MXPA06005313A - Anchoring drill bit, system and method of anchoring - Google Patents

Abstract

A system, apparatuses and methods for anchoring are provided. The system includes two-stage drill bit and a method of anchoring into a two-stage hole drilled by the drill bit. The apparatus of the instant invention includes a two-stage drill bit for drilling a pilot hole for a common nail into a material such as concrete, stone, masonry or cementuous or other materials. The method of the instant invention includes the steps of drilling a first hole within a material to which an object is to be anchored, drilling a second hole concentric with the first hole, and placing an anchor within the holes.

Description

STRENGTHENING OF PERFORATION BARRIER, SYSTEM AND METHOD OF ASSEMBLY The present invention relates generally to systems, apparatus and methods of fixation. More particularly, the present invention relates to two-phase drills and a method for fixing within brittle materials such as concrete, stone, masonry and cementitious materials using a common nail. In construction applications it is often necessary or desirable to fix within an existing concrete structure. In such permanent fixing applications, the removal of fixings' is usually a concern. Thus, the removal of such permanent concrete fixings will undoubtedly result in damage to the concrete surface. There are currently a number of applications in construction where it is desirable to provide a fixation within an existing concrete structure that can be removed, an example of such application being present in the commercial construction business in which it is often used. the construction of sloping walls. In the construction of inclined walls, the formwork is usually fixed inside an existing concrete floor in the form of a wall; A release agent is applied to the floor and formwork and the concrete mix is poured into the formwork. When the concrete has hardened, the formwork is removed and the wall is lifted off the floor and placed straight using a crane. There are currently a number of "removable" fastening systems for use with concrete. The most common of such systems includes either a nail or a screw, and both require pre-drilling in a guide hole. When a standard nail is used, such as a common nail 8, an 8 duplex, 16 common, 16 duplex or the like, the guide hole is usually drilled to be a diameter slightly smaller than the diameter of the nail to provide an adjustment Narrow friction between the nail and the concrete when the nail is inserted into the hole. A common problem with such applications is that the concrete surface is usually damaged when the nail is removed from the concrete. The most common type of damage to the surface of the concrete is called peeling, which is caused when the surface of the concrete that surrounds the guide hole is pulled up by friction with the nail as the nail is pulled up and it comes off leaving an indentation or depression in the surface of the concrete. When the diameter of the guide hole is slightly smaller than the diameter of the nail, dehusking usually occurs around the entire circumference of the guide hole. Dehusking on a concrete surface is undesirable since it creates an unattractive surface and patching a peeling surface is difficult since the patch will usually come off. In an attempt to reduce or eliminate peeling, many contractors will drill a guide hole that has a diameter slightly larger than the diameter of the nail being used. Because the diameter of the hole is larger than the diameter of the nail, it is then necessary to insert a softer material (than the nail and concrete), such as a lawn trimmer cord or a cable into the hole to provide the adjustment between pieces between the nail and the concrete. The insertion of the softer material consumes an extremely long time and requires that the contractor have an ample supply of the material at hand. In addition, peeling often continues when the nail is removed, since the softer material is usually located on one side of the nail and the opposite side is pressed against the concrete. When the nail is removed, peeling occurs on the side of the concrete against which the nail is pressed. In some cases, contractors will use a specially designed nail that includes a section of the nail rod near the end of the nail projecting outward. The outward protrusion provides frictional contact between the nail and the wall of the guide hole and works by much in the same manner as the softer material described above. Such specially designed nails are extremely expensive when compared to standard nails, and also result in the same peeling on a side discussed above. As an alternative to nails, many contractors now use a fastener for the screw when a removable fastener is desired. An example of a screw fixing system is currently marketed by the company "Tapcon". This system includes a drill bit, a hexagonal screwdriver (or Phillips) and a sleeve, and a screw. In operation, a contractor will drill a guide hole with a drill that is smaller than a screw diameter. The contractor then slides the sleeve over the drill bit so that the hexagonal screwdriver is driven by the drill. The contractor then uses the screwdriver to drive the screw into the guide hole. When it is desired to remove the screw, the contractor inverts the screwdriver. While this system reduces peeling for the surface of the concrete when the screw can be reversed out of the guide hole, some peeling still often occurs when the screw is reversed, and a number of other disadvantages exist. The screws are relatively expensive (approximately Eü $ 0.18 each) when compared to the cost of the standard nails (less than EUD $ 0.01 each). The wear on the contractor's drill is significant as it is used not only to drill the pilot hole, which requires very little torque, but also to screw and unscrew the screw, which requires considerable torque. The time requirement for screwing and unscrewing the screws is significant. In addition, the heads of the screws are often swept away, making it impossible to unscrew the screws and resulting in a substantial peeling of the concrete surface when the screw must be forcefully removed from the concrete. Therefore, it would be beneficial to provide a low cost concrete fixing system that can be removed without resulting in a peeling of the concrete surface. An object of the present invention is to provide a system, apparatus and methods for fastening, particularly in materials that are relatively brittle under tension, such as concrete, stone, masonry and cementitious materials. Another object of the present invention is to provide a system, apparatus and methods for fixing that are low in cost. Another object of the present invention is to provide a system, apparatus and methods for fastening, particularly within concrete and other "brittle" materials, that can be removed without causing peeling of the surface. The objects of the present invention are achieved through the use of a two-phase masonry drill. The drill includes two masonry cutting surfaces / phases that have two different cote diameters. The first cutting surface is located at the outer end of the drill and has a first diameter. The second cutting surface is located along the bit heel at a distance away from the end and has a second diameter that is larger than the first diameter. In operation, the bit is inserted into a hole and the end of the bit is pressed against the surface of the material to be drilled (eg, a concrete floor). The first cutting surface will cut a hole having a first diameter '. When the drill bit cuts through the material the second cutting surface will advance and finally expand a portion of the hole for a second diameter. When the drill is removed, a hole is left in the material that has two concentric diameters. A narrower first diameter will extend into the material to a depth at which the end of the bit is inserted. The second, a larger diameter will extend from the surface down to a depth at which the second cutting surface was introduced.

In a preferred embodiment of the present invention, a depth gauge is located in the drill bead at a distance away from the second cutting surface in a direction opposite to the first cutting surface. The depth gauge can be fixed or repositioned or adjustable. In one embodiment, the depth gauge is a member projecting from the bit heel to prevent the bit from advancing into the hole once the gauge makes contact with the surface of the material being drilled. The preferred embodiment of the system and the methods of attachment of the present invention utilize a two-phase drill discussed above. In the method of the present invention, the object to be fixed, such as a wooden formwork, a loom or the like, is placed on a concrete surface. A first hole is then drilled through the formwork and into the concrete to a first depth, a second hole of a diameter larger than the diameter of the first hole, and having the same mean point as that of the first hole, is drilled in a second depth that is less than that of the first depth (although the first and second terms are used to describe the holes of the present invention, it will be appreciated that the order of drilling the holes of the present invention can be reversed without departing from the scope of the invention, however it can be seen that by drilling a narrower first hole, the widest hole can be automatically centered). A standard nail is then inserted through the hole in the formwork being fixed and into the hole in the concrete. The diameter of the first hole is slightly smaller than, equal to or slightly smaller than, equal to or slightly larger than the diameter of the nail rod to provide a desired friction fit between the nail and the concrete. The diameter of the second hole is larger than the diameter of the nail rod, so that a relief is provided between the surface of the nail rod and the circumference of the second hole of the concrete surface. The diameter of the second hole is smaller than the diameter of the nail head in order to prevent the head of the nail from getting into the hole drilled in the formwork. The depth of the second hole can be varied to provide the desired amount of frictional force for the nail when it is located in the hole. Increasing the depth of the second hole increases the size of the relief, reducing the frictional force in the nail. Alternatively, decreasing the depth of the second hole decreases the size of the relief, increasing the frictional force on the nail. When you want to remove the formwork, the nail is removed with a hammer or with a goat foot lever. Because the stud shank never makes contact with the circumference of the second hole, which extends to the surface of the concrete, no peeling will occur. The holes can easily be filled with a concrete patch. In some cases, the clean edges of the holes do not need to be patched, since the clean edges do not result in an unattractive surface. The present invention results in significant time savings over the prior art fastening systems. In the present invention, all that is required to install and fix is the drilling of a second two-phase guide hole and driving a standard nail into the hole. This results in substantial time savings over prior art systems that require separate insertion of a softer material into the hole and onto systems that require a fastener to be screwed into the concrete. The removal, demolition or fixations of the present invention, which requires only the use of a goat foot lever, provide significant time savings over the removal of other prior art screw fixings, and eliminates peeling sometimes caused by screw fixation and almost always by fastening systems of cZ-avo of the previous technique. In addition to significant time savings for both installation and demolition of fixations, the present invention also results in substantial cost savings and convenience. The present invention uses standard nails that have already been purchased in bulk and at low cost by most contractors. Contractors do not need to buy any special tools, apart from the inventive drill, to install and remove the fixings; instead the contractor simply uses a hammer and / or a common goat foot lever. In addition, the life of the contractor's drill will increase significantly since it is not being used to screw and unscrew screws with a high torque. The foregoing and other objects are intended to be illustrative of the invention and does not mean that they limit it in any way. Many possible embodiments of the invention can be made and will be readily apparent when a study is made of the following description and the accompanying drawings that comprise a portion thereof. Various features and subcombinations of the invention may be employed if reference is made to other characteristics or subcombinations. Other objects and advantages of this invention will be apparent from the following description taken in conjunction with the accompanying drawings, wherein an embodiment of this invention and various characteristics thereof are set forth by way of illustration and example. BRIEF DESCRIPTION OF THE DRAWINGS A preferred embodiment of the invention, which illustrates the best mode in which the applicant has contemplated applying the principles, is established in the following description and is shown in the drawings and is pointed out particularly and distinctly and is established in the appended claims. Figure 1 is a front sectional view of one embodiment of a two-phase drill of the present invention. Figure 2 is a front sectional view of an alternate embodiment of a two-phase drill of the present invention. Figure 3 is a front section view of a nail that is fixed to a 2 x 4 formwork for a concrete surface through the use of the method of the present invention. Figure 4 shows a front sectional view of an alternative embodiment of a nail that attaches a 2x4 formwork to a concrete surface through the use of the method of the present invention. Figures 5a, 5b, 5c, 5c (i), 5c (ii), 5d, 5d (i) and 5d (ii) show various views of another alternative embodiment of the two phase drill bit and the corresponding cutter heads of the present invention.

Figures 6a, 6b, 6c, 6c (i), 6c (ii), 6d and 6d (i) show various views of another alternative embodiment of a two phase drill bit and the corresponding cutter heads of the present invention. Figures 7a, 7b, 7c, 7c (i), 7c (ii), 7 d, 7d (i) and 7d (ii) show various views of another alternative embodiment of the two phase drill bit and the corresponding cutter heads of the present invention. Figures 8a, 8b, 8b (i), '8c and 8c (i) show various views of another alternative embodiment of a drill bit, two phases and the corresponding cutter heads of the present invention. Figure 9 shows a top section view of an embodiment of the cutter head of the second phase for a two-phase drill of the present invention. Figure 10 shows a top section view of another embodiment of the cutter head of the second phase of a two phase drill of the present invention as required, the period mode of the present invention is described herein. However, it should be understood that the described mode is simply exemplary of the principles of the invention, which may be represented in various ways. Therefore, the specific structural and functional details described herein should not be construed as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art the various uses of the present invention. in virtually any appropriately detailed structure. Referring to Figure 1, a front sectional view of a two-stage drill embodiment of the present invention is shown in which the drill 10 includes a shank / shaft 20, a first phase cutter head 30 in the shaft 20, a second phase cutter head 40 on the shaft 20 separated from the first phase cutter head 30, and a depth gauge 50 on the shaft 20, spaced apart from the second phase cutter head 40 in a direction opposite the first cutter head 30. of phase. As shown in Figure 1, the cutter 30 of the first stage has a first cutting diameter that is smaller than the second cutting diameter of the cutter 30 of the second stage. In the embodiment of the drill 10 shown in Figure 1, the shaft 20 increases its diameter in the cutter 30 of the second stage so that the flutes 62 have a larger diameter than that of the flutes 60. In Figure 2 shows a front section view of an alternative embodiment of a two-phase drill bit of the present invention in which the shaft 20 of the drill 10 has a single diameter through the entire length of the drill 10. As shown in FIG. Figure 2, the cutting head 40 of the second phase projects from the shaft 20, and the grooves 62 and 64 have identical diameters. Figures 3 and 4 show various front section views of a nail that anchors a 2x4 formwork to a concrete surface through the use of the method of the present invention. As shown in Figures 3 and 4, the hole 130 of the first phase is drilled in a material (such as a concrete slab 100) at a first depth. The hole 140 of the second phase is then drilled at a second depth which is less than the depth of the hole of the first phase. The hole 140 of the second phase is drilled concentric with the hole 130 of the first phase so that the nail 110 will not contact any material surrounding the circumference of the hole 140 of the second phase when the nail 110 is placed in the hole. 130 of the first phase. The diameter of the first hole 130 is slightly smaller than the diameter of the stud of the nail 110 to provide a desired frictional fit between the nail and the concrete. The diameter of the second hole 140 is larger than the diameter of the rod of the nail 110, so that a relief is provided between the surface of the rod of the nail and the circumference of the second hole in the surface of the concrete. In Figure 3 the diameter of the second hole 140 is larger than the diameter of the head 112 of the nail so that the nail head could be inserted into the second hole 140 if no further care is provided. In the modality shown in Figure 3, a c110 is inserted either through a formwork 120 without cutting a guide hole, or a guide hole is drilled through the formwork 120 with a bit different from that which would be used to drill the second hole 140. When using the present invention to fix objects such as wood formwork to a material, it is common to use multiple fixings in a single object. As such, it is inconvenient to first drill holes in the material in which the object is to be mounted, and then drill a hole through the object that is being assembled. In addition, it is difficult to align a nail on the surface of the object (ie, a 2x4 formwork) and insert the nail through that object and into the hole on the opposite side of the object. Thus, it is preferred to drill a hole through the object and through the material for which the object is being fixed all at the same time. Therefore, as shown in Figure 4, in a preferred embodiment of the present invention, the diameter of the second hole 140 is smaller than the diameter of the head 112 of the nail 110 so that the head of the nail is prevented from goal within the hole drilled in the formwork while drilling the second and / or the first hole 130 and 140. The depth of the second hole 140 in Figures 3 and 4 can be varied to provide the desired amount of frictional force for the surface of the nail 110 when it is located in the first hole 130. By increasing the depth of the second hole 140 the size of the relief is increased, reducing the length of the nail 110 that can be introduced into the first hole 130 and thereby decreasing the frictional force on the surface of the nail 110. Alternatively, decreasing the depth of the second hole 140 decreases the size of the relief, increasing the length of the nail 110 which can enter into the first hole 130 and thereby increase the frictional force on the surface of the nail 110. In the present invention, when it is desired to remove the nail 110 from the formwork 120 it is removed with a hammer or a loading foot lever. Because the rod of the pin 110 never contacts the circumference of the second hole 140, which extends to the concrete surface 100, no peeling will occur. The holes can easily be filled with concrete patch. In some cases, it is not even necessary to patch the clean edges, since the clean edges do not result in an unattractive surface. The depth of the first orifice 130 is sufficient to at least allow the tip of the nail 110 to enter through the formwork 2x4 and through the hole 130 of the first phase without touching the bottom in the concrete 100. The depth of the hole 140 of the second phase is sufficient to allow the nail 110 to be placed in the hole and removed from the hole without resulting in a dehulling around the surface of the hole when the nail is removed, even less than the length of the nail shaft 110 so that it allows the nail 110 to penetrate into the hole 130 of the first phase. The depth of the hole 140 of the second phase in the concrete 100 can be increased or decreased respectively to decrease or increase the frictional force between the nail 110 and the concrete 100. It will be appreciated that the two-phase drill 10 previously described with respect to the Figures 1 and 2, as well as those described below with respect to Figures 5-10, are ideal for use in the method of the present invention. However, it will be appreciated that multiple single-phase drills could be used without departing from the scope of the method of the invention. In addition, it will be appreciated that the order of drilling the holes of the present invention can be reversed without departing from the scope of the invention. However, when first drilling the narrowest and deepest hole (hole 130 of the first façade), provides a different advantage than the center automatically the widest and shallowest hole (hole 140 of the second phase). In a preferred embodiment of the two-phase drill 10 of the present invention which is intended to be used with a duplex nail 16, the cutter head 30 of the first stage includes a cut-off diameter of 0.396 cm. (0.156 in.) To cut the hole 130 of the first phase in a diameter of 0.396 cm (0.156 in.), And the cutter head 40 of the second phase includes a cut diameter of 0.432 cm. (0.170 in.) To cut the hole 140 of the second phase in a diameter of 0.432 cm. (0.170 in.). Since the diameter of the rod of a duplex nail 16 is approximately 0.422 cm. (0.166 in.) In diameter, the nail 110 will remain frictionally in contact with the concrete 100 in the hole 140 of the first phase and will not be in contact with the concrete 100 in the orifice 140 of the second phase. of this embodiment has a length of about twelve point seven centimeters (five inches) The length between the tip of the cutting head 30 of the first phase and the cutting head 40 of the second phase is approximately 1 and 3/8 of an inch, and the length between the tip of the cutter head 40 of the second stage and the depth gauge 50 is about 2 and 3/8 of an inch.This leaves about 1 and inches on the top of the shaft 20 so that a mandrel of the drill appreciate the shaft without interfering with the depth gauge 50. In addition, the length between the cutter head 30 of the first stage and the depth gauge 50 provides a total depth of cut of 3 and inch, which l allows an additional clearance of H throughout the bottom of hole 130 of the first phase to allow a common nail, which will have a longer penetration length than a duplex nail (approximately 7.62 cm. (3 in.) Depth of penetration from head to tip for a duplex 16), to be used without requiring any depth adjustment. Figures 5-7 show various views of the two-stage drill modes in which a cutter head 40 of the second stage is placed inside the slot 22 which is machined through the shaft 20 of the drill 10. At each one of Figures 5-7 the reference similar to a figure (ie, 5a, 6a, etc.) are intended to refer to corresponding views of each modality. Figures 5a, 6a, and 7a show front views of the drill 10 facing the surface of the cutter head 40 of the second stage and showing the slit 24 for the cutter head 30 of the first stage. Figures 5b, 6b and 7b show front views of the drill 10 rotated 90 degrees from the orientation of Figures 5a, 6a and 7a to 'show the groove 22 for the cutter head 40 of the second stage and looking at the surface of the head 30 cutter of the first phase. The groove 22 and the groove 24 are both machined in the shaft 20 of the drill, and the cutter heads 30 and 40 are respectively positioned in the groove 24 and the groove 22 and firmly secured or welded to the shaft 20. In a preferred embodiment of the invention which is intended to be used with a duplex 16 or a common nail 16, the depth gauge 50 is a 3/64 inch thick washer having an outer diameter of 3/8 inch and an inner diameter of 0.343 cm. (0.135 in.) Which is firmly secured or welded to the shaft 20 having an outer diameter of 0.343 cm. (0.135 in.). Figures 5c, 6c and 7c show the surface of an embodiment of a cutter head 30 of the present invention, which is similar to the prior art cutter heads having a tapered cutting edge. Figures 5c (i), 6c (i) and 7c (i) show plan views of the tip of the cutter head 30 of Figures 5c, 6c and 7c of Figures 5c (ii), 6c (ii) and 7c ( ii) shown in elevation views on the side of the cutter head 30 of Figures 5c, 6c and 7c. In a preferred embodiment, the cutter head 30 has a height and a width of 0.396 cm. (0.156 in.) Each. The cutter head 30 tapers down from the center tip 32 to an angle of 30 degrees and includes oppositely tapered cutting edges 34 and 36. Figures 5d, 6d and 7d show the surface of various embodiments of the cutting heads 40 of the second phase of the present invention. In Figure 5d, the cutter head 40 includes two partially tapered edges or angled corners 42 and 44 that are oppositely angled to the tapered cut faces 48 and 46 respectively (shown in Figures 5d (i) and 5d (ii)). In Figure 6d, the cutter head 40 includes two partially tapered edges or angled corners 42 and 44 that include non-tapered cutting faces 48 and 46 (shown in Figures 6d (i) and 6d (ii)). In Figure 7d, the cutter head 40 includes two edges 42 and 44 that taper down from a central point in the same manner as described with the cutter head 30 of Figures 5 and 7. Figures 8a, 8b, 8b (i), 8c and 8c (i) show various views of one embodiment of a two-phase drill bit of the present invention in which the cutter head 40 of the second stage is joined as two wings to the shaft 20 of the drill 10, and in which notched is included in the shaft 20. Figure 8a shows a front elevational view of a drill 10 showing the surfaces of the cutting heads 30 and 40. Figures 8b (i) and 8b (ii) show top and front views of the cutter head 30 respectively. As shown in Figures 8b (i) and 8b (ii) the cutter head 30 is generally triangular in shape and includes double taper faces 32 and 34. The cutting head 40 is formed of two separate wings that are firmly secured or welded to the shaft 20. Figures 8c (i) and 8c (ii) show top and front views respectively of one of the wings of the cutting head 40. Each wing of the cutter head 40 includes a tapered front tip 41 and two tapered upper faces 42 and 44. Figure 9 shows a top section view of an embodiment of the cutter head 40 of the second phase for a two-phase drill of the present invention that includes two separate wings as described above with respect to Figure 8. As shown in FIG. Figure 9, each of the wings is placed within a groove or slot 22 that is partially machined in the shaft 20 so that the wings of the cutting head 40 each project generally radially from the shaft 20. Figure 10 shows a alternative embodiment in which each of the wings of the cutting head 40 projects in a direction generally tangent to the shaft 20. The embodiment shown in Figure 10 requires less penetration of the groove 22 within the shaft 20, resulting in increased strength in the shaft 20 over the embodiment shown in Figure 9. In the preferred embodiments of the inventive drill 10 shown in Figures 5-8, the depth gauge 50 is an annular ring or washer that is permanently secured firmly or secured to the shaft 20. However, alternative embodiments of the depth gauge 50 can be adjustably attached to the shaft '20 to allow a single torque bit to be used to nails' of a variety of lengths, or to allow the user to increase or decrease the depth of the orifice 140 of the second phase to achieve a desired frictional force or for a variety of materials the levels of friction may vary. In addition, the adjustable depth gauge will allow a wider variety of objects, such as formwork, looms, etc. which will be fixed by a single bit, since such diverse objects will come in a variety of thicknesses. In one embodiment, an adjustable depth gauge is a ring that includes an adjustment screw to hold the gauge to the drill shaft. In alternative embodiments, the depth gauge is a part of the drill fastener, such as a drill chuck or an intermediate component between the chuck and the drill. In such an embodiment, the drill includes left-handed male threads that screw into the left-handed female threads of the fastener. In a preferred embodiment of the present invention the two-phase drill bit is a masonry drill in which the cutter head 30 of the first stage and the cutter head 40 of the second stage are both designed to cut materials such as concrete, stone , masonry and cementitious materials. The present invention is ideal for use in such "brittle" (under tension) materials, which are normally shelled on the surface when the prior art fasteners are removed. However, it will be appreciated that the drill of the present invention, as well as the method for fixing of the present invention, can be used with any material in which a fixation is desired, and therefore not limited to drill bits and cutter heads for masonry. Furthermore, although the present invention is discussed in connection with the attachment to different generally horizontal materials, it will be appreciated that fastening to materials in any orientation, whether horizontal, vertical or otherwise, can be achieved without departing from the spirit and scope of the invention. the invention. Further, although the method of the preferred embodiment is discussed in connection with a fastener which is a nail having a generally continuous stem diameter, other fasteners, such as screws, may be employed without departing from the scope of the invention. It will be appreciated that any of the embodiments of the drill 10 described herein may be used in any combination of components from other embodiments. For example, the embodiment of the drill 10 and the corresponding cutter head arrangement described in Figure 8 of the present invention could include a flute such as that described in Figures 1-2 and 5-7. In addition, the specific type of flute may vary without departing from the present invention. As an additional example, the cutting edge of the second cutter head 40 shown in any of Figures 5-7 can be used in connection with the second wing style cutter heads 40 described in Figures 8-10. In a preferred embodiment, the shaft 20 of the drill of the present invention is made of a high speed steel, grade M2 or equivalent, and the cutter heads 30 and 40 are made of tungsten carbide, MINE grade or equivalent and are firmly adhered or secured to the 20. However, the drill / cutter heads of the present invention may be made of any material and manufactured in any manner currently known to the drills or to be discovered hereinafter, and may be non-percussive, impregnated with diamond, or any other type of drill. In the previous description, certain terms have been used for brevity, clarity or compression; although limitations will not necessarily be implied from it beyond the requirements of the prior art, because those terms are used for descriptive purposes and are intended to be interpreted more widely. Still further, the description and illustration of the inventions is by way of example, and scope of the inventions is not limited to the exact details shown or described. Although the above detailed description of the present invention has been described with reference to an exemplary embodiment, and the best mode contemplated for practicing the present invention has been shown and described, it will be understood that certain changes, modifications or variations in the representation of the foregoing invention, and the interpretation thereof, other than that specifically set forth herein, and that can be achieved by those having prior art experience without departing from the spirit and scope of the invention, and that such changes , modifications or variations should be considered to be within the overall scope of the present invention. Therefore, it is contemplated to cover the present invention and any and all changes, modifications and variations or equivalents that fall within the true spirit and scope of the principles that have already been described and claimed herein. Accordingly, the scope of the present invention is intended to be limited only by the appended claims, whose subject matter as a whole contained in the foregoing description is shown in the accompanying drawings which will be construed as illustrative and not as in a limiting sense.

Having now described the features, discoveries and principles of the invention, the manner in which the invention is constructed and used, the construction features and its advantages, new and useful results have now been obtained; the new and useful structures, devices, elements, arrangements, parts and combinations are set forth in the appended claims. It should also be understood that the following claims are intended to cover all the generic and specific features of the invention described herein, and all statements of the scope of the invention which, in the manner of a language, could be said to fall within them.

Claims (33)

1. CLAIMS 1. A drill to make a hole for a fixation, the drill characterized in that it comprises: a first cutter head that includes a first diameter of the size to provide a frictional contact between the fixation and a circumference of a hole made by the first cutting head; and a second cutter head separate from the first cutter head, the second cutter head includes a second diameter larger than the first size diameter to provide a relief between the fastener and a circumference of an orifice made by the second cutter head.
2. 2. The drill bit according to claim 1, characterized in that the fixation is a nail.
3. 3. The drill bit according to claim 1, characterized in that the first diameter is generally less than or equal to the diameter of the rod of the fixture and the second diameter is generally greater than the second diameter of the rod of the fixture.
4. The drill bit according to claim 1, characterized in that the second diameter is generally smaller than the diameter of the head of the fixation.
5. 5. The drill bit according to claim 1, characterized in that it further comprises a depth gauge separated from the second cutter head opposite the first cutter head.
6. 6. The drill according to claim 5, characterized in that the depth gauge comprises an annular flange permanently connected to a drill shaft.
7. 7. The drill according to claim 5, characterized in that the depth gauge comprises a fastener for the drill.
8. The drill according to claim 5, characterized in that the depth gauge is connected to the drill shaft in an adjustable manner.
9. The drill bit according to claim 5, characterized in that a length between the depth gauge and the first cutter head is equal to or greater than a length of the fastener.
10. The drill bit according to claim 9, characterized in that the length between the depth gauge and the first cutter head is greater than the length of the fastener.
11. The drill bit according to claim 5, characterized in that a length between the depth gauge and the second cutter head is less than the length of the fastener.
12. The drill bit according to claim 11, characterized in that the length between the depth gauge and the second cutter head is selected to provide a desired amount of frictional force for the fixture when it is located in the hole.
13. 13. A drill to fix a nail having a generally contiguous rod diameter, the drill characterized in that it comprises: a first cutter head including a first diameter of the size to provide a frictional contact between the nail rod and a circumference of an orifice made by the first cutter head; and a second cutter head separate from the first cutter head, the second cutter head includes a second diameter larger than the first size diameter to provide a relief between the nail rod and a circumference of an orifice made by the second cutter head.
14. The drill bit according to claim 13, characterized in that the first diameter is generally less than or equal to the diameter of the rod of the nail and the second diameter is generally greater than the diameter of the rod of the nail.
15. The drill according to claim 13, characterized in that the nail comprises a duplex nail 16 or a common nail 16 which includes a rod diameter of approximately 0.422 cm. (0166 in.), Where the first diameter is approximately 0.396 cm. (0.156 in.), And where the second diameter is approximately 0.432 cm. (0.170 in.).
16. 16. A drill to make a hole in a fixation for a fixation, the drill characterized in that it comprises: a first cutter head including a first diameter; a second cutter head separate from the first cutter head, the second cutter head includes a second diameter larger than the first diameter and is smaller than a diameter of a head of the fastener; and a depth gauge separate from the second cutter head.
17. 17. The drill in accordance with the claim 16, characterized in that the depth gauge comprises an annular flange permanently connected to the shaft of the bit.
18. 18. The drill in accordance with the claim 16, characterized in that the depth gauge comprises a fastener for the bit.
19. 19. The drill bit in accordance with the claim 16, characterized in that a length between the depth gauge and the first cutter head is equal to or greater than a length of the fastener.
20. 20. The drill according to claim 19, characterized in that the length between the depth gauge and the first cutter head is greater than the length of the fastener.
21. 21. The drill according to claim 16, characterized in that a length between a depth gauge and the second cutter head is less than a length of the fastener.
22. 22. The drill in accordance with the claim 21, characterized in that the length between the depth gauge and the second cutter head is selected to provide a desired amount of frictional force for the fixation when it is located in the hole.
23. 23. A method for fixing characterized in that it comprises the steps of: cutting an orifice including a first diameter in a material for a first depth; cutting an orifice including a second diameter generally concentric with the first diameter of the orifice in the material for a second depth; and place a nail rod inside the first and the second diameters of the holes.
24. 24. The method according to claim 23, characterized in that it further comprises the step of introducing the nail through an object to be fixed to the material prior to the step of placing the rod-the nail.
25. The method according to claim 24, characterized in that the step of introducing the nail through the object includes the step of inserting the rod of the nail through a pre-drilled hole in the object.
26. 26. The method according to claim 25, characterized in that the hole pre-drilled in * the object is made during the steps of cutting the first and second diameters of the hole in the material.
27. 27. The method according to claim 23, characterized in that the first diameter is smaller than the second diameter.
28. 28. The method of compliance with the claim 27, characterized in that the first diameter is less than or equal to the diameter of the rod of the nail.
29. 29. The method according to claim 27, characterized in that the second diameter is greater than a diameter of the rod of the nail.
30. 30. The method according to claim 23, characterized in that the first depth is greater than or equal to the length of the rod of the nail.
31. 31. The method according to claim 23, characterized in that the second depth is less than the length of the rod of the nail.
32. 32. The method according to claim 23, characterized in that the steps of cutting the first and second diameters of the hole is carried out by means of a single two-phase drill.
33. 33. A method for removably fixing characterized in that it comprises the steps of: cutting an orifice including a first diameter in a material for a first depth, the first diameter being generally less than or equal to the diameter of a fixation; cutting a hole including a second diameter generally concentric with the first diameter of the hole in the material for a second depth, the second diameter is generally greater than the diameter of the fixation; placing a fixture within the first and second diameters of the hole so that the fixture is in a frictional engagement with the material in a circumference of the first diameter of the hole; and removing the fixation of the first and second diameters of the hole when the fixation is no longer needed.