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. 07, 2002
Filed:
Sep. 06, 1995
Applicant:
Inventors:
Hideaki Miyakawa, Yokohama, JP;
Masaichi Satoh, Tokyo, JP;
Kenichi Nagasawa, Kawasaki, JP;
Reiji Mitarai, Hachioji, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 4/108 ; H04R 3/00 ;
U.S. Cl.
CPC ...
H01L 4/108 ; H04R 3/00 ;
Abstract
A sound signal from an audio amplifier is converted to a speed signal by a drive circuit, and a cone sheet which forms a diaphragm is driven by a supersonic wave motor driven by a travelling vibration wave through a link and a leaf spring.