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. 09, 2007
Filed:
Aug. 07, 2003
Hiroshi Yoshikawa, Miyota-Machi, JP;
Tomoyuki Yasuda, Miyota-Machi, JP;
Hiroshi Yoshikawa, Miyota-Machi, JP;
Tomoyuki Yasuda, Miyota-Machi, JP;
Minebea Co., Ltd., Nagano, JP;
Abstract
A method and apparatus for forming a fluid dynamic pressure groove in a fluid dynamic pressure bearing is provided. The method is accomplished by initially positioning and securing multiple workpieces to be machined to their respective machining devices. An electrochemical dissolving effect is imparted to each target surface of the multiple workpieces and then at least one fluid dynamic pressure groove is formed on each target surface of the multiple workpieces. Each groove may have a specified shape, dimension and surface condition. An electrolyte is directed from a common electrolyte tank to each of the machining devices used on the multiple workpieces.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile