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. 19, 1989
Filed:
Apr. 13, 1987
Applicant:
Inventor:
Jorgen Frandsen, Winnipeg, CA;
Assignee:
Unisys Corporation (Formerly Burroughs Corp), Detroit, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K / ; H02K / ;
U.S. Cl.
CPC ...
310 12 ; 310 14 ; 360106 ;
Abstract
A linear actuator for reciprocating a read/write head mechanism relative to a magnetic disk storage system, including a second, supplemental solenoid coil and associated magnet pole in addition to the usual arrangement, by way of improving linearity and efficiency. A low reluctance end cap connects the magnet poles to a central coke.