Communications: radio wave antennas – Antennas – With means for moving directive antenna for scanning,...
Patent
1980-01-28
1981-07-28
Lieberman, Eli
Communications: radio wave antennas
Antennas
With means for moving directive antenna for scanning,...
343885, 339 5M, H01Q 150
Patent
active
042813280
ABSTRACT:
A flat slip ring which is larger in diameter than a conventional slip ring/brush assembly is attached to the rotatable unit concentric with and facing axially with respect to the shaft to carry the conventional slip ring/brush assembly. A circular brush is mounted on the housing of the slip ring/brush assembly concentric with the shaft and facing the flat slip ring. An electrically conductive spring urges the circular brush into contact with the flat slip ring and provides a low impedance ground from the rotatable unit to the housing of the slip ring/brush assembly.
REFERENCES:
patent: 3191177 (1965-06-01), Parzen
patent: 3604009 (1971-09-01), Behnke
General Dynamics Pomona Division
Johnson Edward B.
Lieberman Eli
Martin Neil F.
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