Abstract: Reinforcing apparatus for tower monopoles. The reinforcing apparatus comprises vertical threaded reinforcing bar rods, or rods with threaded ends, arranged around the pole and embedded in the pole foundation. The rods extend upward and are attached to the pole at spaced intervals using brackets. There are means provided for attaching rod segments to the pole at vertically spaced intervals, such as brackets. The rods comprise distinct rod segments, and means are provided for joining the vertically adjacent rod segments are provided, such as threaded couplings. Brackets include anchor bolts that fasten the bracket to the pole and U-shape bolts fastened to the bracket to hold the rod segments to the bracket. The curved portions of the U-bolts are aligned in the grooves of the threaded reinforcing bar, preventing relative movement of the bracket and the rod segment. A method is also provided for reinforcing a tower monopole.
Abstract: A shield for shielding radio frequency emissions being emitted from a communications antenna. The shield has a first layer of material having the physical property of generally absorbing radio frequency electromagnetic emissions and a second layer of material having the physical property of generally reflecting radio frequency emissions. The first layer of material is positioned between the second layer of material and the communications antenna. Therefore, the first layer of material absorbs a portion of the radio frequency emissions from the communications antenna, and the second layer of material reflects back the remaining emissions to the first layer of material. Therefore, the first layer absorbs a further portion of the remaining emissions. A layer of absorbing material is placed between the combined first & second layers and a material that is transparent to radio frequency emissions and through which the communications antenna radiates radio frequency energy.
Type:
Grant
Filed:
February 13, 2003
Date of Patent:
October 12, 2004
Assignee:
SpectraSite Communications, Inc.
Inventors:
Ted A. Abrams, John M. Duckworth, Gregory A. O'Neill, Jr., Ludwik J. Wodka, Arie C. Slaa