A thread fixing base and a quick fixing structure, wherein the thread fixing base is used in conjunction with a thread rod. The thread fixing base comprises a base and a top cover, wherein the base has a thread groove, and is provided with a hinge base on one side thereof, and is provided with a buckle groove on the other side thereof. The top cover has a limit top plate that is pressed against the thread ring surface of the thread rod and extends axially along the thread ring surface. On one side of the limit top plate, the top cover is provided with a shaft component that is hinged and matched with the hinge base. On the other side of the limit top plate, the base is provided with a buckle plate that is locked with the buckle groove.

A split coupler, and methods of making and using such a split coupler, whereby the split coupler includes a first semi-cylindrical member, a second semi-cylindrical member, and an interlocking assembly configured to interlock the first and second semi-cylindrical members to form a substantially cylindrical coupler having a coupler inner surface which defines a throughbore. Additionally, the split coupler can include spiral threads coupled to the coupler inner surface. Furthermore, the split coupler can include a flange inwardly extending from the coupler inner surface.

Disclosed is a disassembleable nut comprised of two half-nuts held together by two bolts. The nut can be disassembled and reassembled at any points along the length of a bolt onto which the nut is screwed.

A multi-piece nut for use with a shock is provided. The multi-piece nut includes a first nut member and a second nut member removably coupled to the first nut member. The first nut member and second nut member include threads on an inner surface that correspond to each other when coupled together. The multi-piece nut may also include an aperture formed when the first nut member and second nut member are coupled together. The first and second nut members are coupled around a shock absorber, and the shock absorber extends through the aperture and engages the threads. The nut can then be rotated to adjust the spring of the shock.

A system for establishing an anchorage or augmentation in hard tissue with the aid of a material having thermoplastic properties, which is brought to the site of the anchorage or reinforcement in a solid state, is liquefied in situ, and, in a liquefied state, is displaced to contact the object. The system includes a housing with a proximal housing part and mounted therein, a transmitting piece possibly coupled to an energy source and a driver spring, a distal housing part releasably coupled to the proximal housing part, a permeable sleeve couplable to the distal housing part, and a thermoplastic element positionable in the permeable sleeve. The two housing parts, the transmitting piece, the driver spring and the permeable sleeve form a closed load frame in which the thermoplastic element is compressed between the transmitting piece and the permeable sleeve.

A thread repair assembly is provided. The thread repair assembly comprises a cutting-nut housing including a first axial end, a second axial end and an internal cutting-nut interface, the first and second axial ends each having an opening. The thread repair assembly further includes a cutting nut at least partially enclosed by the cutting-nut housing and including a plurality of cutting threads configured to engage a threaded element when the assembly is urged in a first axial direction and disengage the threaded element when the thread repair assembly is urged in a second axial direction opposing the first axial direction.

A split nut and assembly steps for fitting the nut around an exposed portion of anchor bolt having no convenient access for conventional nuts to engage. The split nut includes first and second nut halves, and each nut half has an interior surface having a threaded half cylinder that, when aligned with the other threaded half cylinder and joined along joining surfaces, forms a threaded opening. The two half nuts may be connected by connectors that are inserted into penetrations that extend through at least a portion of both half nuts. At least one end of the penetration extends from the joining surface through the exterior surface of the half nut so that the connector may be inserted into the penetration. The exterior surface of both half nuts also include flat that, when the half nuts are joined, are dimensioned to form opposed parallel drive surfaces configured to be engaged by a wrench for screwing the split nut onto the bolt.

A quick-release screw connection has a threaded bolt having an external thread and has a nut part having an internal thread. The nut part has a threaded piece in which the internal thread is formed, wherein a through-hole, the diameter of which is larger than the outer diameter of the internal thread and smaller than the outer diameter of the threaded piece, is passed through the threaded piece rotated by an angle relative to a longitudinal axis of the internal thread.

A connector arrangement for connecting a timber column to a base includes a releasable split nut for releasably gripping a rod, where the releasable split nut is disposed on the timber column, and a quickly mountable nut, where the quickly mountable nut is disposed on the base. The quickly mountable nut allows insertion of the rod into the quickly mountable nut and inhibits withdrawal of the rod from the quickly mountable nut.

A connecting rod coupling device for attaching a component to an aircraft fuselage and/or stiffening the fuselage has a first coupler, and a second coupler couplable to the first coupler. The first coupler has an elongate body with a first channel on a lateral surface along a first longitudinal axis. The second coupler has a hollow-cylindrical portion, which, on an inner face along a second longitudinal axis, has a second channel complementing the first channel. The hollow-cylindrical portion has a radial cutout through which the elongate body is radially insertable into the second channel from outside the hollow-cylindrical portion. The second coupler has a closure body, which closes the radial cutout, and can be positioned removably in the cutout to complete the second channel on a radially internal face. The second coupler also has an element, pushable onto the hollow-cylindrical portion to secure the closure body on the hollow-cylindrical portion.