Abstract: A method for molding amorphous polyether ether ketone including steps of preparing a molten mass including polyether ether ketone, cooling a mold assembly to a temperature of at most about 200° F., and injecting the molten mass into the cooled mold assembly.

Abstract: A driver for applying torque to threaded fasteners has a plurality of teeth extending along and projecting outwardly from a longitudinal axis of a body on which the teeth are located. The teeth have a helical twist about the longitudinal axis. Each tooth has an angularly oriented engagement surface which is engageable with similarly angularly oriented surfaces within recesses in the head of a compatible fastener. When the driver engages the recesses torque applied to the driver draws the driver deeper into the recesses as the engagement surfaces react against and slide over the angularly oriented surfaces within the recesses. The torque also causes the fastener to turn and advance or retract depending upon the sense of the torque and the angles of the engagement surfaces and the angles of the surfaces within the recesses. The fastener and its method of manufacture are also disclosed.

Abstract: A fastener system includes a bolt and a retainer. The bolt has a first end and an opposing second end, wherein a recess having a predetermined shape is defined in the first end of the bolt. The retainer includes a first end having a predetermined shape configured to be inserted within the recess in the first end of the bolt and a second end configured to couple about the second end of the bolt. A method of fastening parts together with the fastener system includes inserting the first end of the retainer into the recess of the bolt, deflecting and/or rotating the retainer in a direction to bring the second end of the retainer into proximity with the second end of the bolt, and securing a nut to the bolt.

Abstract: Wood screw for predrilling-freely inserting into a wood base, in particular into a massive wood base, wherein the wood screw comprises a shaft portion with a thread which is self-cutting in wood, a screw head which is connected to the shaft portion directly or indirectly at a back side, and a screw tip which is connected to the shaft portion directly or indirectly at a front side, for predrilling-freely penetrating into the wood base, wherein at the shaft portion between neighboring thread turns, portions are formed which taper towards the screw tip.

Abstract: Fasteners are inserted into a stack of members and terminated with parts having at least one of a dry dielectric coating and a dry dielectric seal at select locations to protect against electromagnetic effects (EME).

Abstract: A fastening system includes a fastener having a head portion and a shaft portion, wherein the head portion has a recess (e.g., a removal tool recess), and an insert (e.g., a plastic insert) having an insert shape substantially equal to the recess shape and an insert thickness substantially equal to or less than the recess depth, wherein the insert is configured to removeably seat within the recess of the head portion. In this way, the insert may be later removed from the recess, allowing easy tool access even in applications where an overlying fairing material or other such conformal coating is used.

Abstract: Punch pins which have further extending lobes, and which are designed to punch sockets that have deeper flutes while not having lobes which extend further toward a center axis of the fastener. Using such a punch pin to form a socket in a fastener provides that the resulting socket has flutes which are deeper than they otherwise would be, without having to provide corresponding lobes which extend further toward the center axis of the socket. This extra deepness in the flutes helps to provide extra room for a coating to deposit.

Abstract: A fastener comprising a fastener body and a fastener head is disclosed. The fastener body has a threaded portion and defines a longitudinal axis. The fastener head is arranged at one end of the fastener body, and comprises a tool engaging portion. The tool engaging portion comprises a plurality of alternating lobes and flutes forming a multilobular surface pattern, each lobe having a driven surface arranged to engage with a driving surface of a tool, and a trailing surface arranged opposite to the driven surface. The driven surface and the trailing surface extend substantially parallel to the longitudinal axis defined by the fastener body. The trailing surface of at least one lobe is provided with a modified zone in which a diameter of the lobe is increased, said modified zone providing a wedging effect between the tool engaging portion and a tool. In the fastener of the invention wobble between the fastener and a tool is significantly reduced.

Abstract: A torque transmission driver has a first end portion adapted to receive and transmit torque from a torque generation source, and a second end portion including a shaped tapered bit having drive surfaces with an alternating series of five or six lobes and troughs about a rotational axis, having a taper angle between 15 and 65° from the rotational axis operable to engage corresponding drive surfaces in a plurality of at least two size fasteners, the tapered drive surfaces of the bit comprising a first tapered portion operable to engage drive surfaces of a first sized fastener and a second tapered portion operable to engage drive surfaces of a second sized fastener, the drive surfaces of the second sized fastener being larger than the drive surfaces of the first sized fastener. The taper angle may be nominally 52° from the rotational axis.

Abstract: A fastener system including a threaded fastener having a slot formed in the fastener head. Facets are formed in the slot walls, each facet having an angle of less than ninety degrees with respect to the base of the slot such that the slot has a variable width and at least a portion of the width of the base is greater than the width of the opening of the slot. A driver bit includes a blade configured to be inserted into the slot of the fastener. At least a portion of the free end of the blade has an increased width such that the blade is locked within the slot of the fastener when torque is applied to the driver bit.

Abstract: A fastener system including a threaded fastener having a slot formed in the fastener head. Facets are formed in the slot walls, each facet having an angle of less than ninety degrees with respect to the base of the slot such that the slot has a variable width and at least a portion of the width of the base is greater than the width of the opening of the slot. A driver bit includes a blade configured to be inserted into the slot of the fastener. At least a portion of the free end of the blade has an increased width such that the blade is locked within the slot of the fastener when torque is applied to the driver bit.

Abstract: The invention relates to hand tools and to threaded fasteners, and comprises a screw and corresponding screwdriver. The screw comprises a head and a threaded working end. The head slot for inserting the screwdriver is made in the form of a “dove tail.” The working section of the screwdriver for screwing and unscrewing the screw is made as a mirror image of the screw head slot, with the same angle of slope. The invention lengthens the life of screwdrivers and screws and their serviceability.

Abstract: A surgical screw and driver arrangement whereby the end of the driver is vertically inserted and removed from the slotted end of the surgical screw and whereby the end of the driver is attached to and removed from the slotted end of the surgical screw by a quarter turn in the clockwise and counterclockwise directions. The driver includes an inner shaft connecting with a center locking cam at one end of the driver and an outer shaft that connects with a pair of blades, one on each side of the locking cam. The surgical screw includes a slotted head at one end and a tapered threaded rod attached to the head. A pair of dovetail slots extending perpendicular within the slotted head receives the locking cam when the driver inner shaft is rotated a quarter turn clockwise to fasten the surgical screw to the end of the driver.

Abstract: A screw has a head portion and a threaded portion. The head portion has an undercut slot extending across it. The slot has a flat floor and sloping sides and the width of the floor of the slot is greater than the width at the top opening of the slot. A matching bit has a shank portion and a flat portion. The flat portion of the bit is not as wide as the top opening of the slot. The flat portion has a foot extending from each end.

Abstract: A tamper proof threaded fastener construction (10) comprising a conventional elongated threaded fastener body member (20) having an enlarged head member (30) provided with a contoured and tapered frangible member (40) which is used to drive the fastener construction (10) in a rotatable fashion, and when the frangible member (40) is removed leaves an irregular surface (45) which prevents the fastener construction (10) from being rotatably driven in any direction.

Abstract: A coupling which consists of first and second solid members. In one form a first coupling element has a recess therein and has a first boss disposed in the recess. The first boss and the recess each have a geometric axis. The axes of the recess and the first boss are disposed in generally parallel relationship. The first boss is disposed in eccentric relationship to the recess, the recess having a peripheral surface which is axially tapered. The coupling includes a second coupling element having a second boss having a peripheral surface dimensioned and configured for engagement with the recess. The second boss is an annulus and has a hole therein for receiving the first boss. The hole and the second boss each have a geometric axis, the axes of the hole and the second boss being generally aligned. The second boss has an exterior surface which is axially tapered and dimensioned for engagement with the recess. In one form of the invention one of the members is a furniture body and the other is a furniture leg.

Abstract: A nozzle for a drill bit comprises a nozzle body and a ring for securing the nozzle body in a threaded cavity of the drill bit. The nozzle body includes a fluid passage of the orientable type. The ring comprises an externally threaded sleeve and a cap bonded to a front end thereof. The cap and nozzle body are formed of harder materials than the threaded sleeve. The cap contains dove-tail shaped slots for receiving complementarily shaped projections on a tool to enable the ring to be rotated relative to the nozzle body. By threading the ring into the cavity, the nozzle body can be secured in the cavity with its fluid passage oriented in the desired final orientation.

Abstract: A screw driver has a handle, shaft and blade with the bottom edge of the blade being flat and having flat sides which incline inwardly from the bottom edge. To turn the screw, the screw driver is placed with its bottom edge in the gap between protruding (raised) quadrant sectors of the screw head and turned 45.degree.. The flat inwardly inclined sides of the screw driver act against cut-back flat sides of the protruding sectors to cam the screw driver toward the screw head and rotate the screw.

Abstract: A screw adapted to be driven by an ordinary straight-bladed screwdriver, the head of the screw having a cylindrical socket formed in the top surface of the head thereof coaxially with the screw shank adapted to receive the driver blade therein, the wall of the socket preventing lateral slippage of the driver blade from the socket and permitting turning of the blade, portions of the wall being offset resiliently inwardly to inhibit turning of the blade, and so configurated that a partial turn of the blade causes it to be gripped between portions of the offset wall to hold the screw releasably on the blade, so that the screw may be inserted in positions of difficult access, to resist rotation of the blade, more strongly after a further partial turn of the blade, whereby the screw may be driven by the blade with a suitable torque, and to yield completely on the application of a still greater torque, whereby to limit the maximum torque applicable to the screw by the screw driver.