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. 04, 2006
Filed:
May. 20, 2002
John Frederick Runyon, St. Paul, MN (US);
Mark August Toffle, St. Louis Park, MN (US);
Brent Melvin Weichelt, Burnsville, MN (US);
John Frederick Runyon, St. Paul, MN (US);
Mark August Toffle, St. Louis Park, MN (US);
Brent Melvin Weichelt, Burnsville, MN (US);
Seagate Technology LLC, Scotts Valley, CA (US);
Abstract
A method and apparatus for transducer position detection uses inert contact surfaces to engage an actuator temporarily. The inert contact surfaces are part of an apparatus that also includes an optical sensor such as a retroreflector or diffraction grating. The assembly is thus configured to permit multiple uses while exerting a near-zero net torque about the length of the arm that supports the transducer. This is useful where there is a temporary need for especially precise position control, such as when servowriting a data storage media surface.