Abstract: A wall anchor is provided and includes a nose cone structure including a body and a primary cone, which is rotatably coupled to the body and manually urgeable to penetrate a substrate, a detent assembly, disposed on the nose cone structure, which is engageable to maintain the primary cone in a first position and a trigger integrally coupled to the nose cone structure and actuatable to selectively disengage the detent assembly such that the primary cone is permissively rotatable about the body into a second position.

Abstract: A wall anchor is provided and includes a nose cone structure including a body and a primary cone, which is rotatably coupled to the body and manually urgeable to penetrate a substrate, a detent assembly, disposed on the nose cone structure, which is engageable to maintain the primary cone in a first position and a trigger integrally coupled to the nose cone structure and actuatable to selectively disengage the detent assembly such that the primary cone is permissively rotatable about the body into a second position.

Abstract: An anchor is provided that is inserted into a bore in a cementious member, the bore having a side wall. A tensioning head is connected to the leading end of the stem and when the stem is moved the tensioning head moves with the stem. The outer surface of the tensioning head flares generally outwardly from the trailing end to the leading end of the tensioning head. The anchor also has an expansion sleeve, and the stem can move longitudinally through the expansion sleeve when the expansion sleeve is held in a fixed position, and the tensioning head pushes upon the expansion sleeve, causing it to flare outwardly. The expansion sleeve is provided with first and second grooves that assist the expansion sleeve in expanding without splitting.

Abstract: A combinational bolt which comprises a screw unit and a sleeve unit. The screw unit has a plurality of threads on a surface of a front terminal, the threads make the screw unit connect with a target object, another terminal of the screw unit forms a first concave portion. The sleeve unit, which is set inside the target object, also connects and surrounds the screw unit. A sink-proof portion is set on the surface of one terminal of the sleeve unit, the sink-proof portion makes the sleeve unit clamp onto the target object, and the outer surface of the sleeve unit has a plurality of strengthen circle units and a plurality of cut slots, and a second concave portion forms inside the sleeve unit, the first concave portion and the second concave portion clamp together.

Abstract: An undercut anchor element comprising a shank of an anchor bolt. The shank passes through a base part, which is provided for effecting an anchoring, passes through a spacer sleeve, and at the end thereof is provided with a tightening head. The tightening head can be pulled inside the base part, which is subdivided into anchoring segments by slots provided over a portion of the length of the base part. The slots lead from the front free end of the base part up and into the area of an encircling groove. The anchoring segments have the outer shape of two truncated cones which coincide with their ends that have a smaller diameter. The truncated cone that is located in front in a direction of mounting has an obtuse cone angle of greater than 150° and the adjoining truncated cone has an acute cone angle of less than 30°.

Abstract: The expanding sleeve (1) of the anchor has an interior bore (13) and an expander plug (15) which are conical, with roughly the same cone angle, and designed so as, through the wedge effect caused by the plug (15) being driven into the sleeve (1) to cause it to expand. The sleeve (1) has, at its periphery, an annular weakening groove (9) intended, during expansion, to shorten its axial expansion length.

Abstract: An expandable bolt device secures a fragile part, like a quartz part, onto a second part. The expandable bolt device comprises a bolt and a locking device near a distal end of the bolt, the locking device being movable radially between an outward locked position and an inward unlocked position by moving the bolt axially with respect to the locking element. The distal end of the bolt is accommodated within a hole in a surface of the fragile part, which hole includes a first cylindrical section adjacent the surface and a wider second cylindrical section that is further away from the surface. In the unlocked position, the diameter of the expandable bolt device is smaller than the first diameter. After insertion of the expandable bolt device into the hole, the locking element is located in the second section of the hole. In the locked position, the locking element expands to a diameter wider than the first hole section and narrower than the second hole section.

Abstract: An attachment element for an anchor rod (14) including a substantially cylindrical expansion member (1) having an axial bore (8), and one-piece expandable member (2) extending, at least partially, into the axial bore (8) of the expansion member (1) without a possibility of disengagement from the expansion member (1) and having, at least along a portion of its longitudinal extent, a conical section tapering in a direction opposite to a setting direction (S) of the anchor rod (14), an axial bore (4), and at least two elongate slots (11).

Abstract: An anchor bolt comprises a fixing rod (1), an expandable sleeve (2) and an expansion core (3) integral in translation with the fixing rod (1), intended to expand the sleeve (2). The sleeve (2) has a plurality of slots (9,9′) widening towards the free end of the sleeve (2), forming a plurality of expansion teeth (18-20) cooperating with the expansion core (3). The inner wall of the edge of the teeth (18-20) is blunt and the thickness of each tooth is bevelled to decrease towards the free end of the sleeve.