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. 26, 1984
Filed:
May. 10, 1982
Leonard N Wedman, Radford, VA (US);
Joseph A Bourque, Saratoga, CA (US);
Kollmorgen Technologies Corporation, Dallas, TX (US);
Abstract
A linear servo system including a linear motor with a moving permanent magnet the flux of which interacts with current flow through a stator winding. A position servo loop controls the position of the permanent magnet and preferably includes a position transducer located within the motor air gap. The servo system when used in combination with a disk drive preferably includes a coarse/fine positioning program to first move to the desired disk track area and to then move to the center of the disk track. The motor winding located in the air gap can be made of iron or copper clad iron to reduce the size of the effective air gap.