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. 06, 2004
Filed:
Apr. 01, 2003
Yung-Sung Lan, Hsinchu, TW;
Ching-Hsing Huang, Hsinchu, TW;
Chi-Lone Chang, Hsinchu, TW;
Minsun Ouyang, Hsinchu, TW;
Yu-Chien Huang, Hsinchu, TW;
Hsiang-Chieh Yu, Hsinchu, TW;
Chen-Yuan Huang, Taipei, TW;
Tzuan-Ren Jeng, Hsinchu, TW;
Jau-Jiu Ju, Hsinchu, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
This specification discloses a piezoelectric ultrasonic motor with multi-layer thin disks. A buzzer disk made of a piezoelectric material is supplied with an alternate voltage to produce alternately expanding and shrinking deformation. An elastic vibration disk in connection with the buzzer disk produces standing waves to transport kinetic energy to the exterior. A driving module symmetric in the vertical or horizontal direction is also formed. This does not only reduce the abrasion among the components, but also provide homogeneous forward and reverse driving forces.