The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 11, 1990
Filed:
Aug. 05, 1985
Misao Kimura, Yokosuka, JP;
Harada Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A rod antenna including a plurality of rods of respectively different diameters which are coupled with each other in a manner to be slidable. Each of the larger diameter rods is provided with a rectangular strip of film made of resin such that it is mounted in a ring shape at least at the inside joint area for coupling the larger diameter rod with the smaller diameter rod. The rod antenna can be low in cost since the cutting process done for the conventional antennas is eliminated, and the rectangular film strip is inexpensive and can be easily mounted. Besides, a satisfactory waterproofing can be obtained as the rectangular strip of film is excellent in heat resistance, cold resistance, water repellency, wear resistance, etc. Furthermore, the operating noise of rods during the extension or retraction of the antenna is low and the appearance of the rod can be kept clean.