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. 22, 2009
Filed:
Aug. 08, 2008
Applicant:
Don-hua Cheng, Taichung, TW;
Inventor:
Don-Hua Cheng, Taichung, TW;
Assignee:
Hiwin Mikrosystem Corp., Taichung, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A47L 5/38 (2006.01);
U.S. Cl.
CPC ...
Abstract
A pneumatic cleaning module for a magnetic ruler of a position measurement system is combined with a displacement transducer of the position measurement system by a screw so that when the displacement transducer moves along the magnetic ruler, the pneumatic cleaning module implements a high-pressure air to remove swarf, dirt and impurities from a surface of the magnetic ruler.