Communications: radio wave antennas – Antennas – With means for moving directive antenna for scanning,...
Patent
1984-08-14
1986-10-14
Lieberman, Eli
Communications: radio wave antennas
Antennas
With means for moving directive antenna for scanning,...
343882, 343766, 248183, H01Q 308
Patent
active
046175725
ABSTRACT:
A motor-driven adjustable mounting structure for satellite T.V. dish antennae which operates to scan an in line of sight segment of a geostationary T.V. relay satellite orbit belt. The mounting structure includes a vertical mounting post, a universal levelling structure atop the post, a vertically extending body pivotally carried by the levelling structure on a horizontal axis, a head structure rotatably carried by and projecting upwardly from the body and including an antenna carrier structure carrying the antenna with its axis normal to the vertical axis of the body and turning axis of the head. The mounting structure further includes a motor driven drive to rotate the head relative to the body and comprising a quadrant gear fixed to the head on an axis concentric with the turning axis of the head, a worm gear rotatably carried by the body and drivingly engaging the quadrant gear, a gear reduction box carried by the body and driving the worm gear and a reversible electric motor carried by and driving the gear box. The mounting structure further includes structure to pivot the body relative to the levelling structure and adjust the inclination of the antenna and comprising a lever arm fixed to and projecting from the body on a plane parallel with the axis of the antenna and an axially extensible strut structure fixed to and extending between the free end of said arm and said levelling structure at a point spaced below the pivotal axis of the body.
REFERENCES:
patent: 3495261 (1970-02-01), Lastinger et al.
patent: 4126865 (1978-11-01), Longhurst et al.
patent: 4454515 (1984-06-01), Major et al.
patent: 4475110 (1984-10-01), Hutchins
Lieberman Eli
Maxwell Georges A.
Wimer Michael C.
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