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:
Nov. 16, 2010
Filed:
Oct. 23, 2009
Byung Woo Kang, Seoul, KR;
Burhanettin Koc, Kyungki-do, KR;
Jung Ho Ryu, Kyungki-do, KR;
Sang Min on, Seoul, KR;
Dong Kyun Lee, Seoul, KR;
Byung Woo Kang, Seoul, KR;
Burhanettin Koc, Kyungki-do, KR;
Jung Ho Ryu, Kyungki-do, KR;
Sang Min On, Seoul, KR;
Dong Kyun Lee, Seoul, KR;
Samsung Electro-Mechanics Co., Ltd., Suwon, KR;
Abstract
A piezoelectric ultrasonic motor includes a piezoelectric stator including a hollow metal tube having a quadrangular cross section and four piezoelectric elements each installed in each outer face of the metal tube; a rotary shaft including a rotation bar inserted into an inner space of the metal tube, an upper rotation member provided around the rotation bar in contact with an upper surface of the piezoelectric stator, the rotation member rotating in response to the strain of the piezoelectric stator, a lower rotation member adapted to restrain the rotation of the rotation bar and contacting a lower surface of the piezoelectric stator and a power transmission member provided at one portion of the rotation bar to transmit the rotation of the rotation member to an object to be transported; and a power supply to apply a supply voltage necessary for the actuation of the piezoelectric stator.