Anti-slip fastener remover tool

Abstract

To provide an anti-slip fastener remover tool in which slip possibility is substantially excluded.SOLUTION: An anti-slip fastener remover tool includes a torque-tool body 1, a plurality of paired engagement features 3, and an intersection point. The plurality of paired engagement features, which grip a lateral surface of a stripped fastener head, are radially arranged around a rotation axis 2 of the torque-tool body 1. The plurality of paired engagement features 3 include a first engagement feature and a second engagement feature in which the respective engagement features 3 in the pair are offset to each other by 30 degrees. The first engagement feature and the second engagement feature respectively include brace parts, cavity parts and connector parts which are each in a pair and each adjacent and connected to each other. The cavity part of the first engagement feature is adjacent and connected to the cavity part of the second engagement feature. The brace parts of the first engagement feature and the second engagement feature are so located as to face each other with respect to the cavity parts of the first engagement feature and the second engagement feature.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention broadly relates to tools designed to tighten or loosen fasteners (especially bolts and nuts). More particularly, the present invention is a fastener removal tool having an anti-slip mechanism designed to engage bolts, nuts, and other similar fasteners in a state with less likelihood of slipping.

Background Art

[0002] Hex bolts, nuts, screws, and other similar screw devices are used to fix and hold multiple parts by engaging with complementary screws known as "female threads". The general structure of this type of fastener consists of a cylindrical shaft with external threads and a head portion connected to one end of the cylindrical shaft. The external threads engage with complementary female threads engraved in a hole or nut, fixing the fastener in a predetermined position and fixing the related parts to each other. The head portion is a means for receiving an external torque force and rotating (driving) the fastener relative to the female thread. The head portion has a special shape so that an external tool such as a wrench can apply torque to the fastener and rotate it to engage with the complementary female thread to a certain extent. This type of fastener is simple, very effective, inexpensive, and widely used in modern buildings. One of the most common problems when using this type of fastener, whether it is a male thread or a female thread, is that the tool slips on (or within) the head portion. This is generally caused by any of wear, corrosion, over-tightening of the fastener or tool, or damage to the head portion of the fastener. There are various ways to remove the fastener, some of which are more destructive. Once the fastener head is damaged, more destructive methods may have to be implemented to remove the stuck fastener. Drilling a hole to remove the fastener is a method often used by some users. Although this method may be effective in some cases, there is a high risk of damaging the internal thread on the hole side.

[0003] The present invention is an anti-slip type fastener removal tool that substantially eliminates the possibility of slipping. In the present invention, a series of integral engagement segments are used that bite into the head portion of the fastener and enable efficient torque transmission between the extractor bit and the head portion of the fastener. As a result, the tool according to the present invention can be used to tighten or loosen the fastener without fear of damaging the corners of the fastener.

Brief Description of the Drawings

[0004]

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DETAILED DESCRIPTION OF THE INVENTION

[0005] All the figures in the drawings are for explaining a selected version of the present invention and are not intended to limit the scope of the present invention.

[0006] The present invention is a non-slip type tool used for tightening or loosening fasteners (fastening tools) such as damaged or peeled nuts and bolts. In the design of conventional wrenches, most of the torque is transmitted to the damaged or peeled fastener through the corners on the side surface of the fastener head. Over time, the deterioration of the side corners reduces the torque transmission efficiency from the wrench to the fastener head, resulting in slippage. The present invention overcomes this problem by moving the contact point to the side surface of the fastener head. This is achieved by using a large number of teeth. Each tooth is arranged to engage (like "bite") with the surface of the side rather than the corner of the side surface of the fastener head. Thereby, an appropriate amount of torque is transmitted to the fastener head, and when rotation starts, the damaged or peeled fastener can be pulled out or tightened. However, the present invention is also designed so as not to damage the fastener when used with an undamaged or new fastener, when torque is applied according to the maximum specified torque level or industry-approved torque level for a specific size (diameter) of the fastener.

[0007] The present invention utilizes a number of teeth that engage the side surface of the fastener head (regardless of whether it is damaged) to efficiently apply torque to a damaged or detached fastener. The present invention can also be incorporated and utilized in various general tools to increase the torque force applied to the fastener. Here, general tools include, but are not limited to, open-end wrenches, adjustable wrenches, pipe wrenches, socket wrenches, plumbers' wrenches, and other similar fastener-engaging tools. The present invention is compatible with fasteners having a female member-based head design, but as described in this application, the present invention can also be incorporated into the head design of male fasteners. Fasteners that utilize a female member head design, also known as female fasteners, utilize the internal cavity of the fastener head to engage with a tool for tightening or loosening. Fasteners that utilize a male member head design, also known as male fasteners, use the outer lateral surface of the fastener head to engage with a tool for tightening or loosening. Further, the present invention is compatible with both right-handed and left-handed fasteners. Additionally, the present invention may be modified and configured to be compatible with various types and sizes of fasteners.

[0008] As shown in FIGS. 1 to 4, the present invention includes a torque tool body 1, a plurality of pairs of engaging features 3, and an intersection point 34. The torque tool body 1 is used as a physical structure for applying a corresponding force on the fastener head by the plurality of pairs of engaging features 3. In some fasteners, the torque tool body 1 functions similar to a driver bit sized to fit into the opening of the fastener head. The length, width, and diameter of the torque tool body 1 may be varied to fit different sizes of male or female fasteners. The plurality of pairs of engaging features 3 are arranged radially around the rotation axis 2 of the torque tool body 1 to prevent slipping of the fastener damaged or peeled during extraction, as shown in FIGS. 3 to 6 and FIG. 8. As a result, the plurality of pairs of engaging features 3 facilitate torque transmission to male and female fasteners by preventing slipping between the torque tool body 1 and the fastener head. The intersection point 34 is identified as the meeting point of two pairs of engaging features 3. In other words, an engaging feature 32 forming any pair among the plurality of pairs of engaging features 3 and an engaging feature 33 forming the adjacent pair among the plurality of pairs of engaging features 3 are connected to each other via the intersection point 34. Depending on various embodiments of the present invention, the intersection point 34 may be a sharp point or a curved portion with a small radius. In some embodiments, a third segment may be incorporated into the intersection point 34, where the third segment is preferably a straight portion connected between the plurality of pairs of engaging features 3 in any brace portion and the adjacent brace portion 4. More specifically, as shown in FIGS. 1 to 7, the torque tool body 1 is a male-type embodiment designed for use with female socket-type fasteners.

[0009] The plurality of pairs of engaging features 3 are distributed in a polygonal shape within the torque tool body 1 and are preferably symmetrically positioned along the rotation axis 2. Here, the rotation axis 2 traverses the center of the torque tool body 1. In the present invention, a symmetrical design is ensured so that it functions equally when the fastener is rotated clockwise or counterclockwise.

[0010] As shown in FIG. 1, the torque tool body 1 extends outward from the rotation axis 2 toward a plurality of pairs of engaging features 3. As a result, the plurality of pairs of engaging features 3 are distributed around the rotation axis 2 on the outer surface of the torque tool body 1, and the driver bit structure according to the present invention is obtained. The driver bit structure of the torque tool body 1 engages with the opening of the fastener head so that the plurality of pairs of engaging features 3 can engage internally with the fastener head.

[0011] In FIGS. 8 to 9, the torque tool body 1 extends inward from the outer wall 20 of the torque tool body 1 to a plurality of pairs of engaging features 3. As a result, the plurality of pairs of engaging features 3 are distributed around the rotation axis 2 on the inner circumferential surface of the torque tool body 1, and the female socket structure according to the present invention is obtained. The female socket structure of the torque tool body 1 engages with the side surface of the fastener head so that the plurality of pairs of engaging features 3 can engage externally with the fastener head. More specifically, the torque tool body 1 shown in FIGS. 8 and 9 is a female embodiment designed for use with the male surface of the fastener.

[0012] In addition, the present invention incorporates an attachment mechanism for attaching an external torque application tool to the torque tool body 1 so as to be able to increase the torque force applied to the fastener head. As shown in FIGS. 1 to 2 and FIGS. 8 to 9, the present invention further includes an attachment body 10 and an engagement bore 11 that enable an external torque application tool such as an open-end wrench, a box-end wrench, a combination wrench, an adjustable wrench, a socket wrench, or a ratchet wrench to be attached to the torque tool body 1. The attachment body 10 is positioned around the rotation axis 2, along the rotation axis 2, and centered on the rotation axis 2 so as to coincide with the rotation axis of the external torque application tool. Further, the attachment body 10 is connected adjacent to the torque tool body 1. The diameter of the attachment body 10 is preferably slightly larger than the diameter of the torque tool body 1. However, the attachment body 10 may have a diameter smaller than that of the torque tool body 1 depending on the preferred manufacturing method or design, or the attachment body 10 may have the same size diameter as the torque tool body 1. The engagement bore 11 traverses the inside of the attachment body 10 along the rotation axis 2. The engagement bore 11 is shaped to receive the male attachment member of the socket wrench, and its preferred shape is square since most socket wrenches utilize a square male attachment member. In an alternative embodiment, the shape and design of the engagement bore 11 and the attachment body 10 may vary to accommodate various torque application tools and different attachment means, including but not limited to polygonal or cylindrical shapes. In an alternative embodiment, the outer surface of the attachment body 10 may be surface-grip processed by knurling or other alternative methods to increase the friction between the torque tool body 1 and the user's hand.

[0013] The bottom surface of the attachment body 10 may be tapered so that it becomes thinner as it moves away from the engagement bore 11, allowing the multiple pairs of engagement features 3 to be driven into the damaged and peeled fastener head by the hammer without hitting or damaging the engagement bore 11. In other words, depending on the user's preference, the diameter of the attachment body 10 near the engagement bore 11 may be made slightly larger than the diameter of the attachment body 10 near the torque tool body 1, giving the bottom surface of the attachment body 10 a tapered shape that becomes thinner as it moves away from the engagement bore 11. In some embodiments of the present invention, since the attachment body 10 itself functions as an engagement feature between the present invention and the external torque force, the attachment body 10 may not include the engagement bore 11. The attachment body 10 may have an external shape that is hexagonal or square so that torque can be applied by an external torque tool such as a wrench, socket, or pliers. In an alternative embodiment, the attachment body 10 may incorporate a wrench handle, preferably, the wrench handle is connected diametrically to the torque tool body 1. In other words, the wrench handle is connected perpendicular to the torque tool body 1 and the rotation axis 2.

[0014] Furthermore, the wrench handle may be connected to the outside of the torque tool body 1, in which case the wrench handle functions as an external torque application tool. In the female torque tool body 1, each of the multiple pairs of engagement features 3 extends along a specific length of the torque tool body 1, thereby defining a cavity within the torque tool body 1. The aforementioned cavity functions as a receiving cavity for the fastener head so that the multiple pairs of engagement features 3 can grip the side surface of the fastener head. The present invention further includes a fastener receiving hole that penetrates the torque tool body 1. The fastener receiving hole perpendicular to the rotation axis 2 is located on the opposite side of the wrench handle and is arranged across the torque tool body 1, providing a side opening for engaging the multiple pairs of engagement features 3.

[0015] The attachment body 10 may incorporate a quick connect function commonly used in drills, impact drivers, and driver attachments.

[0016] As shown in FIGS. 3 and 8, the plurality of pairs of engagement features 3 are arranged at equal intervals with respect to the torque tool body 1 and form an enclosed shape. To configure the enclosed shape, the plurality of pairs of engagement features 3 include a first engagement feature 7, a second engagement feature 8, and a bisector 6.

[0017] Furthermore, as shown in FIGS. 3 and 8, the cross-sections of each of the first engaging feature 7 and the second engaging feature 8 include the brace portion 4, the cavity portion 5, and the connector portion 31. More specifically, the brace portion 4 and the cavity portion 5 are connected adjacent to each other by the connector portion 31, defining a single engaging feature that bites into the fastener head when removing a damaged or detached fastener. The connector portion 31 is preferably small and convex, but may also have an angular shape or a concave shape. The connector portion 31 may further be a sharp intersection. The length of the connector portion 31 is preferably shorter than the brace portion 4 or the cavity portion 5 of the first engaging feature 7 and the second engaging feature 8. However, the ratio of the length of the connector portion 31 to the lengths of other components within the first engaging feature 7 and the second engaging feature 8 may be arbitrary. In some embodiments, the brace portion 4, the connector portion 31, and the first portion of the cavity portion 5 are continuous and on the same straight line. Within the aforementioned single male engaging function, the brace portion 4 functions as the third engaging function, the cavity portion 5 functions as the first engaging function, and the connector portion 31 functions as the second engaging function. However, it should be understood that in the female embodiment of the present invention, the order of the pair of engaging features 3 is reversed. Furthermore, the order of the pair of engaging features 3 may be in any order in a particular embodiment or application or fastener, and is not limited to the aforementioned order. For example, in certain situations, the connector portion 31 may be the first engaging feature in the order of the pair of engaging features 3. When a torque force is applied to the torque tool body 1, the fastener head can engage with the first engaging feature, the second engaging feature, or the third engaging feature of the single engaging feature, or all three engaging features within the single engaging feature, depending on its shape.

[0018] In some uses or embodiments of the torque tool body 1, when the brace portion 4 engages with the male fastener, the cavity portion 5 remains an empty space. In other words, among the plurality of pairs of engaging features 3, the brace portion 4 engages with the fastener, but the cavity portion 5 does not engage with the fastener head and forms a gap. Thereby, a larger force can be applied to the fastener surface through the brace portions 4 of the plurality of pairs of engaging features 3. When the brace portion 4 of an arbitrary pair of engaging features 32 and the brace portion 4 of the adjacent pair of engaging features 33 simultaneously engage with the fastener surface, depending on the rotational direction of the tool, the torque forces of the first engaging feature 7 and the second engaging feature 8 are generated alternately and intermittently within the surrounding shape. In other words, when the first engaging feature 7 engages with the fastener and a torque force is applied, the second engaging feature 8 intermittently engages. Alternatively, when the second engaging feature 8 engages with the fastener and a torque force is applied, the first engaging feature 7 intermittently engages. The bisector 6 separates the first engaging feature 7 and the second engaging feature 8 into equal intervals in each of the plurality of pairs of engaging features 3.

[0019] The upper surface of the torque tool body 1 and the lower surface of the attachment body 10 are arranged on opposite sides of each other with the plurality of pairs of engaging features 3 interposed therebetween, and the upper surface and the lower surface are configured as flat surfaces.

[0020] The lengths of the brace portion 4 and the cavity portion 5, and the corresponding angles between the brace portion 4 and the cavity portion 5 may be arbitrary in order to create a shape like sharp teeth in the engaging feature portion. The first engaging feature portion 7 is an arbitrary feature portion within the engaging feature portions 3 that form a plurality of pairs, and the second engaging feature portion 8 is a feature portion located directly beside the first engaging feature portion 7 within the corresponding engaging feature portions 3 that form a plurality of pairs. More specifically, the cavity portion 5 of the first engaging feature portion 7 is connected adjacent to the cavity portion 5 of the second engaging feature portion 8. As shown in FIGS. 1 to 7, the cavity portion 5 of the first engaging feature portion 7 and the cavity portion 5 of the second engaging feature portion 8 are oriented toward the rotation axis 2 and define a radial shape. The shape is preferably a partial circular shape or an elliptical shape, but may also be an angular shape such as a triangular shape, a trapezoidal shape, or a rectangular shape, and is not limited to these shapes. The cavity portions 5 can also be joined by combining the shapes, but in a preferred case for manufacturing, the shapes or components may be joined with a radial profile. The brace portion 4 of the first engaging feature portion 7 and the brace portion 4 of the second engaging feature portion 8 are arranged opposite to each other with respect to the cavity portion 5 of the first engaging feature portion 7 and the cavity portion 5 of the second engaging feature portion 8, and are directed in a direction away from the rotation axis 2. In other words, the cavity portion 5 of the first engaging feature portion 7 and the cavity portion 5 of the second engaging feature portion 8 are arranged adjacent to each other between the brace portion 4 of the first engaging feature portion 7 and the brace portion 4 of the second engaging feature portion 8.

[0021] As shown in FIGS. 1 to 9, the ratio of the length (first length ratio) between the brace portion 4 of the first engaging feature portion 7 and the cavity portion 5 of the first engaging feature portion 7 is 1:2. The brace portion 4 of the first engaging feature portion 7 is preferably a flat surface, but may also be a cambered surface or a concave surface. The ratio of the length (second length ratio) between the brace portion 4 of the second engaging feature portion 8 and the cavity portion 5 of the second engaging feature portion 8 is 1:2. The brace portion 4 of the second engaging feature portion 8 is preferably a flat surface, but may also be a cambered surface or a concave surface.

[0022] As shown in FIG. 4, the connector portion 31 is defined as the meeting point of the cavity portion 5 and the brace portion 4 of the first engagement feature portion 7, and also as the meeting point of the cavity portion 5 and the brace portion 4 of the second engagement feature portion 8. Depending on different embodiments of the present invention, the connector portion 31 may be a sharp point or a smooth point (curved portion) according to the user's preference. Further, the connector portion 31 is preferably a convex segment and faces away from the rotation axis 2. However, the connector portion 31 may be a flat segment, or a concave segment, or may be connected to the brace portion 4 at an obtuse angle as shown in FIG. 5. The connector portion 31 is an element that newly improves the relationship between the flat brace portion 4 and the cavity portion 5, and the connector portion 31 provides an additional engagement surface for the user. The additional engagement surface defined as the connector portion 31 provides the user with the option to change the tool to a sharp connector portion 31 for a larger grip. Alternatively, a radial flat surface or a concave surface provides the user with a larger surface contact when torque is applied.

[0023] Furthermore, as shown in FIG. 4, the first bisecting angle 17 of the present invention is defined between the connector portion 31 of the first engagement feature portion 7 and the bisecting line 6. Depending on different embodiments of the present invention, the first bisecting angle 17 may be an acute angle, a right angle, or an obtuse angle.

[0024] Furthermore, as shown in FIG. 4, the second bisecting angle 18 of the present invention is defined between the connector portion 31 of the second engagement feature portion 8 and the bisecting line 6. Depending on different embodiments of the present invention, the second bisecting angle 18 may be an acute angle, a right angle, or an obtuse angle.

[0025] Due to the angular positional relationship between the first bisecting angle 17 and the second bisecting angle 18, when a virtual straight line is drawn between the connector portion 31 of the first engagement feature portion 7 and the connector portion 31 of the second engagement feature portion 8, the virtual straight line will be perpendicular to the bisecting line 6.

[0026] Furthermore, when the first angle bisector 17 and the second angle bisector 18 are drawn such that the first virtual line is drawn parallel to the brace portion 4 of the first engaging feature 7 and intersects through the connector portion 31 of the first engaging feature 7, and the second virtual line is drawn parallel to the brace portion 4 of the second engaging feature 8 and intersects through the connector portion 31 of the first engaging feature 7, they are combined at an angle of less than 180 degrees collectively.

[0027] Furthermore, the brace portion 4 of the first engaging feature 7 and the brace portion 4 of the second engaging feature 8 are arranged offset from each other. More specifically, the present invention further includes a first geometric plane and a second geometric plane. The first geometric plane is positioned parallel to the brace portion 4 of the first engaging feature 7, the second geometric plane is positioned parallel to the brace portion 4 of the second engaging feature 8, and the first geometric plane and the second geometric plane are arranged offset from each other. In other words, in the present invention, the first geometric plane and the second geometric plane are not on the same plane. More specifically, the brace portion 4 of the first engaging feature 7 and the brace portion 4 of the second engaging feature 8 are not aligned with each other. Furthermore, the geometric plane of the brace portion 4 is preferably not aligned with the plane of the fastener brace surface of the female version and the male version of the present invention.

[0028] Furthermore, as shown in FIG. 6, the radial distance 35 of the intersection point 34 is from 4 times to 12 times the first length 36 of the brace portion 4 of the first engaging feature 7 or the second length 37 of the brace portion 4 of the second engaging feature 8. Furthermore, as shown in FIG. 7, the radial distance 35 of the intersection point 34 is greater than the radial distance 38 of the connector portion 31 connected to the brace surface 4 of the first engaging feature 7 and the radial distance 39 of the connector portion 31 of the second engaging feature 8. In addition, as shown in FIG. 7, the radial distance 38 is greater than the radial distance 40 of the connector portion 31 connected to the cavity portion 5 of the first engaging feature 7, and the radial distance 39 is greater than the radial distance 41 of the connector portion 31 connected to the cavity portion 5 of the second engaging feature 8.

[0029] As shown in FIGS. 3 and 8, preferably, the number of the engaging features 3 forming a plurality of pairs in contact with the fastener head is six, since the six pairs of engaging features 3 correspond to twelve single engaging features. The first angle 14 between the first engaging features 7 is 30 degrees, and the second angle 15 between the second engaging features 8 is 30 degrees. Further, as shown in FIG. 3, the third angle 16 between each of the engaging features 3 forming a plurality of pairs is in the range of 121 degrees to 179 degrees. As a result, the angular direction between each of the engaging features 3 forming a plurality of pairs can be changed according to different embodiments of the present invention. More specifically, in some embodiments of the present invention, the third angle 16 can be 130 degrees. In some other embodiments of the present invention, the third angle 16 can be 135 degrees. In still some other embodiments of the present invention, the third angle 16 can be 145 degrees. In still some other embodiments of the present invention, the third angle 16 can be 150 degrees.

[0030] In some embodiments of the present invention, the engaging features 3 forming a plurality of pairs may be tapered so as to be away from the rotation axis 2. In other words, the outer diameter of the engaging features 3 forming a plurality of pairs near the upper surface of the torque tool body 1 may be smaller than the outer diameter of the engaging features 3 forming a plurality of pairs near the attachment body 10. Further, the cavity portions 5 of the first engaging features 7 and the cavity portions 5 of the second engaging features 8 may become narrower and shallower as they go from the upper surface of the torque tool body 1 toward the attachment body 10.

[0031] Even if the cavity portions 5 of the first engaging features 7 and the cavity portions 5 of the second engaging features 8 collectively define a circular contour, the present invention is not limited to the circular contour and may be other types of geometric shapes. For example, the cavity portions 5 of the first engaging features 7 and the cavity portions 5 of the second engaging features 8 may define a triangular contour within the corresponding brace portions 4.

[0032] To remove a damaged or stripped fastener according to the present invention, the torque tool body 1 is placed around the damaged or stripped fastener such that most of the plurality of pairs of engaging features 3 are disposed around or inside the fastener head. Thereafter, the user can simply apply a torque force to the torque tool body 1 to rotate and remove the damaged or stripped fastener. When a torque force is applied to the torque tool body 1, the plurality of pairs of engaging features 3 "bite" into the lateral side of the fastener head, as a result of which the damaged or stripped fastener is rotated. The present invention is designed to engage a partially or completely damaged fastener head. The present invention overcomes the slippage of the fastener head by using the plurality of pairs of engaging features 3.

[0033] The present invention can be driven by the cavity portion 5 of the first engaging feature 7 and the cavity portion 5 of the second engaging feature 8 for a corresponding lobular design fastener such as Torx® (registered trademark), and can also be driven on the outer brace surface of the socket fastener through the brace portion 4 of the first engaging feature 7 and the brace portion 4 of the second engaging feature 8.

[0034] In an alternative embodiment including all components of the present invention, it should be understood that a mirror image inversion can be made to create a female version of the present embodiment. In other words, the female version of the present invention is a female embodiment incorporating all the features, functions, and elements of the present invention. The engaging features of the female embodiment engage the side surface or side wall of the male fastener. The protrusion of the male driver tool is directed away from the rotation axis 2, whereas the protrusion of the female driver tool is directed in the direction of the rotation axis 2. Specifically, in the male embodiment, the brace portion 4 and the connector portion 31 in FIGS. 1 to 7 are directed away from the rotation axis 2, whereas in the female embodiment, the brace portion 4 and the connector portion 31 in FIGS. 8 to 8 are directed in the direction towards the rotation axis 2.

[0035] In the present invention, in the plurality of pairs of engaging features 3, in order to create a shape like sharper teeth, the lengths of the brace portion 4 and the cavity portion 5, and the corresponding angles between the brace portion 4 and the cavity portion 5 may be changed. Specifically, the length of the brace portion 4 of the first engaging feature 7 may be greater than the length of the brace portion 4 of the second engaging feature 8, or the length of the brace portion 4 of the second engaging feature 8 may be greater than the length of the brace portion 4 of the second engaging feature 7, and depending on the user's preference, a sharp and aggressive engagement or a less aggressive and dull engagement can be created. The first engaging feature 7 is any feature within the plurality of pairs of engaging features 3, and the second engaging feature 8 is a feature located directly beside the first engaging feature 7 within the corresponding plurality of pairs of engaging features 3. More specifically, the cavity portion 5 of the first engaging feature 7 is connected adjacent to the cavity portion 5 of the second engaging feature 8. As shown in FIGS. 8 to 9, the intersection point 34 is specified as the meeting point of two engaging features 3 out of the plurality of pairs of engaging features 3. In other words, any pair of engaging features 32 within the plurality of pairs of engaging features 3 and an adjacent pair of engaging features 33 within the plurality of pairs of engaging features 3 are connected to each other via the intersection point 34. Depending on different embodiments of the present invention, the intersection point 34 may be a sharp point or a curved portion similar to a small radius. In one embodiment, the intersection point 34 may include a third segment, and the third segment is preferably a straight line portion connected between the plurality of pairs of engaging features 3 of any brace portion 4 and the adjacent brace portion 4. Further, as shown in FIG. 8, the radial distance 35 of the intersection point 34 is 4 to 12 times the first length 36 with respect to the brace portion 4 of the first engaging feature 7 or the second length 37 with respect to the brace portion 4 of the second engaging feature 8. Further, as shown in FIG. 8, the radial distance 35 of the intersection point 34 is smaller than the radial distance 42 of the connector portion 31 of the first engaging feature 7 and / or the radial distance 43 of the connector portion 31 of the second engaging feature 8. The connector portion 31 is defined as the meeting point of the cavity portion 5 and the brace portion 4 of the first engaging feature 7, and also as the meeting point of the cavity portion 5 and the brace portion 4 of the second engaging feature 8.Depending on different embodiments of the present invention, the connector portion 31 may be a sharp point or a smooth point (curved portion) according to the user's preference. In some embodiments, the bracing surface 4, the connector portion 31, and the first portion of the cavity portion 5 are continuous and aligned. Further, the connector portion 31 is preferably a convex segment and is oriented in the direction of the rotation axis 2. However, the connector portion 31 can also be a flat segment, a concave segment, or can be connected to the brace portion 4 at an obtuse angle as shown in FIG. 8. The connector portion 31 newly improves the compatibility between the flat brace portion 4 and the cavity portion 5, and the connector portion 31 provides an additional engagement surface for the user. The additional engagement surface defined as the connector portion 31 provides the user with the option to change the tool to a sharp connector portion for a larger grip. Alternatively, a radial, flat, or concave surface provides the user with a greater surface contact when torque is applied.

[0036] As shown in FIGS. 8 and 9, the cavity portions 5 of the first engaging feature portion 7 and the cavity portions 5 of the second engaging feature portion 8 face away from the rotation axis 2 and collectively define a radially-shaped contour. The contour is preferably semi-circular or elliptical, but may be an angular shape such as triangular, trapezoidal, or quadrilateral, and is not limited to these shapes. The cavity portions 5 may be joined by combining shapes, or may be joined by a shape or component with a radial profile if it is preferable in terms of manufacturing. The brace portions 4 of the first engaging feature portion 7 and the brace portions 4 of the second engaging feature portion 8 are arranged opposite to each other with respect to the cavity portions 5 of the first engaging feature portion 7 and the cavity portions 5 of the second engaging feature portion 8, and face the rotation axis 2 side. In other words, the cavity portions 5 of the first engaging feature portion 7 and the cavity portions 5 of the second engaging feature portion 8 are arranged adjacent to each other between the brace portions 4 of the first engaging feature portion 7 and the brace portions 4 of the second engaging feature portion 8. In some embodiments of the present invention, the plurality of pairs of engaging feature portions 3 may be tapered so as to be away from the rotation axis 2. That is, the outer diameter of the plurality of pairs of engaging feature portions 3 near the upper surface of the torque tool body 1 is larger than the outer diameter of the plurality of pairs of engaging feature portions 3 near the attachment body 10. Further, as shown in FIGS. 8 and 9, the brace portions 4 of the first engaging feature portion 7 and the brace portions 4 of the second engaging feature portion 8 are arranged offset from each other. More specifically, the present invention further includes a first geometric plane and a second geometric plane. The first geometric plane is positioned parallel to the brace portion 4 of the first engaging feature portion 7, the second geometric plane is positioned parallel to the brace portion 4 of the second engaging feature portion 8, and the first geometric plane and the second geometric plane are arranged offset from each other. In other words, in the present invention, the first geometric plane and the second geometric plane are not on the same plane. Specifically, the brace portions 4 of the first engaging feature portion 7 and the brace portions 4 of the second engaging feature portion 8 are not aligned with each other.

[0037] Since all components are part of the whole invention in either the female or male configuration, it should be understood that all components described in the present specification according to the male embodiments of FIGS. 1 to 7 are applicable to the female embodiments of FIGS. 8 to 9 of the present specification, even if not explicitly described as such. Further, conversely, it should be understood that the components described with reference to FIGS. 8 to 9 also apply to FIGS. 1 to 7.

[0038] In FIGS. 1 to 9, in some embodiments, the brace surface 4 may include intermittent sidewalls. The intermittent sidewalls may be disposed between a plurality of sidewalls having a plurality of pairs of engaging features 3. The intermittent sidewalls may be alternately disposed between the plurality of pairs of engaging features 3 or may be disposed on opposite sides of each of the plurality of pairs of engaging features 3. The plurality of intermittent sidewalls may further be a plurality of continuous intermittent sidewalls. In other words, a plurality of intermittent sidewalls may be continuously disposed between the plurality of pairs of engaging features 3. The intermittent sidewalls are preferably flat surfaces.

[0039] Although the invention has been described in connection with its preferred embodiments, it should be understood that many other possible modifications and variations can be made without departing from the spirit and scope of the invention as claimed below.

Claims

1. A torque tool body; a plurality of mating engagement features; and a plurality of intersections; Each of the plurality of intersections has a pointed shape, each of the plurality of pairs of engagement features includes a first engagement feature and a second engagement feature; a cross section of the first engagement feature and the second engagement feature each includes a brace portion, a cavity portion, and a connector portion; The brace portion is planar, the plurality of pairs of engagement features are radially distributed about an axis of rotation of the torque tool body; the brace portion and the cavity portion are adjacent to each other and connected by the connector portion, the connector portion is a convex segment facing away from the axis of rotation; The length of the connector portion is shorter than the length of the brace portion, a cavity portion of the first engagement feature adjacent to and connected to a cavity portion of the second engagement feature; the cavity portion of the first engagement feature and the cavity portion of the second engagement feature are oriented toward the axis of rotation; a brace portion of the first engagement feature and a brace portion of the second engagement feature are disposed opposite each other with respect to a cavity portion of the first engagement feature and a cavity portion of the second engagement feature; any pair of engagement features among the plurality of pairs of engagement features and an adjacent pair of engagement features are connected to each other via a corresponding one of the plurality of intersections; a radial distance of one of the plurality of intersections is greater than a radial distance of each point of the connector portion of the first engagement feature in the same cross-section as the one of the plurality of intersections; a radial distance of one of the plurality of intersections is greater than a radial distance of each point of the connector portion of the second engagement feature in the same cross-section as the one of the plurality of intersections; Anti-slip fastener removal tool.

2. a first angle between the first engagement features is 30 degrees and a second angle between the second engagement features is 30 degrees; The non-slip fastener removal tool according to claim 1.

3. a third angle between each of the plurality of pairs of engagement features ranges from 121 degrees to 179 degrees; The non-slip fastener removal tool according to claim 1.

4. the third angle is 130 degrees; The non-slip fastener removal tool according to claim 3.

5. the third angle is 135 degrees; The non-slip fastener removal tool according to claim 3.

6. the third angle is 145 degrees; The non-slip fastener removal tool according to claim 3.

7. the third angle is 150 degrees; The non-slip fastener removal tool according to claim 3.

8. the torque tool body extending outwardly from the rotational axis to the plurality of pairs of engagement features; The non-slip fastener removal tool according to claim 1.

9. a first length ratio between the brace portion of the first engagement feature and the cavity portion of the first engagement feature is 1:2; The non-slip fastener removal tool according to claim 1.

10. a second length ratio between the brace portion of the second engagement feature and the cavity portion of the second engagement feature is 1:2; The non-slip fastener removal tool according to claim 1.

11. the radial distance of the intersection is between 4 and 12 times the first length of the brace portion of the first engagement feature; The non-slip fastener removal tool according to claim 1.

12. the radial distance of the intersection is between 4 and 12 times the second length of the brace portion of the second engagement feature; The non-slip fastener removal tool according to claim 1.

13. the brace portion of the first engagement feature and the brace portion of the second engagement feature are offset from one another. The non-slip fastener removal tool according to claim 1.

14. Including the attachment body, the attachment body is centrally disposed about and along the axis of rotation; The attachment body is adjacent to and connected to the torque tool body. The non-slip fastener removal tool according to claim 1.

15. Including an engagement bore; the torque tool body extends inwardly from an outer wall of the torque tool body to the plurality of pairs of engagement features; the engagement bore traverses within the attachment body opposite the torque tool body along an axis of rotation; The non-slip fastener removal tool according to claim 14.

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