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:
Jun. 06, 1989
Filed:
Mar. 31, 1988
Applicant:
Inventor:
Fumio Murayama, Tendo, JP;
Assignee:
Pioneer Electronic Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B / ; G08B / ;
U.S. Cl.
CPC ...
381 86 ; 340426 ; 340568 ;
Abstract
A speaker system for a motor vehicle includes a detection device which detects a change in the state of fixing of the speaker system on a part of the vehicle body by means of a fixing device. When the change in the fixing state is detected, an alarm is generated by an alarm device connected to the detection device, so that loosening of the fixing device such as a holding screw is surely prevented.