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:
Dec. 02, 2008
Filed:
Mar. 29, 2006
Applicants:
Yan-yu Chen, Taichung, TW;
Kenny Lin, Taichung, TW;
Wen-chia Wu, Taichung, TW;
Inventors:
Assignee:
Hiwin Technologies Corp., Taichung, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16C 33/37 (2006.01);
U.S. Cl.
CPC ...
Abstract
A spacer contains a magnetic filler and is disposed between the magnetic conductive balls. The magnetic filler produces an indirect magnetic attractive force on the balls, therefore, when the interval between the two neighboring balls is overlarge, the spacer will not tip over under the effect of gravity or centrifugal force, but will be adsorbed on the balls by the magnetic filler.