A self-drilling anchor assembly including a drill bit and an anchor positioned over and attached to the drill bit. In various embodiments, the drill bit includes a shank, a drill head integrally connected to one end of the shank, and a threaded tail integrally connected to an opposite end of the shank. The tail includes a mechanical engaging structure that is engageable by a tool to rotate the drill bit, and a helical thread formation to facilitate attachment of a securing device such as nut and washer to the tail of the drill bit. The anchor includes an elongated generally tubular body including an inner surface defining a longitudinally extending inner channel, and a head integrally connected to and extending from a first end of the body. The drill bit is configured to remain in the anchor and in the substrate after installation of the anchor assembly in the substrate.

A plug system for repairing a hole in a wall includes a cylindrical plug body that has a grooving implement adapted to cut or abrade the wall at one end and a thread projecting outwardly from the plug body at an opposing end. A plug is adapted for fitting within a rear cavity and has at least one screw aperture. In use, with the plug body fixed with the rotary tool, the rotary tool is activated to rotate the plug body to cut or abrade the wall around the hole. The thread of the plug body engages the wall until the proximal end of the plug body is substantially flush with the wall to repair the wall, and to provide screw apertures at the desired location on the wall to hold an object with screws if needed.

An anchor assembly for walls comprises a toggle member and a strap member pivotally mounted together, and a locking member. In a first position thereof, the toggle member is aligned with the strap member for insertion through the wall, whereas in a second position thereof, the toggle member extends behind the wall at an angle relative to the strap member which extends from the toggle member through the hole in the wall. The locking member is adapted to be displaced along the strap member until it engages the wall and to he locked on the strap member to prevent the locking member from displacing away from the toggle member. Therefore, the locking member and the toggle member are connected by the strap member and imprison the wall by abutting respectively the visible and hidden sides thereof. A fastener introduced through the locking member and the wall threadably engages an opening defined in the toggle member.

A self-drilling anchor including a screw and an anchor body configured to receive a shank of the screw, the anchor body including: a flange at an end oriented toward a head of the screw, a threaded portion, a deformable expansion portion between the flange and the threaded portion, and a rotation locking mechanism preventing rotation of the anchor body relative to the wall. The threaded portion is configured to engage with the screw thread and advance in a direction of the flange, by deforming the expansion portion, when the screw is screwed into the threaded portion. The anchor body further includes a piercing element at the opposite end from the flange, the anchor including a fastening mechanism between the screw and the anchor body, the fastening mechanism being detachable by a torque, applied between the screw and the anchor body, equal to or greater than a predetermined torque.

A hollow wall anchor includes a wall penetrating component having an externally threaded portion and a wall penetrating end portion, and a body component having a wall face engaging portion and an internally threaded portion that receives the externally threaded portion of the wall penetrating component. Rotation of the components together in a first direction for wall penetration moves both the wall penetrating component and the body component into the wall until the wall face engaging portion of the body component engages the wall to limit further rotation of the body component while the wall penetrating component continues to rotate such that interacting threads of the two components pull the wall penetrating component further into the body component. As the wall penetrating component is pulled further into the body component one or more retention arms are expanded outwardly behind a rear surface of the wall.

An anchor fastener is described. The anchor fastener includes a head, a generally cylindrical shaft extending from the head, a base at a distal end of the shaft, and at least one frangible portion configured to frangibly connect the shaft to the base. The shaft includes a helical thread that extends along an outer surface of the shaft towards the distal end of the shaft. The frangible portions are separable from the base and the shaft under application of a force to the shaft. The base includes a distal surface and an engagement portion configured to engage an object to be anchored to a mounting surface and configured to hold the anchor fastener to the object before installation of the shaft through the object and into the mounting surface. The base includes a thread guide configured to support the helical thread during installation of the shaft.

A self-drilling expandable anchor operable with a self-drilling expandable anchor installation tool.

An anchor assembly for walls comprises a toggle member and a strap member pivotally mounted together, and a locking member. In a first position thereof, the toggle member is aligned with the strap member for insertion through the wall, whereas in a second position thereof, the toggle member extends behind the wall at an angle relative to the strap member which extends from the toggle member through the hole in the wall. The locking member is adapted to be displaced along the strap member until it engages the wall and to be locked on the strap member to prevent the locking member from displacing away from the toggle member. Therefore, the locking member and the toggle member are connected by the strap member and imprison the wall by abutting respectively the visible and hidden sides thereof. A fastener introduced through the locking member and the wall threadably engages an opening defined in the toggle member.

An expansion anchor, in particular for mineral construction materials, for example, concrete, is disclosed. A generic expansion anchor is equipped with an expansion sleeve for anchoring on a borehole wall and with an anchor bolt, which is disposed through the expansion sleeve, where the anchor bolt has an expansion region for expansion of the expansion sleeve. The anchor bolt has a cutting thread for cutting a thread into the borehole wall. A respective setting tool and setting method are also disclosed.

An expansion anchor is provided, which is generally comprised of a drill rod, cone tip and anchor to create an undercut. In one embodiment, the drill rod is connected to the setting tool while in another embodiment, the cone tip is connected to the setting tool. In both instances, rotation of one or the other engenders a corresponding rotation from the anchor, which forces the cone tip upwards and into the anchor, which thus forces the anchor outwards and sets the expansion anchor. A sectional coloured threading is also provided to allow an operator to determine when the anchor is sufficiently set.