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:
Sep. 03, 1996
Filed:
Dec. 16, 1994
Applicant:
Inventors:
Yufeng Li, Eden Prairie, MN (US);
Peter R Goglia, Edina, MN (US);
Assignee:
Seagate Technology, Inc., Scotts Valley, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01J / ;
U.S. Cl.
CPC ...
356243 ; 356357 ;
Abstract
The present invention provides a calibration standard for the uniform calibration of flying height testers. The calibration standard comprises a head assembly held in contact with a transparent disc through the use of a load spring. The transparent disc has a plurality of grooves formed in a surface facing the head assembly. A cover case is attached to the glass disc at one end and provides a sealed environment for the interface between the head assembly and the transparent disc.