EP1773713B1 - Horse snaffle bit and method for the production thereof - Google Patents

Abstract

The invention relates to a horse snaffle bit with two lateral parts and a shackle, which is situated between these parts and comprises at least one joint and two lateral sections, each lateral section having an end located a distance from the joint and a borehole is made in these distal ends of the lateral sections to accommodate one of the parts in a manner that enables them to move freely. Additionally, each lateral section has a first surface area and a second surface area; the first surface area has a matte surface and extends from the joint to a distance of at least 20% and no greater than 50% of the overall length of the lateral section from the joint, and the second surface area has a high-lustrous surface and is connected to the first surface area and extends to the distal end of the lateral section.

Description

The invention relates to a horse tweezers with two lateral parts and a bracket arranged between these parts, on the one hand has at least one joint and on the other hand has two side portions, wherein in the distal of the at least one joint end of each of the side sections a hole for the freely movable Recording each one of the lateral parts is formed and a method for producing such a horse tweezers.

Such a horse tensor bit is known from the European patent 17 959 or the WO 00/35804 , This horse tines denture has proven very useful. Further reference is made to the in this European patent 17 959 specified horse treads, especially after the US-A-4,005,564 ; GB-A-7712/1914 ; GB-A-65/1913 and DE-C-194 071 ,

In particular, has proven useful in the training of the known Pferdetrensengebisses of the type mentioned, the strap smooth, form with flowing contours and edges without edges and soft transitions between sections of the bracket. Also, a cross-sectional taper of the side portions of the rings inward has been found to be very beneficial and is maintained. The same applies to the curved design of the bracket, after which a bore for the freely movable recording of the two rings connecting the center line of the bracket is bent forward towards the palate of the horse out. This feature is achieved in the denture of the type mentioned in that the bracket has at least one joint, so that the curved training can be adjusted.

Dentures, the temple is provided with a joint, are also referred to in the following as "simply broken" dentures, dentures with a bracket with two joints as "double-broken" dentures. These two versions of Pferdetrensengebisses of the aforementioned type have a high in riders

Recognition found.

The present invention, while retaining essential features of the horse tread denture of the type mentioned in the introduction, aims to further develop this in such a way that it is even more favorable and more advantageous for a horse and, in particular, is adopted by a horse.

This is where the invention begins. It has set itself the task of further developing the Pferdensensensbite of the type mentioned and the method for its production to the effect that it is preferably adopted by a horse.

Based on the horse tweezers of the aforementioned type, this object is achieved in that each side portion has a first surface area and a second surface area, that the first surface area from the joint to a distance of at least 20% and not more than 50% of the total length of the side portion extends from the hinge such that the second surface portion adjoins the first surface portion and extends to the distal end of the side portion, the first surface portion has a matte surface, and the second surface portion has a high-gloss surface. The method, the object is achieved by a method having the features of claim 12 or 13.

While in the prior horse tread denture the surface of the side sections is continuous and uniform, it is divided into two areas in the horse tread denture according to the invention. In experiments, it has been found that this dentition is significantly improved by a horse is adopted. The tongue of a horse feels and experiences the difference in the two surface areas. The horse tongue is so sensitive that the sense of touch immediately feels the change in the surface. The sense of touch of the horse's tongue works in a similar way as the human tongue. The sense of touch senses tangible differences stronger than these differences in reality. This perceived difference stimulates play. The chewing activity is activated. The horse becomes relaxed and ready to perform. The increased chewing activity is intensified Saliva formed. Especially suitable for horses that are dry in the mouth.

Patent US 6,324,821 B1 discloses a Pferdensensensgebiss according to the preamble of claim 1. The dent reinforces the chewing activity by an electric potential difference.

There is an optical difference between the two surface areas. It produces a particularly attractive shape of the dentition.

The treatment with blasting material, also called sandblasting, increases the effective surface area. This increases the effective area. The first surface area may also extend from a joint between a lateral portion and the side trim to a maximum of 80% of the total length of the side portion of the joint.

In a preferred embodiment, the horse tweezers invention is broken once or twice. Although a number of hinges three and above may be provided, the preferred embodiments are the single fractured and doubly fractured dentures.

In addition, it has proved to be very advantageous to produce the denture according to the invention as well as the previously known denture of the type mentioned in an alloy having high copper contents and yet has a high mechanical strength, as described in the German patent DE 43 26 550 C1 is described. Other materials that may be considered are stainless steel and aluminum bronzes.

The formation of the joints is basically arbitrary. Here you can refer to the statements, as described in the aforementioned European patent, and the other prior art. In particular, however, simple embodiments of the joints have proven in which the joints are defined essentially by the engagement of two rings. Such joints have a greater freedom of movement than joints, which are defined by a fixed joint axis, and in which the two parts connected by the joint axis can move only on one plane relative to each other. When forming the joints through rings soft transitions are also achieved. It is a simple production possible. The care and cleaning is easy because the individual cavities are easily accessible. This will It is also possible to irradiate with blasting material even in the area of the joints. In addition, additional materials that make the joint common, not needed. Finally, a pinching of the horse tongue, etc. in this training of the joints is not to be feared.

In a preferred embodiment, in a doubly fractured dentition, the central portion has two mutually parallel bores for the formation of the two joints of the bracket. But it is quite possible to provide the center section with two holes, which are offset by 90 °.

It has proved to be particularly favorable to execute the middle section as short as possible in the case of a bite that has been broken twice. Thus, middle sections with a maximum length of 4 cm, in particular of 3 cm have proved favorable. In the case of simply fractured dentition, a short middle region, similar to a central portion, is already realized in that the single joint provided there is thickened with respect to the adjacent regions and thereby also the required shortness of 4, 3, 2 or less than 1 cm was requested.

Finally, it has proven to be advantageous to form the center section thickened compared to the adjacent side sections. As in the prior art, the side portions taper inwardly from the rings. In the middle region, a greater thickness is then again achieved. The smallest thickness is thus between the middle region and the rings. This training is possible and desirable in both the simply fractured and the twice fractured dentition.

Fig. 1:

eine Ansicht von hinten auf eine zweifach gebrochene Ausbildung des Pferdetrensengebisses, wobei die ersten Oberflächenbereiche etwa über die Hälfte der Gesamtlänge der beiden Seitenabschnitte erstrecken, während in der erfindungsgemäßen Ausbildung die ersten Oberflächenbereiche maximal 50% der Gesamtlänge der beiden Seitenabschnitte erstrecken,

Fig. 2:

eine Ansicht entsprechend Figur 1 für eine einfach gebrochene Ausbildung des Pferdetrensengebisses,

Fig. 3:

eine um 90° gegenüber der Darstellung in Figur 2 gedrehte Ansicht nur auf den Bügel und damit ohne die Ringe, die Darstellung entspricht einer Sicht von unten auf die entsprechenden Teile der Figur 2, und mit zwei Abdeckteilen,

Fig. 4:

eine Draufsicht auf die Abdeckteile aus Figur 3 im separierten Zustand und mit einem Seitenabschnitt zwischen ihnen, und

Fig. 5

eine perspektivische Darstellung einer anderen Ausbildung für ein Abdeckteil.

Further advantages and features of the invention will become apparent from the other claims and the following description of non-limiting embodiments of the invention, which are explained in more detail with reference to the drawings below. In the drawing show:

Fig. 1:

a rear view of a doubly broken formation of the equine dentition, wherein the first surface areas extend about half of the total length of the two side portions, while in the inventive construction, the first surface areas extend a maximum of 50% of the total length of the two side sections,

Fig. 2:

a view accordingly FIG. 1 for a simply broken training of the horse tread dentition,

3:

a 90 ° opposite to the illustration in FIG. 2 rotated view only on the temple and thus without the rings, the representation corresponds to a view from below of the corresponding parts of the FIG. 2 , and with two cover parts,

4:

a plan view of the cover parts FIG. 3 in the separated state and with a side section between them, and

Fig. 5

a perspective view of another embodiment of a cover.

Like from the Figures 1 and 2 it can be seen, the horse tweezers have two lateral parts 20, 22 which are formed as rings, and arranged between these two lateral parts 20, 22 bracket 24. He is in the embodiment according to Figure. 1 twice broken, in the embodiment of the FIGS. 2 to 4 he is just broken. Accordingly, the embodiment after FIG. 1 two joints 26, 28, which are located on both sides of a central portion 30, while in the second embodiment, the bracket has a single joint 26.

The bracket 24 has two side portions 29, 31. In the side portions bores 32 for the freely movable recording of a respective lateral part 20 and 22 are formed. These two holes 32 at the distal end, so at the free end portions of the bracket 24, define a plane that in the illustration of the Figures 1 and 2 coincides with the plane of the leaf. In the illustration after FIG. 3 this plane is perpendicular to the paper plane. The side sections 29, 31 each still have a central end in the middle of the bracket 24th

In the illustrated embodiments, the joints 26, 28 each as executed with game interlocking eyelets, which are formed at the inner end portions of the side portions 29, 31 and in the doubly fractured dentition on the middle portion 30. This special design of the joints 26, 28 allows a limited three-dimensional range of motion of the parts thus connected. The hinge axis is in FIG. 3 dash-dotted lines with 34 shown. Due to the special design of the joint by two interlocking eyelets results in a second, here at 90 ° angled joint axis 36. It is in FIG. 3 dash-dotted lines with the axis line 36 shown. Both extend at an angle of 45 ° to the plane of the holes 32 and thus in FIG. 3 to the level of the paper. The bores 32 have a bore axis 42.

The side sections 29, 31 are preferably identical. Its surface is divided into a first surface area 44 and a second surface area 46. The first surface area extends outwardly from the central end of the side portion 29, 31, where the joints 26, 28 are formed, to a distance of at least 20%. the total length of the side section. In the execution after Fig. 1 In the embodiment according to the invention, the length of the first surface area extends a maximum of 50% of the total length of the two side sections 29, 31. To the lateral parts 20, 22nd The remaining area of the side sections 29, 31 is formed as a second surface area 46. Both surface regions 44, 46 are separated by a line 48. This line 48 results from the processing. It is a theoretical line. It results as the boundary of the first surface area 44 to the second surface area 46. The second surface area 46 merges into the first surface area 44 without offset. The line 48 runs around the respective side portion 29, 31 and is as a cross-section transverse to the longitudinal direction of the bracket 24 and at right angles to the paper plane in Fig. 1 and 2 of the respective side section 29, 31 defined.

The first surface area 44 has a matt surface structure. It is made by irradiation with a blasting material, commonly referred to as sandblasting. Grain material with a grain size in the range from 20 microns to 2.4 mm, preferably in the range from 40 microns to 1.2 mm, is used as blasting medium. Possible blasting agents are sand grain, corundum, Broken glass, glass beads, glass beads, stainless steel balls, steel gravel and steel balls. This list is not exhaustive. The second surface area 46 is highly polished, it has a roughness depth less than 5, preferably less than 2 microns. The surface is mirror-smooth. The material for the side sections 29, 30, as well as the middle section 30, come sufficiently mechanically strong alloys with high copper content, in particular 80 to 90 weight percent copper, in addition to stainless steel.

The center section 30 in FIG FIG. 1 is completely implemented with a first surface area 44. Its entire surface is treated by the blasting with abrasive as well as the adjacent first surface areas 44 of the two side portions 29,31. Overall, a symmetrical training is achieved in each case. The plane of symmetry is in the middle of the bracket 24 and perpendicular to the paper plane in the Figures 1 and 2 ,

Based on FIG. 3 the method is explained, with which the different surface areas 44, 46 of the side portions 29, 31 are formed. By means of a cover 50, see also FIG. 4 , the respective side section 29, 31 is encompassed. The later recognizable line 48 is located at the boundary at which the wrapping of the cover 50 ends about the respective side portion 29, 31 and towards the center of the bracket 24. In FIG. 3 For example, the distance of the side wall of the cover member 50 facing the center of the bracket 24 from the ends of the cover members 50 located at the center of the bracket is about 50% of the total length of the side portions 29, 31.

As FIG. 4 shows, the cover 50 has two half parts 51, 52, which are identical. They each have an approximately semicircular recess 54. Are the two half parts 51, 52 assembled, as in FIG. 3 is shown, these recesses 54 sealingly engage around the side portion 29 and 31. In FIG. 4 a side section 31 is shown in cross section, which is encompassed in the assembly of the two holding parts 51, 52.

The contact between the closed cover member 50 and the respective side portion 29, 31 may be such that at the same time also a mechanical Holding or clamping the side sections 29, 31 takes place. By means of a device, not shown, which is known per se, the entire unit of the two cover parts 50 and the side portions 29, 31 (and lateral parts 20, 22, which are not shown) in the direction of the arrow 56 is rotated about an axis, in the paper plane of the FIG. 3 and lies in the longitudinal direction of the bracket 24. Through a nozzle 58 blasting agent 60 is applied to the side portions 29, 31 during the rotation. In training after FIG. 1 The blasting means 60 also reaches only the areas between the two cover parts 50. In this way, the first surface regions 44 are formed.

Before the irradiation, the side sections 29, 31 are highly polished, as is the case in the production according to the prior art. In corresponding high-gloss polish, the side sections 29, 31 are placed on the market in the bits according to the prior art, as offered, for example, by the Applicant. Measured with a surface tester Mitutoyo Surftest 201 results in an RZ value for the average surface roughness of less than 1.5, preferably between 0.5 and 1. By the treatment with the blasting agent 60 all lying between the cover 50 surfaces are roughened and get one matte shimmer or a no longer shiny surface. The irradiated second surface area has a significantly higher roughness RZ, e.g. RZ is 8 and up.

In FIG. 5 two half parts 51, 52 of another embodiment of a cover 50 are shown. It has a substantially cylindrical shape in the assembled state. Due to the additional, semi-cylindrical walls, those areas of the side sections 29, 31 which form the second surface area 46 are better covered than in the embodiment according to FIGS FIGS. 3 and 4 , As a result, the highly polished surface in the second surface region 46 is better preserved. Also, no reflected blasting agent coming from the walls of the blast cabin can reach this surface area.

Irradiation with blasting media 60 can be automatic or manual. It is also possible to use a plurality of jet nozzles 58. It is advantageous, special Use sealing parts (not shown), which are provided on the recess 54 of the half parts 51, 52 and allow a precise seal. For example, here come semi-circular rubber parts into consideration, which rest with lips on the side portions 29 and 31, respectively. They can be replaced if they are destroyed by the blasting medium. By means of these seals, a precise, tight contact of the half-parts 51, 52 with the side sections 29, 31 is achieved.

It is also possible to give the line 48 a desired course, for example zigzag, coiled or the like. The first surface area 44 has a matte finish. It is by irradiation with blasting material, generally also as sandblast

In the execution after FIGS. 2 to 4 is for better representation of the free inner cross section of the hole of each eyelet relatively large compared to the cross section of the ring which forms the eyelet executed so that z. B. also in the longitudinal direction of the side portions 29, 31, the joints 26, have a big game. This makes the presentation easier to understand. In practice, however, the free spaces are smaller. The ring cross-section fills at least half of the eyelet, preferably more, as well as from FIG. 1 is apparent. In a preferred embodiment, the ring cross section is greater than 70% of the free cross section of the eyelet, 80% are also possible, as well as 90%.

In training FIG. 1 the middle section 30 has two mutually parallel joint bores 38, 40. In another embodiment, these joint bores can also be offset by 90 ° from each other. In the illustration after FIG. 1 These two holes have a relatively short distance from each other, it is for example between 2 and 3 cm. As a result, the entire center section 30 is quite short, it is a maximum of 4 cm long, preferably it is at most 3 cm long. It is significantly thickened relative to the adjacent region of the side sections, so that the already mentioned larger cross-sectional dimension in the middle of the bracket 24 is achieved. Symmetrically on both sides reduces the cross-sectional dimension of the bracket 24 in both embodiments, and then increase again in the region of the bore 32 to a thickness which is approximately comparable to the thickness in the middle. The center section 30 is in FIG. 1 executed approximately olive-shaped. It can also be designed differently, for example as a disc, on the side two eyelets axially projecting, as a role, as a rather spherical structure, etc ..

Advantageously, the center section 30 has two bores 38, 40, whose center lines have a distance of less than 2.5 cm, preferably less than 2 cm.

Preferably, the at least one hinge 26, 28 and all other joints 26, 28 are formed as play interlocking eyelets at the end portions of the side portions and the middle portions 30, respectively.

Claims (14)

1. Horse snaffle bit comprising two lateral parts (20, 22) and a shackle (24) disposed between these parts (20, 22), which a) comprises at least one joint (26, 28) and b) has two lateral sections (29, 31), wherein each lateral section (29, 31) has an end distant from the joint (26, 28) and one bore (32), respectively, is formed in this distant end of the lateral sections (29, 31) for the freely mobile accommodation of one of these parts (20, 22), respectively, each lateral section (29, 31) having a first surface region (44) and a second surface region (46), the first surface region (44), starting at the joint (26, 28), extending to a distance of at least 20% and at most 50% of the total length of the lateral section (29, 31) from the joint (26, 28), the second surface region (46) following the first surface region (44) and extending to the distant end of the lateral section (29, 31), characterised in that the first surface region (44) has a matte surface and that the second surface region (46) has a highly lustrous surface.
2. Horse snaffle bit according to claim 1, characterised in that the first surface region (44) and the second surface region (46) differ only with regard to the condition of the surface.
3. Horse snaffle bit according to claim 1, characterised in that the first surface region (44) and the second surface region (46) merge Into one another without any offset.
4. Horse snaffle bit according to claim 1, characterised in that the first surface region (44) and the second surface region (46) adjoin each other along a line (48) and that this line (48) is a regular line (48), preferably a line (48) which, as far as possible, approximates a circle.
5. Horse snaffle bit according to claim 1, characterised in that the shackle (24) has a central section (30), that the central section (30) has a matte surface and that the central section (30) comprises two joint bores (38, 40) parallel to each other.
6. Horse snaffle bit according to claim 5, characterised in that the central section (30) has a maximum length of 4 cm.
7. Horse snaffle bit according to claim 5, characterised in that the joint bores (38, 40) have a distance from each other of less than 2.5 cm.
8. Horse snaffle bit according to claim 1, characterised in that each lateral section (29, 31) is respectively made from a single material and Is preferably a single-piece part.
9. Horse snaffle bit according to claim 5, characterised in that the central section (30) is respectively made from a single material and is preferably a single-piece part.
10. Horse snaffle bit according to claim 1 characterised in that the second surface region (46) is highly polished.
11. Method for producing a horse snaffle bit according to claim 1, characterised in that a lateral section (29,31) having a highly polished surface is covered with a covering part (50) in such a way that, starting from the distant end of the lateral section (29, 31), at least 50% and at most 80% of the total length of the lateral section (29, 31) is covered, the rest remains uncovered, and the rest is blasted with a blasting medium (60) having a grain size of at least 20 micrometres and at most 2.4 millimetres, preferably in the range of between 40 micrometres and 1.2 millimetres.
12. Method for producing a horse snaffle bit according to claim 1, characterised in that a finished horse snaffle bit is used which has two lateral sections (29, 31) and optionally a central section (30), that the two lateral sections (29,31) having a highly polished surface are each covered with a covering part (50), respectively, in such a way that, starting from the distant end of the lateral section (29, 31), at least 50% and at most 80% of the total length of the lateral section (29, 31) is covered, the rest located between the covering parts (50) remains uncovered, and this rest Is blasted with a blasting medium (60) having a grain size of at least 20 micrometres and at most 2.4 millimetres, preferably in the range of between 40 micrometres and 1.2 millimetres.
13. Method for producing a horse snaffle bit according to claim 11 or 12, characterised in that the lateral section (29, 31) or the horse snaffle bit is rotated during blasting (56).
14. method for producing a horse snaffle bit according to claim 11 or 13, characterised in that the covering part (50) touches the lateral section (29, 31) in the region of the line (48).

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