262results about "Load modified fasteners" patented technology

A torque control fastener system having a fastener nut, a helical wire insert, and a shaft, where the nut and helical wire insert have unique hardness and coefficient of thermal expansion relationships that produce improved performance.

There is provided a sensor unit for a fastener assembly, the sensor unit comprising a mounting arranged to rigidly attach the sensor unit to, or adjacent to, a fastener assembly; and a sensor, that is an optical flow sensor or an inductive sensor, configured to sense movement of the fastener assembly. The sensor unit may comprise a processor arranged to process the output of the sensor to detect loosening of the fastener assembly and to output a signal representing the status of the fastener assembly. The sensor unit may comprise a wireless communication unit arranged to communicate the signal.

Provided is a housing comprising, a plastic assembly comprising a plastic “B” cover having one or more snap on plastic hooks protruding therefrom and one or more grooves cut therein, a display panel sandwiched into the plastic assembly behind the plastic “B” cover, in front of an electromagnetic interference shielding (EMI) material, and a plastic “A” cover having one or more grooves cut therein, the plastic assembly held together by one or more clips sliding along each side of the plastic assembly, and within the one or more grooves of the plastic “B” cover and one or more snap on plastic hooks and the one or more grooves of the plastic “A” cover, the EMI material has one or more press-on grommets which are pressed onto one or more plastic buttons protruding from a surface of the plastic “A” cover to secure the EMI material to the plastic “A” cover.

A torque control fastener system having a fastener nut, a helical wire insert, and a shaft, where the nut and helical wire insert have unique hardness and coefficient of thermal expansion relationships that produce improved performance.

The attraction system includes a first component, a second component, a fixture configured to couple the first component to the second component, a radio frequency identification (RFID) tag including a torque stripe extending between the fixture and a reference point on the attraction system, and the RFID tag configured to emit a radio frequency (RF) signal when the torque stripe is intact, and an RFID reader configured to detect the RF signal.

Instrumented nut, clamping sleeve, clamping device and method for tightening such a nut. The invention relates to an instrumented metal nut (10b) comprising a tubular body having a polygonal drive surface (14). The nut comprises, on at least one annular portion (34) of its outer surface: an electrically insulating layer (36) applied to the annular portion; a piezoresistive conductive polymer (38) whose ohmic resistance varies according to a stress exerted during tightening of the nut on a threaded fastener, said conductive polymer being applied to the electrically insulating layer; and at least two electrodes (40). Figure for the abstract: Figure 2

The utility model discloses a large-span torsional shear type bolt assembly which comprises a torsional shear bolt, one end of the torsional shear bolt is movably connected with a wabbler, the side wall of the torsional shear bolt is movably connected with a gasket, one side of the gasket is fixedly connected with a preservative storage bag, and the torsional shear bolt is in threaded connection with a torsional shear nut. And one side of the torsional shear nut is fixedly connected with a crushing rod, and one side of the torsional shear nut is movably connected with one side of a preservative storage bag. The utility model relates to the technical field of torsional shear type bolts. Through cooperation of a torsional shear bolt, a gasket, a magnet ring, a sealing steel ring, a preservative storage bag, a torsional shear nut and a crushing rod, the space between the gasket and the torsional shear nut can be automatically coated with a rust remover when equipment is installed and fixed through the torsional shear bolt, workers do not need to manually coat the equipment with the rust remover, and the labor intensity of the workers is reduced; and meanwhile, the rust remover can be limited, the rust remover is prevented from splashing all around, and rainwater can be prevented from being directly poured on the side wall of the twist arrow nut.

The present application belongs to the technical field of wind power equipment connecting structure, and particularly relates to a threaded connection assembly, a blade device and a wind power equipment. The threaded connection assembly comprises: an inner threaded connecting piece; and an outer threaded connecting piece, a radially outer side surface of the outer threaded connecting piece is provided with an outer thread, the outer thread is threadedly matched with the inner thread, in the axial tensile stress direction of the outer threaded connecting piece, the outer thread and the inner thread form a plurality of threaded areas, and an axial gap exists between the front side surface of the outer thread of the outer thread and the rear side surface of the inner thread of the inner thread adjacent to the front. Wherein, in the axial tensile stress direction, the axial gap in the threaded area in the front is greater than the axial gap in the threaded area in the rear. Through the technical scheme of the present application, different axial gaps are arranged between the threads in different threaded areas, so as to change the stress distribution according to the axial tensile stress change, so that the overall stress distribution is more uniform, which is beneficial to prolong the service life and reduce the maintenance cost.

Adjustment device (1) for adjusting a light module in a lighting device, comprising an adjustment means (10) into which a rotary movement can be introduced, and a transmission element (11) by means of which the rotary movement can be transmitted, and wherein the adjustment means (10) and the transmission element (11) are connected by means of a coupling (12) for torque overload protection, wherein the adjustment means (10) is formed in at least two parts and has a first part (10a) into which the rotary movement can be introduced and a second part (10b) which is formed as part of the coupling (12), wherein the coupling (12) has a metallic spring element (13) which is formed by means of the second part (10b) of the adjustment means (10) and which comprises several spring arms (14) which at least partially enclose on the outside a detent section (16) of the transmission element (11) formed with detent cams (15),characterized in that the spring arms (14) have detent projections (21) pointing towards the detent cams (15), which are in contact with the detent cams (15).

A fastener 100 includes a sleeve 102, a pin 106, and a visual indicator 112. The sleeve 102 includes a tubular body 104. The pin 106 includes a shank 108. At least a portion of the shank of the pin is configured to extend through the tubular body of the sleeve and to facilitate deformation of a portion of the tubular body into a bulb 110 in response to a force applied to the tubular body of the sleeve by the shank of the pin. The visual indicator is configured to provide a visual verification of correct formation of the bulb.

To provide a doubling plate for frictional joining capable of enabling fastening from one direction by a torque shear wrench and dispensing with a nut.SOLUTION: A doubling plate 11 is used in frictional joining with a bolt while being superposed on a member to be joined 10, by using a bolt which has a shape with a torque shear stud-type fracture groove and a pin tail, and on which a male screw 21 of left-hand thread is formed on one of half parts of the bolt, a male screw 23 of right-hand thread is formed on the pin tail-side half part, and a nut 22 is engaged with the male screw 23 of right-hand thread, as a stud bolt. The doubling plate is disposed below the member to be joined 10, enables fastening from one side by being provided with a female screw 11A of left-hand thread to be engaged with the male screw 21 of left-hand thread of the bolt, and provides a function as a nut of large width across flat.SELECTED DRAWING: Figure 1

A service tube assembly (30) comprises a service tube (32) having a threaded end portion (32b) and a ratchet hub (H) spaced from the threaded end portion (32b). The threaded end portion (32b) of the service tube (32) is threadably engaged with a mating part (34). The assembly further comprises a locking member (36) having a cantilever (36c) extending from a fixed end (36c') held relative to the mating part (34) to a free end (36c"). A ratchet pawl (P) is provided at the free end (36c") for engagement with the ratchet hub (H) on the service tube (32).

The invention relates to a device (10) for monitoring the tightening of a fastener (12), said device comprising: a rod (14), comprising a first (22) and a second (26) opposite flat faces; an assembly member (16), capable of being assembled to the rod; and a probe (18) comprising: - a probe body (50), comprising a front face (56), capable of coming into contact with the bottom (26) of the axial imprint of the rod; and - a transducer (52, 80), integral with the probe body, said transducer being capable of sending and / or receiving ultrasonic waves. The rod comprises a first blocking element (29); and the probe comprises a second blocking element (62), capable of cooperating with said first blocking element.

Kit (10) for providing a one-way torque nut (10') for a bolted connection, wherein the torque nut (10') is formed by - a screw part (12) having a threaded section (14), and - a drive part (16, 16') that can be coupled to the screw part (12) to transmit torque, wherein the drive part (16, 16') has an attachment area (22) for a torque-applying tool, wherein the screw part (12) and the drive part (16, 16') each have a configuration (K1, K2, K2') of positive locking elements (26, 28, 28') which are configured to form a positive locking element pairing in the coupled state of screw part (12) and drive part (16, 16') and to transmit the torque applied to the nut (10'), and wherein the kit comprises several screw parts (12) with relatively different configurations (K1) of positive locking elements (26), and / or several drive parts (16, 16') with relatively different configurations (K2, K2') of positive locking elements (28, 28'), wherein the positive locking element pairings that can be formed from the configurations (K1, K2, K2') differ in how much torque can be transmitted until the positive locking element pairing fails.

The cylindrical shaft (110) of a bolt (101) is provided with a central bore (113), extending axially from the head (130) of the bolt (101 ) over at least a part of the axial length of the bolt (101). The bolt is provided with a measuring pin (120) located inside the bore (113) and extending substantially parallel to the shaft (110). The measuring pin (120) has an anchor end (122) fixated with respect to the shaft and has an opposite free indicator end (121 ). The bolt is further provided with a sensor element (140, 141 ) comprising a magnet (141 ) attached to the free indicator end (121 ) of the measuring pin (120) and a magnetic sensor (140) fixated with respect to the shaft (110) and aligned with the first sensor component (141 ).

A rescue hoist including a cable drum assembly (110) generally including a cable drum (102) having a cable groove (104) and a recess (114) positioned at one end of the cable groove, a shear pin (118) extending transverse across the recess, and a cable assembly (110) including a cable (108) routed along the cable groove and a cable hook (116) mounted to one end of the cable. In use, to secure the cable assembly to the cable drum, the cable hook is received in the recess and hooked around the shear pin according to a predefined installation sequence. In use, to provide a cable release provision, the shear pin includes spaced reduced diameter sections (126a, 126b) positioned on opposing lateral sides of the cable hook configured to shear in response to a load on the cable exceeding a predefined threshold load value.

A turboshaft engine transmission with a torque measurement system is provided. The turboshaft engine transmission includes a front housing, a rear housing, a mating flange axially interposed between the front and rear housings, the mating flange defining a sensing bolt hole, assembly bolts disposed to assemble the front and rear housings to the mating flange with a preload sufficient to maintain assembly during engine operational conditions and a sensing bolt installed in the sensing bolt hole to measure forces exerted on the mating flange by the front and rear housings.

Tension control system for a fastener in an assembly and associated control method. The present invention relates to a tension control system (10) for a fastener (12) in an assembly (36), said fastener (12) comprising a rod (14) and an assembly member (16), the control system (10) comprising: - a first measuring device (44), the first measuring device (44) being adapted to measure a first parameter representative of the time response of the rod (14) to an ultrasonic excitation, - a second measuring device (46) adapted to measure a second parameter representative of the frequency response of the rod (14) to an ultrasonic excitation, and - a calculator (48), the calculator (48) being adapted to determine a value for the tension of the rod (14) as a function of at least said first parameter and said second parameter. Figure for the abstract: Figure 1

Provided is a nut which extends the fatigue life of a bolt in bolt-nut fastening and which is easy to produce. A nut (1) includes a nut body (2) with a flange part (5) and a shallow depression (7) with a depth of less than 1.5 pitches on the axial side of a bearing surface (5s), which is a flat surface extending perpendicular to an axis on the fastening side of the nut body (2). This nut (1) preferably has an additional rigidity part (6) on the release side.

A plurality of raised surfaces on the platform absorb the torque of fasteners that contact the surface while rotating relative to the platform. A significant disproportionate increase in torque compared to the associated increase in bolt stress is observed by the increase in torque felt when tightening the fastener. Raised surfaces are used on the knobs of mechanical pipe couplings to increase the fastener's resistance to damage when a power tool is used to apply torque to the fastener.

Tension control system for a fastener in an assembly and associated control method. The present invention relates to a tension control system (10) for a fastener (12) in an assembly (36), said fastener (12) comprising a rod (14) and an assembly member (16), the control system (10) comprising: - a first measuring device (44), the first measuring device (44) being adapted to measure a first parameter representative of the time response of the rod (14) to an ultrasonic excitation, - a second measuring device (46) adapted to measure a second parameter representative of the frequency response of the rod (14) to an ultrasonic excitation, and - a calculator (48), the calculator (48) being adapted to determine a value of the tension of the rod (14) as a function of at least said first parameter and said second parameter. Figure for the abstract: Figure 1

A load sensing assembly for a spinal implant includes a set screw having a central opening that extends from a first end of the set screw toward a second end of the set screw. The second end of the set screw is configured to engage with an anchoring member. The load sensing assembly includes an antenna, an integrated circuit in communication with the antenna, where the integrated circuit is positioned within the central opening of the set screw, and a strain gauge in connection with the integrated circuit. The strain gauge is located within the central opening of the set screw in proximity to the second end of the set screw.

A torque limiting apparatus for a rotational mechanical fastener includes a driver head configured with a spring recess, a planar wave-spring positioned within the spring recess, a torque drive section with female ramps and a floating incline plane element configured with male ramps that match the female ramps. The planar wave-spring has ridges extending upward in a longitudinal direction which are positioned in contact with the floating incline plane element. As the torque limiting apparatus is tightened the planar wave-spring becomes compressed, and the male ramps begin to slip upward on the female ramps. Upon reaching a torque limit threshold force the male and female ramps become unmated, allowing the rotational mechanical fastener to rotate freely.

This invention relates to a new machine component that allows the tightening level to be observed by the person tightening the component through a color change, linked to the increasing torque level during assembly. With our invention, technical problems related to assembly difficulties and extended duration experienced during the production phase are solved. Technical problems that may occur during the period between the assembly process of the machine element and its use are solved. Most importantly, it is easily controlled whether the machine element is tightened at a level appropriate for the tightening calibration in every field condition. As well as being controlled by the person tightening the machine element, it functions without losing its function in the subsequent checks.

A screw assembly with built-in torque limiting functionality has a shaft having a threaded lower section and a cap mounted on the shaft. The shaft includes a plurality of fingers that extend into the cap and that are pushed outward against the interior surface of the cap by a wedge pin to frictionally engage against the cap. When a tightening torque is applied to the cap, the torque is transmitted to the shaft until the static frictional force of the finger / cap interface is overcome, then the cap moves relative to the shaft, thereby limiting the tightening torque experienced by the threaded lower section. Optionally, a one-way rotation control mechanism is included that allows the screw assembly to be loosened with confidence.

The invention relates to a screw-locking washer for arrangement between a screw head of a screw and a flat support surface having an elongated hole through which the screw is guided, the screw-locking washer comprising a washer top side (2) and a washer bottom side (3) facing the support surface, wherein the washer body (1) is convex, characterised in that the washer top side (2) of the washer body (1) is provided at its outer periphery with a circumferential rib (5).