MXPA97008763A - Tool to remove elements of sujec - Google Patents

Abstract

The present invention relates to a tool for removing a fastener of the type having a head on an asparagus, the tool comprises: means for supporting a sleeve in such a way that it is capable of imparting a torque through the rotational movement of the sleeve in relation to the head of the fastener, a sleeve comprising a first portion and a second portion, with the second portion including a means for adjustably holding the head of the fastener, and wherein the sleeve portions are independently adjustable from one another to the other.

Description

TOOL FOR REMOVING FIXING ELEMENTS Field of the Invention The present invention relates in general to tools for removing fasteners and, more particularly, to a tool for removing a unidirectional fastening element, of the type of safety fastening elements. . BACKGROUND OF THE INVENTION [0002] Safety restraint elements that are idle or imprudent or vandal-proof are well known. These fastening elements usually have tamper-proof screw heads, wherein the screw heads are adapted to be screwed in the clockwise direction using a conventional flat head screwdriver, and are typically adapted to remain in a fully installed state from which they can not be removed or removed again by using the flat head of the conventional screwdriver if it is to operate in the opposite direction to that of the clockwise. However, it is occasionally necessary for safety personnel to remove or remove the safety restraint elements. As regards the typical screws of the type of security screws, they have a generally circular head with flat and convex portions on the upper surface. Although such a type of safety fastener can be installed with a conventional screwdriver, there is a need for a special tool to remove or remove it. Over the years a variety of different tools have been proposed that could achieve this particular goal. Among the various proposals are the tools of the U.S. patent. No. 2,103,944 to Gullborg; of the U.S. patent No. 4,800,787 to Cerny; and of the U.S. patent. No. 4,429,599 to LaSante, Sr. Unfortunately, each of these tools requires a specially designed fastening element, which does not make them very desirable for their application in the case of existing fasteners. More specifically, there is a natural reluctance to use any of the tools suggested in these prior patents. Not only are they not suitable for removing or removing existing types of safety fasteners, but, and this is equally important, they would require a considerable investment of capital because it would be necessary to manufacture and market specially designed screws. It is obvious that the patent '944 of Gullborg, the patent' 787 of Cerny and the patent '599 of LaSante, Sr. have not satisfied the need for a single tool to remove or remove safety fastening elements. More recently, a significant advance was made in tools for removing or removing security fastening elements, which was disclosed and claimed in the U.S. patent. No. 5,450,776 to Kozak. However, the need for greater additional flexibility and, in particular, for the axial and radial adjustability of the tool components remains. In addition, the need for a tool to remove or remove fasteners that is of a completely adequate type to remove or remove any form of head-on-stud attachment element is still in effect. The present invention aims to overcome one or more of the problems listed above, and achieve one or more of the resulting objects. SUMMARY OF THE INVENTION Therefore, a main object of the present invention is to provide a unique improved removal tool to be used in the removal of a fastener of the type having a head on an asparagus. It is also an object of the present invention to provide a tool for removing or removing the most commonly used safety fasteners and, specifically, unidirectional fasteners of the type whose use is widely disseminated., to provide an easy removal of the fasteners installed that of this particular type that are currently in stock. It is a further object of the present invention to provide a tool for removing or removing a fastener having on its head a pair of both portions, both flat and convex. In accordance with the above, the present invention relates to a tool for removing or removing a fastener of the type having a head on a stud, in which the tool includes means for supporting a nozzle. The nozzle support means supports the nozzle in such a way that it can impart torque through the rotational movement of the nozzle with respect to the head of the fastener element. Additionally, the tool includes means for positioning the nozzle in the nozzle holder means in an adjustable manner, and the nozzle includes means for gripping the head of the fastener element in an adjustable manner. In the exemplary embodiment, the nozzle holder means preferably includes an elongate rod, and the nozzle positioning means includes a first portion of the nozzle. The elongated rod advantageously has an end for coupling to the head of the fastening element, which end includes a pair of tips for coupling the fastening element. Further, in the exemplary embodiment, the means for gripping the fastener preferably includes a second portion of the nozzle axially spaced from the first portion of the nozzle, such that it may be close to the end of the rod that engages with the head. As for the other details of the exemplary embodiment, the second portion of the nozzle conveniently includes a plurality of teeth about an internal surface, to be nailed biting into the head of the fastening element. With this arrangement or arrangement, the first portion of the nozzle preferably has a tightening collar with a right-hand thread, and the second portion of the nozzle preferably has a tightening collar with a left-hand thread. In a particularly preferred embodiment there is provided a tool for removing or removing a unidirectional fastener of the type having a generally circular head with a flat upper surface portion and a convex upper surface portion. Again, the tool advantageously includes an elongated rod having at one end a pair of tips for coupling the clamping element, which extend from that end to couple the head of the unidirectional clamping element. Additionally still, the tool preferably again includes a nozzle that is disposed on the rod, so that the rotation movement of the rod serves to impart a rotational movement to the nozzle. Additionally still, the tool of preference includes means for positioning the nozzle in an adjustable manner with respect to the tips for coupling the clamping element, with the purpose of causing both the nozzle and the tips for coupling the clamping element, coupling with the head of the unidirectional fastening element, whereby the rotation movement of the rod imparts torque to the head of the unidirectional clamping element through the rotation movement of the tips for the coupling of the clamping element as well as to the clamping element. through the rotation movement of the nozzle. Further additional details of the present invention include that the nozzle has means for gripping the head of the unidirectional fastening element in an adjustable manner, while the tips for coupling the fastening element are also coupled to the head of the fastening element. unidirectional Means for positioning the nozzle preferably include a first portion of the nozzle, and the means for gripping the fastener preferably includes a second portion of the nozzle, axially spaced from the first portion of the nozzle along the same. The first portion of the nozzle advantageously comprises a clamping collar threaded onto the nozzle with right-hand thread, and similarly, the second portion of the nozzle advantageously comprises a clamping collar threaded onto the nozzle with left-hand thread. The gripping means of the clamping element preferably includes a plurality of teeth disposed around the internal surface of the nozzle to clamp the head of the unidirectional clamping element, for the purpose of imparting torque to it. In an exceptionally preferred embodiment, the teeth are each inclined so as to form an angle to engage the head of the unidirectional clamping element by gagging it counterclockwise, around a radial line passing through of an axis of rotation movement of the nozzle. As will be appreciated, the teeth could alternately extend radially, or they could be inclined so that they form an angle suitable for use with clockwise rotation, to remove or remove a threaded fastener left. In a further aspect, the present invention is particularly suitable as a tool for removing or removing fasteners of the type having a threaded stud with a right thread. The tool can advantageously be further configured as a double nozzle adapted to be secured in an adjustable manner to an elongate rod, so that a rotating movement of the rod counterclockwise causes a double movement to be imparted to the double nozzle. of rotation counterclockwise. In the case of this arrangement, the double nozzle includes a first nozzle for positioning the tips for coupling the fastening element in an adjustable manner with respect to a second nozzle, so that both are coupled to the head of the unidirectional fastening element. As regards the second nozzle, it advantageously comprises means for gripping the head of the unidirectional fastening element together with the tips for coupling the fastening element in an adjustable manner, after the tips for coupling the fastening element have have been positioned in an adjustable manner with respect to the second nozzle using the first nozzle, whereby a subsequent rotational movement of the rod counterclockwise serves to impart torque to the head of the unidirectional fastener, due a rotational counter-clockwise movement of the tips for the engagement of the clamping element as well as a counter-clockwise rotational movement of the second nozzle is caused. In an embodiment that is absolutely the most preferred, opposite the end of the tips for coupling the clamping element, the rod has a non-circular cross-section end which is driven by hand or by drive of driving tool to impart torque of torsion to the head in order to remove or remove the unidirectional fastener. The double nozzle also preferably has an intermediate knurled segment between the first nozzle and the second nozzle, and the collars of the first nozzle and second nozzle preferably are also knurled. Furthermore, the tips for fastening the fastening element advantageously each have an oblique surface for clamping the head of the unidirectional fastening element each time torque is imparted through the counter-clockwise rotation movement. of the tool. Other objects, advantages and features of the present invention will become apparent upon consideration of the following specification in light of the drawings. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a partially sectioned view of a tool for removing fasteners, in accordance with the present invention; Figure 2 is an elevational view of the end of the tool for removing fasteners illustrated in Figure 1; Figure 3 is a perspective view developed (in exploded view) of the tool for removing fasteners illustrated in Figure 1; and Figure 4 is a top plan view of a unidirectional fastening element of the general type to be removed or removed with the tool of Figure 1. Detailed description of the preferred embodiment In the illustrations provided, and referring first to the 1, the reference numeral 10 generally designates a tool for removing a fastening element of the type having a head 12 on a threaded stud 14. The fastening element may be of any type having a head and an asparagus, although a particular application for the tool 10 is to remove a unidirectional fastener such as the one illustrated and designated 16, in which the head 12 is circular and has a pair 18a and 18b of flat upper surface portions together with a pair 20a and 20b of upper convex surface portions (see figure 4). As will be appreciated from Figure 4, the respective upper surface portions 18a and 18b and upper convex surface 20a and 20b are generally located in diametrically opposed quadrants. Referring to FIGS. 1 and 3, the tool 10 includes an elongate rod 22 having an end 24 designed to be properly coupled with the head 12 of the unidirectional holding element 16, in the form of a pair of points 24a and 24b that engage the fastening element. It can be seen and appreciated that the tips 24a and 24b extend from the rod to engage the head 12 of the unidirectional clamping element 16. Additionally, the tool 10 includes a double nozzle generally designated with the reference number 26 which is positioned or located on the rod 22 and includes means for gripping the head 12 of the unidirectional fastening element 16 in an adjustable manner, as will be described in FIG. more detail below. As may best be illustrated in Figure 1, the double nozzle 26 is adapted to be axially adjustable to the elongate rod 22, so that a counter-clockwise rotation of the rod 22 causes it to be imparted. a counter-clockwise rotation movement to the double nozzle 26. Considering FIGS. 1 and 3 it will be appreciated and appreciated that the double nozzle 26 includes a first nozzle or portion 26a of the nozzle for adjustable positioning the tips 24a and 24b for the coupling of the holding element with respect to a second nozzle or portion 26b of the nozzle, so that the second nozzle or portion 26b of the nozzle and the tips 24a and 24b for the The coupling of the fastening element engages both (second nozzle and tips) simultaneously with the head 12 of the unidirectional fastening element 16. As will also be described in detail later, the second nozzle or portion 26b of the nozzle comprises means for gripping the head 12 of the unidirectional fastening element 16 in an adjustable manner together with the tips 24a and 24b for the attachment of the fastening element. , after the tips for fastening the fastener have been positioned adjustably using the first nozzle or portion 26a of the nozzle. With respect to the double nozzle 26, the first nozzle or portion 26a of the nozzle includes a threaded clamping collar 28a on the double nozzle 26 with right hand thread, and the second nozzle or portion 26b of the nozzle includes a clamping collar 28b threaded on the double nozzle 26 with left thread. In the preferred embodiment it will be seen that the double nozzle 26 is configured such that it has a radially enlarged central portion 26c., which preferably has a knurled outer surface, and it will be seen that the first and second nozzles, or portions 26a and 26b of the nozzle, have a plurality of axially extending grooves, such as 30a and 30b, wherein the external surfaces of the first and second nozzles, or portions 26a and 26b of the nozzle, respectively have right-hand thread and left-hand thread as shown in 32a and 32b. With this structure the clamping collars 28a and 28b can be screwed onto the first and second nozzles, or the portions 26a and 26b of the nozzle, using respective right and left internal threads (not shown) to properly tighten the double nozzle 26 on the rod 22 and the head 12 of the clamping element 16. In the typical manner of the nozzles, the clamping collars 28a and 28b can be screwed onto the respective first nozzle or portion 26a of the nozzle and second nozzle or portion 26b of the nozzle, to cause them to be adjustable in an adjustable manner to the rod 22 and grasping the head 12 of the fastening element 16. The inner surface of the first and second nozzles, or portions 26a and 26b of the nozzle, may be of generally circular cross-section (or, alternatively, at least the inner surface of the first nozzle or portion 26a of the nozzle may be hexagonal to conform to the shape of a rod 22 of hexagonal contour), and the external surface bearing the thread as in 32a and 32b may be slightly tapered to a marginally larger diameter from the respective ends 34a and 34b in a direction toward the intermediate 26c portion knurled. In this way the diameters or internal dimensions of the first and second nozzles, or of the portions 26a and 26b of the nozzle, are reduced by screwing the collars 28a and 28b onto the threads as in 32a and 32b, using the right threads and left towards the intermediate knurled portion 26c.

As mentioned above, the inner surface of the first nozzle or portion 26a of the nozzle can be formed so that its cross section is not circular, to adhere to the hexagonal outer surface of the rod 22 in a form of alternative structure. Thus, the rod 22 can advantageously be formed so that it has a hexagonal contour, so that it can be housed in a motorized tool such as a cordless portable electric screwdriver, in which case the inner surface of the first nozzle or portion 26a of the nozzle can be configured with a similar contour, so that it has a hexagonal cross section. In any case the internal surface of the first nozzle or portion 26a of the nozzle will have dimensions that allow it to accommodate the rod 22 when the collar 26a is screwed in a loose position axially spaced apart from the knurled intermediate portion 26c. Of course, the inner surface of the first nozzle or portion 26a of the nozzle will be machined with a sufficiently narrow tolerance with respect to the external dimension of the rod 22, so as to secure it tightly against the rod 22 when the collar 28a is screwed into a axially tightened position adjacent to the knurled intermediate portion 26c.

As regards the second nozzle or portion 26b of the nozzle of the double nozzle 26, it will be seen that it includes means for gripping the fastener element which are preferably in the form of a plurality of teeth 36 arranged around an inner surface for gagging the head 12 of the unidirectional fastening element 16 and imparting torque to it. Preferably the teeth 36 are each inclined to engage the head 12 of the unidirectional clamping element 16 by clamping it counterclockwise about a radial line passing through an axis of rotational movement of the double nozzle 26, as best illustrated in Figure 2. Accordingly, the collar 28b may be screwed onto the second nozzle or portion 26b of the nozzle to reduce its internal diameter, thereby causing the teeth 36 to muzzle with force or tightly the head 12 of the unidirectional fastening element 16 when using the left threads in a manner similar to that described in relation to the collar 28a. As previously discussed, the double nozzle 26 has an intermediate knurled segment 26c between the first nozzle or portion 26a of the nozzle and the second nozzle or portion 26b of the nozzle, and the respective collars 28a and 28b of the first and second nozzles. second nozzle, or portions 26a and 26b of the nozzle, are preferably also knurled. The respective knurling in particular makes it possible to tighten the collars 28a and 28b both by hand and also by means of a motorized tool. In addition, the second nozzle or portion 26b of the nozzle and the corresponding collar 28b preferably use left threads, so that there is a tendency to further tighten the second nozzle or portion 26b of the nozzle so that the teeth 36 dig deeper in the head 12 of the unidirectional fastening element 16 during the removal operation of the fastening element. As will be better seen in Figure 3, the tips 24a and 24b for fastening the fastening element preferably each have an oblique surface formed so as to force them into the head 12 of the unidirectional fastening element 16 as well. when torque is imparted by rotational movement of the tool 10 counterclockwise. If the tips 24a and 24b for attachment of the fastening element and the second nozzle or portion 26b of the nozzle are located in such a way that both the tips 24a and 24b as well as the teeth 36 can all be engaged by gagging the cavity 12 of the element 16 of unidirectional support, the tool 10 is extremely effective in removing any unidirectional fastening element 16. In the foregoing it was previously discussed that the rod 22 can be configured with a hexagonal contour which is greatly advantageous for using a portable electric cordless mover. However, and as will also be appreciated, the rod 22 can be manufactured with an integral handle in the conventional normal form of a hand held screwdriver to also provide a unique improved hand tool for the removal of fasteners. Also, in the foregoing description the tool 10 was described to be used in the removal of a unidirectional fastening element of the type having a generally circular head 12 with a pair of flat upper surface portions 18a and 18b, and a pair of portions 20a and 20b of upper convex surface. However, it will be appreciated that the possibilities of application of the tool 10 are much broader for the removal of any fastening element of the type that has a head on an asparagus, among which may include, but not limited to, head screws flat, flattened cone head screws and the like. For all these applications the tips 24a and 24b for the attachment of the clamping element can be used to extract (partially) the clamping element and / or the second nozzle or portion 26b of the nozzle can be used to cause the teeth 36 to be clave by gagging the head to remove it completely. Even though in the foregoing a preferred embodiment of the invention was set forth, it will be appreciated that it is possible for those skilled in the art to vary the details disclosed in this specification without thereby departing from the true scope and spirit of the appended claims.

Claims (19)

1. CLAIMS A tool for removing fasteners of the type having a head on an asparagus, characterized in that it comprises: means for supporting a nozzle in such a way that torque can be imparted by the rotational movement of said nozzle with respect to to said head of said fastening element; and a nozzle including means for adjustably grasping said head of said fastening element. The tool for removing fasteners according to claim 1, characterized in that it includes means to position said nozzle in an adjustable manner on said means for supporting the nozzle. The tool for removing clamping elements according to claim 2, characterized in that said means for supporting said nozzle includes an elongate rod and said means for positioning the nozzle include a first portion of the nozzle. The tool for removing clamping elements according to claim 3, characterized in that said elongate rod has an end to be placed in coupling with said head of said clamping element, end that includes a pair of tips for coupling with the fastening element. The tool for removing fasteners according to claim 3, characterized in that said gripping means of the fastening element includes a second portion of the nozzle axially spaced from said first portion of the nozzle along said nozzle . The tool for removing clamping elements according to claim 5, characterized in that said second portion of the nozzle includes a plurality of teeth around an inner surface for gagging said head of said clamping element. The tool for removing clamping elements according to claim 5, characterized in that said first portion of the nozzle has a collar with right thread and said second portion of the nozzle has a collar with left thread. A tool to remove unidirectional fasteners of the type that have a head ~ > ~ > generally circular with a flat upper surface portion and a convex upper surface portion, characterized in that it comprises: an elongated rod having an end to be placed in engagement with said head of said unidirectional holding element, said end being of said rod has a pair of tips for coupling the clamping element, which extend from said end to engage said head of said unidirectional clamping element, and a nozzle disposed on the rod including means for grasping in an adjustable manner said clamping element. head of said unidirectional fastening element; said nozzle being adapted to be arranged on said rod so that the rotation movement of said rod causes rotation movement to be imparted to said nozzle; and means for positioning said nozzle in an adjustable manner with respect to said tips for coupling the fastening element, to cause both the said nozzle and also said tips for coupling the fastening element to be coupled to said head of said element unidirectional fastening; whereby the rotation movement of said rod imparts twisting torque to said head of said unidirectional clamping element through the movements of rotation of said tips for coupling the clamping element and said nozzle. The tool for removing clamping elements according to claim 8, characterized in that said gripping means of the clamping element are adjustable to grip the head of said unidirectional clamping element while said tips for coupling the clamping element. They are also coupled to said head of said unidirectional fastening element. The tool for removing fasteners according to claim 8, characterized in that said means for positioning said nozzle includes a first portion of the nozzle, and said means for grasping the fastening element includes a second portion of the nozzle axially spaced from said first portion of the nozzle along the length of said nozzle. said mouthpiece. The tool for removing fasteners according to claim 10, characterized in that said first portion of the nozzle includes a threaded collar on said nozzle with right-hand thread, and said second portion of the nozzle includes a threaded collar on said nozzle with left thread. The tool for removing fasteners according to claim 8, characterized in that said gripping means of the fastening element includes a plurality of teeth disposed around the internal surface of said nozzle to muzzle said head of said fastening element. Unidirectional support, to impart twisting torque. The tool for removing clamping elements according to claim 11, characterized in that said teeth are each inclined to be coupled to said head of said unidirectional clamping element by clamping it counterclockwise around a clamp. radial line passing through an axis of the rotation movement of said nozzle. The tool for removing clamping elements according to claim 8, characterized in that said rod has a non-circular cross-section end opposite said tips for coupling the clamping element, so that it can be operated by hand or by means of motorized tool for imparting torque to said head to remove said unidirectional fastening element. A tool for removing unidirectional fastening elements of the type having a generally circular head with a flat upper surface portion and a convex upper surface portion integrated with a threaded stud having a right thread, characterized in that it comprises: a rod elongate having an end to be placed in engagement with said head of said unidirectional fastening element, said end of said rod having a pair of points for coupling the fastening element extending from said end to be coupled to said head said unidirectional fastening element, and a double nozzle on said rod including means for gripping said head of said unidirectional fastening element in an adjustable manner; said double nozzle being adapted to be secured in an adjustable manner on said rod, so that the rotation movement of said rod against the clockwise direction causes a rotation movement to be imparted against the clockwise direction to said double nozzle; and said double nozzle includes a first nozzle for adjustable positioning said tips for coupling the fastener element with respect to a second nozzle, with the purpose of causing both said second nozzle and said tips for attachment of the fastening element , are coupled to said head of said unidirectional fastening element; said second nozzle comprising means for gripping said head of said unidirectional fastening element in an adjustable manner together with said tips for coupling the fastening element, after said tips for coupling the fastening element have been positioned adjustably with said first nozzle; whereby the counter-clockwise rotation movement of said rod imparts twisting torque to said head of said unidirectional clamping element through the rotational movements counter-clockwise of said tips for coupling the fastening element and said second nozzle. The tool for removing fasteners according to claim 15, characterized in that said first nozzle includes a threaded collar with right thread on said double nozzle and said second nozzle includes a threaded collar with left thread on said nozzle double. The tool for removing fasteners according to claim 15, characterized in that said gripping means of the fastening element includes a plurality of teeth disposed around an internal surface of said second nozzle for clamping said head said unidirectional fastening element, for imparting torque to it. 18. The tool for removing clamping elements according to claim 17, characterized in that said teeth are each inclined for coupling to said head of said unidirectional clamping element by clamping it around a radial line passing through an axis of rotation movement counter-clockwise of said double nozzle. The tool for removing clamping elements according to claim 15, characterized in that said rod has a non-circular cross-section end opposite said tips for coupling the clamping element so that it can be operated by hand or by means of a motorized tool for imparting torque to said head to remove said unidirectional fastening element. The tool for removing clamping elements according to claim 16, characterized in that said double nozzle has an intermediate knurled segment between said first nozzle and said second nozzle, and said collars of said first nozzle and said second nozzle also They are muleteados. The tool for removing clamping elements according to claim 15, characterized in that said tips for coupling the clamping element each have an oblique surface for nailing by clamping said head of said unidirectional clamping element when imparting torque to the clamping element. torsion by the rotation movement counter-clockwise of said tool. EE = UMEN In order to facilitate the removal of fasteners of the type having a head and an asparagus, a tool for removing such fastening element is disclosed. The tool includes a support for a nozzle that allows imparting torque for the removal of a fastening element by the rotation movement of the nozzle with respect to the head of the fastening element. In addition, the nozzle is positioned in an adjustable manner on the support and has adjustable dimensions for gripping the head of the fastening element.