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:
Jan. 10, 2006
Filed:
Aug. 02, 2002
Seok Jin Yoon, Seoul, KR;
Hyun Jai Kim, Seoul, KR;
Ji Won Choi, Seoul, KR;
Chong Yun Kang, Seoul, KR;
Dong Kyun Lee, Kyonggi-do, KR;
Piotr Vasiljev, Vilnius, LT;
Seok Jin Yoon, Seoul, KR;
Hyun Jai Kim, Seoul, KR;
Ji Won Choi, Seoul, KR;
Chong Yun Kang, Seoul, KR;
Dong Kyun Lee, Kyonggi-do, KR;
Piotr Vasiljev, Vilnius, LT;
Korea Institute of Science and Technology, Seoul, KR;
Abstract
The present invention relates to a linear motor which draws its operating power from ultrasonic vibration above the frequency of 20 kHz which is generated by piezoelectric ceramic. More particularly, the invention relates to a linear piezoelectric ultrasonic motor which linearly operates a slider due to a frictional force generated by applying sinusoidal electric field with a 90 degree phase difference to a pair of piezoelectric ceramic. This causes an elliptical mechanical vibration on a shaking beam which is connected to the piezoelectric ceramic.