US20030159546A1 - Anti-tamper nut - Google Patents
Anti-tamper nut Download PDFInfo
- Publication number
- US20030159546A1 US20030159546A1 US10/087,294 US8729402A US2003159546A1 US 20030159546 A1 US20030159546 A1 US 20030159546A1 US 8729402 A US8729402 A US 8729402A US 2003159546 A1 US2003159546 A1 US 2003159546A1
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- US
- United States
- Prior art keywords
- nut
- face
- raised portions
- tamper
- assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 208000029152 Small face Diseases 0.000 claims description 8
- 230000013011 mating Effects 0.000 description 6
- 239000012466 permeate Substances 0.000 description 1
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
- F16B23/0061—Specially shaped nuts or heads of bolts or screws for rotations by a tool with grooves, notches or splines on the external peripheral surface designed for tools engaging in radial direction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B13/00—Spanners; Wrenches
- B25B13/48—Spanners; Wrenches for special purposes
- B25B13/485—Spanners; Wrenches for special purposes for theft-proof screws, bolts or nuts
Definitions
- the present invention relates generally to an anti-tamper nut, and more particularly, to an anti-tamper nut that utilizes an angled surface and plurality of ribs to resist unauthorized removal.
- fasteners have been used in a wide array of applications that permeate every type of industry.
- Many types of fasteners exist that include a threaded portion, such as a bolt, and a nut that threads thereround.
- the nut usually has a series of flattened faces adapted to engage with parallel inner sides or a channel of a mating wrench for rotatably securing and unsecuring the nut to the threaded member.
- the present invention provides a device for securing a first element to a second element that uses a nut.
- the nut has the large face disposed parallel to and opposite from a small face.
- the outer circumference of the large face is connected to the small face by an outer surface.
- the outer surface is tapered.
- a bore disposed through the center of the nut that has a plurality of threads for securing to a threaded member.
- a plurality of ridges extend from the large face to the small face along the outer surface at the same taper angle as the outer surface.
- a kit having component parts includes a nut having a tapered outer surface and a threaded bore, and a wrench adapted to engage the outer surface of the nut. In this way, only users possessing the wrench can attach or remove the nut from a thread member.
- an assembly comprising a first element attached to a second element.
- the threaded member extends from a face of the first element and through an aperture in the second element.
- the second element has a first face abutting the face of the first element and a second face disposed opposite the first face.
- a nut is threaded to the threaded member and clamps against the second face of the second element.
- the nut includes an angled outer surface and a threaded bore extending therethrough.
- FIG. 1 is a perspective view of an anti-tamper nut according to the present invention
- FIG. 2 is a cross-sectional view of an anti-tamper nut along II-II in FIG. 1 according to the present invention
- FIG. 3 is an exploded view of III in FIG. 1 according to the present invention.
- FIG. 4 is a top view of an anti-tamper nut removal device according to the present invention.
- FIG. 5 is a cross-sectional view through V-V in FIG. 4;
- FIG. 6 is a magnified view of VI in FIG. 4;
- FIG. 7 is a cross-sectional view of an anti-tamper nut, anti-tamper nut attachment device and bolt member in operation according to the present invention.
- FIG. 8 is a side view of a second embodiment of an anti-tamper attachment and removal device according to the present invention.
- Anti-tamper nut 10 has a large face 12 disposed in a parallel relationship with a small face 14 .
- An angled outer surface 16 is defined by the surface that extends, in an increasing diameter, from small face 14 to large face 12 .
- Through bore 18 generally includes a central threaded portion 22 extending through the center of anti-tamper nut 10 .
- Central threaded portion 22 has a series of threads 24 for threadingly engaging a mating bolt member (as will be discussed in greater detail with respect to FIG. 7), which can include right handed or left handed threads.
- Through bore 18 extends through the anti-tamper nut 10 and terminates at large face 12 and small face 14 .
- Chamfers 20 are provided that connect each face to through bore 18 and assist in alignment of anti-tamper nut 10 with a mating screw member as well as reducing corner stresses.
- angled outer surface 16 is shown having a plurality of raised portions 26 connected by valleys 28 .
- Each raised portion 26 is preferably rounded and preferably number 15 in total.
- Each raised portion 26 and valley 28 are angled at an angle of inclination as described for angled outer surface 16 .
- the angle of inclination A of angled outer surface 16 is nineteen degrees.
- the angle of inclination can be angled at any angle greater than zero degrees. Specifically, the angle of inclination A can be 1 through 89 degrees.
- raised portions 26 are shown as rounded bumps and valleys 28 are illustrated as flat connecting portions. These portions 26 preferably have a radius of 0.6-0.7 millimeters.
- the rounded surface again, helps ensure that only an accompanying wrench used by an authorized individual is able to remove anti-tamper nut 10 from a threaded member such as a bolt.
- it is also possible to use other shapes for raised portion 26 including other rounded shapes, triangular shapes and trapezoidal shapes as all of these shapes have angled edges that allow slip if anything other than a matching wrench is used.
- the use of a rounded or angled shape is a preferred embodiment, the use of rigid or flat shapes including squares or rectangulars can also be used.
- Anti-tamper attachment and removal device 30 includes an arm 32 and a mating portion 34 .
- Mating portion 34 includes a nut engagement area 36 and a tooth portion 38 .
- Nut engagement area 36 provides structural support to tooth portion 38 when engaged with anti-tamper nut 10 (as will be described) and is preferably forged or machined as one piece with arm 32 .
- Tooth portion 38 has a plurality of depressions 40 and connection areas 42 . Depressions 40 are preferably circular and match the radius of curvature of raised portions 26 of anti-tamper nut 10 . However, it is noted that the shape of depressions 40 are any shape required to match the shape of raised portions 26 .
- depressions 40 will be an inverse triangular shape.
- connection areas 42 are preferably flat and match the profile of valleys 28 of anti-tamper nut 10 .
- the spacing between the center lines adjacent depressions 40 preferably positions each depression 40 over a respective raised portion 26 such that the entire tooth portion 38 engages angled outer surface 16 of anti-tamper nut 10 .
- tooth portion 38 generally defines an inner diameter of nut engagement area 36 .
- nut engagement area 36 has a first face 44 and a second face 46 .
- the angle of tooth portion 38 connecting first face 44 to second face 46 preferably matches the angle of angled outer surface 16 as described previously.
- nut engagement area 36 has an opening area at the mating portion 34 of the anti-tamper attachment and removal device 30 to allow easier access to anti-tamper nut 10 .
- the degree of this opening can vary from that shown in FIG. 4 and can be completely closed.
- as many raised portions 26 of anti-tamper nut 10 are engaged by tooth portion 38 to reduce the amount of force on each individual raised portion 26 . Therefore, the more closed the opening area is, the more raised portions 26 are engaged by tooth portions 38 .
- anti-tamper nut 10 is threadingly attached to threaded member 48 to secure first element 50 to second element 52 .
- Threaded member 48 is a bolt or other fastening member and is attached to second element 52 .
- Threaded member 48 extends perpendicularly from the face of second element 52 and passes through an aperture in first element 50 .
- anti-tamper nut 10 is started on the threads of threaded member 48 by using chamfer 20 as a guide for alignment.
- tooth portion 38 of anti-tamper attachment and removal device 30 is mated with angled outer surface 16 of anti-tamper nut 10 .
- anti-tamper attachment and removal device 30 is rotated to drive anti-tamper nut 10 along threads of threaded member 48 .
- the interference between each depression 40 and respective raised portion 26 provides the requisite interference to transmit force from anti-tamper attachment and removal device 30 to anti-tamper nut 10 .
- anti-tamper attachment and removal device 30 is rotated in an opposite direction to unscrew anti-tamper nut 10 from threaded member 48 .
- FIG. 8 illustrates a second embodiment of an attachment and removal device 130 .
- attachment and removal device is depicted as a socket that fits to a impact or air wrench 140 .
- An opposite end of the attachment and removal device 130 is engaged with anti-tamper nut 10 .
- the attachment and removal device 130 has a tooth portion 38 having a similar structure as described above. Accordingly, rotation of the attachment and removal device 130 by the impact or air wrench 140 causes rotation of the anti-tamper nut 10 .
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The present invention provides an anti-tamper nut that has a threaded bore and an angled outer surface. The angled outer surface has a plurality of ribs extending from a first face to a second face of the nut. A wrench adapted to mate with the outer surface of the nut rotationally drives the nut along the threads of a threaded member.
Description
- The present invention relates generally to an anti-tamper nut, and more particularly, to an anti-tamper nut that utilizes an angled surface and plurality of ribs to resist unauthorized removal.
- Conventionally, fasteners have been used in a wide array of applications that permeate every type of industry. Many types of fasteners exist that include a threaded portion, such as a bolt, and a nut that threads thereround. The nut usually has a series of flattened faces adapted to engage with parallel inner sides or a channel of a mating wrench for rotatably securing and unsecuring the nut to the threaded member.
- In many instances, it is desirable that unauthorized individuals are unable to remove the nut, and that only specified individuals have the ability for removal. Such instances are widely found in automotive component applications. To prevent auto theft and auto component theft, vehicle and vehicle component manufacturers many times design fasteners requiring a specific wrench, similar to a key, to remove the fastener. The wrench can then be provided to the vehicle owner, so that the vehicle owner can remove the fastener when required to change tires or other components on the vehicle. In some instances, the vehicle manufacturer retains the wrench to prohibit the vehicle owner from removing or tampering with the fastener, as improper adjustment of engine or other components can cause damage.
- While this has served well to prevent unauthorized tampering, drawbacks exist. Specifically, unauthorized individuals have attempted to remove or adjust fasteners even when prohibited to do so by the owner or manufacturer. To accomplish this, unauthorized individuals sometimes use pipe wrenches, pliers, or other high force devices to grip the outer surface of the nut with sufficient pressure to generate friction and allow unfastening of the nut from the threaded member. As a result, components have been damaged due to improper adjustment of the fastener, or worse, stolen by an unauthorized individual. The present invention was developed in light of these and other drawbacks.
- To address these and other drawbacks, the present invention provides a device for securing a first element to a second element that uses a nut. The nut has the large face disposed parallel to and opposite from a small face. The outer circumference of the large face is connected to the small face by an outer surface. The outer surface is tapered. A bore disposed through the center of the nut that has a plurality of threads for securing to a threaded member. A plurality of ridges extend from the large face to the small face along the outer surface at the same taper angle as the outer surface. As a result, the angled outer face makes it difficult for tools such as pliers, vice grips or pipe wrenches to be used by an unauthorized user for removing the nut.
- In another aspect, a kit having component parts includes a nut having a tapered outer surface and a threaded bore, and a wrench adapted to engage the outer surface of the nut. In this way, only users possessing the wrench can attach or remove the nut from a thread member.
- In yet another aspect of the present invention, an assembly is provided comprising a first element attached to a second element. The threaded member extends from a face of the first element and through an aperture in the second element. The second element has a first face abutting the face of the first element and a second face disposed opposite the first face. A nut is threaded to the threaded member and clamps against the second face of the second element. The nut includes an angled outer surface and a threaded bore extending therethrough. As a result, the second element is clamped between the nut and the first element and the tapered outer surface of the nut prevents unauthorized users from adjusting or removing the nut on the threaded member.
- Further areas of applicability of the present invention will become apparent from the detailed description provided hereinafter. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
- The present invention will become more fully understood from the detailed description and the accompanying drawings, wherein:
- FIG. 1 is a perspective view of an anti-tamper nut according to the present invention;
- FIG. 2 is a cross-sectional view of an anti-tamper nut along II-II in FIG. 1 according to the present invention;
- FIG. 3 is an exploded view of III in FIG. 1 according to the present invention;
- FIG. 4 is a top view of an anti-tamper nut removal device according to the present invention;
- FIG. 5 is a cross-sectional view through V-V in FIG. 4;
- FIG. 6 is a magnified view of VI in FIG. 4;
- FIG. 7 is a cross-sectional view of an anti-tamper nut, anti-tamper nut attachment device and bolt member in operation according to the present invention; and
- FIG. 8 is a side view of a second embodiment of an anti-tamper attachment and removal device according to the present invention.
- The following description of the preferred embodiments is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.
- Referring now to FIG. 1 and FIG. 2, an
anti-tamper nut 10 according to the present invention is shown and described.Anti-tamper nut 10 has alarge face 12 disposed in a parallel relationship with asmall face 14. An angledouter surface 16 is defined by the surface that extends, in an increasing diameter, fromsmall face 14 tolarge face 12. Throughbore 18 generally includes a central threadedportion 22 extending through the center ofanti-tamper nut 10. Central threadedportion 22 has a series ofthreads 24 for threadingly engaging a mating bolt member (as will be discussed in greater detail with respect to FIG. 7), which can include right handed or left handed threads. Throughbore 18 extends through theanti-tamper nut 10 and terminates atlarge face 12 andsmall face 14.Chamfers 20 are provided that connect each face to throughbore 18 and assist in alignment ofanti-tamper nut 10 with a mating screw member as well as reducing corner stresses. - Referring to FIG. 1, angled
outer surface 16 is shown having a plurality of raisedportions 26 connected byvalleys 28. Each raisedportion 26 is preferably rounded and preferably number 15 in total. Each raisedportion 26 andvalley 28 are angled at an angle of inclination as described for angledouter surface 16. Preferably, the angle of inclination A of angledouter surface 16 is nineteen degrees. However, the angle of inclination can be angled at any angle greater than zero degrees. Specifically, the angle of inclination A can be 1 through 89 degrees. - Moreover, the greater the angle of inclination, the less probable that a device such as a pipe wrench, vice grips or channel locks can be used by an unauthorized person to grip
outer surface 16 and removeanti-tamper nut 10 from a bolt. - Referring now to FIG. 3, a magnified view of III in FIG. 1 is shown and described. In FIG. 3, raised
portions 26 are shown as rounded bumps andvalleys 28 are illustrated as flat connecting portions. Theseportions 26 preferably have a radius of 0.6-0.7 millimeters. The rounded surface, again, helps ensure that only an accompanying wrench used by an authorized individual is able to removeanti-tamper nut 10 from a threaded member such as a bolt. However, it is also possible to use other shapes for raisedportion 26, including other rounded shapes, triangular shapes and trapezoidal shapes as all of these shapes have angled edges that allow slip if anything other than a matching wrench is used. Additionally, as the use of a rounded or angled shape is a preferred embodiment, the use of rigid or flat shapes including squares or rectangulars can also be used. - Referring now to FIG. 4, an anti-tamper attachment and
removal device 30 is shown and described. Anti-tamper attachment andremoval device 30 includes anarm 32 and amating portion 34.Mating portion 34 includes anut engagement area 36 and atooth portion 38.Nut engagement area 36 provides structural support totooth portion 38 when engaged with anti-tamper nut 10 (as will be described) and is preferably forged or machined as one piece witharm 32.Tooth portion 38 has a plurality ofdepressions 40 andconnection areas 42.Depressions 40 are preferably circular and match the radius of curvature of raisedportions 26 ofanti-tamper nut 10. However, it is noted that the shape ofdepressions 40 are any shape required to match the shape of raisedportions 26. Accordingly, if raisedportions 26 are triangular, then depressions 40 will be an inverse triangular shape. Likewise,connection areas 42 are preferably flat and match the profile ofvalleys 28 ofanti-tamper nut 10. The spacing between the center linesadjacent depressions 40 preferably positions eachdepression 40 over a respective raisedportion 26 such that theentire tooth portion 38 engages angledouter surface 16 ofanti-tamper nut 10. - Referring to FIG. 6, a magnified view of
depressions 40 andconnection areas 42 is shown. Referring to FIG. 5,tooth portion 38 generally defines an inner diameter ofnut engagement area 36. As shown,nut engagement area 36 has afirst face 44 and asecond face 46. The angle oftooth portion 38 connectingfirst face 44 tosecond face 46 preferably matches the angle of angledouter surface 16 as described previously. As shown in FIG. 4,nut engagement area 36 has an opening area at themating portion 34 of the anti-tamper attachment andremoval device 30 to allow easier access toanti-tamper nut 10. However, it is noted that the degree of this opening can vary from that shown in FIG. 4 and can be completely closed. Preferably, as many raisedportions 26 ofanti-tamper nut 10 as possible are engaged bytooth portion 38 to reduce the amount of force on each individual raisedportion 26. Therefore, the more closed the opening area is, the more raisedportions 26 are engaged bytooth portions 38. - Referring now to FIG. 7, the attachment of
anti-tamper nut 10 to a threadedmember 48 by using the anti-tamper attachment andremoval device 30 is shown and described. In a non-limiting example of FIG. 7,anti-tamper nut 10 is threadingly attached to threadedmember 48 to securefirst element 50 tosecond element 52. Threadedmember 48 is a bolt or other fastening member and is attached tosecond element 52. Threadedmember 48 extends perpendicularly from the face ofsecond element 52 and passes through an aperture infirst element 50. During attachment,anti-tamper nut 10 is started on the threads of threadedmember 48 by usingchamfer 20 as a guide for alignment. Onceanti-tamper nut 10 is started on the threads of threadedmember 48,tooth portion 38 of anti-tamper attachment andremoval device 30 is mated with angledouter surface 16 ofanti-tamper nut 10. Once mated, anti-tamper attachment andremoval device 30 is rotated to driveanti-tamper nut 10 along threads of threadedmember 48. The interference between eachdepression 40 and respective raisedportion 26 provides the requisite interference to transmit force from anti-tamper attachment andremoval device 30 toanti-tamper nut 10. For removal, anti-tamper attachment andremoval device 30 is rotated in an opposite direction to unscrewanti-tamper nut 10 from threadedmember 48. - As a result of having a plurality of raised
portions 26, if an unauthorized user attempts to drive only one or two of the raised portions with a tool such as vice grips, the large amount of pressure over the small area of one or two raisedportions 26 will leave marks therein. Accordingly, either the manufacturer or the vehicle owner will realize by the markings that an unauthorized individual has attempted to adjust the torque on theanti-tamper nut 10. Moreover, as angledouter surface 16 is angled, a device such as vice grips or pliers, having flattened faces, will be unable to grip the angled face ofanti-tamper nut 10. Lastly, the rounded surface of each raisedportion 26 makes it difficult to use a device such as a screw driver to attempt to removeanti-tamper nut 10. - FIG. 8 illustrates a second embodiment of an attachment and
removal device 130. Here, attachment and removal device is depicted as a socket that fits to a impact orair wrench 140. An opposite end of the attachment andremoval device 130 is engaged withanti-tamper nut 10. The attachment andremoval device 130 has atooth portion 38 having a similar structure as described above. Accordingly, rotation of the attachment andremoval device 130 by the impact orair wrench 140 causes rotation of theanti-tamper nut 10. - The description of the invention is merely exemplary in nature and, thus, variations that do not depart from the gist of the invention are intended to be within the scope of the invention. Such variations are not to be regarded as a departure from the spirit and scope of the invention.
Claims (14)
1. A nut for securing a first element to a second element, the device comprising:
a large circular face;
a small circular face disposed opposite to said large circular face;
an outer surface connecting an outer edge of said large circular face to an outer edge of said small circular face, said outer surface having an angle inclination with respect to an axis of rotation of said nut, said angle of inclination increasing from said smaller circular face to said larger circular face; and
a threaded bore passing through and formed in said nut for threadingly engaging a threaded member; and
a plurality of raised portions disposed along said outer surface extending between said small circular face and said larger circular face.
2. The nut as claimed in claim 1 , wherein said raised portions have rounded surfaces.
3. The nut as claimed in claim 2 , wherein said number of raised portions is fifteen, each of said raised portions being equally spaced around said outer surface and number 15 in total.
4. A kit having component parts capable of being engaged for attaching a first element to a second element, the kit comprising the combination of:
a nut having a threaded bore and a tapered outer surface, said tapered outer surface having a plurality of raised portions extending from a first surface of said nut to a second surface of said nut; and
an anti-tamper attachment and removal device having a nut engagement area, said nut engagement area having a cut out section, a tooth portion disposed along an area of said nut engagement area forming said cut out section, said tooth portion angled to match an angle of inclination of said outer surface of said nut, said tooth portion adapted to engage said outer surface of said nut for allowing said nut engagement area to drive said nut in a rotational direction.
5. The kit as claimed in claim 4 , wherein said anti-tamper attachment and removal device further comprises an arm extending outward from an axial center of said cut out section.
6. The kit as claimed in claim 4 , wherein said anti-tamper attachment and removal device is a socket for a power tool.
7. An assembly comprising:
a first element;
a second element having an aperture, said second element having a first surface proximate said first element and a second surface oppositely disposed from said first surface;
a threaded member extending from said first element and passing through said aperture in said second element; and
a nut having a threaded bore and a tapered outer surface, said nut having a large face and a small face, said large face abutting said second surface of said second element, said threaded bore threadingly engaged to said threaded member to clamp said second element between said first element and said nut.
8. The assembly as claimed in claim 7 , wherein said angled outer surface includes a plurality of raised portions extending from said large face to said small face.
9. The assembly as claimed in claim 8 , wherein each of said plurality of raised portions has a rounded surface.
10. The assembly as claimed in claim 9 , wherein said plurality of raised portions are evenly distributed around said angled outer surface.
11. The assembly as claimed in claim 10 , wherein said number of raised portions is at least 15.
12. The assembly as claimed in claim 7 , further comprising an anti-tamper attachment and removal device having a tooth portion adapted to mate with said tapered surface of said nut for providing rotation of said nut.
13. The assembly as claimed in claim 12 , wherein said anti-tamper attachment and removal device is a wrench.
14. The assembly as claimed in claim 12 , wherein said anti-tamper attachment and removal device is a socket for a power tool.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US10/087,294 US6619161B1 (en) | 2002-02-28 | 2002-02-28 | Anti-tamper nut |
Applications Claiming Priority (1)
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US10/087,294 US6619161B1 (en) | 2002-02-28 | 2002-02-28 | Anti-tamper nut |
Publications (2)
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US20030159546A1 true US20030159546A1 (en) | 2003-08-28 |
US6619161B1 US6619161B1 (en) | 2003-09-16 |
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US10/087,294 Expired - Fee Related US6619161B1 (en) | 2002-02-28 | 2002-02-28 | Anti-tamper nut |
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US20160325409A1 (en) * | 2015-05-09 | 2016-11-10 | Real Joseph Lanteigne | Loose Nut the Right Tool |
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US6045311A (en) * | 1998-09-10 | 2000-04-04 | Chang; Peter Jenn-Hai | Bolt, nut, and wrench in taper design for turning the bolt and the nut |
US6293744B1 (en) | 2000-06-14 | 2001-09-25 | Illinois Tool Works Inc. | Fastener system including a fastener and a cap |
US6321625B1 (en) * | 2001-03-26 | 2001-11-27 | Marla K. Fernandez | Wrench for myers nut |
-
2002
- 2002-02-28 US US10/087,294 patent/US6619161B1/en not_active Expired - Fee Related
Cited By (7)
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US20120125162A1 (en) * | 2010-11-24 | 2012-05-24 | Long Khac Nguyen | Combination er wrench |
US9452511B2 (en) * | 2010-11-24 | 2016-09-27 | Last Tool Factory Llc | Combination ER wrench |
EP3162504A1 (en) * | 2014-09-05 | 2017-05-03 | Matthias Kronenberg | Tool component for the transmission to nuts or not or threaded rod |
US20160325409A1 (en) * | 2015-05-09 | 2016-11-10 | Real Joseph Lanteigne | Loose Nut the Right Tool |
GB2543270A (en) * | 2015-10-12 | 2017-04-19 | Lo Jerrick | Locking nut assembly |
GB2543270B (en) * | 2015-10-12 | 2019-05-22 | Lo Jerrick | Locking nut assembly |
US20230105702A1 (en) * | 2021-10-06 | 2023-04-06 | James Clary | Spline wrench |
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