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:
Mar. 02, 1982
Filed:
Dec. 26, 1979
Applicant:
Inventor:
Jorgen Frandsen, Manitoba, CA;
Assignee:
Burroughs Corporation, Detroit, MI (US);
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ; H02K / ;
U.S. Cl.
CPC ...
360106 ; 310 13 ; 360 98 ;
Abstract
In combination with disk drive apparatus, a multi-gap flat-coil linear actuator is disclosed, being arranged to carry N like transducer means and to reciprocate these, together, into associated gaps between a respective stacked disks, the actuator being comprised of flat-coil turns on a planar substrate which is arranged to be driven vertically, up and down the stack; accessing different gap-sets, being driven between opposing magnet pole pieces, whereby when the coil turns are energized, the substrate may be caused to vertically position the multiple transducer arms.