Abstract: A high-speed lock nut, especially for attaching a vehicle wheel to the clamping shift of a balancing machine, has a casing or body in which at least one threaded segment is positioned in a radially movable manner. Manually actuating means serve to move the segment radially. The actuating means engage with the segment by means of a radially-acting connecting link guide comprising pins on the segments and cooperating oblique slots in a coaxial disk. By means of the connecting link guide, the segment can be activated easily and securely, even under high contact pressures, for example, with contaminated threads. Furthermore, the thread segment is automatically locked in closed position against the threaded shaft of the balancing machine by the connecting link guide. The construction is very simple.

Abstract: A security fastener has a threaded body with tool engaging surfaces. It is surrounded by a freely rotatable spinner. When the fastener is tightened down the tool engaging surfaces are removed so there is nothing on the fastener to be engaged by a tool. The side of the fastener is shielded by the rotatable spinner.

Abstract: A multi-part locknut including a locknut body, a locknut head having an endless curvilinear key-receiving groove therein secured to the locknut body, and a locknut sleeve rotatably mounted on the locknut body and held in position between portions of the locknut head and locknut body.

Abstract: A fluid actuated nut having a cylindrical casing engageable at an inner end with a base, the casing containing a coaxial relatively axially shiftable plunger having an inwardly opening partial central bore for threadedly receiving a shank of a bolt, a compression spring acting outwardly on the plunger and inwardly against the casing, and a fluid pressure chamber in the casing outwardly of the piston, the nut being applied by screwing the piston onto the bolt shank to the point of engagement of the inner end of the casing with the base and tightened by sequentially compressing the spring by fluid injected under pressure in the fluid chamber for shifting the casing away from the base, turning the casing to reengage the base and releasing the fluid pressure to expand the spring, and repeating the sequence as necessary to produce the desired tensile and/or compressive force, the nut being loosened by applying fluid pressure to advance the plunger for compressing the spring and disengaging the casing from the base

Abstract: A fastener assembly of the nut and washer type includes a washer member having a skirt portion and an end portion to which a nut member is secured. A collar section connects the skirt portion to the end portion. The collar section is designed to fracture at a predetermined torque load such that the nut and the end portion of the washer secured thereto will rotate with respect to the skirt portion.

Abstract: Disclosed herein an improved ground anchor with recoverable steel rods which is characterized by the design of a socket having a plurality of tapered holes for fixing of steel rods from the top and two semi-conical wedges at the bottom of each hole to fix the steel rods by frictional force. The fixing holes are designed with external wall having tensile strength smaller than that of the steel rods so that application of any normal extractor to pull out the steel rods will distort and break the external wall of the holes first, the friction among the semi-conical wedges and steel rods will be overcome consequently, and thus the steel rods can be extracted and recovered easily. It is further characterized by the design of swingable arms, each with a left cutting edge in a form of slightly turning outward for cutting earth in order to ease its extension, and a recession at the external curved surface to reduce friction between the swingable arm and the earth.

Abstract: A torque limiting fastener in which a torque limiting coupling between telescoping head and driven elements includes a resilient spring carried by one element and a complementary recess formed in the other element, the engagement of the spring with the complementary recess resisting both axial and rotational displacement of the head element relative to the driven element when the head element is rotated in the tightening direction, and further includes a surface forming one end of the recess engageable by the spring to establish a positive connection between the elements when the head element is turned in the loosening or unscrewing direction.

Abstract: A clip nut comprises a body having a channel-shaped part having two opposed portions and an extension part united by a hinge portion to one of said opposed portions. The extension part has a nut retaining section, and it can be overlapped over one of the opposed portions with a nut accommodated in the nut retaining section. In this state, a panel is fitted in the space between the two opposed portions, and a bolt can be inserted through the channel-shaped part and panel and screwed into the nut.

Abstract: A nut/clutch assembly for a rotary power screw, such as a linear actuator power screw, is disclosed in which the power screw is selectively rotated in one direction or the other, and in which the power screw has a pair of stops spaced apart from one another and which are rotatable with the power screw. A nut is provided having a central opening threadably engageable with the power screw, and the nut is threadably movable in axial direction along the power screw upon rotation of the latter. The nut has a circumferential groove thereon, and this groove has a base and a pair of spaced side walls. A collar is slidably received within the circumferential groove, and the collar is resiliently clamped onto the nut such that the collar frictionally engages the grooved base with a desired frictional force so as to permit the nut to rotate relative to the collar upon the nut being rotatably driven by the screw, and upon the collar being held in fixed rotary position.

Abstract: A pair of legs depending from the ring of a lock nut carrier pass through oppositely disposed arcuate slits in a spring clip and cleave to the lock nut so that the spring clip will support the nut within a metal channel framing member. The carrier and nut are locked into position ready to receive a fastener by pushing down on the carrier and spring clip with a thumb or finger and rotating the carrier legs within the arcuate slits.

Abstract: A railroad vehicle end-of-car center coupler includes a telescopic energy absorber comprising a hollow cylindrical plunger in a cylinder having one closed end. The plunger has an aperture in its inner end wall. A perforated metering tube is fixed in the closed end wall by a special fixing arrangement. It projects through the aperture and carries an annular piston head which slides in the bore of the plunger. A floating piston divides the interior of the plunger into a gas space and a liquid chamber. Four direct acting pressure relief valves are mounted in the piston head. Conduits through the tube connect their inlets to respective ones of four axially-spaced ports in the outer surface of the tube so that they all communicate with the annular chamber that surrounds the tube within the plunger when the absorber is compressed and so that they are progressively cut-off from such communication during the final stages of extension of the absorber.

Abstract: A low-profile fastener for securing parts such as swaybrace pads, mounting locks and suspension loops onto exterior surfaces of multiple ejector racks in aircraft. The fastener consists of a retainer housing formed with an annular neck and a thin wrench head, and an insert threaded into the nut with internal threads. The fastener neck is inserted from within the rack through a mounting hole aligned with a hole of the part to be secured. A bolt inserted through the holes from the exposed side of the part is screwed into the insert and tightened to the desired torque. The thin wrench head is the only portion of the fastener protruding into the rack.

Abstract: A breakaway standard support assembly has a base member, a standard member, and a coupler securing the base member to the standard member. The coupler has a coupler body assembly consisting of a plurality of body elements which are secured to each other and retained in such position by band means. The body element which cooperate to define the coupler assembly may be in mechanical interengagement. The coupler is sufficiently strong to support the static loading, normal wind forces and other forces encountered in normal use, but is adapted to fracture upon application of a horizontal impact load as by a vehicle, for example, so as to permit the stanadard to absorb shock and yet be moved out of its fixed position. The strap members may have weakened a portion such as a reduced thickness portion to facilitate fracture at a predetermined load level.

Abstract: A fastening device adapted for quick attachment to a threaded rod at any point along the length of the rod, comprising a fastening element having a web and first and second generally flat flanges extending outwardly from the web in spaced-apart substantially parallel relation. Each flange has opposite side edges and an outer edge opposite the web. A pair of recesses extend inwardly from respective side edges of the flanges at opposite sides of the fastening element, the recesses having rounded generally concentric inner edges threaded to mate with the threads of the threaded rod. A retainer is provided for retaining the inner edges in threaded engagement with the rod.

Abstract: The shaft and bush device includes a shaft, a bush having a slit in its axial direction and a pressing member which forces the bush inwardly to contact with the shaft so that the bush and shaft are pressed to each other without any clearance. The shaft and the bush may be a screw shaft and a nut engaging the screw shaft or a pin and a nut engaging the pin.A tilting steering apparatus has this shaft and bush device. Namely the device is used as a pivot pin connecting an upper bracket rotatably holding an upper steering shaft and main bracket fixed to a body of an automobile. The device is also used for an expansion-shrinking device which swings the upper bracket against the main bracket. The expansion-shrinking device has a screw shaft and nut which form the shaft and bush device.

Abstract: A receptacle (10) is incorporated into the floor (2) of an aircraft cargo compartment. Receptacle (10) has a socket (12) that receives a head (30) of a stud (24). Shaft (26) of stud (24) extends through panel (6). Nut (70) is threadedly tightened onto shaft (26) to secure panel (6) thereto. Nut (70) has a socket (80) isolated from threaded hole (72) that engages shaft (26). Socket (80) is substantially identical to socket (12). A second stud (48) is engaged in socket (80) and in turn engages cargo restraining means.

Abstract: A plurality of jack bolts are threadedly engaged with openings in a flange on a fastener to stress a shank part of the fastener. The flange can be a collar retained on a shaft by a retainer, a nut on a threaded end of a bolt or the head portion of a bolt. The jack bolts can be arranged in a flange on an end of the tension rod to stress arbors against opposite sides of a roll sleeve to form a roll assembly for use in a rolling mill.

Abstract: An anti-theft nut for forward threading on a threaded member and having removal preventing means. The nut has a nut case with an axially extending skirt and two axially extending blind bores, and a bottom nut attached to the skirt to define and inner cavity. Two roll pins of different lengths are assembled within the axially extending bores. An internal nut having an engagement shoulder for engagment by the roll pins, and a bearing disposed between the internal nut and the bottom nut are assembled within the nut cavity. The longer of the roll pins extends from its bore in the nut case to engage the shoulder of the internal nut to effect the forward threading of the anti-theft nut. Unthreading of the anti-theft nut is prevented due to jamming between the bottom nut, through the bearing, with the internal nut prior to possible engagement of the longer roll pin with the opposite side of the shoulder of the internal nut.

Abstract: An improved split nut for use in blowout preventers temporarily installed on oil or gas wells is formed by fastening a base and a cap together. Fastening bolts are inserted through holes in the cap and in packing inserts in the base, and threaded into fastening nuts positioned within recesses in the base. Plugs seal the recesses from corrosive materials and hold the fastening nuts in position for convenient assembly. The packing inserts are compressed when the fastening nuts and bolts are tightened to seal the threads of the fastening bolts and nuts from corrosive materials that may seep through the cap holes.

Abstract: A composite molded plastic article includes a metal nut insert adapted to be molded in place within the body of plastic material. The nut insert is adapted to be mounted on a pin projecting into a mold cavity of the mold used in forming the article. The nut insert includes a central bore extending between a pair of parallel, planar faces of polygonal outline and defining along the edges thereof a first pair of substantially planar, opposite side edges which angularly intersect a second pair of opposite side edges having a longitudinally extending groove therein and/or a parallel rib between the parallel, planar faces of the nut insert.

Abstract: In a locking latch assembly for mounting an electronic component drawer in a rack a clamping ring 30 is provided with plug and socket elements 46, 48 adapted to cooperate with a dynamometric key. An all metal hollow cylindrical spring cushion 44 is received within the cup-shaped clamping ring, a support stud 32 formed integral with the clamping ring 30 supporting the interior surface of the spring cushion along a portion of the axial extent thereof. The free end face of the spring cushion 44 forms a thrust bearing cooperating with a latch ring 52 adapted to receive a latch hook 60 fixed to the drawer. The clamp ring 30 runs on a threaded bolt 22 being in turn pivotally connected to drawer support rails 12 through a pivot pin 18.

Abstract: A self-locking nut has a threaded bore for receiving the threaded shank of a co-operating bolt, which bore terminates within the nut body in a reduced bore diameter portion which may be unthreaded. The maximum diameter of this portion is less than the maximum diameter of the remainder of the bore. The nut body is formed of a plastics or other lightweight material and is reinforced by one or more inclusions of predetermined axial extent, formed of a material having a tensile strength greater than the material of the nut body, and embedded or encastred within the material of the nut body at a greater radius than the maximum radius of the thread.

Abstract: Disclosed is a new fastening system particularly for fastening of fiber-reinforced polyester/plywood panels 14 to metallic structural members 16 in sealing engagement through apertures 18. The system has a sealing capped nut 10 for receiving in threaded engagement a bolt 12. Upon such engagement a formable shank portion 40 of the sealing capped nut 10 is deformed in a designed fashion to form a seal between the bolt 12 and the aperture 18 opening.

Abstract: A threaded member has an external helical thread 18a presenting a crest 24 of spiral outline whose trailing end is in the form of an abutment 26 for resisting withdrawal from a resiliently deformable workpiece. In a preferred application, the threaded member is a die-cast grub screw S and locates within a hinged plastics furniture fastener F. Advancing the grub screw S by 1/2-turn from its initial position in the fastener F breaks a frangible locating web 28 and allows the abutment 26 to pass an abrupt shoulder 64. This gives a tangible warning to the user that a ridge 12b on the grub screw S is correctly located beneath a head H of an anchor A.

Abstract: A lock device (30) is provided to securely attach with an elongate member (16). The locking device (30) includes a pair of parts (32, 34) with openings for receiving the elongate member (16). One of the parts (32) is prevented from rotating on the elongate member (16) and the other part 34 forms teeth (48) which are capable of engaging teeth (40) on the elongate member (16) to prevent axial movement of the pair of parts (32, 34) on the elongate member (16).

Abstract: A union nut, for cooperation with a first tube having an external thread and a second tube having a radially outwardly projecting flange, has an annular body with an internal thread to engage with the external thread of the first tube, the body being made of a synthetic resinous plastics materials of adequate strength to resist forces exerted by tightening of the nut, and a tool-engaging abutment element secured releasably on the body and at least partially projecting radially inwardly beyond the internal thread of the body so as to be able to abut axially against a flange on the other tube. Tightening of the nut onto the threaded tube draws the two tubes axially together. The abutment element is made of a material, e.g. stainless steel, selected to have adequate strength to resist bending or fracture under the axial forces applied, and to resist damage by the application of a tool to the nut.

Abstract: A hydro-air jet assembly wherein a ball-shaped element has a first passageway therethrough communicating with an air supply and a second passage therethrough communicating with a water supply which is rotatably mounted in a housing and has a venturi nozzle secured to the ball to corotate therewith but which is adjustable in an axial direction with respect to the ball member providing constant water and air flow rates through the ball and nozzle assembly regardless of the angular position of the ball. A venturi nozzle holder is used which provides a novel means of securing the adjustable venturi nozzle to the ball member.

Abstract: A laminated nut composed of laminations of tapped conical spring washer segments in which at least one of the segments has a different load-deflection ratio than another segment, thereby to provide for more uniform loading of the threads on the laminated segments, and to provide for self locking of the nut on the bolt by thread interference. A lock mechanism is also provided that automatically and positively locks the nut to the associated bolt, as is required for safety purposes and to avoid legal charges of product liability.

Abstract: A fastener clip for detachably securing functional elements to a support plate through threaded pins rigidly joined to the plate which includes holding members forming channels which receive the functional components and a fastening hole between the channels and adapted to receive the threaded fastener. The fastening hole has an inside diameter slightly less than the outside diameter of the pin and is interrupted by a plurality of apertures extending through opposite side walls of the clip between the channels. Semi-circular wall portions at the end of each aperture define the fastening hole and elastically yield when the clip is forced on the threaded pin.

Abstract: A bolt comprises a tapered shank. The shank comprises an outer member with a cylindrical bore and an inner member with a cylindrical outer surface that is a close fit in the cylindrical bore. The inner member is secured to the outer member at the broader end of the shank and a screw thread is secured on a portion of the inner member projecting from the narrower end of the outer member, for receiving a nut which is used in tensioning the bolt into the workpiece.

Abstract: The invention relates to fastening means of the known kind comprising a nut or bolthead and a spanner component, the nut or bolthead having a smooth edge surface and the spanner component having locating pins adapted to engage in cooperating bores in the nut or bolthead to rotate the nut or bolthead with the spanner component. Said fastening means are improved by providing (a) a sleeve which rotatably covers at least part of said edge surface and/or (b) an axial projection, preferably on the nut or bolthead, which is received as a rotatable fit in a recess, preferably in the spanner component, to restrict lateral movement between the nut or bolthead and the spanner component.

Abstract: A grommet attached to a top panel captures a stud nut of a panel fastener through a retaining ring held by the grommet. A complimentary stud assembly attaches to a subpanel and receives the stud nut to clamp the panels together. The grommet has a stand-off base that projects axially from a counterbore in the top panel to form a barrier for a gasket. A flared end of the grommet and the standoff base clamp the top panel between them. The retaining ring compressively bears radially against the stud nut to retain it in any desired axial position and maintain axial alignment of the stud nut. The stud nut can draw completely into the top panel. The stud nut has a clear-through bore threaded at one end. A wrenching recess, defined by a hardened insert, occupies the other end of the bore. A plug separates the wrenching recess from the threads. A basket of the stud assembly attaches to the subpanel by rivets. A barrel attaches to the basket through lugs engaged in slots of down turned wings of the basket.

Abstract: The invention relates to a fixing device for securing any part to a holding member. The fixing device comprises spreadable means in a hole or bore formed in the holding member on the one hand, and on the other hand spreading means. An actuating means is provided to drive the spreading means into the spreadable means so that depending on the length of penetration of the spreading means thereinto the fixing device can be blocked on the holding member and accommodates any thickness variations of said holding member. The invention is used to secure by means of a screw or rivet any part on a holding member such as a panel.