Abstract: A lock nut includes: a first nut having a tapered cavity; and a second nut including a base portion and a tapered lug boss arranged the base portion. The tapered lug boss can be coupled inside the tapered cavity. The first and second nuts are used in pair by self-locking. A straight slot is formed in the lug boss. Under the locking action of the first nut, the straight slot is deformed to further lock a bolt, or is discontinuously engaged with teeth of the bolt to increase an effective stress surface and locking performance of the second nut for locking the bolt. A convex reinforcing rib extends on a first surface of the first nut. An annular groove is formed in a second surface of the second nut. The convex reinforcing rib is coupled with the annular groove to enhance the strength and reliability of locking.

Abstract: An electrical ground strap assembly for attaching a terminal, the electrical ground strap assembly including a bolt and a crown. The bolt includes a head, a body including an incline portion, and a shaft, the incline portion is oriented at an acute angle with respect to a planar surface of the head. The crown includes a chamfer, the chamfer oriented at an angle corresponding to the incline portion of the bolt.

Abstract: The present disclosure disclosures a mounting and dismounting nut structure. The mounting and dismounting nut structure comprises a first body, a second body, a plurality of threaded blocks, and a limiting member. Inner walls of the plurality of threaded blocks comprise internal threads, and outer walls of the plurality of threaded blocks comprise second inclined surfaces. When the mounting and dismounting nut structure surrounds the threaded rod and is pushed towards a countertop, the plurality of threaded blocks move toward a center axis of the plurality of threaded blocks, and the second body rotates to drive the plurality of threaded blocks to be locked with the threaded rod. When the plurality of threaded blocks is locked with the threaded rod, the limiting member supports the plurality of threaded blocks in an axial direction of the plurality of threaded blocks.

Abstract: A system for connecting a male component to a female component comprises a male component comprising a main body including a first compression face, a first tension face, and an outer surface that includes a plurality of first longitudinal splines; a middle element including an inner surface, an outer surface, and a second tension face configured to engage the first tension face, the inner surface including a plurality of second longitudinal splines corresponding to and engaging the first longitudinal splines so as to form a splined interface and the outer surface including a threaded section; and a female component defining a box, the box including a second compression face for engaging the first compression face and an inner wall that includes a wall threaded section corresponding to and engaging the middle element threaded section. The middle element may comprise a plurality of azimuthal segments.

Abstract: A waste-gas line has a first pipe section connectable to a battery and having an inlet end and a first flange, a separate second pipe section having a second outlet end and a second flange, and an inner sleeve and an outer sleeve, both of a non-conductive material. The inner sleeve is positioned on an outer side of the first flange and of the second flange. The outer sleeve surrounds the first flange, the second flange and the inner sleeve. The first and the second flanges are fastened to one another in such a way that at least the second pipe section is electrically insulated by the inner and the outer sleeves and, by the combination of inner and outer sleeves, is heat-resistant up to a temperature of at least 1100° C. and pressure-resistant up to a pressure of at least 8 bar, for a duration of at least 120 seconds.

Abstract: A faucet mounting structure includes a pipe connector and a fixing assembly in cooperation with the pipe connector. The fixing assembly includes an upper main body and a lower main body. A first inclined surface of the upper main body and a second inclined surfaces of the lower main body are pressed against each other or separated from each other, so that a press ring of the lower main body is compressed or returned for engaging with or disengaging from an external thread of the pipe connector to realize the quick assembly and disassembly of the pipe connector and the fixing assembly, and the quick assembly and disassembly of the faucet body is realized.

Abstract: Bolt holes 16 are formed in a joint part 14 of a turbine housing 12, with flanged bolts 40 screwed in the bolt holes 16. A flange part 32 of a bearing housing 30 is sandwiched between bearing surfaces 44a of the flanged bolts 40 and an inner end face 14b of the joint part 14. A sealing ring 48 is interposed in an annular space s. Before the flanged bolts 40 are fastened, there is formed a height difference G equivalent to a compression allowance h for the sealing ring 48, between an outer end face 60a of the joint part 14 and a bolt receiving surface 32a of the flange part 32. The flanged bolts 40 are screwed into the bolt holes 16 until the bearing surfaces 44a make tight contact with the outer end face 60a so as to resiliently deform the sealing ring 48.

Abstract: A securement device includes a pair of plungers movable within a housing. The plungers act as quick lock mechanism to engage and secure a threaded rod (or other object) that passes into a hole that runs through the housing. The plungers are spring-biased to position themselves toward so as to provide a radially inward force, for example to engage a threaded rod or device in the through hole in the housing. A spring within the housing presses the plunger pieces toward a portion of the housing where the outer surfaces engage other surfaces to push the plungers inward. The device includes a disengagement feature or mechanism that is used to push the plunger pieces out of engagement with the threaded rod. The disengagement feature may include a disengagement tool, and may include wings, such as on the plungers or on carriers for the plungers, that protrude out of the housing.

Abstract: A connection between a first component and a second component is provided including a first hole formed in a portion of the first component and a second hole formed in a portion of the second component. The second hole is aligned with the first hole. A pin includes a through hole having a pin hole diameter. The pin extends through a portion of the first hole and into a first portion of the second hole. The pin is configured to absorb a shear load applied to the connection. A bolt extends through the second hole and the pin such that a clearance fit is formed between the bolt and the pin. The bolt is configured to absorb an axial load applied to the connection. A nut connected to the free end of the bolt limits movement of the bolt relative to the first and second component.

Abstract: Frames for plug connectors capable of being a reduced size may include features to support contacts, house circuitry for coupling with the contacts, facilitate the flow of molten material during the molding of the frame, and allow for ease of insertion and removal of the plug connector to and from a corresponding receptacle connector. For example, a frame may include ledges, interlocks, and rounded and tapered openings. Methods for manufacturing the frame are also provided.

Abstract: The invention provides a split nut connector in which spaced apart nut sections enable the connector to slide over a threaded battery terminal post until contact is made with the battery cable lug and the threaded nut sections are pushed into engagement with the threaded battery terminal post enabling effective tightening of the nut with a minimal amount of rotation in the fastening direction.

Abstract: A retaining nut comprises a nut body and a plurality of axially extending integrally formed deflectable locking fingers. The locking fingers have a frusto-conical surface opposite a threaded surface. The frusto-conical surface of the locking fingers are adapted to co-operate with a conical washer. Tightening the threaded nut on a threaded shaft against the washer causes the locking fingers to deflect radially towards the shaft. This provides a secure radial clamping of the nut on the shaft.

Abstract: A nut and an assembly including such a nut are described herein, wherein the nut includes an outer shell having an outer surface, an inner circumferential surface having a inwardly extending flange, and an upper rim portion; and an insert piece having an upper outwardly extending portion and a plurality of downwardly extending projections, wherein each of the projections has an outer surface and an inner surface, a portion of the inner surfaces of the projections is configured to engage a nut-receiving surface and the outer portion of the projections is configured to engage the inner circumferential surface of the first outer shell such that upon a pushing action of a user the inwardly extending flange on the outer shell presses upwardly on the upper outwardly extending portion of the insert piece so that the portion of the inner surfaces of the projections configured to receive a nut-receiving surface moves outwardly and upon removal of the pushing action, portion of the inner surfaces of the projections con

Abstract: The invention relates to a retaining device for retaining objects on a vehicle wall, comprising: a supporting element (4) for placing on a front side (2) of the wall (1) with devices (5) for retaining one or a plurality of objects (6) and a fastening element (8, 9) for locking the supporting element (4) on a rear side (3) of the wall (1), as well as a method for mounting objects with this retaining device. In order to reduce the installation cost, and in order not to be dependent on the supporting wall thickness, the fastening element (8) is pin-shaped and has a head (9) at one end so that it can be inserted through an opening (7) in the wall (1) and can be prevented against sliding out in one direction, and the supporting element (4) comprises a connecting device (13) with which the supporting element (4) can be solidly connected to the fastening element (8) projecting from the front side (2) of the wall.

Abstract: A nut and an assembly including such a nut are described herein, wherein the nut includes an outer shell having an outer surface, an inner circumferential surface having a inwardly extending flange, and an upper rim portion; and an insert piece having an upper outwardly extending portion and a plurality of downwardly extending projections, wherein each of the projections has an outer surface and an inner surface, a portion of the inner surfaces of the projections is configured to engage a nut-receiving surface and the outer portion of the projections is configured to engage the inner circumferential surface of the first outer shell such that upon a pushing action of a user the inwardly extending flange on the outer shell presses upwardly on the upper outwardly extending portion of the insert piece so that the portion of the inner surfaces of the projections configured to receive a nut-receiving surface moves outwardly and upon removal of the pushing action, portion of the inner surfaces of the projections con

Abstract: The invention relates to an industrial truck having a mounting plate and an add-on unit, which is fixed to said mounting plate by means of at least one fixing means, a bearing surface, which points towards the mounting plate, of the add-on unit being in touching contact with a mounting surface, which points towards the add-on unit, of the mounting plate, and at least one of the surfaces (bearing surface and mounting surface) being formed such that it is curved convexly at least in the section of the touching contact.

Abstract: A fastener assembly includes a washer element and a nut element. The nut element is split and includes a screw thread that threadably engages the thread of a bolt or other such fastener element to lock the nut to the bolt. The nut element is adapted by the split to assume an open configuration which permits the nut to move freely along the bolt without being threadably engaged with the bolt and a closed configuration which threadably engages the screw thread of the nut with the screw thread of the bolt. The washer is sized to move freely over the screw thread of the bolt, but to force the nut into the closed configuration when the washer and the nut are cooperatively engaged. The washer maintains the nut in threaded engagement with the bolt when the washer and the nut are cooperatively engaged on the bolt.

Abstract: A fastener includes a sleeve-like clamping element having a cavity extending in the direction of its longitudinal axis which accommodates a threaded stud. At least one clamping region is deformable into the cavity forming at least one clamping ramp inclined toward the longitudinal axis on an outside of the clamping element. A clamping sleeve pushed onto the clamping element in an installed state grips around the clamping element. A clamping sleeve inner surface cooperates with the clamping ramp so the clamping region reaches a clamping position deformed into the cavity to hold the threaded stud. The clamping element has a forward end flange in an installation direction. Coupling elements and mating coupling elements arranged on the flange and a clamping sleeve end facing the flange interlock in the installed state, preventing rotation between the clamping sleeve and clamping element.

Abstract: A quick coupling nut includes a body having a bore therethrough and adjacent side holes. A pair of threaded members are disposed in the bore and moveable in a radial direction of the bore and a cap having a bore therethrough, coaxial with the body bore, includes depending guides which are received by the guide holes for enabling axial movement between the cap and the body. Actuators depending from the cap engage the threaded members in order to urge the threaded members radially inward to engage a threaded bolt shank, extending through the cap and body bores, as the cap is moved axially toward the body. This threaded engagements enables tightening of the quick coupling cap by rotation about the threaded bolt shank.

Abstract: Connection arrangement for detachably connecting a first component to a second component. The arrangement includes a retaining bolt adapted to extend through the first component. The retaining bolt includes an external thread. A connector device is adapted to receive the retaining bolt. The connector device includes at least two shell-shaped threaded-nut segments and a housing which includes an opening adapted to receive an end of the retaining bolt and an internal taper which tapers towards the opening. Each of the at least two shell-shaped threaded-nut segments are arranged in the housing and include an outer tapered surface which movably engages the inner tapered surface of the housing. A mechanism for biasing the at least two shell-shaped threaded-nut segments towards the opening of the housing is utilized. A vibration-damping member is provided. The connector device is mounted to the vibration damping member.

Abstract: A plastic fastening element is configured to be fastened on a threaded bolt welded to a support member. The fastening element includes a first hollow element portion made of plastic material and having an axial through hole. The through hole has a polygonal cross section and radially resilient wall portions that will be radially outwardly deformed if the first element portion is pushed onto the threaded bolt. The fastening element also includes a second hollow annular element portion which is connected to one end of the first element portion by a breakable connecting portion. The second element portion has an inner cross section dimensioned such that the second element portion can be pushed over the first element portion under radial deformation of the resilient wall portions, whereby a thread of the threaded bolt is partially formed into the resilient wall portions of the first element portion.

Abstract: A quick insertion fastener has an internally threaded first member (“nut”) adapted to be quickly attached and tightened on an externally threaded second member (“bolt”). The nut is formed with a casing with an internal frusto-conical front surface, a plurality of threaded shell segments contained in the casing having external frusto-conical front surfaces which abut the front surface of the casing, a spring member positioned at a rear part of the casing which elastically holds the rear ends of the shell assembly together, and an end retainer provided at the rear part of the casing having a taper for engaging the rear ends of the shell assembly and displacing them radially apart when the shell assembly is displaced axially toward the end retainer by insertion of the bolt. This allows the bolt threads to move without interference past the internal threads of the shell segments.

Abstract: An internally threaded, segmented nut and conical bore for a pressure vessel are used to make removal of studs securing covers over openings through the pressure vessel wall. The segmented nut has a conical upper surface to mate with a corresponding surface of the conical bore when the stud is threaded through the internal thread of the nut and a load is applied. The segmented nut is easily replaced and the stud is easily removable due to the shape of the nut and bore. The segmented nut eliminates drilling and rethreading the bore to repair damaged threads.

Abstract: A nut assembly (10) for engaging an externally threaded bolt (12). Nut assembly (10) includes a cylindrical casing (16) and a nut (20) secured to cylindrical casing (16) projects a substantial distance from cylindrical casing (16) to permit rotation of nut assembly (10) by a suitable conventional wrench. Three internally threaded arcuate segments (28) are mounted within cylindrical casing (16) to engage external screw threads (14) on bolt (12). Detents (40) are formed integrally with cylindrical body (16) and project radially inwardly of the inner peripheral surface (24) of cylindrical casing (16). Detents (40) fit in grooves (41) in segments (28) to connect segments (28) for rotation with cylindrical body (16) and cap (20).

Abstract: A threaded fastener for use with bolt comprises a housing having a central bore that includes a bolt insertion aperture and a plurality of cylindrical and frustoconical steps. A plurality of insert segments are placed within the central bore. Each insert segment includes an inwardly facing threaded portion and a front projection extending outwardly from the threaded portion. The front projection has a beveled edge arranged for sliding contact with a corresponding beveled portion of the housing. The front projection also has outwardly extending portion that cooperates with a ledge in the housing bore to limit longitudinal movement of the insert segment in the housing. A rear projection extends inwardly from the threaded portion and is arranged for sliding contact with a second beveled surface of the housing. An end cap retains the insert segments in the housing.

Abstract: A separable threaded fastener tightened to hold two objects together with an axial preload on the fastener. Fastener structure minimizes mechanical shock loads on contiguous structures when elements of the fastener are abruptly separated from one another to release the objects. A stator and a rotor having ramp surfaces provide for relief of the axial preload at the time of separation thereby reducing mechanical shock on contiguous structures.

Abstract: A tendon 10 is installed in a hole 34 in a mine hanging wall 36 by making use of a barrel 14 and a wedge arrangement 16. One end of the tendon is anchored in the hole 34 such that the other end protrudes therefrom. The barrel 14 is positioned over the protruding end of the tendon 10. A tensioning jack applies a tensile load to the tendon 10 and an oppositely disposed load to a shear ring 20 of the barrel. When the desired preload is reached the shear ring 20 fails permitting the tensioning jack 40 to displace wedge elements 30 of the wedge arrangement 16 inwardly thereby locking the barrel on the tendon and maintaining the desired preload in the tendon.

Abstract: A spare-tire fastening structure is for fastening a spare-tire 1 to a support member (bracket 2) in a spare-tire receiving section. The fastening structure comprises a nut member 5 and a bolt member 9.

Abstract: A locking apparatus includes an inner ring having a tapered outer shape and permitting a bolt of a fastener, with which construction elements are fastened, to pass therethrough, an outer plate formed with a tapered bore which receives the inner ring, a coil spring which urges the inner ring toward the outer plate, and a nut threadedly engaged with the bolt on the side close to an outer end of the coil spring. When an external force is applied to a construction so that the outer plate is displaced toward the nut, together with the construction element associated therewith, the outer plate applies a force, exerting in the direction axially of the bolt, to the inner ring. When receiving the force which has a component directed radially inwardly of the bolt, the inner ring is reduced in diameter to tighten the bolt, thereby preventing a further displacement of the outer plate and the construction element.

Abstract: A spreading anchor including a sleeve (2) having an expansion region (3) provided with longitudinal slots (4), and an axial bore (5) having a conical shape in the expansion region (3) conically tapering toward a rear, with respect to a setting direction (5) end (6) of the sleeve (2), and a spreading member (8) having a conical profile at least along a portion of its longitudinal extent and displaceable in the axial bore (5) upon radial expansion of the sleeve expansion region (3), the spreading member (8) having a cylindrical through-bore (9) and being formed of tensioning segments (11-14) which extend in an axial direction and are held together with a possibility of a radial resilient expansion.

Abstract: A measuring device is provided, having a cylindrical connection piece (1), having a collar (2) which engages around at least one section of the connection piece (1) and is to be fastened at a measuring location, having a restraining means, by which the connection piece (1) is fastened in the collar (2), having an annular seal (3), which is arranged in the collar (2) and bears in a sealing manner against the connection piece (1), and having a thrust ring (4) which is releasably fastened in the collar (2), and, in an end position, puts the seal (3) under pressure in the axial direction, with which device mounting and demounting at the measuring location take place in one operation and with which device, during mounting, the fastening of the connection piece (1) takes place before or at the same time as the restraining of the seal (3), and with which device, during demounting, first of all the seal (3) is released and then the fastening.

Abstract: An improved axial-on threaded coupling device is provided for push-on mounting to a substantially seated position on a male threaded member. The device includes a plurality of threaded coupling segments collectively forming a female threaded bore within a housing and configured for radial expansion to accommodate push-on mounting onto a male threaded member. When the device is rotated in a tightening direction, the segments are retained in threaded engagement with the male threaded member by the inner wall surfaces of the housing. When the device is rotated in an opposite direction, the fastener segments are free to expand radially outward to accommodate pull-off removal of the device from the male threaded member.

Abstract: A nut for slidable application to a bolt has a nut body with a first end, a second end, and a through hole. The nut body has an outer wall formed in the and an inner wall defining the through hole including at least a portion thereof being an inclined wall hole having a diameter decreasing from a first diameter to a second diameter proximate the second end. A stop flange extends radially inward into the through hole at the first end of the nut body and defines a bolt exit aperture. Three guideposts are formed coaxially on the inner wall of the inclined wall hole. Three nut segments have inclined outer surfaces complementing an inclination angle of the inner wall of the inclined wall hole and inner surfaces with threads. The three nut segments are movably disposed between the guideposts so as to permit sliding movement in an axial direction and radial displacement urged by sliding engagement of the inclined outer surfaces with the inner wall of the inclined wall hole.

Abstract: A nut device which comprises a hollow body structure having a side wall, end walls, and a tapered bore, the body structure defining a longitudinal axis; a sleeve extending in the body substantially coaxially therewith, the sleeve having a longitudinally extending split, and a side taper engaging the body structure tapered bore, the sleeve having a bore thread; an anchor pin extending longitudinally endwise in the split and anchored to at least one of the body structure end walls, for blocking rotation of the sleeve, while allowing sleeve longitudinal movement relative to the pin and body structure; at least one of the body structure end walls having a bore in alignment with the sleeve bore threading; whereby the nut device may be rotatably connected to a longitudinally extending member having threading engaging the sleeve threading, and locked to the member by squeezing the sleeve, in response to sliding engagement of the sleeve side taper with the body tapered bore.

Abstract: A locking apparatus includes an inner ring having a tapered outer shape and permitting a bolt of a fastener, with which construction elements are fastened, to pass therethrough, an outer plate formed with a tapered bore which receives the inner ring, a coil spring which urges the inner ring toward the outer plate, and a nut threadedly engaged with the bolt on the side close to an outer end of the coil spring. When an external force is applied to a construction so that the outer plate is displaced toward the nut, together with the construction element associated therewith, the outer plate applies a force, exerting in the direction axially of the bolt, to the inner ring. When receiving the force which has a component directed radially inwardly of the bolt, the inner ring is reduced in diameter to tighten the bolt, thereby preventing a further displacement of the outer plate and the construction element.

Abstract: To provide a press nut being capable of easily attaching and detaching the nut to and from a bolt by linearly pressing the nut along the bolt and by linearly drawing the nut along the bolt a press nut 1 has a nut body 2 of plastic, tubular cap 3 of plastic to receive the nut body thereinto to connect the nut body thereto, and a cover 6 to axially move the nut body in relative to the cap. The nut body 2 comprises a base 13, two threaded portions 15 having threaded inner walls to form a nut as a whole, and spring portions 14 to force the respective threaded portions to press them up from the base. The nut body is housed in the cap in the manner that the threaded portions are adjacent to a flange 10 of the cap 3 and the base is adjacent to an opening of the cap.

Abstract: An anti-backlash nut designed to translate along a lead screw in two longitudinal directions is disclosed. The nut has one or more longitudinal flexure members each having one end fixed to the nut and the other one free floating. Internal threads are formed at the free floating ends of the flexure members complementary to the threads of the screw. Incline ramps are located on the exterior of the free floating ends. A flexible compression member in the form of an O-ring surrounds the ramps for continuously urging the threads at the free floating end into forceful engagement with the threads of the screw. There is an adjustable sleeve for urging the O-ring against the ramps with variable force to increase and decrease the force with which the threads of the flexure members engage the threads of the screw.

Abstract: A press-nut is adapted to engage with the threads of a bolt by pressing the nut onto the bolt to receive the bolt in an insertion hole thereof. The press-nut comprises a plastic nut body, and a plastic tubular cap member adapted to be coupled to the nut body to contain the nut body therein and to provide the press-nut with its external appearance. The cap member has a wide opening at one end so as to receive and contain the nut body and a small hole at the other end, through which the bolt is inserted. The nut body comprises a base portion, at least two screw portions forming a nut as a whole and having threaded grooves on the inner walls thereof, and spring portions extending from the base portion and connected to the respective screw portions with each spring portion resiliently biasing the corresponding screw portion so as to be pressed upward from the base portion.

Abstract: A threaded fastener including a nut and a bolt with the nut including a ring section and a nut section with the nut section having a main body portion and a neck portion with the neck portion adapted to be moved into the ring section and to be moved radially inwardly such that the threads in the neck portion are moved into compressive engagement with the engaged threads of the bolt to provide prevailing torque structure resisting loosening of the nut member from the bolt.

Abstract: A reaction nut for location on a threaded bolt, particularly a bolt to be nsioned by a hydraulic tensioning device, includes a plurality of internally-threaded segments (22) movable between an outer-most inoperative position radially spaced from the bolt (2) and an operative position making threaded engagement with the bolt (2). The segments (22) have tapering surfaces thereon. A primary ring member (16) is movable axially relative to the segments (22) and has a corresponding tapering surface (18) thereon. A first resilient device (20) biases the tapering surface (18) of the primary ring member (16) into engagement with the tapering surfaces on the segments (22). A cam then (26) moves the primary ring member (16) from a rest position to an axially displaced position against the bias of the first resilient device (20) whereby the segments (22) are moved by an associated second resilient device (24) between their operative and inoperative positions.

Abstract: A coupling device including a first member provided with external threads and a second member having an opening therein into which the first member is inserted. The second member is provided with a plurality of movably mounted internally threaded elements for receiving the external threads of the first member. A structure is provided whereby the first member may be inserted within the second member by rectilinear sliding movement, afterwhich the first member is rotated into tight engagement with the second member. Release of the first member is accomplished by rotating the first member very slightly in the opposite direction, afterwhich simple manual manipulation of the second member withdraws the threaded elements from engagement permitting the first member to be slidably removed from the second member.

Abstract: A connecting clip for a toilet seat, including a nut and an operating member mounted thereon. The nut includes a plurality of semicylinders that are connected to each other, and which have inner peripheral surfaces that together define a female screw portion, whereby the nut can be screwed onto a bolt. The nut further includes engaging members provided at one longitudinal end thereof to connect the plurality of semicylinders together, the opposite longitudinal end including a connecting portion, such as a hinge member. The operating member engages the nut and is movable between first and second positions, wherein in the first position the semicylinders are compressed such that the nut is adapted to threadingly engage the bolt on which it is to be mounted. In the second position of the operating member, the semicylinders are allowed to spread apart from one another such that the nut no longer threadingly engages the bolt. In this position, the nut may be moved axially along the bolt.

Abstract: A coupling device including first and second members, threaded elements mounted within one of the elements to move between open and closed position, adjacent portions of the threaded elements being provided with sloping surfaces and pin assemblies associated with the threaded elements and positioned between the sloping surfaces such that as a manually operable device is operated the threaded elements are moved longitudinally into engagement with the pin assemblies wedging the pin assemblies against the sloping surface expanding the threaded elements. There are also disclosed balls associated with the threaded elements positioned within openings within the coupling device and being moved when the threaded elements assume their open position into locking relationship.

Abstract: A coupling device including a first member provided with external threads and a second member having an opening therein into which the first member is inserted. The second member is provided with a plurality of movably mounted internally threaded elements for receiving the external threads of the first member. A structure is provided whereby the first member may be inserted within the second member by rectilinear sliding movement, afterwhich the first member is rotated into tight engagement with the second member. Release of the first member is accomplished by rotating the first member very slightly in the opposite direction, afterwhich simple manual manipulation of the second member withdraws the threaded elements from engagement permitting the first member to be slidably removed from the second member.

Abstract: A clamp nut 10 comprising a split threaded nut 12 for engaging a threaded spindle (not shown), a coiled spring 16 encircling the split nut 12, means 20 for holding the spring 16 tightly coiled around the split nut 12 and a cap 30, engaging the spring 16, which can be turned in a first direction (A) to tighten the spring 16 around the split nut 12 and in a reverse direction to release the holding means 20 thereby loosening the spring 16 around the split nut 12 and enabling the split nut 12 to expand radially to facilitate removal of the clamp nut 10 from a threaded spindle. The mechanism for releasing the holding means 20 preferably includes a cam surface 32, formed integrally with the cap 30, which lifts an end 19 of the coiled spring 16 off a set of ratchet teeth.

Abstract: A coupling device including a first member provided with external threads and a second member having an opening therein into which the first member is inserted. The second member is provided with a plurality of movably mounted internally threaded elements for receiving the external threads of the first member. A structure is provided whereby the first member may be inserted within the second member by rectilinear sliding movement, afterwhich the first member is rotated into tight engagement with the second member. Release of the first member is accomplished by rotating the first member very slightly in the opposite direction, afterwhich simple manual manipulation of the second member withdraws the threaded elements from engagement permitting the first member to be slidably removed from the second member.

Abstract: A marine fastener is disclosed using a base plate, a retainer nut, the Jaw button, and a spring made of thermoplastic, with the inner back opening of the spring cooperating with a ridge on the outer opening of the jaw button in order to selectively bias the jaw button in respect to the base plate.

Abstract: The present invention is a separation nut for fastening and releasing a threaded bolt under remote or manual controls. The preferred embodiment of the present invention separation nut includes a housing, a base, a ramp which is fitted into the base, and a three-piece segmented threaded nut placed on top of the ramp and enclosed by a three-piece segmented spool, which is in turn bounded by a restraining wire. The three-piece segmented threaded nut and the three-piece segmented spool are held in place by a spring biased plunger. Anti-rotation pins are employed for preventing rotation of the segmented nut. A release pin is provided for inhibiting the restraining wire from releasing the segmented spool. The release pin is connected to a flexible shaft.

Abstract: A piston rod, having a threaded end, is threadedly received in a split collar which is (a) internally threaded and (b) externally tapered. The collar is received in a tapered bore formed in a cross-head. The crosshead has a plurality of threaded holes formed therein to receive studs which penetrate a pressure plate. Nuts secured to ends of the studs draw the plate against the collar to cause its threads to fully engage the threads of the rod end, and secure the collar in place. The rod, of course, can be turned in the collar, threadedly to adjust its axial positioning in the collar.

Abstract: A quick-fastening nut for location on an associated bolt comprises a plurality of internally-threaded, arcuate segments each including a part frusto-conical portion, and guide means reacting between the segments whereby the segments can be moved radially towards and away from one another between inoperative positions displaced outwardly of concentricity and operative positions substantially concentric with one another and whereby a frusto-conical surface is presented by the portions. The nut further comprises releasable means for retaining the segments in their operative positions, the arrangement being such that, in use, the frusto-conical surface defined by the portions engages a correspondingly-shaped mating surface of a component, such as the piston of a hydraulic bolt tensioner or a washer, bounding the bolt, relative axial movement between the nut and the component urging the segments radially inwardly into positive threaded engagement with the bolt.