Method for manufacturing a telescopic antenna for vehicles

Details Method for manufacturing a telescopic antenna for vehicles Method for manufacturing a telescopic antenna for vehicles

1995-02-23

1997-06-17

Arbes, Carl J.

Metal working

Method of mechanical manufacture

Electrical device making

148409, 148410, H01P 1100

Patent

active

056385943

ABSTRACT:
A multi-stage telescopic antenna for use in vehicles and a method for manufacturing such an antenna in which the antenna element, which comprises uppermost rod and conductive pipes, is free of any bending or breaking damage even if a large load is applied to the antenna element from a lateral direction, and there is no permanent deformation occurs even after the load is removed, so that the antenna element can always be maintained straight and smooth and stable extension and retraction can be executed.
At least the conductive pipes 12 through 14 are formed from a high-elasticity material obtained by heat-treating SUS 631. In the heat treatment, the material is heated at a standard temperature of 480.degree. C..+-.5.degree. C. and then gradually cooled.

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