Abstract: A fastener having a shank receivable in a work bore, and a head receivable in a work counterbore, the shank extending in an axial direction rearwardly from the head, the improvement comprising(a) the head having an annular side wall receivable in said counterbore,(b) the head having a front end wall, and a rear wall that tapers radially outwardly and rearwardly, the rear wall spaced rearwardly from said front wall for engagement with a work surface that also tapers radially outwardly and rearwardly.

Abstract: An improved spider assembly (46) for expanding shoe drum brakes (10) of the type utilizing cantilever mounted anchor pin members (18) is provided. The anchor pin includes a pivot surface portion (62) and a slightly enlarged headed portion (66) extending from the outboard side of the spider member (14). A specially configured washer (80) is slidably received upon the pivot surface portion of the anchor pin and is of a sufficient outer diameter (82) to axially retain the brake shoe webs (26) upon the anchor pin. The washer (80) is provided with a radially extending portion (94) and an axially extending portion (84) extending from the outer periphery of the radially extending portion at a diameter (86) greater than the outer diameter (88) of the anchor pin.

Abstract: The invention disclosed shows a device, method and system for installing threaded masonry anchors. A plate is used to control the rate of axial penetration of the anchor into a masonry structure. An opening in the plate allows engagement of the anchor with the plate. Rotation of the plate is prevented by various means. As the anchor advances and forms threads in the structure, the plate may be used to resist axial forces on the anchor in either axial directions thereby precluding stripping of threads formed in the masonry structure.

Abstract: A cartridge solenoid poppet valve (10) arranged to use a single size pilot valve (31) with any one of a set of a plurality of different size sets of valve seat members (14) and poppet valves (24). Pilot guides (175) are provided having different transverse extents to accommodate such different size valve members. The valve further includes a flatted pilot guide (32) defining flow passages communicated between a transfer chamber (35) and a pilot valve chamber (30) in which the pilot valve (31) is disposed. A T-slot (58) is provided in the solenoid plunger (38) extending fully diametrically thereacross and the pilot valve includes a T-shaped connecting head (71) received therein. The plunger (38) and plug (41) define cooperating stop surfaces (67,70) for maintaining a small spacing between the plunger and plug at all times. Solenoid structure (53) includes a parallelepiped frame (46) defining a space with the solenoid coil (44) received therein.

Abstract: A mounting bolt assembly to permit one man toilet bowl installation is disclosed. The assembly includes a threaded bolt with integral head to engage within the slot of a usual floor flange. The bolt is undercut in spaced relationship from the head to facilitate shortening after installation simply by bending or snapping about the undercut groove without any need for sawing. A resilient flat washer is associated with the bolt in spaced relationship from the head in a position to permit a portion of the resilient washer to be bent or otherwise urged into the floor flange slot. In this manner, the bolt can be supported in an upright orientation from the floor flange without manual intervention to thereby permit the toilet bowl to be applied over the bolt by a single workman.

Abstract: A roof membrane anchoring system is provided comprising upper and lower plates having a water impervious membrane between them. Fasteners secure the lower plate to the roof substrate, and the upper plate is secured against the membrane by a linear fastener penetrating the membrane or by a head and socket engagement without membrane penetration.A plurality of membrane anchoring plates have extending between and secured to them linear elements over the membrane, to limit membrane lift forces.

Abstract: A bearing plate for supporting a portion of a mine roof or similar surface. The bearing plate includes a substantially planar, roof-bearing portion having a roof-bearing surface. Also included is a substantially planar bolt-head bearing surface. The bolt-head bearing surface includes a concentrically located aperture adapted to receive a roof bolt having a bolt head. The bolt-head bearing surface is spaced from the planar roof-bearing portion and is substantially parallel to the roof-bearing surface. A wall extends at an angle from the bolt-head bearing surface about its outer periphery. A reinforcing wall extends radially outward from the distal end of the angled wall and merges with the roof-bearing portion. The reinforcing wall defines a frusto-conical portion, the base of which is conterminous with the roof-bearing portion, and a cylindrical portion, the base of which merges with the distal end of the frusto-conical portion.

Abstract: A daze fastener system for connecting two or more structural elements wherein the structural elements and fastener parts have substantially different coefficient of thermal expansion physical property characteristics is employed in this invention. By providing frusto-conical abutting surfaces between the structural elements and fastener parts any differences in thermal expansion/contraction between the parts is translated to sliding motion and avoids deleterious thermal stresses in the connection. An essential feature for isotropic homogeneous material connections is that at least two sets of mating surfaces are required wherein each set of mating surfaces have line element extensions that pass through a common point.

Abstract: An improved bearing plate is used to support a portion of a mine roof. The bearing plate is stamped from sheet metal and has elongated ribs which define grooves facing toward a back side of the bearing plate. Reinforcing members are disposed in the grooves and are fixedly connected to the bearing plate. The reinforcing members increase the resistance of the bearing plate to deflection under the influence of loads applied to the bearing plate by the mine roof.

Abstract: A load-bearing support plate for use in coal mines or other such excavations to be held in supporting engagement with the roof or walls of the excavation by an elongated bolt or rod anchored in a blind drill hole. The plate is preferably rectangular in outer periphery with a central opening for passage of the bolt or rod. It is formed from an initially flat piece of sheet steel, embossed in certain areas by a die to push portions of the metal away from the side of the plate which contacts the load-bearing qualities of the plate. The pattern includes a plurality of elongated, parallel identations in the rock-engaging surface of the plate, with the portion surrounding the central opening remaining in the plane of the original metal. Preferably, at least one on each side of the central opening; various modifications of the embossed pattern are disclosed within the general scope of the invention.

Abstract: Improved flat annular washer for indicating tension on associated high tensile strength bolt. Washer bears against either bolt head or nut of given radius. Washer includes means for indicating stress on washer which visibly moves when stress on washer, which is related to tensile stress on bolt, reaches a preselected level.

Abstract: A fixing means for attachment to a base (1), e.g. to a level concrete roof, of a thermal lagging (3), e.g. a mineral wool mat, said fixing means consisting of a screw (2) or other nail binding to the base and a washer (4) located on top of the lagging, this washer carrying a tubular recess (5) partly penetrating into the lagging (3) and the bottom (6) of which is pierced by the screw and within which the head of the screw (2) resides. To the end of the tubular recess (5) has been connected by stays (7) a plug (8) fitting into a hole drilled in the base (1) and into which the screw (2) can be screwed.

Abstract: The mine roof plate comprises a rigid, sheet steel element of substantially uniform thickness having a domed section which reinforces the plate against distortion. The domed section is at least partially of generally quadrilateral configuration, having a substantially square base and defines an elevated section having an aperture therein circumscribed by a generally planar land surface. The periphery of the plate is of planar, rectangular configuration and disposed in spaced parallel relationship to the elevated section. The configuration of the domed section, in having right-angular corner portions, defines thereby reinforcing ribs, along the domed section, which terminate at the planar periphery of the plate.

Abstract: An improved fastener assembly is designed for securing a workpiece, having known thickness and a hole therethrough and being subject to plastic deformation, to a support. The fastener assembly can apply a high clamping load to the workpiece yet causes minimal cold plastic deformation of it and includes a fastener having a head and a shank projecting from the head. The shank includes an upper portion adjacent the head, an annular rib that protrudes radially outwardly from the upper portion at its extreme opposite the head, and an operative portion engageable in the support. A washer having a hole therein is received about the upper portion of the shank and is formed on one of its faces with an annular rabbet encircling the hole. A sleeve includes a generally cylindrical side wall having an axially extending split discontinuity and circular edges at its opposing axial extremes.

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 specially designed washer for attaching a plastic member to a metal substrate. The washer has a generally polygonal configuration with a metal-substrate-engaging member which projects through the plastic from an off-center location. This member provides some dissipation of the clamp load through a metal-to-metal contact path through the plastic and also acts as a pivot point for the washer to transfer another component outwardly from the aperture in the plastic and distribute it over a wide surface area to reduce plastic creep and eliminate loosening of the joint. A crowning of the washer body dissipates additional clamp loading from the resulting spring forces.

Abstract: A bearing plate for supporting a portion of a mine roof or similar surface. The bearing plate includes a substantially planar, roof-bearing portion having a roof-bearing surface. Also included is a substantially planar bolt-head bearing surface. The bolt-head bearing surface includes a concentrically located aperature adapted to receive a roof bolt having a bolt head. The bolt-head bearing surface is spaced from the planar roof-bearing portion and is substantially parallel to the roof-bearing surface. A vertical wall extends from the bolt-head bearing surface about its outer periphery. A reinforcing wall extends radially outward from the distal end of the vertical wall and merges with the roof-bearing portion. The reinforcing wall defines a first frusto-conical portion, the base of which is conterminous with the roof-bearing portion, and a second frusto-conical portion, the base of which merges with the distal end of the first frusto-conical portion.

Abstract: Fastener assemblies for mounting a workpiece such as a hub centered wheel rim include a threaded fastener and a clamp washer. The fastener includes a body having a thread structure and a structure engageable by a tool for tightening of a threaded joint to urge the fastener assembly against the workpiece. The clamp washer includes a central aperture surrounding the thread structure and interposed between the fastener body and the workpiece. A pair of cooperating bearing surfaces are formed on the inner end of the workpiece and the outer side of the clamp washer, and a clamp surface is defined on the inner side of the clamp washer. When the fastener assembly is tightened against the workpiece, the bearing surfaces comprise continuous annular spherical zones having common centers and radii of curvature to the end that the bearing surfaces are in intimate wide area face-to-face contact and the clamp surface is in flat area contact with the workpiece regardless of the squareness condition of the threaded joint.

Abstract: A system and method for fixedly securing a roller side bearing assembly to the top surface portion of a rail car truck assembly. Elongated threaded fasteners pass through registered openings in a bearing cage bottom wall and truck assembly top surface portion in threaded receipt by locknuts disposed on the underside of the top surface portion. A washer captured on each fastener includes at least a portion thereof which is closely interposed between the fastener head and the bearing cage bottom wall at the associated opening. The fasteners are rotated into threaded advancement with the locknuts to achieve fastener clamploads which fall within predetermined upper and lower limits. Each fastener head advantageously includes a hex type wrench receiving opening which has a limited maximum torque capacity generally correlated to obtaining a fastener clampload no greater than the predetermined upper limit. The washer geometry facilitates use of better or improved fastener head fillets.

Abstract: Improved flat annular washer for indicating tension on associated high tensile strength bolt. Washer bears against either bolt head or nut of given radius. Washer includes means for indicating stress on washer which visibly moves when stress on washer, which is related to tensile stress on bolt, reaches a preselected level.

Abstract: A hookbolt adapter for use with a bolt in order to convert the latter into a hookbolt, the adapter comprising a hole through which the shank of the bolt can be taken, a nose portion and a tail portion diametrically opposed to each other with respect to the hole, and a support surface to be engaged by the head or by the nut of the bolt. The hole is of circular cross-section and the axis of the hole is slightly inclined to a line perpendicular to the support surface, and two diametrically opposed substantially semicircular contact portions of the wall of the hole serve to retain the bolt rigid with the adapter when the axis of the bolt adopts a position substantially perpendicular to the support surface.

Abstract: The following specification discloses the use of a nickel titanium alloy component referred to as Nitinol for purposes of providing a pre-stressed structure. The alloy component provides stiffness to shell structures and tubular members such as oil well pipes, and conduits, as well as pre-stressed loadings for head bolts on engines or other pre-stressed fasteners. Pre-stressing is accomplished by deforming the Nitinol component below its transformation temperature which can be a cryogenic temperature, after which the Nitinol component returns by its memory to a desired shape for pre-stressing. The foregoing develops a large pre-load on a structural joint, so that successful design applications of Nitinol can pre-load joints with minimum load path offset for a shell or other structure. This minimizes in-plane local moments, as well as eccentric loading, and provides joints of lower weight and less internal volume protrusion.

Abstract: An adapter which converts a bolt into a hookbolt has a nose portion and a tail portion diametrically opposed with respect to the stem of the bolt. The nose portion has an engagement surface which curves upwardly away from a flange to which the bolt is to be hooked, and parallel ribs are provided on the engagement surface which extend outwardly away from the stem of the bolt. The ribs are deformable so as to compensate for irregularities in the surface of the flange.

Abstract: A device for capturing a screw or nut loosely in a recess in a plastic part. The recess has inward ridges extending longitudinally from a ring-positioning rim. A retaining ring, having indentations corresponding to the ridges, is rotated to cut through and be held securely by the ridges.