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:
Jun. 17, 2003
Filed:
Feb. 12, 2001
Applicant:
Inventor:
Roger Allen Addy, Gilroy, CA (US);
Assignee:
Seagate Technology LLC, Scotts Valley, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23B 1/00 ; B23B 3/00 ;
U.S. Cl.
CPC ...
B23B 1/00 ; B23B 3/00 ;
Abstract
An improved hydrodynamic bearing design and method for fabricating a hydrodynamic bearing is disclosed, which incorporates a filling groove so that oil or other lubricating fluid can be efficiently inserted into the bearing gap without risking the loss of fluid during operation; the method provides for fabricating the hydrodynamic bearing and its oil filling groove so that the efficiency of the manufacturing process is not compromised. The same grooving tool which forms the hydrodynamic bearing is scraped across an abutment on the sleeve which supports the counterplate to form a shallow filling groove under the counterplate.