Abstract: A spinal implant includes a distal portion configured for penetrating tissue. A proximal portion includes a drive surface, a guide surface and a retention surface. The surfaces being disposed in a serial configuration. The retention surface is engageable with a surface of a surgical instrument to define a retention interface. Instruments, systems, constructs and methods are disclosed.

Abstract: A washer for a threaded fastener assembly and a threaded fastener assembly incorporating such a washer. The washer includes a body having a central axis including two opposed sides an outer periphery and an inner periphery defining a central aperture extending between the two opposed sides. The body incorporates an engaging face for frictionally engaging a component of the threaded fastener assembly or a work-piece. A ramp structure extends angularly between the inner periphery and one side for interacting with a further component of the threaded fastener assembly to provide a mechanical connection therebetween for resisting unthreading of the threaded fastener assembly. The engaging face is associated with the other side and extends circumferentially about the central axis. The relative positions of the engaging face and the ramp structure with respect to the central axis is such that in use torque transferred through the engaging face is greater than torque acting through the ramp structure.

Abstract: A lock nut comprising a solid nut body having a flange, from which a neck projection extends axially, being provided at its end surface with an annular shroud, from which at least two claws extend radially.

Abstract: A locking fastener apparatus for coupling objects together. The locking fastener apparatus includes a bolt having a head portion and a shaft portion with a plurality of shaft slots along the shaft. A nut has a threaded hole for threadably receiving the shaft portion of the bolt. A nut slot is centrally positioned across a width of a first side portion of the nut. The nut has a nut lock bore extending inwardly through the nut slot from the first side portion towards a central hole of the nut. The nut includes a nut lock member for movably positioning in the nut lock bore of the nut. The inner end of the nut lock member has a catch portion that is engagable with the shaft slots. A lever member pivotally coupled to the nut is positioned in the nut slot, with a first end attached to the nut lock member and a second end abutting a biasing member which biases the catch portion into one of the shaft slots to facilitate locking the two together until.

Abstract: The present invention relates to a bone screw, a method for producing the threads of the bone screw and a drill for drilling holes therefor. The bone screw is adapted for implants for fixation of bone fragments at fractures and it comprises a threaded or tapped part (16) which is adapted to be screwed into a bone fragment at the fracture. The threaded part (16) extends backwards from a front end portion (17) of the bone screw (6) to an untapped part (18) thereof and has threads (19) with the same outer diameter (YD). The threads (19) have the same pitch of thread (P) and extend from a core (21). At least front parts of the core (21) closest to the front end portion (17) of the bone screw (6) are conical and have their least diameter (MD) situated at the front end portion (17). The threads (19) have truncated crests (23) and the width (b1-b7) of the crests (23) of the threads (19) increases in backwards direction from the front end portion (17).

Abstract: A bone screw having a continuously varying pitch includes a tapered root portion having a relatively small diameter on a leading end of the screw and a larger trailing diameter. The pitch of the screw decreases between the leading and trailing ends thus causing the bone fragments in a fracture to be drawn together when the screw is installed across the fragments. The radially outer diameter of the threads increases between the leading and trailing ends thus causing each successive thread portion to cut into bone radially outwardly from the preceding thread portion thereby providing uncut bone in which the succeeding threads can gain purchase.

Abstract: The bolt, in the one-way nut and bolt combination, includes a head, a stem, and bolt threads on said stem. A longitudinal channel is defined on the bolt stem by a plurality of notches extending through the crests of the threads. In one embodiment, each notch is defined by a radially aligned surface and an angularly displaced surface. The nut, in one embodiment, has a threaded bore that is complimentary to the bolt thread and includes at least one longitudinal cut-out. The nut further includes a compressible tine extending into the cut-out. The compressible tine has a body portion and a substantially radially aligned distal end portion. The distal end portion of the tine and the cut-out defines a narrow mouth leading to a wider throat deeper in the cut-out. The nut thread and the bolt thread cooperatively permit a user to translate the nut along the bolt threads by means of one-way rotation.

Abstract: A locking device for holding a hub bearing on a spindle. When locking the hub bearing into place, the wheel which sits on the hub and rotates around the spindle is also stabilized. The locking device replaces the traditional circular three-piece combination fastener predominately used in the commercial trucking industry. This locking device can be utilized as a replacement on spindles already on the highway, or it can be incorporated at the manufacture of the tractor or the trailer. And the present locking device can be utilized on any compatibly grooved spindle.

Abstract: A device for changing drop-style handlebars between a downward or racing position and a touring or general use position, comprising a coupler including two mutually rotatable members, attached respectively to a free or gripping part of a handlebar and to a central part of the handlebar which is secured to a steering post.