F - Mech Eng,Light,Heat,Weapons – 16 – B
Patent
F - Mech Eng,Light,Heat,Weapons
16
B
85/27
F16B 13/06 (2006.01)
Patent
CA 1058923
BOLT ANCHOR ABSTRACT OF THE INVENTION: A head-out expansion anchor which is particularly suitable for securing a heavy object to a support such as a floor or wall is disclosed. The anchor includes an elongated and generally cylindrical anchor sleeve which is formed from flat sheet stock and rolled to a given diameter wherein the confronting ends form a longitudinal slot extending from end to end thereof. A bolt is provided and includes a shank, having a diameter corresponding to the diameter of the formed sleeve, and a threaded portion of a reduced diameter at its leading end thereof. A tapered or conical transition portion is provided between the shank and threaded portions of the bolt. The threaded end receives a tapered expander cone having a threaded bore therein and wherein the sleeve is disposed between the shank and the expander cone. The expander cone is drawn into the expander sleeve by rotating the torque-tool engaging end of the bolt, such as by means of a wrench. The corners of the expander sleeve, at its trailing end thereof, are deflected outwardly to provide a pair of sharp resilient teeth for biting engagement with the side walls of the bore. The expander cone is provided with at least one radially pro- jecting rib or tab which is received within the slot of the expander sleeve at its other end thereof, thereby to prevent relative rotation between the cone and the sleeve. - 1 -
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