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.

Date of Patent:
May. 03, 2005

Filed:

Mar. 06, 2002
Applicants:

Michael William Pfeiffer, Savage, MN (US);

James John Stirn, Savage, MN (US);

Richard Gordon Goodrich, Lakeville, MN (US);

Inventors:

Michael William Pfeiffer, Savage, MN (US);

James John Stirn, Savage, MN (US);

Richard Gordon Goodrich, Lakeville, MN (US);

Assignee:

Seagate Technology LLC, Scotts Valley, CA (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N021/86 ; G01V008/00 ;
U.S. Cl.
CPC ...
Abstract

The present invention allows placement of a disc at an angular orientation by marking the disc with an index mark or feature that can be detected, such as by a disc stacking machine used in a servo track writer. Either index is used to rotate the disc to the angular position. The present invention includes marking a disc surface with a mark or feature. An apparatus, such a stacking machine, will read the mark or feature to orient the disc in an angular position. The stacking machine will stack the positioned discs for servo track writing.


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