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:
Apr. 14, 1998
Filed:
Sep. 27, 1995
Applicant:
Inventor:
Naoyuki Kigawa, Shizuoka, JP;
Assignee:
Star Micronics Co., Ltd., Shizuoka-ken, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R / ;
U.S. Cl.
CPC ...
29594 ; 29606 ; 296091 ;
Abstract
A method of manufacturing an electroacoustic transducer which is not changed in its characteristic by heat caused by reflow soldering even if a coil is made of a general-purpose wire. The method of manufacturing the electroacoustic transducer including a magnetic driving portion composed of a core provided upright on a base and a coil wound around the core, comprises setting a height of the coil lower by a height, which corresponds to thermal expansion of the coil in reflow soldering, then subjecting the coil to heat processing to thermally expand the coil so that the height of the coil is set to an optimum height.