Abstract: A drill pipe assembly includes a first drill pipe, a second drill pipe, and a tubular pipe link residing between and fluidically coupled to the first drill pipe and the second drill pipe. The tubular pipe link includes a first end and a second end opposite the first end. The first end is threadedly coupled to a threaded end of the first drill pipe to form a threaded connection. The second end is attached to the second drill pipe. The first end of the pipe link has less threads than the threaded end of the first drill pipe. At least some of the threads of the first end of the pipe link are collapsible to disconnect the first drill pipe from the second drill pipe responsive to torque to tighten the first drill pipe to the pipe link.

Abstract: A retaining pin having anti-rotation features is provided. The retaining pin may comprise a pin shaft coupled to a retaining flange. The pin shaft may be inserted into a structural member proximate a shaft and a nut. The retaining flange may comprise an anti-rotation void defined by a first arm and a second arm and configured to engage the shaft. In response to the nut coupling the retaining flange to the shaft, the retaining pin may at least partially reduce movement and rotation of the shaft relative to the retaining pin.

Abstract: A trailer hitch system for equalizing trailer loads and reducing trailer sway. The trailer hitch system may include spring bars that may be attached to a hitch head using a trunnion style connection. The spring bars may be attached to the trailer using rigid brackets that reduce swinging of the spring bars. The rigid brackets having a plurality of contact points may include an upward extending portion for attaching to the trailer tongue, and a lateral extending portion for receiving the spring bars thereupon.

Abstract: A foam roofing underlayment is provided with a reinforcement membrane having an array of fastener elements for engaging fastener elements on a flexible roof membrane. The underlayment is formed by molding foam between the reinforcement membrane and a carrier membrane. The underlayment in secured to the roof using washers having fastener elements for engaging the fastener elements of the flexible roof membrane. An anti-peel flap with fastener elements is provided around the periphery of the washers. A slip sheet is used between the underlayment and the flexible roof membrane to permit accurate positioning of the flexible roof membrane prior to engagement of the fastener elements. The interstices between the fastener elements provide lateral moisture paths to vents in the flexible roof membrane.

Abstract: Disclosed is a locking spring screw formed from a cylindrical screw body having a screw head that includes a tool slot adapted for receipt of a flexible spring member. The tool slot includes at least one outlet formed adjacent to the tool slot which is adapted for passage therethrough of a tongue extending outwardly from the spring member. A ridge is located opposite the outlet from the cylindrical screw body and formed at least partially around the circumference of the screw head wherein the spring member is retracted during installation and, upon the ridge engaging a flange, the spring member is released preventing screw head removal by entrapping the flange between the ridge and the tongue of the spring member.

Abstract: The present invention relates to a fastening arrangement for fastening a component A to a component B with automatic tolerance compensation between the components A and B. The fastening arrangement comprises a fixable base element into which a mounting screw can be screwed via a first thread pair, and an adjusting element with an external thread that can be screwed into the base element via a second thread pair, wherein a first and a second anti-rotation safeguard are provided between the base element and the adjusting element, wherein said anti-rotation safeguards can be used to prevent detachment of the adjusting element from the base element during transport as well as locking of the adjusting element with the base element.

Abstract: In various examples, a set screw apparatus includes a set screw including a set screw body. An abutment extends radially outwardly from the set screw body and longitudinally separated from a threaded set screw area of a first length by an unthreaded set screw area of a second length of the set screw body. A block includes a bore. A threaded block area includes a third length, wherein the abutment inhibits movement of the set screw past the threaded block area and removal of the set screw from the bore. The third length is shorter than the second length so that an entirety of the threaded block area can be disposed within the unthreaded set screw area, such that the set screw is freely rotatable within the bore, but retained within the bore, if turned in a first direction with respect to the block.

Abstract: A screw device, for mounting within a housing, configured to fixedly connect a first portion and a second portion of the housing, includes: a driving part fixedly connected within the first portion of the housing; a screw connected with the driving part; a nut fixedly connected within the second portion of the housing and matching the screw; and a chip configured to control the driving part to drive the screw to move relative to the nut, so as to achieve engagement or separation between the screw and the nut.

Abstract: The invention relates to an assembly for a turbine engine, the assembly comprising a tubular shaft (60), a nut (64) screwed onto an end portion of said tubular shaft (60), and a locking member (86) for locking the nut (64) on the shaft (60), said member (86) including means (90, 78) for coupling in rotation with the nut (64) and means (92, 68) for coupling in rotation with the shaft (60), said member (86) being movable between a position for coupling the nut (64) in rotation relative to the shaft (60), and a position for releasing the nut (64) relative to the shaft (60). The nut (64) includes a housing (72) in which said member (86) is suitable for being held when in its release position.

Abstract: An anti-tamper system including: a fixing device and an anti-tamper detection device; the fixing device comprising a body and a head whereby the head having a larger cross section then the body for enabling a tool to engage and drive the body into a first material layer thereby makes a firm connection with the anti-tamper detection device between the head and the first material layer; the fixing device further comprising a lock wherein the head is locked to the body by the lock where there is no external magnetic field and wherein the head becomes disengaged from the body when the lock is unlocked by an external magnetic field; and whereby the anti-tamper detection device detects and records a change the connection when the head becomes disengaged.

Abstract: A cast-in anchor system for anchoring objects to concrete structures. The preferred system uses an extruded cast-in anchor and an extruded bolt retainer. The cast-in anchor is embedded within concrete with a face left exposed. The bolt retainer has a bolt inserted through it and is placed within an anchor channel on the exposed face of the cast-in anchor. The bolt retainer allows for use of an industry-standard bolt and prevents the bolt from rotating once the bolt-head is seated against it. The cast-in anchor and the bolt are positioned along the length of the anchor channel, with a threaded portion of the bolt extending out of the anchor channel. A workpiece is placed over the threaded portion of the bolt and a nut is tightened. Tightening the nut causes locking surfaces on the bolt retainer to engage with corresponding surfaces on the anchor channel which prevents the bolt retainer from exiting the anchor channel.

Abstract: An electronic component unit includes a semiconductor package mounted on a front surface of a substrate, a heat sink including a pushing plate installed on the semiconductor package, a reinforcing plate disposed on a back surface of the substrate, and a plurality of fasteners that connect corner portions of the pushing plate and the reinforcing plate to each other, wherein the semiconductor package is pressed and fixed on the substrate by fastening the plurality of fasteners, and the reinforcing plate includes a base plate portion including a connection portion to which each of the plurality of fasteners is connected, and a pressing plate portion which is disposed at a planar central side of the base plate portion, and separably laminated on the base plate portion to press the back surface of the substrate.

Abstract: A cone crusher includes an inner crushing shell supported on a crushing head and clamped thereon by a retaining arrangement, the crushing head being arranged for rotating about a crushing head axis. The retaining arrangement includes a first portion of a threaded joint for self-tightening the retaining arrangement. The first portion is concentric with the crushing head axis and rigidly joined with the crushing head. A first portion of a form-fitting engagement arrangement is rigidly joined with the inner crushing shell. A crushing shell tightener is provided with a second portion of the threaded joint and a second portion of the form-fitting engagement arrangement. The form-fitting engagement arrangement rotationally locks the crushing shell tightener to the inner crushing shell.

Abstract: A fastener useable with a system board is provided herein. The fastener includes a fastener body and a spool. The fastener body has a mating member at one end and a threaded member at an opposite end. The mating member extends from the fastener body and positions the fastener body on a chassis. The spool engages with the threaded member of the fastener body and is secured to the chassis.

Abstract: A system includes a nut plate and a polymer sleeve passing through the nut plate. The polymer sleeve contains adhesive for attachment of the nut plate to a substrate. The interior of the sleeve includes an epoxy and a catalyzing agent initially separated from one another, but mixed by kneading the sleeve. A portion of the sleeve can be used to apply the adhesive to a bottom surface of the nut plate.

Abstract: A threaded fastener assembly comprising a threaded fastener (12) and a length of locking wire (16) comprising a shape memory alloy material. The locking wire (16) is pre-worked such that the wire contracts when the locking wire (16) is heated from a temperature below an austenite start temperature (As) of the locking wire (16) to a temperature above the austenite start (As) temperature of the locking wire (16).

Abstract: A system includes a nut plate and a polymer sleeve passing through the nut plate. The polymer sleeve contains adhesive for attachment of the nut plate to a substrate. The interior of the sleeve includes an epoxy and a catalyzing agent initially separated from one another, but mixed by kneading the sleeve. A portion of the sleeve can be used to apply the adhesive to a bottom surface of the nut plate.

Abstract: A self-aligning coupling for lift guides, which consists of a core-mushroom element and wings. Each wing carries a through hole in its coupling zone and there are: under the wings an extra-flat plate provided with four through holes in correspondence with the orifices of two guides to be joined; on top of the wings, two extra-flat plates, each provided with two through holes in correspondence with two orifices of two guides to be joined. in said orifices, and retaining screws fastened with nuts; said screws presenting a conical head. The orifices of the plates are of greater diameter than the orifices of the wings. The distance between the orifices of the plates is shorter than the distance between the two orifices of the wings of the same side.

Abstract: The invention relates to a self-locking screwing attachment device (1a, 1b) including a nut (2a, 2b) screwed onto a threaded tip (3a, 3h) extending in a screwing axis (X), characterised in that the nut (2a, 2b) includes: a first element (6a, 6b) rotating relative to the tip (3a, 3b) when screwing; a second element (13a, 13b) rotatably engaged with the tip (3b) or an adjacent part (5) to be assembled, the tip (3a) passing therethrough; a stop member (23a, 23b) rotatably secured to the first element (6a, 6b); a releasable coupling means (26a, 26b, 27a, 27b, 28a, 28b) between the stop member (23a, 23b) and the second element (13a, 13b), the nut also being provided with an area for direct clamping between a first clamping surface (20a, 20b) of the first element (6a, 6b) and a second clamping surface (21a, 21b) of the second element (13a, 13b), when the second clement (13a, 13b) axially engages with the tip (3a, 3b) or said adjacent part (5) to be assembled.

Abstract: A securing element (26) for securing against the loosening by rotation of at least two screwable housing parts (3,2), the securing element (26) being arranged so as to be clamped in one of the housing parts (3) and interact with the other housing part (2).

Abstract: A tool and method of repair for removing a bulge in a stained glass window by providing at least one aperture in the metal earning of the stained glass window; positioning at least one threaded rod member through at least one of such aperture(s); further positioning two tool members one on each side of the stained glass window, each tool member having at least one aperture defined therein and a flat surface with the flat surface of one tool member being positioned against the bulge in the stained glass window and the other positioned behind the bulge, each of such tool members receiving such rod member(s), respectively, in such tool member aperture(s).

Abstract: A stem fastening structure includes a cap, a bolt and a packing member. The cap abuts against a top of a stem and corresponds to a top edge of a middle hole of a front fork. The bolt passes through the cap and penetrates into the middle hole. The packing member has a loop portion for the bolt screwing therethrough. Two sides of the loop portion extend upward and diverge from the other to form two bottom cone portions. Two positioning portions respectively and vertically extend upward from the two positioning portioning. Two top cone portions respectively extend upward from the two positioning portions, and approach the other. A top of each top cone portions abuts against the cap. Thereby, when the bolt drives the loop portion to move toward the cap, the positioning portions abut against the middle hole, so that the stem is fastened to the front fork.

Abstract: A method of retrofitting a generator set includes disconnecting a removable panel from a frame of a generator set housing. In order to accomplish this, short bolts associated with the removable panel are disconnected from nutserts that are permanently affixed to the frame. A removable panel compliance kit is installed to the generator set frame by threading long bolts through the nutserts and then attaching a pair of nuts in a locking configuration on each of the long bolts. The removable panel, which is modified to include keyhole shaped bolt openings, is then reconnected to the frame by advancing the long bolts further into the respective nutserts.

Abstract: The present invention discloses a pivotal disc is pivotally coupled to a first brace and a second brace. The pivotal disc has a motion-limit member and a positioning member limiting the angle by which the second brace rotates with respect to the first brace with the pivotal disc being the axis and fixing the angle between the first and second braces. The present invention is characterized in that the motion-limit member uses a range-adjust member to push a slide block and determine the range that a block portion of the second brace is blocked by the slide block, and that the positioning member uses a switch knob actuates on end of a positioning rod to engage with or depart from a positioning notch on the pivotal disc, and that the pivotal disc has two limit elements to define the maximum movement range of the first brace and the second brace.

Abstract: The invention has a captive tooless fastener for securing the engine intake air filter. The tooless fastener comprises shaft and associated bodies. The body has two arms oriented about 180 degrees apart. The shaft is threaded through a sealing washer and an aperture in a closed end cap of the air filter. The shaft is expanded so it cannot be removed from the end cap. The body's threaded inner diameter mates with a threaded portion of a central shaft in an air filter housing. The body's arms are rotated to screw the fastener and the shaft of the housing together. When tightened, the sealing washer closes the aperture. To remove the air filter, the fastener is unscrewed from the shaft of the housing and in the shaft floats in the aperture. A person in the field can remove the air filter by inserting fingers under the arms and pulling.

Abstract: A washer assembly for a threaded fastener said assembly including a first washer portion having an aperture through which the threaded fastener is to pass, and a surface surrounding said aperture; and a second washer portion, said second washer portion having an aperture through which the fastener is to pass, the second portion having a surface surrounding the aperture of the second portion and being positioned to abut the surface of the first portion and to be urged into contact therewith upon tensioning of the fastener; and wherein the surface of said second portion extends beyond the aperture of said first portion when the surfaces abut, the aperture of said first portion is dimensioned to provide for relative movement between the portions with the apertures aligned to provide for the insertion of the threaded fastener therethrough, and said surfaces have cooperating projections and recesses that inhibit relative movement between the portions when the threaded fastener is tensioned urging the surface of sa

Abstract: A fastener assembly comprises a stud bolt including a bolt portion and a weld end to be welded to a workpiece, and a nut member to be screwed into the stud bolt. The nut member screwed into the stud bolt before welding is formed out of an electrically conductive material to allow the welding current to flow through the nut member into the stud bolt and weld the nut member to the workpiece while connected to the stud bolt. Then an attachment member is disposed on top of the workpiece, and the attachment member is fastened to the workpiece when the nut member is turned in the fastening direction.

Abstract: A boss engaging apparatus for a portable communication device, the boss engaging apparatus including first and second boss housings formed in front and rear cases of the portable communication device, respectively, a screw engaging portion formed in the first boss housing, a screw tap provided in the second boss housing, and a screw-in portion formed in the screw engaging portion to protrude in an opposite direction to a direction of screw engagement and deformed in the direction of the screw engagement as contacting the screw during the screw engagement.

Abstract: A box section connector assembly includes a box section having a supportive weld collar positioned between the outer channel of the box section and the inner channel of the box section. The weld collar is fixedly attached to the inner channel. The weld collar includes a cylindrical body. The length of the cylindrical body is substantially equal to the distance between the inner side of the inner channel and the outer channel, thus the weld collar prevents the box section from being crushed upon attachment of the component to the box section by the bolt. In both embodiments the weld collar includes a flange which is attached to the outer side of the inner channel. In another embodiment the weld collar includes a shoulder which extends through an aperture formed through the outer channel in order to further locate both channels. A mechanical fastener such as a bolt is used to attach one or more attachable components to the box section.

Abstract: A universal suspended anchor system is configured for attaching to a frame having a first vertical wall and a second vertical wall having first and second bearing surfaces, respectively adjacent to and aligned with one another and defining a gap formed between the adjacent bearing surfaces. The universal suspended anchor system includes a bracket and a threaded block affixed to the bracket. The anchor is inserted into the gap and rests on the bearing surfaces. The anchor enables suspension of building service lines including water, HVAC and electrical services.

Abstract: A utility strap which may be used to retain utility lines may include a finger defining a receiving section wherein the receiving section is sized to hold utility lines; a tab extending from one end of the finger wherein the tab defines an attaching surface and the tab contains at least one aperture on the attaching surface; a bushing sized to fit into the at least one aperture and the bushing having a through hole sized to receive fasteners.

Abstract: A method for protecting a threaded metal joint from galling and corrosion includes providing a nanocrystalline coating on the metal surface. The nanocrystalline coating can include a solid or liquid lubricant to protect against wear. Threaded metal joint surfaces coated with the nanocrystalline coating can resist galling under high pressure and high torque, even after several fastening and unfastening operations and also over a long period of time. Protection from corrosion is also provided by the nanocrystalline coating. The method and nanocrystalline coating provide metal surfaces with both lubrication and protection against corrosion. Problems such as removal or leakage, which are associated with protective compounds that use oils, are avoided. The nanocrystalline coatings may be layers of the same material, or layers of differing materials, such as layers with lubricating particles dispersed throughout, and layers without lubricating particles.

Abstract: A fastening device is provided for fastening at least one article on a carrier. The fastening device includes at least one positioning component, a fixed plate fixed on the carrier, and a pressing plate positioned on the fixed plate by the positioning component. The pressing plate has at least one positioned portion and a retaining plate corresponding to the fixed plate. The retaining plate abuts against a side edge of the article for preventing the article from moving along a first direction. The positioning component movably passes through the positioned portion to allow the pressing plate to selectively move along the first direction and be positioned on the fixed plate for adjusting the distance between the retaining plate and the fixed plate.

Abstract: Provided are a connection apparatus and a connection method capable of rapidly and fixing a pre-cast deck slab with a beam. The connection apparatus includes a main body buried in the pre-cast deck slab and having a hollow part formed in an axial direction thereof! a plurality of support portions integrally formed with an outer surface of the main body, each of which has a body having a certain length and a hook integrally formed with an end of the body; a bolt having a bolt body inserted into the hollow part of the main body and a fixing hole of the beam, and a head integrally formed with an upper end of the bolt body! and a nut threadedly engaged with the bolt body of the bolt.

Abstract: An isolated fuel delivery system for an internal combustion engine includes a fuel rail with a clamping method operable to retain an isolating member with respect to the fuel rail. The isolating member operates to isolate the vibratory motion of the fuel delivery system form the attachment point or points. The attachment point is typically a cylinder head of the internal combustion engine. Additionally, an isolating ring assembly is provided having a first and second stiffening member with an isolating ring member disposed therebetween. The isolating ring assembly is disposed between a fuel injector of the isolated fuel delivery system and the cylinder head. The isolating ring member operates to isolate the vibratory motion of the fuel injector from the internal combustion engine.

Abstract: A screw-type fastener includes an internal cinching mechanism that physically locks exposed threads of a screw outside a housing after a certain number of turns. The fastener may for example, be affixed to a faceplate of a printed circuit board. The exposed threads may then be rotated to threadably engage corresponding threads of a sub-rack or other enclosure in a manner that prevents movement of the faceplate relative to the enclosure as the screw engages the enclosure. When the internal cinching mechanism is locked, the physical relationship (e.g., distance) between the faceplate and the sub-rack is retained until the fastener is unscrewed.

Abstract: A knee brace is provided with push button actuatable stops, wherein the stops are biased outward into angular locking positions and inwardly directed pressure on the push buttons releases the stops and permits angular adjustment of the stops. A pair of catch plates with locking recesses facing inward, are provided, and outwardly biased locking pins engage the recesses in both catch plates. Each of the stop assemblies has an outwardly directed plate extending over the outer cover plate, and this plate is coupled to the physical stop member around the outer edge of the outer cover plate. The cover plate has angular indicia thereon, which may be viewed through windows in the outwardly extending plate portions of the stop assemblies.

Abstract: Disclosed are fasteners that include an electrically conductive material and a film-forming composition deposited on at least a portion of the material. The film-forming composition comprises a nitrogen-containing heterocyclic compound. The fasteners are suitable for use with wood that has been treated with a chrome-free copper containing wood preservative. Also disclosed are packages that include a plurality of such fasteners and articles that include a piece of wood in contact with such a fastener.

Abstract: The invention relates to a T-nut insertion method and an apparatus of the type for driving T-nuts into e.g. a wooden work piece with predrilled holes. A T-nut strip with improved and controllable rupture characteristics is also disclosed. Finally, embodiments of T-nuts with T-nut strip cutting protrusions or shapes are also disclosed. By applying the method according to the invention, a safe and precise insertion of T-nuts is obtained without the risk of T-nuts accidentally being driven from the apparatus and without the risk of the T-nuts being driven into the work piece at locations beside the predrilled holes.

Abstract: A concave bearing surface for use with lugs of pipe coupling segments is disclosed. The concave bearing surface is positioned on the lug and surrounds an aperture which receives a fastener attaching the coupling segments together end to end surrounding pipe ends to be joined. Either the nut or the head of the fastener that engages the concave surface may be rotated to tighten the fastener. Engagement between the concave surface and the rotating member reduces the torque required to tighten the fastener and effect a stiff, fluid tight joint. A method of securing pipe ends using coupling segments with concave bearing surfaces is also disclosed.

Abstract: A fastener (20) comprises a fixing post (21) and a washer (25). The fixing post has a locking tongue (213) and a slot (2110) just above the locking tongue. The washer defines a hole (253) and has at least one tab (255) near the hole. The fixing post extends through a heat sink (100) and engages with the washer by fitting the washer into the slot, whereby the washer is sandwiched between the locking tongue and a base (12) of the heat sink and the fixing post is securely attached to the heat sink. The tab engages with a straight side of the locking tongue. The fixing post is used for threadedly engaging with a screw thereby attaching the heat sink to an electronic device mounted on a printed circuit board.

Abstract: A striker apparatus for mounting to a support structure of a vehicle and for engagement with a corresponding latching mechanism can include a striker, and a base plate for supporting the striker extending outwardly from a first surface. A second surface opposite from the first surface of the base plate can include at least one radius of curvature defining a generally concave profile on the second surface or through the entire base plate. The base plate includes sufficient flexure to be substantially positioned in mating contact with a support structure of the vehicle when attached by one or more fasteners.

Abstract: A fastening arrangement having a first fastening part which is connected to a metal sheet and has a first threaded section, and having a second fastening part which has a second threaded section which engages with the first threaded section, with the fastening parts fixing an electrical connecting part such that an electrical connection is formed between the connecting part and the metal sheet. A cover part is fixed to the first fastening part in an end position and, in a covering position, has covered at least a part of the first threaded section until the second threaded section has engaged with the first threaded section and, in the process, the cover part has been moved from the covering position to the end position.

Abstract: A prearrangement for mounting lugs (12) on a retaining screw (24) includes a distributor (10) and at least two lugs (12) each with a fixing hole (13). The lugs are each inserted in the distributor in such a way that the fixing holes are substantially in alignment with each other. A mounting aid (16) is connected detachably to the distributor and has a protruding centering element (20) having a cross section substantially corresponding to the cross section of the retaining screw. The centering element passes through the fixing holes in the lugs. The end (30) of the centering element facing the retaining screw has an engagement section for engagement with the screw.

Abstract: A molded product includes a receiving member in a body. A coupling component such as a female screw component is embedded in the receiving member. A connecting piece is formed continuous to the body and the receiving member based on integral molding. The connecting piece extends to the receiving member from the body inside a bore formed in the body. The connecting piece may form a single flat plate in the molded product, so that a general cutting device can be utilized to cut through the connecting piece in a facilitated manner. The receiving member can be removed from the body without any difficulty. The receiving member can be separated from the body.

Abstract: Disclosed is an assembly for assisting in the attachment of an appliance such as a winch to a surface (e.g. deck) of a watercraft such as a sailing boat. Fixing screws are retained in apertures in the winch by retaining means such as lock washers. The assembly of the winch and screws may therefore be produced at a location remote from the watercraft, the retaining means holding the screws against rotation during transportation and during fixing of the appliance to the surface of the watercraft.

Abstract: A circuit board threadplate for connection of a component to a circuit board is provided wherein such threadplate may be mechanically mounted to a circuit board without the use of manual labor. Specifically, the threadplate is compatible with present Surface Mount Technology robotic placement machines. Such circuit board threadplate comprises a hollow substantially cylindrical member forming an extruded neck having an elongated section and a substantially flat surface at a first end of the elongated section and a flange extending from a second end of the elongated section. The flange provides a substantially flat surface suitable for soldering onto a surface of a circuit board. Additionally, the threadplate comprises a cylindrical cavity positioned inside the substantially cylindrical member, extending in a direction aligned with the substantially cylindrical member. The cylindrical cavity may have a thread pattern suitable for receiving a screw-type fastener.

Abstract: A spindle to aluminum wheel carrier mounting is provided having increased contact area for reducing stress in the aluminum. The wheel assembly comprises a spindle, a wheel carrier, and a fastener. The spindle is comprised of ferrous material and includes a shank portion, a boss portion, and a fastening portion. The boss portion has a monotonically changing diameter along its longitudinal axis. The wheel carrier is adapted to be supported by a suspension system of the vehicle and has a wheel-facing side. The wheel carrier is comprised of aluminum and has a spindle-receiving aperture therethrough. The aperture has a variable diameter along its length to form a boss-receiving socket. The boss-receiving socket has a monotonically changing diameter substantially matching the boss portion. A fastener is joined to the fastening portion and draws the boss portion against the boss-receiving socket. Consequently, stresses in the aluminum wheel carrier are distributed over the boss-receiving socket.

Abstract: A connector for oilfield applications has high resistance against cyclical bending stress and fatigue failure. In a preferred embodiment, the threaded connector has a pin-box arrangement for joining two components. The pin and box have threads with a pre-determined profile different from that specified by conventional (e.g., API) specification and provide improved strength characteristics. Certain embodiments of the present invention include a pitch-to-root radius ratio that is less than that specified by the API, a thread height-to-root radius ratio that is less than that specified by the API, a flank angle that is less than that specified by the API, and a taper that is less than that specified by the API for said pre-determined outside diameter. Certain other embodiments have less than all of these ratios and dimensions.

Abstract: A propeller attachment is disclosed including a body, the body including an anodic material, at least one projection projecting from the body, and a fastener coupled to the body. An anode is also disclosed including an annular body constructed from an anodic material, a fastener disposed centrally in the annular body, and at least one extension coupled to the annular body, the at least one extension is configured to allow for gripping of the anode. A fastener for coupling a propeller to a drive shaft of a lower unit is disclosed including a fastening portion configured to threadably engage the drive shaft and retain the propeller. The fastener further includes an anodic portion disposed around the fastening portion. The anodic portion is shaped to form at least one grip, and the anodic portion preferentially corrodes to prevent corrosion of the lower unit.