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:
Mar. 24, 2009
Filed:
Feb. 15, 2005
Suk-won Lee, Kunpo-si, KR;
Byung-il Ahn, Seoul, KR;
Dong-woo Kang, Daejeon, KR;
Ki-hyun Kim, Daejeon, KR;
Dae-gab Gweon, Daejeon, KR;
Dong-min Kim, Daejeon, KR;
Suk-won Lee, Kunpo-si, KR;
Byung-il Ahn, Seoul, KR;
Dong-woo Kang, Daejeon, KR;
Ki-hyun Kim, Daejeon, KR;
Dae-gab Gweon, Daejeon, KR;
Dong-min Kim, Daejeon, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
A transfer apparatus includes at least four fine actuators each having a coil assembly with a wound coil, and a pair of movable magnets having different polarities and spaced from each other to interpose the coil assembly therebetween, a coil supporter to support the at least four coil assemblies so that the fine actuators are arranged in a pair of groups thereof symmetrically with respect to a predetermined straight line, a magnet supporter to support the at least four movable magnets corresponding to the respective coil assemblies, and a controller to control the fine actuator to move one of the coil supporter and the magnet supporter with respect to the other one. With this configuration, a transfer apparatus can perform a super-precision positioning control by decreasing a positioning control error.