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:
Jul. 03, 2007
Filed:
Aug. 10, 2004
Akio Takada, Singapore, SG;
Ching Biing Yeo, Singapore, SG;
Jianmin Miao, Singapore, SG;
Sony Corporation, Tokyo, JP;
Abstract
A micro-rotating device has a rotor(of diameter not more than 1.5 cm), a shaftthreaded through the rotor, and a shaft holderfor holding the shaft. The shaft holders are formed by etching an Si substrateto form multiple shaft receiving openings. The rotors and shafts too are formed from respective Si substrates. The rotorsare located over the shaft holders, and the shafts threaded through the rotorsinto the openingsand attached there by a wafer bonding process. Then the substrateis partitioned to give individual motor elements. Protrusionsextend from the rotor in the direction towards the stator to space the rotor from the shaft holder.