A fastening device for fastening a bolt to a fastening target object, wherein the bolt has a bolt head female screw section in an inner circumferential surface of a recess provided in an upper surface of a bolt head section. The fastening device includes a tension rod having a rod male screw section engaging the bolt head female screw section; a drive socket circumferentially surrounding the tension rod and having a lower end section with a grasper for laterally grasping the bolt head section; a supporter circumferentially surrounding the drive socket and having a lower end section protruding downward beyond a lower end section of the drive socket; a sensor for sensing compression force acting on the supporter in the upward/downward direction; a first motor for rotating the tension rod around an axis extending in the upward/downward direction; and a second motor for rotating the drive socket around the axis.

An insert nut includes a cylindrical portion into which a bolt is removably insertable. An inner periphery of the cylindrical portion includes a first region, a second region and a third region which are provided in the order named from an upstream side to a downstream side with respect to an insertion direction of the bolt at an inner periphery thereof. The first region and the third region include a female screw portion threadably engageable with the bolt. The second region has a minimum inner diameter larger than D1+2×h1×0.3, where D1 is an inner diameter of the female screw portion in the first region at a screw thread position and h1 is a height of a screw thread of the female screw portion in the first region.

A method of installing a releasable shade membrane to a shade system is presented. The method comprises installing a tension release system within a structural component of the shade system. The tension release system comprises a threaded member configured to, when actuated, cause a coupling mechanism to move along an axis defined by the threaded member. The method also comprises coupling a shade membrane to the coupling mechanism. The method also comprises actuating the threaded member in a first direction, such that the coupling mechanism moves along the axis in a tensioning direction. The tension release system is configured to release applied tension upon actuation of the threaded member in a second direction, causing the coupling mechanism to move along the axis in a release direction. The release direction is substantially the reverse direction of the tensioning direction.

A method of installing a releasable shade membrane to a shade system is presented. The method comprises installing a tension release system within a structural component of the shade system. The tension release system comprises a threaded member configured to, when actuated, cause a coupling mechanism to move along an axis defined by the threaded member. The method also comprises coupling a shade membrane to the coupling mechanism. The method also comprises actuating the threaded member in a first direction, such that the coupling mechanism moves along the axis in a tensioning direction. The tension release system is configured to release applied tension upon actuation of the threaded member in a second direction, causing the coupling mechanism to move along the axis in a release direction. The release direction is substantially the reverse direction of the tensioning direction.

A fastener assembly for a motor vehicle is provided. The fastener assembly comprises a fastener configured to couple a first component to a second component of the motor vehicle, the fastener comprising a shank configured to be received within a bore of the first component; and a retaining member, the retaining member being couplable to the fastener and the first component, the retaining member comprising an opening configured to receive the fastener shank and to provide a resistance against the removal of the fastener shank from the bore of the first component, wherein the retaining member comprises a deformable portion configured to deform from a first state to a second state by virtue of the operating environment of the first component such that the fastener may be removed from the bore when the deformable portion is in the second state following operation of the motor vehicle.

A fastener assembly for a motor vehicle is provided. The fastener assembly comprises a fastener configured to couple a first component to a second component of the motor vehicle, the fastener comprising a shank configured to be received within a bore of the first component; and a retaining member, the retaining member being couplable to the fastener and the first component, the retaining member comprising an opening configured to receive the fastener shank and to provide a resistance against the removal of the fastener shank from the bore of the first component, wherein the retaining member comprises a deformable portion configured to deform from a first state to a second state by virtue of the operating environment of the first component such that the fastener may be removed from the bore when the deformable portion is in the second state following operation of the motor vehicle.

The present invention relates to a multi jackbolt tensioner and methods of using the same. The present invention alleviates some of the problems associated with presently available multi jackbolt tensioners.

The present invention relates to a multi jackbolt tensioner and methods of using the same. The present invention alleviates some of the problems associated with presently available multi jackbolt tensioners.

Embodiments disclosed herein generally relate to a system and method for tensioning a bolt. The bolt tensioning system may be used with variable length connection members, for example studs, in any one or more of the drilling, subsea, and process industries to couple a first member to a second member. The bolt tensioning system may remain coupled to the first member and the second member, while applying tension to all of the bolts at the same time, rather than having to torque or tension each bolt individually. The bolt system may accurately and uniformly tension all bolts in a single operation to provide reliable connections.

Embodiments disclosed herein generally relate to a system and method for tensioning a bolt. The bolt tensioning system may be used with variable length connection members, for example studs, in any one or more of the drilling, subsea, and process industries to couple a first member to a second member. The bolt tensioning system may remain coupled to the first member and the second member, while applying tension to all of the bolts at the same time, rather than having to torque or tension each bolt individually. The bolt system may accurately and uniformly tension all bolts in a single operation to provide reliable connections.