Farriery – Shoes – Cushioned
Reexamination Certificate
1998-09-14
2001-06-12
Poon, Peter M. (Department: 3643)
Farriery
Shoes
Cushioned
C168S013000, C168S016000
Reexamination Certificate
active
06244352
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention refers to shoeing systems having a horse shoe or a base carrier and a shoe insert of attenuating material such as rubber, plastic, or the like, between the hoof and the shoe. The one part or two part insert is adapted to form the shape of the horse shoe. The insert is nailed in the front area between the hoof and shoe and is moved laterally and relative to the shoe interior area together with the hoof.
Legs of horses, especially of riding and jumping horses, are extremely sensitive and prone to injuries. Because the hocks are mainly grown of horn, bones and tendons, and have little muscle volume they undergo extremely high strains in the form of vibrations, shocks and impacts. With a horse's hoof a movement called hoof mechanism is created within the hoof. With common shoe insets this movement is decelerated. Without shoe inserts said movement happens between the hoof and the horse shoe, with the result that the hoof is ground down in the hoof area causing the hoof to be in the wrong position.
In general, the horses+ hooves are shoed with horse shoes which are nailed onto the hoof. There are also known orthopaedic shoeing systems with a plate of leather or plastic material fastened with nails between the hoof and the horse shoe. In order to substitute this plate, when it is worn out, the nailing connection at the hoof has to be destroyed. This system is not hygienic and gives rise to inflammation because it is not possible to clean the sole area of the hoof.
It is an object of this invention to provide a shoeing system which allows optimum comfort to the horse and a high degree of cushioning and energy absorption when landing after a jump, which guarantees a perfect fit and support against twisting of the hoof, and which provides a controllable heel mechanism without any wear of the horn.
According to this invention this objet is solved by a one part or two part insert which is adapted to the form of the horse shoe, and in the front area is nailed between the hoof and the horse shoe and is moved laterally and relative to the horse shoe in the rear area together with the hoof.
U.S. Pat. No. 5,180,017 discloses a shoeing system comprising a horse shoe plate or a base support, a replaceable horse shoe pad of cushioning material between hoof and horse shoe plate, and a firm connection of the horse shoe plate and the horse shoe pad with the hoof. The pad consists of a replaceable sole plate with several cleat-like members which are in contact with the soil ad which extend outwardly from the pad opposite the hoof, and which pass through apertures in the horse shoe plate. Horse shoe plate and horse shoe pad are fastened onto the hoof by means of nails through apertures within the horse shoe and the horse shoe pad so that the pad is stationary connected with the horse shoe and the hoof along the active extension of the horse shoe, and accordingly, the horse shoe pad cannot move relative to the hoof nor the horse shoe.
SUMMARY OF THE INVENTION
In order to protect the hoof against vibrations and impacts, and to allow the sole area of the hoof to be cleaned, the base carrier (the horse shoe) is embedded in cushioning material. The contact surface can be quickly assembled and disassembled by an unskilled person. Before the base carrier is fastened onto the hoof a thin cushioning ring of flexible material, e.g. of rubber, plastic or the like shaped according to the base carrier which allows the sole area to be accessed, is fastened by nails. In this manner the base carrier is not positively in contact with the hoof. The cushioning ring acts as a compensation means for vibrations and impacts. Because it is adapted to the shape of the base carrier and is not a solid plate as usual, the sole area can be cleaned and the hoof is able to “breathe.” Moreover, the cushioning ring serves to balance smaller uneven areas between the rim of the hoof and the base carrier so that with hot shoeing or also cold shoeing a complete fit is guaranteed.
The base carrier according to the invention can be provided with contact surfaces which according to the conditions, e.g. harder or softer soil, can be chosen at will. This contact surface can be a combination of steel and rubber which in addition compensates the vibration and impacts. The steel core of the base carrier can be embedded from top to bottom into attenuation material and therefore, is insulated in view of oscillations and vibrations. This is of advantage insofar, as the required stability of the steel can be used without there being the disadvantages of vibration.
By means of different profiles of differing grip, variable contact surfaces can be provided for. With the variable contact surfaces the “track” of the horse's legs can be adjusted, as is required for so-called Western riding. With a closed contact surface which is screwed onto the horse shoe, it is possible, by horizontally twisting the horse shoe, to make the track irons on the contact surface extend more inwardly rather than outwardly. This allows to adapt the track of the horse's legs to the soil condition available without needing the assistance of a blacksmith. Altering the track can be achieved by rotating the entire contact plate or by altering the movable track iron.
In order to avoid the desired incorrect positions of the hoof, according to the subject invention, a slide member is inserted into the shoe insert in the heel area which is directed towards the horse shoe and the gliding ability thereof is higher than that of the shoe insert. In this manner, the hoof mechanism is improved and the horn wear considerably reduced. By means of a bead (or elevation) the shoe insert is fixed at the inner side so that fastening by means of nails, rivets or the like is not necessary. A bead at the shoe insert prevents direct and dung from collecting within the hoof so that the hoof is protected against rotting between the hoof sole and the horse shoe. This type of bead is formed at the inner side of the shoe inset covering the entire periphery and extending upwardly towards the hoof. If any pressure is exerted on the bead the bead is pressed against the hoof and protects the hoof against deposits between the hoof and the horse shoe. Furthermore, this will prevent the dirt from collecting within the hoof.
According to a preferred embodiment of this invention, the base carrier or the horse shoe is made of a light-weight metal or PVC in order to reduce weight. These materials show rather high wear so that the thickness chosen for the horse shoe should be greater. In order to avoid wear and tear, the base carrier of light-weight metal or PVC is provided with wear-resistant material, e.g. V2a, ceramics, tools steel, hard metal, or the like. The horse shoe on the base carrier is provided with a contact surface having an extension, and the extended gripping rim extends along the outer portion of the base carrier; within the nail area the gripping rim extends along the outer portion of the base carrier; within the nail area the gripping rim is outside of the nail line. The griping rim forms one piece with the horse shoe. It can be used as a substitute for stakes. In order to improve the grip, the wear-resistant portions are projecting or are poured in plane in order to reduce considerably wear. The wear portions e.g. are made in one piece and embrace the entire hoof in the form of a horse shoe; alternatively, they can be made of several short portions which are arranged distant from each other around the entire periphery of the horse shoe. In order to improve the statics at the horse shoe and in order to prevent the heel portion of the hoof from sinking too much into the soil, when riding occurs on softer soil, which would be a danger for the flexor muscle mechanism, the base carriers are placed in the area of the heel starting from the third or fourth nail hole towards the end in a widened shape. The widening is at least 5 mm. This will allow that the heels during the movement of the heel mechanism always move on the horse shoe and will
Hoffman Wasson & Gitler
Nguyen Son T.
Poon Peter M.
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