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:
Dec. 16, 1997
Filed:
Feb. 21, 1995
Nicholas Mischenko, Mt. Prospect, IL (US);
Steven C Emmert, Arlington Heights, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
An antenna assembly (200) for use in a portable radio (100). The antenna assembly (200) includes first and second housings (113 and 203), a helical antenna (301) and a terminal (205). The first housing (113) is telescopically moveable with respect to the second housing (203) between a retracted and an extended position. The helical antenna (301) has a first dimension when the first housing (113) is moved to the first position and a second dimension when the first housing (113) is moved to the second position. The terminal (205) is coupled to the helical antenna (301) for replaceably coupling to the portable radio (100) by a user. Additionally, a pin (303), covered with a thickened solution (304), is disposed within the helical antenna (301)to dampen mechanical vibrations of the helical antenna (301) and a detenting mechanism retains the first housing (113) in the first and the second positions.