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:
Aug. 13, 2002
Filed:
Jul. 28, 1999
Yasuhiro Isomichi, Kanagawa, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
In a pager, two battery negative terminals are provided which are connected to an air battery ( ). One ( ) of the battery negative terminals is connected to ground (GND), while the other ( ) is connected through a resistor ( ) to the external power source positive terminal of an external terminal ( ). When the air battery ( ) is mounted thereon, the battery negative terminals ( and ) are electrically connected to each other (short-circuiting). In this case, even if the external power source is applied through the external terminal ( ) with the air battery ( ) mounted thereon, the current of the external power source flows through the resistor ( ) to the ground (GND). This feature prevents the air battery ( ) from being charged by the external power source.