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:
Nov. 26, 2002
Filed:
Jan. 25, 2002
Stephen G. Horning, Oklahoma City, OK (US);
Thomas H. Chuang, Oklahoma City, OK (US);
Tommy J. Metzner, Oklahoma City, OK (US);
Arnold G. Slezak, Yukon, OK (US);
Seagate Technology LLC, Scotts Valley, CA (US);
Abstract
Apparatus for balancing a rotary object, such as a disc drive disc pack. A balance correction member is provided as a C-shaped ring formed from a length of wire of nominally uniform cross-sectional area. The member has a substantially elliptical shape in an uncompressed state. During installation, the amount of imbalance in the disc pack is measured and a member with an appropriate length is selected and compressed to a substantially circular shape. The compressed member is then placed adjacent the disc pack so that the member expands to compressingly engage an annular recess in the disc pack. The member is preferably installed using an automated dynamic balance correction station as part of a high volume disc drive manufacturing environment.