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:
Sep. 04, 2012
Filed:
Aug. 31, 2007
Applicants:
Jung Keun Cho, Seoul, KR;
Kyo-woog Koo, Cheonan-shi, KR;
BO Ram Chan Sung, Asan-shi, KR;
Inventors:
Assignee:
Semes Co., Ltd., Chungcheongnam-do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23B 31/103 (2006.01);
U.S. Cl.
CPC ...
Abstract
A chucking member configured to chuck the edge of a substrate includes a chucking pin which is eccentric from the rotation center. The chucking pin has a streamline shape and includes a first front-end portion disposed at the front end relative to the flow of an air current generated by the rotation of the substrate and a first back-end portion disposed at the back end relative to the flow of the air current. The first front-end portion includes a first tip, and the first front-end portion has a round shape.