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, 1991
Filed:
Feb. 27, 1990
Masaki Yamaguchi, Gifu, JP;
Brother Kogyo Kabushiki Kaisha, Aichi, JP;
Abstract
This invention relates to a piezoelectric transducer comprising an elastic member resonating with substantially the same frequency in a first and a second directions intersecting therewith, a first exciter exciting the vibration of substantially the same frequency in both directions of the elastic member, and a second exciter exciting the vibration of the above frequency in the first direction of the elastic member and exciting the vibration of substantially the same frequency and of the negative phase in the second direction. Also, the other transducer comprising an electromechanical conversion element which generates ultrasonic vibration by applying AC electric signal, an elastic member where at least 2-way substantially orthogonal vibration is excited by the vibration of the electromechanical conversion element and a holding member made of or constructed as to have a different directional elastic characteristic at a node of either one at least directional vibration which the rigidity of the intersecting direction is set smaller than the rigidity of the vibrational direction having the node.