Motor driven antenna apparatus for use in automobiles

Details Motor driven antenna apparatus for use in automobiles Motor driven antenna apparatus for use in automobiles

1998-04-22

1999-07-27

Wong, Don

Communications: radio wave antennas

Antennas

Rod type

343840, H01Q 110

Patent

active

059298260

ABSTRACT:
A motor driven antenna apparatus for use in automobiles according to the present invention, includes a telescopic antenna mounted on the automobiles, a drive control mechanism for extending and retracting the telescopic antenna by a motor driven motor, a case for holding the drive control mechanism, a through-hole formed in a side wall of the case to make an inside and an outside of the case communicate with each other, and a duct having a first opening portion at one end and a second opening portion at other end, and attached to the case such that the first opening portion is connected to the through-hole outside the case and the second opening portion is formed outward below the through-hole. A foreign object blocking member is provided below the second opening portion and opposed to the second opening portion with a predetermined distance therebetween.

REFERENCES:
patent: 4393383 (1983-07-01), Yamashita
patent: 4742360 (1988-05-01), Carolus et al.
patent: 4907007 (1990-03-01), Druecker et al.
patent: 5235344 (1993-08-01), Shinkawa et al.
patent: 5434582 (1995-07-01), Koike et al.

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