Black Decker Inc.

Philipp Mahrenholtz

Jacob Olsen

Manfred Droste

Alan Armiento

Thilo Pregartner

Didier Villatte

Alexander Ameiser

Kirk Reimer

An undercut anchor having an at least partially threaded rod portion having an outer thread diameter D. The anchor having an expansion feature coupled to the rod portion and an expansion sleeve having an outer diameter D, an inner diameter Dand a wall thickness T. Furthermore, the expansion sleeve has a plurality of circumferentially distributed fingers which are configured to flex outwards when a ramp portion of length Lof each of the respective fingers is forced against the expansion feature during installation of the undercut anchor. The fingers each having a length Land a distance therebetween of W.

Undercut anchor

A toggle fastener includes an arm extending along a first axis and defining a threaded opening through the arm along a direction perpendicular to the first axis the toggle fastener. A rachet strap extends along a second axis and is pivotally coupled to the arm adjacent a proximal end of the rachet strap. The arm and rachet strap cooperate to block the arm and rachet strap from aligning. Pivoting the arm and the rachet strap relative to each other about a first direction, the angle between the first and second axes can be reduced to a first angle before further pivoting is blocked in a first blocking configuration of the toggle fastener. Attempting to pivot the rachet strap further in the first direction relative to the arm causes the rachet strap to recoverably flex.

Toggle fastener and method of use

A base member for cooperating with a support member and at least one fixing member to form an anchor assembly mountable to a form board on which wet concrete may be poured during formation of a concrete substrate. The base member includes: a mounting portion for positioning the anchor assembly on the form board prior to inserting the fixing members into the form board; an aperture having first and second generally opposed ends, the first end being open to facilitate insertion of the support member into the aperture; and a barrier reconfigurable in use from a first configuration, in which the barrier restricts ingress of wet concrete into contact with the support member via the second end of the aperture, to a second configuration in which the barrier allows an object to extend via the second end of the aperture into contact with the support member.

Base member for an anchor assembly and method of use

Growing community of inventors

Frankfurt-am-Main, Germany

Philipp Mahrenholtz