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:
May. 27, 2014
Filed:
Sep. 04, 2008
Hidefumi Takahashi, Isesaki, JP;
Toshio Takahashi, Kiryu, JP;
Yoshihiro Murakoshi, Toyokawa, JP;
Mitsuba Corporation, , JP;
Abstract
An electric horn () has a coil bobbin () in a casing (). A fixed iron core () is fixed in a hole () in the coil bobbin () and is magnetized to define an exciting coil (C). A moving iron core () is at the center of a diaphragm () at the open end of the casing () and faces the fixed iron core (). The moving iron core () is displaced relative to the fixed iron core () by a power supply of the exciting coil (C); thus beeping an alarm. The moving iron core () has an end face toward the fixed iron core () that strides over a reference position (N) within the amplitude (W) of the moving iron core (). The end portion on the moving iron core () side of the wound portion () of the exciting coil (C) is the reference position (N).