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| Number | Title | Issue Date |
| 7335208 | Tightening instrument for orthopaedic surgery of the spine The tightening instrument is made up of two parts (2,4) joined to each other by means which are designed to automatically uncouple the said two parts (2,4) by shearing rupture of a pin (8) when a predetermined tightening torque is reached, a fir... | 02/26/2008 |
| 7299725 | Torque fastening devices and apparatuses Fastening devices and apparatuses for providing an appropriate amount of torque in a fastening system. Particularly, fastening devices and apparatuses configured to inform a user when an appropriate amount of torque as been used when fastening the fastening device t... | 11/27/2007 |
| 7204667 | High strength bolted structure and method of securing nut and torque-shear type high strength bolt and joining method using same A join structure comprises a box section column and spit T-section joined by a high strength bolt and a method secures a nut to an inside of the box section column. A Torque-Shear type high strength bolt is tightly tightened by a controlled tension and a joining met... | 04/17/2007 |
| 7172380 | Wheel nut assembly A wheel nut assembly includes a stud (1), a main wheel nut (4) mountable on threads (3) provided on the stud, and a retaining nut (6) engageable with threads (5) provided on the stud to prevent accidental loosening of the wheel nut... | 02/06/2007 |
| 7125213 | Washer, fastener provided with a washer, method of and power tool for fastening objects A washer has a body having an axis and provided with a first bearing face surface located at one axial side and adapted to cooperate with a nut, a second bearing face surface located at an opposite axial side and adapted to cooperate with an object, at least one thi... | 10/24/2006 |
| 7097404 | Auto-torque, tamper-proof screws A screw having a screw-threaded shank and a circular head, the head being provided with three radially extending screwdriver tip receiving portions defined between three first, off central integrally formed projections designed to become shaved-off the screw head by... | 08/29/2006 |
| 7001109 | Apparatus for ground support An improved apparatus for ground support comprising a tensionable reinforcing member including at least one nut threadably receivable by the tensionable reinforcing member. The nut body comprises a squared portion and a convex hemispherical portion. The nut includes... | 02/21/2006 |
| 6764404 | Drive shaft coupling device An improved drive shaft connecting device, including a novel shear bolt (50) for connecting two ends or flanges (42, 44) of the drive shaft connecting device in a manner whereby the separate parts of the drive shaft connecting device are securely conne... | 07/20/2004 |
| 6764114 | Lead seal assembly A sealing assembly designed to co-operate with a screw provided with a tightening slot by being mounted therein in such a manner that once said assembly is sealed the tightening slot is hidden in a manner that is not reversible except by destroying the seal, and fur... | 07/20/2004 |
| 6739631 | Torque-limiting bolt-and-nut assembly A torque-limiting bolt-and-nut assembly is provided for actuating a pipe-pressing member in order to secure two pipe ends together. The bolt includes a threaded shank, a secondary drive head, and a shearable drive head designed to be sheared-off by a torque exceedin... | 05/25/2004 |
| 6698980 | Rock stabilizing apparatus and method A rock stabilizing apparatus and method for use with adhesion materials has a tensionable reinforcing member having a threaded portion at one end and an opposite end. The member-threaded portion threadably receives a nut and a bearing plate is retained on... | 03/02/2004 |
| 6406074 | Destructible locking device A locking device is disclosed for interlocking two members having aligned openings extending therethrough. The device includes a hollow cap and a pin with an enlarged head at one end and a nose at the opposite end. The pin is insertable through the aligne... | 06/18/2002 |
| 5927917 | Self-torquing nut A tamper-proof, precision, torque limiting nut device is disclosed. The device comprises an inner collar member having a threaded bore to receive a bolt, stud or the like and an outer sleeve member interconnected to the collar by pins or by welds having a... | 07/27/1999 |
| 5807048 | Sealing fastener with ultrasonic identifier and removal attempt indicator, and ultrasonic reading device for same A sealing fastener includes a unique identifier device for the individual fastener that enables ultrasonic identification of the device using an ultrasonic fault measuring system, and a frangible element within the fastener integrated with the identifier ... | 09/15/1998 |
| 5655431 | Spring brake actuator, caging bolt assembly therefor, and method of assembly thereof A nut and bolt assembler comprises a threaded bolt (78a) having a proximal end (140) with a knurled outer surface (142). A nut (144) is press fit onto the bolt knurled proximal end (190) to prevent rotation of the nut (144) with respect to the bolt (78a).... | 08/12/1997 |
| 5567096 | Shear-pin system for logging truck bunk Embodiments of a log bunk shear-pin system are shown and described, each embodiment including a shear-pin that engages a log bunk and prevents the bunk from swiveling when the truck is being loaded or unloaded, but that releases the bunk when the shear-pi... | 10/22/1996 |
| 5256015 | Torque limiting bolt having retained shear pins Torque limiting bolt employs a number pins which shear upon the application of a predetermined torque to the bolt head. The bolt configuration insures that sheared portions of the pins are held within the bolt head to prevent undesirable scattering of the... | 10/26/1993 |
| 5011352 | Deflection type thread lock for a threaded fastener A fastener includes a threaded pin and an internally threaded collar. The threads can freely be run without impediment during tightening. After the fastener is tightened, a tool engages a shoulder on the collar and presses a deflector against the collar o... | 04/30/1991 |
| 4836727 | Torque limited pressed and forged metal nut members There is disclosed a torque limiting fastener system for forged or pressed metal nuts. The stamped metal fasteners have a central, cylindrical sleeve, an annular ledge which is dependent from one end of the sleeve, and a surrounding skirt, generally with ... | 06/06/1989 |
| 4592687 | Roof bolt An expansion bolt, particularly adapted for supporting the roof of a mine tunnel, includes an elongate stud having distal and proximal threaded ends. Coaxially mounted on the stud near the distal end is an expansion sleeve that is axially divided into a p... | 06/03/1986 |
| 4540322 | Security Device The security device consists of a bolt portion and/or a bolt fastener portion which utilize nuts which do not threadedly engage any other part, but give the impression that they do so and that they are the fastening means. These nuts turn freely as if str... | 09/10/1985 |
| 4518292 | Method and apparatus for combining resin bonding and mechanical anchoring of a bolt in a rock formation A mechanical anchor including an expansion shell and a camming plug positioned in the shell is threaded onto the end of a mine roof bolt. A roof support plate is carried on the opposite end of the bolt. The mechanical anchor is inserted in a bore hole dri... | 05/21/1985 |
| 4177352 | Shear bolt assembly for a load limiting line support for a post insulator A shear bolt assembly for a load limiting line support for a post insulator comprising a bolt having a first portion engaged with a saddle of the line support and a collar engaged by a line clamp. The collar is in abutting relation with the bolt and the c... | 12/04/1979 |
| 4167886 | Expansion dowel assembly In an expansion dowel assembly, a stud or bolt extends through an expansion sleeve with an expanding body on one end for radially spreading the sleeve and a head or first working part on the other end for applying torque. A second working part encloses th... | 09/18/1979 |
| 4144796 | Expansion dowell assembly with setting control An expansion dowel assembly includes a sleeve, a tie rod insertable into the sleeve, an expanding body connected to one end of the tie rod and an end support on its other end. A member is connected to the end support for transmitting torque to it and by v... | 03/20/1979 |
| 4097108 | Hot line clamps A hot line clamp for temporarily or permanently connecting a branch conductor to a main conductor. The clamp includes a rigid generally U-shaped body with a cylindrical boss for receiving the branch conductor. The branch line is secured in place on the gr... | 06/27/1978 |
