Patent ID: 7537085

Claim:
An apparatus for use in fall restraint anchoring comprising: a base member for mounting at a location where workers require to be restrained against falling; a post having a bottom mounting for attachment to the base member such that the post is supported in upstanding arrangement from the base member at the location; at least one attachment loop at an upper end of the post for connection to a fall restraint connection line of a worker; the post comprising a plurality of coaxial cylindrical tubes, each of circular cross-section, including a outer tube and an insert tube mounted as a sliding fit inside the outer tube for sliding movement longitudinally thereof for movement from an extended operating position to a retracted position, either the outer tube or the insert tube being attached to the bottom mounting; the outside surface of the insert tube having a groove formed longitudinally thereof extending only part way therealong so that the groove terminates at its upper end a position spaced from an upper end of the insert tube and so that the groove terminates at its lower end a position spaced from a lower end of the insert tube; and the outer tube having a projecting element thereon at a position thereon which is fixed both angularly and axially relative thereto and which extends radially inwardly of the inside surface thereof so as to extend into the groove; the groove and the projecting element being arranged and located so as to limit longitudinal movement of the insert tube relative to the outer tube so that the insert tube is limited to longitudinal movement only between said extended and retracted positions; and the groove, being mounted on the inner tube, and the projecting element, being angularly fixed to the outer tube, preventing relative rotation of the outer tube and the insert tube at any point along the longitudinal movement thereof.