WO2013064353A1

WO2013064353A1 - Equine snaffle bit with one or two joints and a process for producing such a snaffle bit

Info

Publication number: WO2013064353A1
Application number: PCT/EP2012/070265
Authority: WO
Inventors: Heinz Baumann; Valentin Völlmecke
Original assignee: Herm. Sprenger Gmbh & Co. Kg
Priority date: 2011-11-03
Filing date: 2012-10-12
Publication date: 2013-05-10
Also published as: DE112012004614A5

Abstract

The equine snaffle bit has two lateral parts (20, 22) and a shackle (24) disposed between said lateral parts (20, 22). The shackle (24) has either one or two joints (26, 28) and comprises two lateral sections (26, 27), and optionally a middle section (32). Each lateral section (26, 27) has one end that is distal to the at least one joint (26, 28), and in each of those ends there is a joint bore for receiving one of the lateral parts (20, 22) in an articulated manner. A sheath (28) consisting of a rubber-like material surrounds the shackle (24) for a portion of the overall length of the shackle (24). The sheath (28) has two end regions (30), and each end region (30) is fixedly connected to the associated lateral section (26, 27). The distance between the end region (30) and the adjacent joint bore is the same for both lateral sections (20, 22).

Description

Horseshoe bite with one or two joints and method of making such a horseshoe bite

The invention relates to a horse tweezers with two side parts, which are in particular formed as rings, and a bracket arranged between these side parts either one or two joints and having two side portions and optionally a central portion, each side portion of the other side portion has remote end and in this end of the side portions each have a bore for the pivotal receiving a respective one of the side parts is formed, and to a method for producing such a horse tread dentition. A horse trench denture of the type mentioned is known from EP 1 140 693 Bl. There is shown in Figure 1, a horse tweezers with a central portion and two joints, such a dentition is also referred to as a double-broken dentition. In Figure 2, a horse tails denture is shown with a joint, a middle section is absent, such a dentition is also referred to as simply broken.

From DE 44 23 560 AI a horse tack can be seen, which has a bite bar. This is carried out with a flexible core rod and a leather jacket enclosing this core rod, which is closed along a jacket closing line. The dentition has no joint.

From DE 84 20 592 Ul a bit for horses is known, which also has no joint. It has a bite bar, it is made of a shaped body with an approximately oval or circular cross section and made of a high abrasion resistance, rubbery elastic material, in particular a crosslinked polyurethane elastomer. In this molded body, an elastic web is embedded.

A denture for horses is known from DE 84 05 615 Ul, which comes from the same ancestor as the latter denture. Here, the shaped body is made of egg ^¬ nem elastic and incompressible plastic. From DE 87 04 267 U l a bridle bit is known, the jaw has a soft, solid core and a soft coating which is wound around this core has. For example, the core may be constructed of thin, flexible, twisted stainless steel wires. The coating may be made of a suitable resin material and is preferably impregnated with a suitable vegetable or fruit essence. Also this bit is without joint.

The invention has made it its mission, while retaining essential features of the horse tread denture of the aforementioned type, to further develop this in such a way that it is even better adopted by the horse and has a smoother outer sheath of the mouth piece.

This object is achieved on the basis of the horse tweezers of the type mentioned by a jacket of a rubber-like material, which surrounds the bracket on a part of the overall length of the bracket and has two end portions, that each end portion is fixedly connected to the associated side part, that Distance between the end portion and the adjacent hole for each side portion is the same size. In this horse tweezers the jaw is formed by the temple and the mantle. The central area of the temple is covered by the mantle. On both sides of the end regions of the shell, metallic regions of the side sections remain free, so that here the horse has contact with metal, in particular a copper alloy. The end areas are in a range of ± 40%, in particular ± 30%, preferably ± 20% of the longitudinal center of the respective side part, all figures plus / minus 10%. The uncovered area of the side part outside the shell is the same length for both side parts. In this respect, there is a symmetry. The jacket is located at equal distances to the side panels.

The jacket has a preferably smooth or non-textured surface. It is designed so that the articulation of the jaw is indeed less than a jaw without a mantle, but still exists. The rubbery material is selected to have a Shore A hardness of from 30 to 60, preferably from 35 to 45, all plus / minus 10%. Thermoplastic rubbers which have a pronounced rubber-elastic range, thermal elastics not being permanently reshapeable in contrast to thermoplastics, or elastomers are used as rubber-like material. Elastomers have a more pronounced rubber-elastic range due to chemical crosslinking of the molecules. A plastic shaping is usually not possible. In particular, a rubber is used for the jacket. For the substances mentioned and in particular to rubbers is referred to the DE-book Saechtling, Kunststofftaschenbuch, 28th edition, Hanser Verlag, pages 759 ff.

The invention also relates to a method for producing a denture. In this method, first a bracket made of metal, which is fully functional, it largely corresponds to the stirrup of the bit of the type mentioned and could be used for a horse bit. This bracket is now either covered with a jacket, wherein a prefabricated jacket is used, or it is transformed so that the jacket is formed. In both cases, the end regions of the shell are permanently and firmly connected to the metal of the side sections. This is preferably done by a rubber-metal compound. Here, methods can be used, as they have proven for rubber-metal compounds. Preferably, a vulcanization takes place.

Between the end regions of the jacket is tight, in particular, it is waterproof. The coat is impermeable to water. The only entry point for water, air or the like is located at the transition point of the end regions to the metallic side parts. However, these sites are permanently tight, no intrusion takes place on them.

The jacket preferably has a substantially constant outer shape over its length. The jacket preferably has a substantially constant outer circumference over its length. However, the sheath can also vary in its outer circumference, for example substantially simulating the shape of the metallic parts of the mouth piece. The Applicant reserves the right to combine any features of the claims, including individual features with each other and with any features, even individual features of the description. Further developments of the invention can be found in the dependent claims. In the following, embodiments of the invention will be described in more detail with reference to the drawing, these embodiments are not intended to be limiting. In the drawing: a plan view of a doubly fractured denture with a coat shown in section, a representation like Figure 1, but the jacket is now designed as a tube, a representation as Figure 1, but the jacket is now a combination of hose and a Inner shell executed, a side view of a bit with a thickened, rounded coat,

Fig. 5: a representation similar to FIG. 3, but now with a tapered jacket and FIG. FIG. 6: a side view like FIG. 3, now with special, stepped side parts, which are sheathed by the coat, partially cut away, from their step, the denture is simply broken. FIG. The horse bit has two side parts 20, 22, which are represented here by rods, they can also be designed as rings. The side parts 20, 22 are in a known manner in bores of a between these side parts 20, 22 located bracket 24, more specifically, in side sections 26, 27 of the bracket 24 is formed. Under bracket 24, the metallic structure of a jaw is called. The mouth piece of the horse tread denture according to the invention is composed of a bracket 24 and a jacket 28. The coat is located It has two end regions 30, which are located approximately in the longitudinal center of the side sections 26, 27 in FIG. In any case, these end regions 30 are firmly connected to the associated side section 26, 27, so that nothing can penetrate in the region of the connection. In the embodiment of Figure 1, the jacket 28 is made by the fact that the bracket 24 is formed in its central region with elastomeric material. Characterized the jacket 28 is intimately connected to the bracket 24, not only at the end portions 30, but also between these end portions 30.

FIG. 1 shows a bifurcated fracture. Between the two side portions 26, 27 there is a central portion 32. He has two holes which have parallel hole axes and at a close distance less than 3, preferably less than 2 cm are arranged. In each of these, an eye of a side section 26 or 27 engages. As a result, two joints are formed. The joints are not free to move. They are still movable by the deformation with the elastomeric material of the jacket 28, but restricted in their movement.

If the jacket 28 were not present, you could move the two joints practically without force. If one holds such a denture on one side portion 26, 28, wherein this is held horizontally, and does not support the other side portion, the latter tilts in the vertical. This is not the case with the denture according to the invention. By the jacket 28, the two joints are stiffened to a certain extent. If one holds the bit according to the invention on only one side section and if one holds this side section in such a way that the side section is horizontal, the other, not held side section tilts downwards only by a certain angle. He does not stay horizontal. But he also does not come, as with a free joint, in the vertical. The angle is between 5 and 70 °, preferably between 20 and 40 °, all figures plus / minus 10%.

The bracket 24 of the bit according to Figure 1 is constructed according to the prior art. It differs from the prior art by the additional jacket 28. This is essentially olive-shaped. The jacket 28 has a smooth outer surface 44. The connection of jacket 28 and metallic strap parts can be achieved by a rubber-metal compound. Due to the annular encircling the jacket 28 to the bracket 24, a permanent and firm grip of the shell 28 is achieved on the bracket. Upon cooling after the molding process, the material of the jacket 28 contracts, thereby the jacket 28 adheres to the bracket 24th

In the embodiment according to FIG. 2, the jacket consists of a tube 34. The latter is elastically in abutment against the respective side section 26 or 27 at the end regions 30. The tube 34 is made of a material as in the first exemplary embodiment. Particularly suitable are thermoplastic and elastomeric materials, rubber is preferred. For example, silicone hoses are suitable.

The tube 34 has a wall thickness of 1 to 5 mm, preferably 3 to 4 mm. Other wall thicknesses are possible. An air space 36 remains between the tubular jacket 28 according to FIG. 2 and the metal parts located therein. This is via a very thin bore 38 with, for example, 0.5 to 2 mm bore diameter with the outer longitudinal end of the side section 26 in which the bore 38 is made , connected . In the bore 38, a micro-filter 40 is inserted. It has a pore size that allows passage of air but keeps away all microorganisms and the like.

The embodiment of Figure 3 differs from the two previously discussed embodiments as follows: The jacket 28 is no longer manufactured in one piece, as in the first embodiment, but two layers. It consists of an inner casing 46 and a hose 34. The hose completely surrounds the inner casing 46, so that the inner casing 46 is not accessible from the outside. The inner shell 46, also called inner part, is made of a very soft plastic material, it is created for example by a molding or injection process. The material has a Shore A hardness of about 25 to 35, all figures plus / minus 10%. This inner jacket 46 surrounds the tube 34. It is preferably formed around the inner jacket 46, but it can also be pushed as a piece of hose from the side. The material of the tube 34 preferably has a Shore A hardness of about 35 to 45, all figures plus / minus 10%. In the embodiment of Figure 4, the outer surface of the shell 28 is substantially cylindrical. The jacket 28 is rounded in the region of its end regions 30. It is technically designed by forming, as described in the embodiment of Figure 1 above.

Similarly, the jacket according to Figure 5. Here, the two end portions 30 are not rounded, but softly run into the contour of the respective side portion 26, 27, to create a more adapted and cheaper transition than in Figure 4.

In the embodiment of Figure 6, a bit with a jaw piece is shown, which no longer uses conventional strap parts, but uses specially adapted for the purpose strap parts. The bracket 24 is easily broken, it is composed of two side sections 26, 27 together. These each have an eyelet and are thus mutually engaged. Both side sections 26, 27 have a step 42, where they are reduced by at least 10%, preferably at least 20% of their diameter. This bracket 24 is therefore no longer usable without jacket 28 in contrast to the previous embodiments. As before, however, the bracket 24 is mechanically completely formed, it effects the mechanical structure and also ensures the tensile strength.

The reduced central area is enveloped by the jacket 28. The jacket 28 extends between the two stages 42. It passes continuously into the side sections 26, 27 outside the step 42. As a result, the jaw piece according to FIG. 6 is consistently smooth. The jacket 28 is flush with the side portions 26, 27 from. In the region of the steps 42, but preferably over the entire central region, the jacket 28 can additionally be connected to the metallic inner parts via a rubber-metal connection. The discussed bits may have different cross-sectional dimensions and cross-sectional shapes. The cross section of the jacket 28 according to the embodiments of Figures 1 to 5 may be round, oval and polygonal with rounded corners and executed in other forms. In oval formation, the longer axis of the oval may be parallel to the two parts 20, 22 or perpendicular to it. The embodiment of Figure 6 preferably has a jacket with a circular cross-section. The jacket 28 is preferably mirror-symmetrical to a median plane through the middle of the bracket 24. It extends at right angles to the longitudinal direction of the bracket 24. The end portions 30 terminate at a distance of several centimeters from the side members 20, 22, the distance is equal on both sides , The distance is between one to seven, preferably two to five centimeters.

The jacket 28 has an outer surface 44 which is smooth on the outside or unstructured. The microfilter 40 is preferably realized by hollow-fiber membranes. Such membranes are known, for example, from U.S. Patent 4,781,733, including the prior art listed on the front of this patent. The outer region of a plurality of hollow fibers is connected to the outside, for example, and the inner region of all these hollow fibers is connected to the air space 26.

The material of the jacket 28 can be used for food. Reference is made to the rules that the Federal Office of Consumer Protection and Food Safety has specified.

The jacket 28 is preferably produced in the so-called transmission molding process. By sufficient heating, vulcanization is achieved. For this purpose, a suitable vulcanization system is used. This sulfur is used. The material of the jacket 28 may include fillers such as carbon black, stearin, etc. The material of the jacket 28 preferably has a density of 1.1 to 1.2 g / cm3.

Advantageously, the bracket 24, in particular the side portion 26 or 27, below the shell 28 at least one projection 50, which may also be formed as a recess, groove rib, etc. At him a positive connection with the material of the shell 28 is achieved. A displacement of the jacket 28 relative to the bracket 24 is counteracted.

Preferably, the free length L of the left side portion 26, measured between see a bore for the associated side part 20 and the adjacent end portion 30, by at least 10%, preferably at least 30% under Unlike the free length R of the right side portion 27, measured between a bore for the associated side part 22 and the adjacent end portion 30. Basically, the Applicant claims for a horse tongs denture with two side parts and a bracket arranged between these side parts having one or two hinges and having two side sections and possibly a central section, either the two side sections being of different lengths, the difference in lengths being at least 10%, preferably at least 30%, and / or the center section being asymmetrical, that is to say one side section is longer than the other side section. Also mixed forms are possible. This means that in a horseshoe bite with a joint, the two side sections are of different lengths, since there is no center section in this case. In the case of a two-jointed horse-butt joint, it is preferable that the side portions are of different lengths, as indicated, that is, at least 10%, especially at least 30%, of different lengths. Alternatively and at the same time, however, the middle section can also be designed so that its central region, in particular its thickest point, is not located in its longitudinal center. Such, as a whole unbalanced or off-center horse tread dentures are particularly suitable for horses whose teeth are not themselves folding symmetry. The Applicant reserves a separate patent application. The features of the characterizing part of claim 1 are advantageous for this separate patent application, but not necessary.

LIST OF REFERENCE NUMBERS

20,22 side panel

24 straps

26.27 page section

28 coat

30 end area

32 middle section

34 hose

36 airspace

38 bore

40 microfilters

42 level

44 outer surface

48 inner jacket

50 lead, return

Claims

claims

1. horse tweezers with two side parts (20, 22), which are in particular designed as rings, and between these side parts (20, 22) arranged bracket (24) having either one or two joints (26, 28) and the two Side portions (26, 27) and optionally a central portion (32), each side portion (26, 27) having an end remote from the at least one hinge (26, 28) and one end in each of said side portions (26, 27) Joint hole for the articulated receptacle each of the side parts (20, 22) is formed, characterized by a jacket (28) made of a rubber-like material, which surrounds the bracket (24) on a part of the total length of the bracket (24) and the two end portions (30) has each end portion (30) fixedly connected to the associated side portion (26, 27) such that the distance between the end portion (30) and the adjacent hinge hole is equal for each side portion (20, 22).

2. Horse-trimming bit according to claim 1, characterized in that the rubber-like material is a thermal load, an elastomer or a rubber, in particular a vulcanized natural rubber styrene-butadiene blend and / or a soft rubber.

3. equine denture bit according to claim 1 or 2 with two joints (26, 28), characterized in that the central portion (32) is at most 4 cm long, in particular that the central portion (32) is at most 3 cm long.

4. Horse-trimming bit according to one of claims 1 to 3, characterized in that the one joint (26, 28) or the two joints (26, 28) as play intermeshing eyelets at the end regions (30) of the side portions (26, 27) or of the middle section (32) are formed.

5. horse tread denture according to one of claims 1 to 4, characterized in that the jacket (28) has an outer smooth surface (44) or an outer non-textured surface (44).

6. horse-trimming bit according to one of claims 1 to 5, characterized in that the jacket (28) is tubular and the at least one joint within the tubular jacket (28), or that the jacket (28) directly with the at least one joint (26, 28) is connected, so that there is no air space (36) between the shell (28) and side portion (26, 27) and optionally center portion (32).

7. horse tread denture according to one of the preceding claims, characterized in that the side portions (26, 27) are curved and form an angle of at least 10 degrees and preferably of at most 45 degrees, all figures plus / minus 10%.

8. horse tread denture according to one of the preceding claims, characterized in that the material of the jacket (28) has a Shore A hardness of 30 to 70, preferably from 35 to 45, all information respectively

plus / minus 10%.

9. horse tread denture according to one of the preceding claims, characterized in that the material of the jacket (28) is suitable for food.

10. Horse-trimming bit according to one of the preceding claims, characterized in that the free length (L) of the left side portion (26), measured between a bore for the associated side part (20) and the adjacent end portion (30) by at least 10%, preferably at least 30% different from the free length (R) of the right side portion (27) measured between a bore for the associated side member (22) and the adjacent end portion (30).

11. A method for producing a horse bit dent according to any one of the preceding claims, characterized

- that a bracket (24) is made with a joint or with two joints and a central portion (32) made of metal,

- That either a portion of a tubular shell with an outer wall and an inner wall provided and pushed over the bracket (24) and the end portions (30) of this shell with the side portions (26, 27) are firmly connected, or the bracket (24) is placed in a mold and the shell (28) is created by the fact that the bracket (24) is transformed.