Communications: radio wave antennas – Antennas – With support for antenna – reflector or director
Patent
1978-05-24
1979-09-11
Lieberman, Eli
Communications: radio wave antennas
Antennas
With support for antenna, reflector or director
52116, H01Q 112, E04H 1234
Patent
active
041677404
ABSTRACT:
A tower, mast or antenna support construction is provided that is easily swung by one person from an operative, fully upright, antenna-carrying position to a lower maintenance or repair position. It has a normally upright, central mast or column having a member assembly of securely endwise-connected members for, at its upper end, carrying an antenna and/or rotor motor therefor. A supporting frame or leg structure is adapted to be securely imbedded at its lower end in a ground level cement or concrete base to extend upwardly therefrom and swingably carry the column at a mid position therealong. An adjustable counterweight is carried by a hollow lower end portion of the column and is used to provide a substantial center of gravity balance of the column assembly at its swing axis when its antenna and/or rotor are in place, but with the upper end portion of the column assembly provided with a slightly greater effective weight or slight off-balance. Self-adjusting force equalization and controlled movement of the column under windy conditions is effected by cable or wires slidably strung through open ends of tensioning arms of a centrally carried, quadrant-shaped cross brace or spread frame.
REFERENCES:
patent: 485883 (1892-11-01), Perry
patent: 2804950 (1957-09-01), Leslie
patent: 2875865 (1959-03-01), Rohn
patent: 3875573 (1975-04-01), Bueckert
patent: 3977139 (1976-08-01), Bryant
Hill, Popular Mechanics, Sep. 1955, pp. 146-148.
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