Patent ID: 7774994

Claim:
A telescoping tower system comprising: at least three mast sections each having upper and lower ends and walls separated by corners between the ends, the mast sections having different cross sectional sizes to permit the sections to nest, the largest mast section forming the lowermost base section and the smallest mast section forming the uppermost top section, each of the mast sections being formed from a first section comprising a single sheet having four corners integrally formed therein with opposite sheet ends forming an opening between two of the corners, and a second section comprising a strip secured over the opening between the two of the corners; pulleys mounted near the upper and lower ends of a wall of an intermediate mast section, one of the pulleys being oriented with respect to the mast section wall to permit a cable to be routed from inside the mast section to outside the mast section; a cable drum; and a cable extending between adjacent nested mast sections from the uppermost mast section through the pulleys on the intermediate mast section to the cable drum, the cable adapted to raise and extend the mast sections upon rotation of the cable drum in one direction.