Patent ID: 6401863
Filing Date: 2002-06-11
Classification: B66D

Abstract:
A multi-purpose portable davit anchoring system for use in a high-rise structure, comprising:a support mast assembly of adjustable length and having a circumference, said mast assembly comprised of a plurality of detachable sections including a screw jack member for adjusting the height of said mast assembly, adapted for removably mounting on, and biasing said mast assembly at each end thereof against, opposing structural surfaces; a pair of mounting brackets adapted to be affixed to said opposing structural surfaces in opposing alignment, for removably receiving the ends of said mast assembly; at least one boom member removably attached to said mast assembly, at any one of a predetermined plurality of positions disposed around the circumference of said mast assembly, said boom member having a proximal and a distal end and comprising a horizontal arm, a tubular vertical strut at its proximal end, and a cross brace connecting said vertical strut to said distal end, and having at least one turning block attached to said distal end; a pair of boom support brackets affixed to said mast assembly for supporting a boom member therebetween, said support brackets having at least one pair of vertically aligned first orifices therethrough; a mounting pin for removably fastening said boom member to said support brackets by alignment of said vertical strut between said first orifices and insertion of said mounting pin through said vertical strut and said first orifices; locking means for preventing the vertical strut from rotating on the mounting pin, comprising a plurality of second orifices, smaller in diameter than the first orifices, disposed about one of each pair of vertically aligned first orifices, together with locking pins removably inserted in said second orifices, whereby said boom member is fixed at one of a plurality of predetermined positions about the circumference of said mast assembly; reeling means, including a winch, mounted on said mast assembly, adapted for raising and lowering a load; a cable passing through said turning block and around said winch, said cable having attachment means at one end thereof for attaching a load; and braking means for controlling speed and extent of descent of a load being lowered by said reeling means and cable.