Abstract: The present disclosure provides a screw and a screw assemblage. The screw includes a screw head and a screw shaft which protrudes from an underside of the screw head and has a self-forming or self-cutting thread, wherein the underside of the screw head has a bearing area and at least one annular recess extending around the shaft between the bearing area and the shaft, wherein a coating made of an elastic sealant is attached to the underside of the screw head.

Abstract: This invention builds up on technical features and on the industry experience with the use of Merlin™ family connectors. In addition to friction, structural means utilized to transfer high torsional loads include dog-clutch teeth and may also include: interlocked thread systems, shear pins, keys and splines, all used in isolation or in arbitrary combinations. Static and fatigue bending load capacities of the connectors remain high, while the axial load capacities may or may not be high, depending on the design requirements. Connectors according to this invention can be built as new, carefully optimized designs. In some cases upgrading existing Merlin™ family connector designs to increase their torque transfer capacities may be also feasible.

Abstract: A semi-trailer leg loading nut includes a screwed hole provided on a nut column and connecting two ends of the nut. Said nut is a two-layered structure formed of a top layer and an under layer or a three-layered structure formed of a top layer, an intermediate layer and an under layer. The outer outline of at least two layers of the nut is a square with the same cutting angle. The side length of the two layers of squares is equal. The outer outline projection of the two layers of squares overlap with each other along the column axis direction. The outer outline projection of the other layer is within the overlapped projection of the two layers along the column axis direction. A funneled oil cup or an oil groove is provided on the top layer of the nut and communicates with the screwed hole. A bottom of the under layer of the nut is plane and is pressed on a loading plate in a quadrate pipe to transfer load.

Abstract: A conductive sleeved fastener assembly includes an electrically-conductive fastener having a fastener head and a fastener shank extending from the fastener head and an electrically-conductive fastener sleeve receiving the fastener shank of the fastener and a fastener sleeve flange provided on the fastener sleeve and disposed in direct contact with the fastener head of the fastener. A method of preparing a conductive sleeved fastener for use is also disclosed.

Abstract: A protective covering for protecting an exposed portion of a threaded fastener comprises a body cavity, sized and shaped to be positioned over the exposed portion of the threaded fastener. The body cavity includes at least two ends and a quantity of a protectant material is disposed within the body cavity. A rupturable membrane is disposed over at least one end of the body cavity. The rupturable membrane operable to: retain the protectant material within the body cavity during storage and transport of the protective covering, and be ruptured during positioning of the body cavity over the exposed portion of the threaded fastener.

Abstract: A structural bolt security apparatus includes a security nut forming a threaded central hole for a bolt; the security nut has a groove in an upper surface and/or a side surface. At least one groove is at least partially separated from the threaded central hole by the upper surface. In one embodiment, a security nut has a plurality of electrical contacts, logic electronics configured for monitoring electrical resistance across the electrical contacts, and a transmitter for broadcasting security data generated by the logic electronics. In one embodiment, a structural bolt security apparatus includes a security nut and an outer sleeve. Structural bolt security systems described herein include a security nut, a security socket, and a security wrench. The systems may be equipped with RFID chips for recognition of matched security nuts and security sockets, and/or with GPS transceivers for broadcasting security wrench position information.

Abstract: The present invention provides a screw comprising a head and a threaded shank, wherein the shank is covered with a coating at least 60% of the length thereof from the end, the coating includes microcapsules that contain a viscous fluid with an appropriate level of viscosity. Shavings, including powdered shavings due to friction and exfoliations that may be generated during the screwing process, will be held, so that they will not fall, at the surface of the shank by the viscous fluid coming out of the microcapsules.

Abstract: An integrated seal assembly and a connector incorporating the seal assembly for connecting a coaxial cable to an externally threaded port. The seal assembly includes a bellows-type seal having an elastically deformable tubular body and a plurality of sealing surfaces, and an integral joint-section intermediate an anterior end and a posterior end that assists in the axial deformation of the seal in response to axially-directed force. One of the sealing surfaces is made to engage a corresponding surface of an internally threaded nut. The nut and attached seal form an integral seal assembly. A coaxial cable connector includes a connector body. One end of the body attaches a coaxial cable, the seal assembly being rotatably attached to the other end. The connector is engagable with an externally threaded port via the internally threaded nut component of the connector.

Abstract: A bolt greaser unit for lubricating the exposed top ends of anchor bolts that secure the base tower of wind generators to the foundation that is formed in the ground. The bolt greaser unit has a vertically oriented tubular housing having a base member secured to its bottom end and a circular cap member detachably secured to its top end. The interior chamber of the tubular housing has a plurality of vertically oriented rod members having their bottom ends screwed into the top surface of the base member. Each rod member has a brush member telescopically received thereon. The top end of the rod members pass through apertures in the circular cap member and are secured in position by nuts. A universal joint structure is fixedly secured to the top surface of the cap member and it has a four sided shank portion extending upwardly that is telescopically received in the bore hole of a socket mounted on the drive shaft of a cordless power tool that would be used to rotate the bolt greaser unit.

Abstract: A tensioning nut to secure a disk-shaped tool is threadable onto the threaded spindle of an electric tool, particularly an electric hand tool with run-out brake such as a right-angle grinder. The nut includes a nut body provided with a corresponding thread, with a coaxially-positioned pressure ring that may be tensioned with the disk-shaped tool. An axial bearing is positioned between the ring and the nut body. The nut further includes a disk member within the nut body for preventing rotation of the pressure ring. At least one engagement device is positioned between the disk member and the surrounding wall of the nut body. This blocking mechanism forms a uni-directional coupling, whereby a disengagement exists between the nut body in its tensioning direction and the disk member, and locking occurs between both of them in the opposing direction of the nut body relative to the disk member. Thus, loosening of the tensioning nut is prevented particularly during run-out of the rotating, disk-shaped tool.

Abstract: A friction reducing device comprises a stretchable thin film of elastomeric material impregnated or dusted with lubricating material. The thin film adheres to an annular member through which a fastener element having external threads can pass.

Abstract: A friction reducing device comprises a stretchable thin film of elastomeric material impregnated or dusted with lubricating material. The thin film adheres to an annular member through which a fastener element having external threads can pass.

Abstract: A pierce nut having an inner cylindrical portion (2) provided centrally on an underside of a main nut body (1) and formed at an inner surface thereof with a female thread (3), an outer cylindrical portion (4) provided on a peripheral edge of an underside of the main nut body, and a recess (5) defined by an outer surface of the inner cylindrical portion and an inner surface of the outer cylindrical portion, characterized in that at least one passage (6) is provided to communicate between the recess and an outer surface of the pierce nut to enable flowing of a fluid.

Abstract: A device for protecting threaded shafts and nuts against corrosion. The device covers and protects a nut and the exposed portion of a threaded shaft from corrosion found in harsh environments by holding grease in place over the nut and shaft.

Abstract: A fastener assembly includes (a) a fastening member that includes an out-of-round portion centered about a longitudinal axis and configured for engagement with a torque-transmitting tool, a frustoconical load-bearing surface that extends radially outwardly from the longitudinal axis, and a threaded portion that is centered about the longitudinal axis; (b) a metallic, frustoconical thrust washer having a concave surface positioned adjacent to the load-bearing surface of the fastening member, and a convex surface; and (c) a pressure ring that includes a flange, a frustoconical load-bearing surface formed by the flange and positioned adjacent to the convex surface of the thrust washer, and a frustoconical undersurface oriented to contact a complementary depression in a workpiece.

Abstract: The present invention entails an enclosure that encompasses and protects a lug and lug nut extending from a wheel hub. Structurally, the enclosure comprises an end wall, a surrounding side, a snap on end cap, and a lug opening or port formed in the end wall. When installed, the lug extends through the lug opening and supports the enclosure while the end wall lies exteriorly of the lug nut and the surrounding side is spaced from the lug nut but generally encompasses and surrounds the lug nut and the lug. Prior to enclosing the enclosure by snapping on the end cap, the enclosure is filled at least partially with a grease or lubricant.

Abstract: A clamping screw for holding a tool to a threaded shaft is provided with a body member having a threaded surface for engagement with the threaded shaft. A flange ring is disposed about the body member and clampingly engages the tool when the body is threaded onto the shaft in engagement with the tool. An operating ring is rotatably disposed about the body member and retained from movement axially away from the flange ring. A torque increasing mechanism is operatively disposed about the body member between the operating ring and the flange ring and is configured to transmit torque from the operating ring to the body member.

Abstract: A lubricated wing nut device for attaching a cover plate to a container such as on a gravity tee of the type used for closing a discharge hopper of a tank transport vehicle. The lubricated wing nut inhibits corrosion and seizing of the bolt used in securing the cover plate to the container opening. It comprises a cast metal body having a longitudinal bore of a predetermined diameter inwardly from a base end thereof. Fitted into the bore is a stainless steel nut having an internally threaded surface for engaging the threads on a bolt. The longitudinal bore is adapted to be filled with a lubricating grease.

Abstract: The present invention is directed to a protective device for a nut and bolt assembly which assembly is used to secure two or more parts together. The invention a tubular shaft member to protect the bolt and a tubular shaft or hemispherical body to cover the nut or to cover the tubular shaft and nut together. The tubular shaft is either an independent unit or is integrally connected to the hemispherical body. In more embodiments a connecter unit is used. Grease or other protective agent is introduced into assembly to prevent rust and deterioration.

Abstract: A threaded fastener for securing workpieces with a determinable desired clamp load and including a nut assembly and a bolt with the nut assembly including a nut member with a lock base having a load ring portion and a boss portion with the boss portion adapted to be located in a retention counterbore in the nut member and being of a length to provide a gap between the load ring portion and nut and at a predetermined load to collapse and close the gap and be deformed radially into compressive engagement with the threads of the bolt to provide prevailing torque type lock structure resisting loosening of the nut assembly from the bolt with the predetermined collapse load providing the desired clamp load and with the gap closure visibly indicating attainment of the desired clamp load.

Abstract: A feed screw including a screw shaft, a nut meshed with the screw shaft and a plurality of rolling members inserted between the screw shaft and the nut, wherein a solid film of a fluorine-containing polyurethane polymer is formed on any portions in rolling/sliding contact. The molecules of this solid film have urethane bonds, and form a three-dimensional reticular structure. Therefore, the film is unlikely to separate, peel off or wear. Accordingly, the feed screw produces less dust, improves lubricating property and thus elongates its life.

Abstract: A fastener for securing an object to a threaded spindle comprises a nut portion and a flange portion rotatably connected so as to rotate independently. The fastener includes a bore therethrough having threaded and unthreaded regions, the threaded region for securing the fastener to the spindle.

Abstract: A chemical anchor bolt and cap assembly installable in a hole drilled in masonry for fastening an object thereto The threaded shank of the bolt and the hollow cap extending from its end are inserted into the hole, causing an uncured bonding agent deposited in the hole, such as an epoxy, to surround the cap and the shank. When the epoxy hardens the cap is then embedded in the epoxy to create a void below the end of the shank. Cast in the epoxy surrounding the shank is a female thread that complements the shank thread. To permit the bolt to turn and cause the end of the shank to advance into the void and thereby tighten the fastening, the threaded shank has coated thereon a releasable barrier layer that acts to masks surface irregularities in the shank thread and to slightly space the shank thread from the female thread. As a consequence, the female thread cast in the epoxy is functionally free of irregularities and is loosely intermeshed with the shank thread whereby the bolt can then be easily turned.

Abstract: A clamp screw for clamping a rotating member including a threaded member, a flange member axially movable with respect to the threaded member, and an operating ring for actuating the clamping screw. The clamp screw includes a ball screw transmission mechanism between the operating ring and the threaded member, the ball screw transmission mechanism being configured to transfer rotational movement of the operating ring to axial movement of the flange member for actuating the clamp screw.

Abstract: A fastener member in the nature of a nut or bolt which bears against an external member which is softer than the fastener member including a body portion having first and second ends, a spin washer mounted on the first end of the body portion, internal and external surfaces on the spin washer, a first surface on the external surface for bearing the external member with a first frictional force, and a second surface on the internal surface of the spin washer for bearing against the first end of the fastener member with a second frictional force which is less than the first frictional force to thereby permit relative rotation between the first end of the fastener member and the internal surface of the spin washer while the spin washer remains in nonrotatable engagement with the external member.

Abstract: A spindle having a threaded end and a lubricated area spaced from the threaded end, the spindle having a first lubricant passageway extending from the spindle end and terminating adjacent the lubricated area and a second lubricant passageway communicating with the first lubricating passageway and the lubricated area. The spindle further having a key opening adjacent the outer end, the key opening extending through the spindle longitudinal axis and the first lubricant passageway being spaced from the axis so that grease may be inserted through the first lubricant passageway without entering the key opening. In an alternate embodiment, the passageway and key openings intersect but the lubricant passageway is larger in diameter than the diameter of the key opening so that when a key is placed in the key opening, lubricant can flow on either side of the key as it flows through the first lubricating passageway, the key being dimensioned so that substantially no lubricant flows through the key opening.

Abstract: A locking fastener (10) comprises a nut (12) having a threaded portion (14) formed about a central axis (16) of the fastener. A head portion (18) of the nut is formed integral to the threaded portion (14), for gripping the fastener during tightening or loosening. An inner member (22) is provided coaxial with the head portion (18) and is designed to be mechanically coupled to an underside of the head portion (18) so as to be substantially immobile relative to the head portion. Inner member (22) is provided with inclined cam means (24) in the form of a plurality of cam surfaces arranged in an annular configuration about the inner member (22). A locking member (26) is provided coaxial with the threaded portion (14) and has a matching cam means (28) on one face adapted to rotatably interengage in facing relation with the inclined cam means (24) on inner member (22).

Abstract: A fastening or connecting device for fiber-reinforced ceramics to be used in high temperature ranges is in the form of a screw that is manufactured of a ceramic material in the shape of a plate having fiber layers with fibers oriented parallel to the surface of the plate. The plate thickness is less than 90% of the core diameter of the thread so that upon cutting a thread a discontinuous thread results. The bore of a complementary nut is provided with a continuous inner thread that cuts through the fiber layers at a right angle.

Abstract: A fastener bearing assembly for reducing the turning friction between a head of a fastener and an object to be fastened, for example, a vehicle wheel. The assembly comprises a first part having a first pressure transmitting surface and a second part having a second pressure transmitting surface, and adapted to rotatably receive the first pressure transmitting surface in facing relation thereto. A solid dry lubricant material in the form of an annulus is provided to reduce friction between the first and second pressure transmitting surfaces. In use, the first part rotates with the head of the fastener and the second part remains stationary relative to the surface of the fastened object so that the dry lubricant annulus acts as a bearing between the head of the fastener and the fastened object. A locking member adapted to engage a surface of both the first and second parts may be provided to prevent rotation of the first and second parts relative to one another.

Abstract: The thread protecting device of the present invention includes a U-shaped clip with a hollow cylindrical cap mounted thereon. The clip includes spaced apart upper and lower legs defining a channel therebetween for receipt of a portion of a vehicle frame. The cap includes a threaded plug in the lower end thereof and a closed upper end. A carrier bolt for a spare tire carrier is adapted to extend through a hole in the legs of the clip, an aperture in the frame, and the threaded lower end of the cap such that the threads are enclosed within the cap. A grease fitting is provided on the cap so that grease can be injected into the cap for lubricating the threads.

Abstract: A roof control system for underground strata has an elongated bolt adapted for insertion into a hole bored into the underground strata. The bolt is securely anchored in the hole at a location where a significant length of the bolt remains between the opening of the borehole and the anchor. A significant length of the bolt is placed in tension by rotating the bolt at a predetermined torque, with a plate mounted on the bolt and located adjacent to the outer surface of the strata and a nut on the end of the bolt for engaging the plate. The friction between adjacent surfaces which rub against each other when the bolt is rotated is selectively adjusted so that the tension/torque ratio of the bolt is selected to match the desired level for a particular type of strata. A array of friction reducing washers with different contact surface areas are provided so that one can be selected for location between the nut and plate.

Abstract: This invention relates to threaded fasteners, an apparatus for making such threaded fasteners and methods of fastening parts. The tip of the shank of a threaded fastener has at least one thread coated with a lubricating or masking material to reduce the drive torque necessary for fastening as well as provide a protective coating for the fastener during subsequent processing operations. The drill tip of the disclosed self-drilling fasteners is coated with a lubricating material to reduce drive torque and to eliminate binding when drilling through fibrous material. The present invention also prevents the build-up of corrosion inhibiting materials on threaded fasteners attached to parts to be fastened together. A masking and/or insulating material is first applied to the threaded fasteners attached to the parts to substantially prevent applied corrosion inhibitor from adhering to the threads of the fastener.

Abstract: A protective cap for wheel nuts of a truck or other vehicle comprises a hollow thimble of rubber or like material having a pad containing at the closed end of the thimble.

Abstract: A flanged nut is received by a cup washer which is slightly larger than the flanged nut to allow rotation of the nut relative to the washer. The cup washer is deformed (staked) to capture the nut about its flanged periphery. The nut is designed to rotate relative to the washer during assembly to assure two known, constant bearing surfaces regardless of the nature of the panel surface beneath the washer. The flanged nut has a large nut-to-washer bearing area capable of optimizing stress distribution at high loads.

Abstract: The anchor bolt assembly is of the tensionable type used in mine roofs and the like in which the anchor bolt assembly is positioned in a bore hole of a rock formation. The bolt assembly includes an elongated bolt shaft with a head at one end and is threaded on the other end and has a mechanical expansion anchor on the threaded end. A bearing having a central opening is positioned on the bolt to engage a face of the rock formation. A two faced graphite coated washer is positioned on the bolt between the bolt head and the bearing plate. During installation, the washer acts as an anti-friction bearing between the bolt head and the plate to improve the torque to tension relationship.

Abstract: The invention relates to a nut with a pressure ring in which the pressure ng is provided with a spherically shaped underside for engagement with a depression complementary thereto in a component to be secured. In order to permit a simple and secure mounting of the nut with the pressure ring and to guarantee a clearly reproducible holddown force, the pressure ring (12) is formed as a closed ring and means (18, 19), such as for example a peripheral rim and a circumferential flange, are provided for connecting the nut (10) with the pressure ring (12) which prevents a separation and loss. Thereby the nut and ring are rotatable relative to one another about a nut axis (1) and are shiftable relative to one another transversely of the nut axis (1). The peripheral rim (18) for connecting the nut (10) and the pressure ring (12) is so arranged on the first of these two elements that it engages in overlapping relationship the circumferential flange (19) on the second element (12) with radial and axial freeplay.

Abstract: A rod-shaped tension member formed of fiber reinforced composite material is utilized as an anchoring rod in foundation and mining construction, or as a reinforcing member in concrete and prestressed concrete construction. At least, in an axially extending region where it is to receive an anchoring member, such as a rod, the tension member has a continuous helical thread formed of alternating ribs and recesses. The anchoring member has a corresponding thread so that it can be screwed onto the tension member thread. An intermediate layer is provided between the threaded regions of the tension member and the anchoring nut, and is formed of a material affording large plastic deformation relative to the tension member when slight stress increases occur at overload conditions.

Abstract: A drive-in expansion fastener is provided having a generally cylindrical, hollow body with a tapered end formed from an angular truncation of the body. The body is reinforced by at least one longitudinal rib so as to permit drive-in penetration from the tapered end even if the fastener is formed from plastic materials. The fastener is retained within the wall by at least one pair of hinged flanges which expand circumferentially in response to the threaded insertion of an ordinary screw within the hollow portion of the body. That screw engages an inclined surface within the body to cam the flanges outwardly. The flanges engage the back surface of the wall while a longitudinally slit portion of the body expands within the hole created by drive-in penetration.

Abstract: A quick release assembly including a pair of flanges for receiving a rupture disc insert type holder and the like therebetween in a leak-tight seal, at least one of the flanges being secured to a pressure relief conduit of a pressure system. A minimum number of bolts, preferably a maximum of three Jack-type bolts, secure the two flanges together to provide a quick access to the rupture disc insert type holder disposed between the flanges for replacement or inspection of the rupture disc contained within the insert type holder, where the Jack-type bolts spread the two flanges apart. Stop pins are provided on at least one of the flanges to position the insert type holder between the two flanges. Preferably, one of the flanges is slotted, and the other flange has threaded openings therethrough to receive the Jack-type bolts to provide for a quick release spreading of the flanges apart, each Jack-type bolt being provided with a positioning collar thereon.

Abstract: A fastener, and a process and apparatus for coating fasteners, in which a resin type material is applied to the fastener is disclosed. A stream of resin type material is directed to each fastener and the threads of each of the fasteners, the threads may be covered over an arcuate variable length including complete 360.degree. coverage. The resin type material applied may be a masking material, a lubricating material and/or an insulating material enabling an accurate and consistent torque-tension characteristic to be maintained during coupling of the fastener in a variety of post-processing environments. Furthermore, the resin type material applied to the fastener is substantially resistant to the deposition of corrosion resistant or preventative materials.

Abstract: A self lubricating nut having a central cavity for insertion of a bolt, a lubricant passage through said nut which opens into an internal bored circumferential gland, and at least one internal bored axial gland which crosses said circumferential gland.

Abstract: A locking wedge apparatus for fastening a printed circuit board within an elongated slot in a rack. The apparatus includes an elongated center wedge having sloped surfaces at its opposite ends and two end wedges abutting against the center wedge's opposite sloped surfaces. A screw interconnects the two end wedges, threadedly engaging a threaded bore in the remote end wedge. A friction nut is positioned on a portion of the screw's remote end that projects beyond the remote end wedge, and the apparatus is configured to include a pair of low-friction, abutting surfaces between the nut and the remote end wedge. This ensures that when the screw is fully loosened, the frictional torque applied to the nut by the end wedge is exceeded by the frictional torque applied to the nut by the screw. Further unthreading of the screw is thereby effectively inhibited.

Abstract: A fastener, and a process and apparatus for coating fasteners, in which a resin type material is applied to the fastener is disclosed. A stream of resin type material is directed to each fastener and the threads of each of the fasteners, the threads may be covered over an arcuate variable length including complete 360.degree. coverage. The resin type material applied may be a masking material, a lubricating material and/or an insulating material enabling an accurate and consistent torque-tension characteristic to be maintained during coupling of the fastener in a variety of post-processing environments. Furthermore, the resin type material applied to the fastener is substantially resistant to the deposition of corrosion resistant or preventative materials.

Abstract: A roof control system for underground strata has an elongated bolt adapted for insertion into a hole bored into the underground strata. The bolt is securely anchored in the hole at a location where a significant length of the bolt remains between the opening of the borehole and the anchor. A significant length of the bolt is placed in tension by rotating the bolt at a predetermined torque, with a plate mounted on the bolt and located adjacent to the outer surface of the strata and a nut on the end of the bolt for engaging the plate. The friction between adjacent surfaces which rub against each other when the bolt is rotated is selectively adjusted so that the tension/torque ratio of the bolt is selected to match the desired level for a particular type of strata. A array of friction reducing washers with different contact surface areas are provided so that one can be selected for location between the nut and plate.

Abstract: A drive-in expansion fastener is provided having a generally cylindrical, hollow body with a tapered end formed from an angular truncation of the body. The body is reinforced by at least one longitudinal rib so as to permit drive-in penetration from the tapered end even if the fastener is formed from plastic materials. The fastener is retained within the wall by at least one pair of hinged flanges which expand .Iadd.or move .Iaddend.circumferentially .Iadd.apart .Iaddend.in response to the threaded insertion of an ordinary screw within the hollow portion of the body. That screw engages an inclined surface within the body to cam the flanges outwardly. The flanges engage the back surface of the wall while a longitudinally .[.slit portion.]. .Iadd.split length .Iaddend.of the body expands within the hole created by drive-in penetration.