Abstract: The disclosure relates to medical devices and methods of manufacturing medical devices. An orthopedic screw includes a shaft having a proximal end, a distal end, a body extending between the proximal end and the distal end, and a longitudinal axis. A distal thread on an external surface of the shaft extends around the longitudinal axis. A head portion includes a series of cutting teeth that lie on a plane that is perpendicular to the longitudinal axis of the shaft. A distal tip portion defines a cutting edge.

Abstract: A fastener for removably attaching a filter material to a mounting structure includes a base and corresponding retainer. The base includes an elongate shaft having a first end and a second end, the first end including an attachment means for removably attaching the fastener to the mounting structure. The retainer is configured to be removably received onto the shaft to secure at least a portion of the filter material between the retainer and the base.

Abstract: A functional element in the form of a press-in element for attachment to a sheet metal part is disclosed which has a head part and a shaft part, the head part has a ring-like sheet metal contact surface within which is a ring-like axial recess which surrounds the shaft part at the transition of the head part into the shaft part. The shaft part has a plurality of peripherally distributed radial recesses extending in the axial direction between which are axially extending and radially projecting noses having raised material portions which form undercuts with the head part in the region of the ring-like recess, the undercuts being present at the positions of the radial recesses at their axial ends adjacent to the head part. Radially extending ribs providing security against rotation, or other anti-rotation security features, are provided in the base region of the ring-like recess.

Abstract: A clinch-type fastener is formed by simultaneously creating an undercut during the same forging that creates the head and displacer of the fastener. A fastener blank is compressed end-to-end between top and bottom dies whereby the axial compression of a blank causes the outward bulging of the shank at its midline. Simultaneously, a tapered end point and a tangential interference band are formed provided by a curvilinear-shaped bulge in the shank. As the bulge is formed an undercut is created between the bulge and a shoulder which extends downwardly from a head of the fastener. This method of formation and the fastener produced thereby are particularly suited to the manufacture of small clinch pins having a diameter in the range of 1.0 mm.

Abstract: A blind fastener comprising a body (22) and a stem (26), wherein the fastener is installed in a workpiece by applying a pulling force to the bodycausing a bulb to form at a radially expandable section of the body, the stem of the fastener comprising two waisted regions (38, 40) of reduced diameter, such that when the body of the fastener is crimped after assembly with the stem, the body is caused to form a barrel shape, whereby clearance between the body and stem is minimised

Abstract: A method of head trimming a fastener blank in a cold-forging process comprises placing a fastener blank into a bore of a punch having an end face; supporting an underside of a head portion of the fastener blank with the punch end face; moving a die having an internal passage and a trim plate with a cutting edge toward the fastener blank; shearing the head of the fastener blank with the cutting edge of the trim plate; stopping movement of the die at an extended trim position where the cutting edge lies beyond an underside of the head portion of the fastener blank; ejecting the fastener blank from the punch bore and through the die passage to an opposite side of the die; retracting the die; and removing a scrap ring from around the punch by a stripper sleeve.

Abstract: As formed from a predetermined length of carbon steel wire, such as AISI C 1062 steel wire or high-manganese carbon steel wire, in sequential forming, rolling, and austempering steps, a pin for axial, non-rotational penetration into a steel, concrete, or masonry substrate has a head, a tapered shank, a point having a tip, and a transition zone between the tapered shank and the head. The head has an outer diameter at least about 2.6 times greater than the initial diameter of the predetermined length wire. The smaller end of the tapered shank has a diameter about 0.6 times the initial diameter thereof. The larger end of the tapered shank has a diameter about 0.7 times the initial diameter thereof. The point is joined unitarily to the smaller end of the tapered shank and conforms except at the tip, which is rounded, substantially to a tangent ogive, which is tangent to the tapered shank.

Abstract: A steel pin is disclosed of a type to be forcibly driven into a steel substrate by using a powder-actuated tool. The steel pin has a substantially cylindrical shank, and a substantially sharp point which extends from one end of the substantially cylindrical shank, which conforms substantially to a tangent or secant ogive except for a substantially spherical tip having a radius in the range of approximately 0.015 inch (approximately 3.75 millimeters) to approximately 0.03 inch (approximately 7.5 millimeters), which has substantially true concentricity, which has surface-texture irregularities with a roughness-height index value not greater than approximately 30 microinches (approximately 0.76 micrometers), and which appears to be substantially free of other surface imperfections when viewed under 60.times. magnification.

Abstract: In a method of making an elongate object (49) with a head at one end and a point at the other end, a blank (49) is placed in a die (50) having a through-going channel, following which the head end is subjected to axial pressure by a tool (52), while a stop member (55) is kept engaged with the die (50) at its other end. A pre-formed head is initially provided on the blank (49) so that the head has an excess of material with respect to the size of the final head. A cavity (56) is formed in the stop member and is in extension of the through channel. When blank (49) is subjected to axial pressure the tool (52) causes flow of material in the shank of the blank (49) so that blank material flows into the cavity (56) of the stop member.

Abstract: A method and apparatus for forming a head, having a controlled predetermined shape on an end of an elongate member, such as a wire, which is formed into a fastener, where an end portion of the wire is secured in a predetermined position and axially compressed so as to expand a predetermined amount of wire material radially outwardly and thereby form the head on the wire, and where material flow is directed during axial compression so as to provide the controlled predetermined shape of the head.