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. 01, 2008
Filed:
Mar. 16, 2005
Jung Ho Ryu, Kyungki-do, KR;
Dae Hyun Jeong, Kyungki-do, KR;
Sung Won Min, Seoul, KR;
Byung Woo Kang, Seoul, KR;
Hyung Min Choi, Kyungki-do, KR;
Burhanettin Koc, Kyungki-do, KR;
Jung Ho Ryu, Kyungki-do, KR;
Dae Hyun Jeong, Kyungki-do, KR;
Sung Won Min, Seoul, KR;
Byung Woo Kang, Seoul, KR;
Hyung Min Choi, Kyungki-do, KR;
Burhanettin Koc, Kyungki-do, KR;
Samsung Electro-Mechanics Co., Ltd., Suwon, Kyungki-Do, KR;
Abstract
There is provided a flat type piezoelectric ultrasonic motor for generating a rotation force to a rotor by ultrasonic vibrations. In the piezoelectric ultrasonic motor, a vibrator is formed of elastic material at a given size, a plurality of piezoelectric plates are attached on the vibrator, a rotor is drivingly connected to the vibrator thereby to be rotated, and a power source unit applies driving voltages to the piezoelectric plates. The piezoelectric plates are arranged on quartered surface areas of the vibrator in such a way that longitudinal axes of neighboring piezoelectric plates form a given angle therebetween and opposing piezoelectric plates have opposite polarizations, and the power source unit applies alternating driving voltages to the piezoelectric plates thereby to make the rotor rotated, thereby making it possible to simplify the piezoelectric plates' shape, minimize its size and enhance its driving efficiency.