Abstract: A faying plate having a clearance hole is fastened to a tapping plate having a tapping hole by a fastener having a shank with a tapered tip and with a self-tapping thread. The shank, which defines an axis, is adapted to tap a complementary thread around the tapping hole, via the self-tapping thread, when the fastener is driven rotatably. The fastener has a unitary head with a bearing portion having a peripheral edge and a having surface facing the shank, flaring outwardly toward the shank, and frusto-conical at a conical angle of about 5.degree. relative to a plane perpendicular to the axis. Eight torque-absorbing ribs project from the clamping surface, are spaced at regular intervals about the axis, and have ridges that lie on an imaginary, frusto-conical surface flaring outwardly toward the shank at a conical angle of about 1.degree. relative to a plane perpendicular to the axis and at a conical angle of about 4.degree. relative to the clamping surface. Each rib has a depth from not less than 0.

Abstract: A wedge-action lock washer assembly in which a pair of washers have cam surfaces disposed in a face-to-face relationship. A sleeve-like keeper is permanently disposed in the central opening of the two washers and has a pair of annular lips engaging the two washers to permit the two washers to move with respect to one another but preventing their separation from the keeper.

Abstract: An improved plate/fastener assembly includes an elongated fastener having a first set of threads adjacent the tip and a second set of threads adjacent the head. The first set of threads has a diameter smaller than that of the second. The fastener is employed with a plate which includes a stress plate portion having a hub extending downwardly therefrom. The hub includes an opening extending therethrough which receives the fastener. The first set of threads will engage with a metal roof deck to hold the fastener in place, while the second set of threads engages with the plate to hold the plate in place. The lower face of the plate includes a plurality of ribs adapted to engage with an insulation material to prevent rotation of the plate. Each of the ribs presents a concave configuration in the direction of rotation of the plate to disengage same from the fastener.

Abstract: A torque-absorbing rotary threaded fastener for joining metal panels has a stripping torque sufficiently in excess of its driving torque to ensure that it will be relatively unlikely to be stripped when mechanically driven home. The fastener has a clamping face which includes a number of polyhedral nibs extending axially therefrom and separated from one another by substantially planar uninterrupted portions of the clamping face. The nibs include a leading wall and a trailing wall, facing in the direction of tightening and opposite thereto, respectively. The leading wall may be inclined at a steeper angle with respect to the plane of the clamping face than is the trailing wall, or vice versa. The leading wall and the trailing wall meet to form an apex which is also inclined with respect to the plane of the clamping face, so that the nibs increase in axial height as one views outward toward the periphery of the clamping face.

Abstract: A lock washer, a locking fastener assembly, and a method of providing a secure, inexpensive fastener joint. The lock washer has a convexly conical upper surface including circumferentially spaced cam surfaces separated by radial shoulders and a concavely conical undersurface. The washer is hardened relative to the associated nut so that as the washer and a nut are tightened together the upper face of the washer acts as a die which presses into the underface of the nut to form a mirror mating image of the conical upper surface of the washer on the underface of the nut. The fully torqued nut and washer define coacting ramp surfaces on the underface of the nut and the upper face of the washer which act upon any tendency of the nut to move in a loosening direction to increase the overall height of the nut and the washer so as to further tighten the joint. The washer is hardened to ensure that the surface of the washer cuts as a die into the lower surface of the nut.

Abstract: A belt adjusting device for "V" belts which uses a gear made integrally with a nut, in cooperation with a locking mechanism, and gear teeth on a plate to produce relative movement between the plate and the mount, thus tensioning or loosening the "V" belt as desired, and allowing it to be locked into position with the locking mechanism, once adjusted.

Abstract: A threaded fastener is provided having a head for accommodating a tool for rotating the fastener. A plurality of ribs culminating in teeth are provided under the head for engaging the material into which the fastener is inserted, each rib and tooth having a ramp surface and a brake surface, the ribs being oriented for inhibiting either clockwise rotation or counter-clockwise rotation of the fastener by torque created through contact of the brake surfaces with the material. The ribs are formed on the fastener during the heading process by means of a matched die set.

Abstract: A self-locking fastener having a bearing surface comprising a plurality of sets of serrations arranged to penetrate a workpiece such that, while a resistance to the loosening of the fastener from the workpiece is created, the marring of the workpiece surface is minimized. Use of the fastener is particularly advantageous if the workpiece consists of soft materials such as cast-aluminum or non-heat treated carbon steels. Each set of serration, when viewed as a profile, includes a downwardly inclined surface, a relatively deeper serration and a relatively shallower intermediate serration. The intermediate serration controls the depth of the penetration into a workpiece.

Abstract: There is provided a flanged drive-head lock washer for use in combination with a wedge-action-type fastener, wherein the fastener includes a bolt or screw member having a cam nut or cam head. The flanged drive-head washer is formed having a nut-like body and a plurality of wrench-engaging sides to match the sides of the particular nut or head of a bolt. The upper face of the washer comprises a plurality of cam members arranged to lockingly engage the corresponding cam surface formed on the contacting surface of the cam nut or cam head. The lower surface of the washer is formed having a frictional surface defined by an enlarged annular flange. The matching cam surfaces are arranged to align the corresponding wrench-engaging side walls, whereby the cam nut or cam head can be simultaneously rotated during removal of the fastener without affecting the integrity of the fastener.

Abstract: For achieving improved securing effect in use with oil or wax coated contact surfaces, a self-locking resilient or non-resilient element, such as a spring-ring or a washer, has wall-like protrusions extending on each major surface from the inner to the outer boundary, and recesses lying therebetween, the protrusions each having a plateau-like upper surface which, viewed in cross-section along the peripheral direction of the element, is curved concavely in order to form edges lying in the region of the plateau boundaries, the edges being formed as scraping edges. The wall-like protrusions extend radially in a zig-zag manner from the inner boundary to the outer boundary of each major surface, and each of the recesses lying between the protrusions forms a zig-zag-shaped continuous channel, open in the region of the inner and outer boundaries in order to achieve a drainage effect.

Abstract: A fixing member in the form of a clamping disc having a radial opening, and being adapted to be clamped onto a shaft with the aid of a counter member having a coaxial opening is disclosed. Fastening means connect the disc and the counter member to one another so as to embrace the shaft when the shaft is passed through the openings. The clamping disc has a truncated and normally generally conical portion converging in a direction towards the opening, an outer rim, and an inner accordian-like annular portion integral with the outer portion. The inner portion has an inner rim and radially outwardly extending folds defining substantially flat portions between adjoining folds. The inner rim has a wave-shaped contour as viewed radially outwards. The disc is adapted to support the counter member near the outer rim thereof in an axial direction.

Abstract: A support assembly for a drive vehicle has an outer race for mounting to a suspension for the wheel and an inner race with a removable end section which carries an annular track for roller bodies supported in position therein by a spacer cage, the removable section being mounted on a journal to which it is nonrotatably and immovably fixed by a locking ring assembly which engages simultaneously end surfaces of both the journal and the inner race end section.

Abstract: A plastic load-distributive washer for use with compressible materials. An axial projection has a laterally extending external flange and an internal throughbore. A portion of the throughbore has a lateral dimension exceeding the maximum lateral dimension of a fastener head with which it is used and an axial length which is at least several times the height of the fastener head. The washer is free to float with the compressible material subject to loading while the fastener remains unmoved. The washer may also be provided with a flexible snap ring to limit the amount of relative movement and a plurality of one-way fingers which cooperate with projections on the head to restrict relative rotational movement between the washer and fastener in the removal direction.

Abstract: A reversible lock washer having oppositely disposed cam surfaces adapted for use in combination with a threaded fastener of the type wherein a screw head or nut includes at least one cam surface arranged to engage at least one cam-engaging surface of the reversible lock washer, the cam surfaces of the washer being formed on the inner recessed ring of the washer body. The washer body includes an outer raised peripheral ring having a frictional surface formed on the opposite sides thereof, whereby the washer body is provided with a pair of identical cam and frictional surfaces, thus allowing the washer to be positioned randomly between the engageable cam surface of the nut or screw head and the respective workpiece which is engaged by the frictional surface of the outer peripheral ring, and wherein one arrangement of the nut includes two oppositely disposed reversible cam surfaces, whereby it too can be randomly positioned over the reversible lock washer.

Abstract: A plastic plate is provided for use with a fastener to secure insulation to a metal roof deck. The plate has a planar portion having a centrally disposed tapered hub portion. The central opening and preferably a clear through hole extends in the plate in the area of the hub. The bottom of the plate includes anti-rotational means for engagement with the insulation during driving of the fastener. The anti-rotational means may be associated with the bottom of the planar portion, the hub or both. The fastener may include two separate and spaced apart threaded portions so that as the fastener first engages the metal deck, the unthreaded portion is within the previously tapped hub portion.

Abstract: A roller skate having a wheel support assembly which provides a single device for adjusting the compression within the assembly. The adjustment is accomplished by a cap at the lower end of the assembly which can be rotated to apply the required compression, without the need to loosen any other part of the mechanism. The cap is locked in place after rotation, and is indexed to permit the repeated positioning of the cap.