A combination nut assembly includes first and second tightening nuts, each engageable with a bolt and having an interior frustum-shaped fitting socket and a dual frustoconical locking nut engageable with the bolt and elastically deformable and consists of two exterior frustum-shaped half locking nut members identical in geometric configuration and symmetrically inverted in position integrally connected together as a single part with their larger ends jointly connected and located between the first and second tightening nuts when assembled. Each half locking nut member protrudes an axial distance “e” from a bearing surface of the tightening nut in an assembled position. Axial distance “e” is defined by p>e≥α/tan θ, where: “θ” is cone generating angle; “α” is perpendicular backlash between flanks of threads of the bolt and locking nut in an ordinarily engaged position; and “p” is locking nut pitch.

A structural fastener includes a threaded rod coupler. The threaded rod coupler includes a split nut for coupling to the threaded rod.

A fastening structure inserts a threaded rod 11a of a bolt 11 through a fixing hole 12a of a to-be-fixed member 12 in a manner such that an end portion of the threaded rod protrudes from the fixing hole, and screwing a machine screw 15 with a proper torque into a nut 14 which is provided on the end portion via a washer 13. The washer has an inclined surface 13c formed on a first side 13b which faces the nut, and has a flat surface formed on a second side 13d. The machine screw is screwed into the nut in a direction such that an axis is orthogonal to the inclined surface 13c. The first side (the inclined surface) and the second side of the washer have a different surface roughness, and the first side has a smaller coefficient of friction than the second side.

A fastening structure inserts a threaded rod 11a of a bolt 11 through a fixing hole 12a of a to-be-fixed member 12 in a manner such that an end portion of the threaded rod protrudes from the fixing hole, and screwing a machine screw 15 with a proper torque into a nut 14 which is provided on the end portion via a washer 13. The washer has an inclined surface 13c formed on a first side 13b which faces the nut, and has a flat surface formed on a second side 13d. The machine screw is screwed into the nut in a direction such that an axis is orthogonal to the inclined surface 13c. The first side (the inclined surface) and the second side of the washer have a different surface roughness, and the first side has a smaller coefficient of friction than the second side.

An anchoring system for attaching equipment to a building foundation. The system includes an insert attached to the foundation by an adhesive, wherein the insert includes a flange that is positioned on a top surface of the foundation. The system also includes a washer element having a recessed portion for receiving the flange, wherein the washer also contacts the top surface. In addition, the system includes a rod element having a reference element, wherein the rod element is threadably engaged with the insert and the washer and wherein when the reference element is aligned with a reference plane indicative of level equipment, the washer is tightened against the top surface to preload the rod element to minimize deflection of the equipment.

An apparatus for measuring a speed of a vehicle having an in-wheel motor includes a lock nut part fixed to an outer portion of a rotation shaft rotated by receiving power of the in-wheel motor, and restricting movement of a bearing part positioned outside the rotation shaft; a connection part coupled to the lock nut part; a magnet part having a magnetic force, and fixed to the connection part; and a speed sensor part installed to be separated from the magnet part, and measuring rotations of the magnet part.

An apparatus for measuring a speed of a vehicle having an in-wheel motor includes a lock nut part fixed to an outer portion of a rotation shaft rotated by receiving power of the in-wheel motor, and restricting movement of a bearing part positioned outside the rotation shaft; a connection part coupled to the lock nut part; a magnet part having a magnetic force, and fixed to the connection part; and a speed sensor part installed to be separated from the magnet part, and measuring rotations of the magnet part.

A method for preloading a bearing includes releasably, threadably, and directly attaching an attaching member to a circumferential outside surface of an exposed end of a threaded shaft of an axle or spindle. A frame is axially separated from, and coupled to, the attaching member. A plurality of extensions extends from the frame axially past the attaching member toward the wheel hub assembly. An adjustment mechanism moves the frame and the plurality of extensions axially towards the wheel hub assembly to contact the wheel hub assembly and/or the bearing to apply a preload to the bearing within the wheel hub assembly.

A method for preloading a bearing includes releasably, threadably, and directly attaching an attaching member to a circumferential outside surface of an exposed end of a threaded shaft of an axle or spindle. A frame is axially separated from, and coupled to, the attaching member. A plurality of extensions extends from the frame axially past the attaching member toward the wheel hub assembly. An adjustment mechanism moves the frame and the plurality of extensions axially towards the wheel hub assembly to contact the wheel hub assembly and/or the bearing to apply a preload to the bearing within the wheel hub assembly.

A combination positive locking and prevailing torque fastener system including a fastener nut, a helical wire insert, a nut cap, and a shaft. The nut cap is longitudinally movable from an engaged position to a disengaged position such that in the engaged position the fastener nut and the nut cap are rotationally locked, and in the disengaged position the nut cap rotates independent of the fastener nut.