A connection device, in particular a screw connection device, including: an energy supply device; a communication device, and a sensor system, wherein the energy supply device is configured to supply the sensor system and/or the communication device with energy, wherein the communication device is configured to transfer a sensor value with the aid of the sensor system to the outside.

There is disclosed an anchor assembly for coupling a tether to a structure such as a rock wall (14) in a fitted condition with a fastening arrangement having a fastener. The anchor assembly includes an anchor body having a first portion located toward a first end adapted to couple with the tether and a second portion located toward a second end. The second portion is adapted to receive the fastener in the fitted condition. The anchor assembly also includes an indicator arranged to be engagable in the fitted condition between the fastening arrangement and the anchor body. The indicator includes a body portion and a deformable portion extending from the body portion, the deformable portion being adapted to be moveable relative to the body portion between an initial non-deformed condition and a deformed condition in response to loading of the fastening arrangement.

A wheel nut or axle nut for vehicles, having a body, having a central threaded hole, having a peripheral wall, and having an abutment face at a lower side The nut also has a plurality of wrench faces on the peripheral wall of the nut body for tightening or releasing the nut by a tool which cooperates with the wrench faces. In the body at least one recess is provided in which a sensor element is arranged The sensor element is connected to a wireless interface which is configured to transmit a sensor signal of the sensor element wirelessly to an external reception unit.

A system for remotely retrieving sensed conditions at one or more building components. The building components are remote or numerous so that a wireless collection of the sensed conditions provides a significant benefit to a builder or building operator. A remote transceiver sends a wireless signal to a building component. The building component includes an onboard transceiver. At least some of the energy from the transmitted wireless signal is received by the onboard transceiver, sent to a storage device, and stored therein. The stored energy is used to operate a sensor for sensing an onboard condition. The onboard condition is then wirelessly transmitted by the onboard transceiver back to the remote transceiver to be displayed.

A fitting assembly includes an indicator assembly that provides a visual indication of torque value to verify when the desired operational torque value is achieved. The fitting assembly includes a nut, and a visual indicator assembly positioned on the nut which has a plurality of visual indicators that provide a visual indication of a torque level being applied. A sleeve is attached to the nut and includes a window through which a portion of the visual indicators is visible based on the torque level being applied. A resilient member couples the sleeve to the nut. As the nut is rotated to apply torque to the nut, the resilient member biases the sleeve in a fixed position and the nut rotates relative to the sleeve, whereby the visual indicator assembly rotates relative to the sleeve to alter which portion of the visual indicator assembly is visible through the window to provide a visual indication of when the operational torque level is being applied. The fitting assembly includes a positive locking feature that interacts with a serrated portion of a nipple fluid connection to positively lock a position of the nut to prevent nut loosening.

A clamping force monitoring device is provided having a step washer, a contact plate, a compression washer separating the step washer and the contact plate, a threaded fastener extending through the step washer and the compression washer, a nut and an electric circuit, wherein when a sufficient axial force is exerted in the threaded fastener by engagement of the nut, the compression washer is compressed and the step washer is in contact with the contact plate, thereby closing the electric circuit. A method for monitoring a threaded fastener is provided including extending a threaded fastener through a step washer and a compression washer and engaging the threaded fastener with a nut, wherein when a sufficient axial force is applied to the threaded fastener by the nut, the compression washer is compressed and the step washer contacts a contact plate, thereby closing an electric circuit.

Flanges of half bodies provided in a compressor casing are fastened by multiple bolts and a multi-hole washer shared by two or more adjacent bolts. When F is fastening force, T is a thickness of the washer, is a distribution angle of the fastening force, Rb is a radius of the bolt, R is a radius of a distribution range of the fastening force on a bearing surface, A is an area of the distribution range on the surface, a is an area of a distribution range of the fastening force on a mating surface of the flange, and R=Rb+T.Math.tan and A=R2 are established, F/A is lower than yield strength of each of a flange material and a multi-hole washer material, and F/a is equal to or higher than predetermined surface pressure determined based on pressure of fluid inside the casing.

A screw assembly includes a longitudinal component (10) having two opposite ends and a threaded part (12; 42; 66) so that it can be connected by screwing to one of two elements (34). An elastically deformable member (18, 20; 48; 82) is adapted to be borne, in the axially compressed state, between one or other of the two opposite ends of the longitudinal component (10) and the other of the two elements. The assembly has a retaining device (30; 54; 84) so as to be able to keep the elastically deformable member (18, 20; 48; 82) in compression and so as to be able to release the elastically deformable member in the compressed state between the other of the two elements (32) and the one or the other of the two opposite ends.

A system for remotely retrieving sensed conditions at one or more building components. The building components are remote or numerous so that a wireless collection of the sensed conditions provides a significant benefit to a builder or building operator. A remote transceiver sends a wireless signal to a building component. The building component includes an onboard transceiver. At least some of the energy from the transmitted wireless signal is received by the onboard transceiver, sent to a storage device, and stored therein. The stored energy is used to operate a sensor for sensing an onboard condition. The onboard condition is then wirelessly transmitted by the onboard transceiver back to the remote transceiver to be displayed.

A fastener drive and release system is used with a rotational driver to drive a fastener having a washer into a workpiece. The system includes a body, a drive assembly, a tool head and a release tip. The drive assembly includes a rotating drive portion with a first engaging member and a driven portion having a second engaging member. The driven portion reciprocates between an engaged position in which the first and second engaging members engage one another and a disengaged position. The driven portion includes a drive head to engage the fastener. The tool head is disposed at an end of the body, through which the drive head extends. The release tip is disposed on the tool head and has resilient fastener head receiving and force absorbing portions. The fastener is driven into the workpiece by rotational movement imparted to the driven portion. When the fastener is driven into the workpiece the force absorbing portion compresses and the driven portion disengages from the drive portion to stop rotation of the fastener.