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:
Nov. 05, 2002
Applicants:
Wen Chen, Singapore, SG;
You Yong Liao, Singapore, SG;
Inventors:
Wen Chen, Singapore, SG;
You Yong Liao, Singapore, SG;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A47B 85/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The disclosure provides an apparatus and method for positioning a moveable mass, such as the moveable components found in a typical XY table. The apparatus comprises driving structure producing a driving force to move the mass along an axis, which mass has a variable center of gravity position perpendicular to the axis. The driving force from the driving structure is operative to act through the center of gravity of the mass as the position of the center of gravity changes.