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:
Apr. 19, 2011
Filed:
Mar. 22, 2007
Chuen-shu Hou, Taipei Hsien, TW;
Chuen-Shu Hou, Taipei Hsien, TW;
Foxconn Technology Co., Ltd., Tu-Cheng, New Taipei, TW;
Abstract
A method for manufacturing a hydrodynamic bearing with hydrodynamic pressure generating grooves comprises steps of: step: providing a substrate with a first annular protrusion and a plurality of projections formed on a periphery thereof, the projections being in a side of the first annular protrusion; step: placing the substrate in a middle of a hollow mold, then injecting a feedstock of powder and molten binder under pressure into the mold to surround the substrate, thus forming a desired bearing preform; step: separating the substrate from the bearing preform by means of catalytic debinding; step: separating the molten binder from the bearing preform; step: sintering the bearing preform to thereby form the hydrodynamic bearing.