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:
Oct. 24, 1995
Filed:
Jul. 15, 1993
Sony Corporation, Tokyo, JP;
Abstract
A portable radiotelephone transmits and receives voice information signals to and from a telephone base station by radio. The radio telephone includes a telephone main body having a key pad section mounted on its outer surface and containing a microphone unit. A speaker housing containing a speaker unit is slidably mounted on the telephone main body. A switching unit located between the telephone body and the speaker housing establishes electrical connection and disconnection between the telephone body and the speaker housing depending upon their relative positions as changed by sliding the speaker unit. Electrical connection is established when the speaker housing is moved in a direction away from the microphone unit located on the telephone main body.