Communications: radio wave antennas – Antennas – Rod type
Patent
1985-07-02
1986-05-27
Lieberman, Eli
Communications: radio wave antennas
Antennas
Rod type
318467, H01Q 110
Patent
active
045918686
ABSTRACT:
A retractable motor-driven antenna 10 of compact size and light weight capable of being supported at the top of a support tube 14. A molded plastic housing 12, 30 in part forms the drive motor. A drive transmission 34 for extending and retracting the antenna mast 15 uses a timing belt 78 and pulley wheels 61, 62 and includes an overrunning clutch 84 or energy storage and release interconnection 76 between a drive pulley wheel 261 and a motor output shaft that drives a flexible cord 46 connected to the antenna mast. A switch assembly within the housing includes automatically stops the drive when the mast reaches its extended or retracted position or is obstructed. A coupling between the molded plastic housing and an antenna support tube isolates the housing from road vibration.
REFERENCES:
patent: 3582739 (1971-06-01), Daab et al.
patent: 3757232 (1973-09-01), Matsuda
patent: 4209792 (1980-06-01), Carolus et al.
Cusey Dar L.
Kitchens Roy A.
Lieberman Eli
National Industries, Inc.
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