High rigidity, low center of gravity polar mount for dish type a

Details High rigidity, low center of gravity polar mount for dish type a High rigidity, low center of gravity polar mount for dish type a

1984-07-24

1987-03-24

Lieberman, Eli

Communications: radio wave antennas

Antennas

With support for antenna, reflector or director

343766, 248185, H01Q 304

Patent

active

046528903

ABSTRACT:
A pair of facing channel members, or a short length tube saddle about the upper end of a vertical post and pivotably mounts a rocker assembly in the form of back to back channel bars. A bolt projects across the top of the facing channel members or tubes to locate the rocker bar and facing channel member or tube on the top of a vertically upstanding post. Right angle ball and socket mounts within end plates joining the rocker assembly back to back channel bars have projecting bolts received within paired frame tangs projecting outwardly from an open frame rigidly mounted to the dish antenna. The upper frame tang bears a slot to permit declination adjustment. The sweep, azimuth and latitude axes intersect each other to provide the lowest possible center of gravity for the antenna mount and minimize the moment arms for the members forming the same to thereby provide a highly rigid, heavy wind resistant support for the dish type antenna. A jack plate mounted at right angles to the back to back channel bars and fixed to the ends of the quadrant plates support a linear motor whose opposite end is coupled to the open frame for sweeping the antenna through the satellite zone of the geosynchronous orbit. The quadrant plates lock to the facing channel members or short length tube after mount latitude adjustment.

REFERENCES:
patent: 4126865 (1978-11-01), Longhurst et al.
patent: 4454515 (1984-06-01), Major et al.
patent: 4475110 (1984-10-01), Hutchins
patent: 4490726 (1984-12-01), Weir
patent: 4528569 (1985-07-01), Felter et al.
Long's Electronics Satellite TV Dealer Flyer No. 101, pp. 1-6, 9-82.

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