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. 07, 1993
Filed:
Nov. 13, 1992
Steven C Emmert, Arlington Heights, IL (US);
Kenneth W Carlson, Hawthorn Woods, IL (US);
Nicholas Mischenko, Mt. Prospect, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
An antenna apparatus for a radiotelephone (100) comprises a shroud (207), an antenna (209) and releasable latch means (231, 219, 223, 229). The shroud (207) is movable between a first and a second position. The antenna is an extendable helical coil (209) having a shortened axial length when the shroud is moved to the first position and a lengthened axial length when the shroud is moved to the second position. The extendable helical coil (209) exerts biasing forces on the shroud (207) when the shroud is moved to the second position to urge the shroud (207) towards the first position. The releasable latch means, including a platform (205) having a flexible end portion (231) adapted for cooperative engagement with the shroud (207), latches the shroud (207) at the second position when the shroud (207) is moved to the second position and releases the shroud (207) from the second position, responsive to flexing the flexible end portion (231), permitting the biasing forces to return the shroud (207 ) to the first position.