially in ghost form, showing the fastening strap of the heel member in which the strap is arranged to cross over itself. 30 Figure 10 is a rear view of the boot shown in Figure 9 showing the compressive cover in an open position. -6- WO 00/16614 PCT/AU99/00800 Integer List 1 sole member 2 rim 5 3 inner surface of rim 4 first attachment slot 5 second attachment slot 6 holder 7 toecap 10 8 lug 9 point of rest of toe 10 break over point 11 platform of sole 12 tongue 15 13 lowered region 14 toe strap 15 heel member 16 heel-fastening strap 17 side flap 20 18 gusset 19 compressive cover 20 eye 21 first loop 22 second loop 25 23 stitching 24 securing strap 25 link 26 velcroTM 27 buckle 30 28 pastern 29 coronary band of hoof 30 hoof wall -7- WO 00/16614 PCT/AU99/00800 Detailed Description with Respect to the Drawings: Figures 1 to 10 illustrate a particular embodiment of an equine multi-purpose protector boot according to the invention. 5 The boot, shown in Figure 1 fitted to the hoof of a horse, includes a sole member 1 having lugs 8 on the underside to assist in traction. The boot further includes an outer compressive cover 19 that is held in place partly by a securing strap 24 and buckle 27. Additional means for holding the compressive cover 19 in place include 10 complementary velcroTM fasteners 26 and 26a located at the rear edges of the cover as illustrated in Figure 2. A sole member 1 is shown from two views in Figures 3 and 4. An upwardly depending rim 2 extends around the periphery of the sole but does not continue to 15 extend along the rear edge of the sole member, thus providing an open back to the sole platform 11. Shown most clearly in Figure3, the inner surface 3 of the rim at each side of the sole is vertical until the sides reach the toecap 7 allowing the hoof to drop down 20 onto the platform 11 of the sole without restriction. The inner surface 3 of the rim at the base of the toecap 7 is also vertical for a height of from 5 to 10mm. This feature allows the toe of the hoof to fit flush against the toecap 7. If the toecap 7 met the sole platform 11 at an acute angle, the point of the toe of the hoof would not make proper contact with the lower end of the toecap 7 leaving an unfilled gap at 25 the angle. In this embodiment, shown in Figure 7, the toecap 7 forms an angle of 520 with the platform 11 of the sole to approximate to the angle of the toe of the hoof. (An angle of between 50 to 530 is thought to conform generally with the angle of the toe in 30 most horses.) The point of rest 9 of the toe at the intersection of the toecap 7 and the sole platform 11 is vertically aligned with the break over point 10 of the sole. Shown in Figure 3 is a lowered region 13 in the sole platform 11. In this embodiment this region is about 2mm lower than the plane of the sole platform 11. -8- WO 00/16614 PCT/AU99/00800 This feature serves the purpose of allowing a tongue 12 of the heel member 15 to be attached to the sole member 1 by riveting (as illustrated in Figure5). The lowered region 13 provides a recess to accommodate the tongue 12 so that the sole of the hoof does not sit directly upon it. 5 As is also illustrated in Figure 3, the sole platform 11 has a substantially flat surface to which may be applied a layer of shock absorbing material. Suitable materials include EVA (sometimes known as sorbathaneT r M) and prothane r M. Because the layer is applied over the tongue 12, it is not crucial to ensure that the tongue 12 is 10 wholly within the recess of the lowered region 13. The lower surface of the sole member has integrally moulded lugs 8. A suitable lug pattern designed to provide an aid to traction is illustrated in Figure 4. 15 The sole member is provided with various slots for attachment of other components of the boot. Alternatively, the components may be integral with the sole member or could be attached by a process, such as vulcanization or riveting, which would not require the presence of the slots. 20 First attachment slots 5 at each side allow for the attachment of the side flaps 16. A second, attachment slot 4 is located in the toecap 7 for the attachment of the toe strap 14 as a first loop 21. The means of these attachments are best illustrated in Figures 6 and 7. 25 Figure 6 is a side view of the boot in place but shown without the compressive cover 19 to illustrate the attachment to the sole member 1 of various components of the boot. A webbing toe strap 14 is passed in a first loop 21 through the first attachment slot 30 4 in the toecap 7. The upper end of the toe strap 14 is provided with an eye 20 through which the fastening strap 16 of the heel member 15 passes. The side flap 17 (in this embodiment constructed of leather) is attached in a similar manner by passing second loops 22 through the second attachment slots 5 as -9 e4 I - I WO 00/16614 PCT/AU99/00800 illustrated. A layer of nitrexTM with an over layer of soft leather (not shown) is provided on the inner surface of the side flaps for the purposes of insulation and padding. The nitrexTM has qualities of cushioning and moulding and the soft leather is moisture absorbent. 5 The corduraTM or nitrexT M outer compressive cover 19 is attached to the boot by stitching 23 to the toe strap 14 along the lines indicated in Figure 2. In this embodiment, as shown in figures 2 and 8, the compressive cover 19 is provided with two securing straps 24 and a buckle 27. The compressive cover also includes 10 complementary velcroTM fasteners 26 and 26a to allow convenient fastening and to provide additional fastening strength. The straps 24 are attached to the compressive cover 19 only at or near the toe by stitching 23a rather than by stitching along a substantial portion of their length (Figure 2). The straps are passed through a holder 6 to keep them in place conveniently. By this arrangement, when the straps 24 are 15 tightened they will pull in and compress the outer compressive cover 19 all around the hoof instead of just at the rear of the hoof. VelcroTM fastening is provided on the outer surface 26b of the side flaps 17 as shown in Figure 6. Complementary velcroTM fastening 26c is provided on the inner 20 surface of the compressive cover 19 as shown in Figure 10. The lower edge of the compressive cover 19 lies along the upper edge of the rim 2 of the sole member 1, thus abutting with the sole member 1. By this arrangement, the bottom edge of the compressive cover 19 is protected to a certain degree from 25 abrasion and intrusion of debris by being flush with the rim 2. Figures 9 and 10 show the arrangement of the fastening strap 16 of the heel member 15. In this embodiment, the fastening strap 16 is fixed at a link 25 on one side of the heel. The strap is passed to the opposite side, as illustrated, around the pastern 30 and back to another link 25 on the opposite side of the heel. VelcroTM (not shown) is provided as fastening means. -10- WO 00/16614 PCT/AU99/00800 Fitting of the Boot In the first stage of fitting, the hoof makes contact with the platform 11 of the sole, the side flaps of the boot 17 and the heel member of the boot 15. The toe of the 5 hoof is hard up against the reinforced toecap 7 preventing the hoof from sliding forward over the front of the boot. The rigid rim 2 of the sole member 1 also prevents any sideways movement of the hoof. The next stage is to bring the upper part of the heel member 15 forward towards 10 the pastern bone. This entirely covers the heel of the hoof. The elastic gussets 18, located at either side edge of the heel memberl 5 and joining the heel memberl 5 and the side flaps 16, allow the heel member 15 to stretch backwards to accommodate a horse that has a larger heel-bulb or is longer in the length of hoof. 15 The toe strap 14 and the side flaps 17 are lowered inward towards the hoof. Once contact is made, the heel-fastening strap 16 is passed around the side of the pastern bone 28 approximately 2 to 3.5 cm above the coronary band 29. The fastening strapl 16 then passes through the eye 20 of the toe strap 14 and is returned 20 to the rear of the boot through the securing link 25. The next stage is to pull the fastening strap 16 up as tight as possible and then fold it back over the securing link 25. The strap, with velcroTM attached, is pressed back down firmly onto itself 25 This means that the toe and heel of the boot are now prevented from any downward movement. The heel-fastening strap 16 is now exerting pressure to the front of the pastern bone preventing any movement of the boot. The boot has thus moulded to the shape of the hoof. 30 The next step is to secure the outer compressive cover 19 to the side flaps 17 totally encasing the hoof. The compressive cover 19 has velcro TM on its inner surface and the side flaps 17 have velcroTM on their outer side. The compressive cover 19 is pressed down firmly against the side flaps 17 together with a rearward movement. The rear edges of the compressive cover 19 are fastened together and -11 - - 1 1 - WO 00/16614 PCT/AU99/00800 held in place by velcroTM fasteners 26 and 26a. This takes any looseness out of the cover and places it firmly against the hoof wall, totally encasing the hoof. The securing strap 24 is passed across the back of the boot and tightened into its buckle 27 to secure the compressive cover 19. 5 The boot will then be precisely located and firmly held in place. The invention should be understood to embrace many further modifications and embodiments as will be readily apparent to persons skilled in the art and which 10 will be deemed to reside within the broad scope and ambit of the invention, there having been set forth herein only the broad nature of the invention and a certain specific embodiment by way of example. In that regard, the disclosures in the associated Australian provisional patent applications (numbers PP6125, PP6380 and PP7731) are incorporated herein by reference. 15 - 12 I -q 1 ,, l 1

Claims (17)

1. An equine multi-purpose protector boot comprising: 5 A - a sole member with an upwardly depending rim extending around the periphery of the sole member at least at the toe and at each side, wherein the inner surface of said rim is substantially vertical at least in the region of the sides of the sole member to allow differing shaped hooves to drop down onto the platform of the sole without restriction, and the said rim is of sufficient 10 rigidity to provide resistance to lateral movement of the hoof; B - at least one side flap located at each side of the hoof, attached to or integrated with the sole member, and composed of flexible material which is able to conform to the shape of the sidewalls of the hoof; 15 C - an outer compressive cover, provided with means to force the side flaps into conformation with the shape of the hoof and prevent lateral movement of the hoof in the boot; 20 D - a heel member, flexibly attached to the rear of the sole member and shaped to include at least one fastening strap adapted to pass around the pastern bone at a point within the range of 2 to 3.5 cm above the coronary band of the hoof in such a manner that it prevents the foot from lifting out of the boot. 25

2. A boot as defined in claim 1, in which re-closable complementary or mating fasteners are located on the outer surface of the side flaps and the inner surface of the compressive cover. 30

3, A boot as defined in claim 2, in which the fasteners are located or arranged in such a manner that the compressive cover may be attached to the side flaps at a -13- WO 00/16614 PCT/AU99/00800 plurality of positions thus allowing for variations in hoof shape and ensuring an "encasing" fit and compression of the side flaps. 5

4. A boot as defined in claim 3, in which the flexible side flaps can be opened or spread outwards as the foot is placed into the boot.

5. A boot as defined in claim 1, in which the outer compressive cover is 10 attached either directly or indirectly to the sole member at one or more points substantially at the toe of the sole member.

6. A boot as defined in claim 1, in which the upwardly depending rim on the 15 side member does not extend along the rear edge of the sole member, thus providing an open back to the sole.

7. A boot as defined in claim 1, in which the height of the upwardly 20 depending rim from the upper surface (or "platform") of the sole member is within the range of from 5 to 25mm.

8. A boot as defined in claim 1, in which a reinforced toecap, similar in shape 25 and function to the toecap of conventional metal shoes, is provided on the sole member.

9. A boot as defined in claim 8, in which the toecap is be wider and/or higher 30 and encases a larger portion of the toe of the hoof than a conventional toecap.

10. A boot as defined in claim 9, in which the angle of the toecap approximates to the angle of the hoof. -14- WO 00/16614 PCT/AU99/00800

11. A boot as defined in claim 10, in which the angle of the toecap is within the range of from 500 to 53o . 5

12. A boot as defined in claim 1 or claim 8, in which the point at the front of the sole member, where the toe of the hoof rests against the rim or toecap, is vertically in line with the break over point of the bottom of the sole member. 10

13. A boot as defined in claim 1, in which the fastening strap of the heel member is made of a resilient material which allows for movement of the horse but does not stretch enough to allow the boot to be pulled off if it is caught or 15 trodden on.

14. A boot as defined in claim 1 or claim 13, in which the fastening strap of the heel member runs around the short pastern bone (i.e. the second phalanx) and 20 over the lateral cartilage; just below the moving joint and just above the widest point of the coronary band.

15. A boot as defined in claim 14, in which the strap is passed from a first 25 attachment point on one side of the heel member across the heel, around the pastern, and then back to a second attachment point at the opposite side of the heel member. 30

16. A boot as defined in claim 1, in which the lower surface of the sole member is provided with means to aid in traction. -15- WO 00/16614 PCT/AU99/00800

17. A boot as defined in claim 1, in which the boot is designed and constructed of suitable materials so that the tightening of the fastening strap exerts a pressure on the hoof from front to back resulting in a squeezing effect by which the back of the boot is moved forward and the front of the boot is moved backward. 5 -16-