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:
Aug. 22, 1989
Filed:
Jun. 16, 1988
Michael A Cain, Oklahoma City, OK (US);
Magnetic Peripherals Inc., Minnetonka, MN (US);
Abstract
A magnetic disk memory data storage device has a unitary arm assembly mounted for rotation by an actuator for carrying the tranducers and shifting them across the disk surfaces. The assembly is subjected to varying temperature during normal operation of the device which causes differential rotation of the individual arms and consequent misalignment of them. In a design of interest, the arm nearest the deck is most affected. At least some of this misalignment can be compensated for by placing a slot in the edge of at least one arm and placing a body with a different thermal coefficient into the slot with an interference fit. If the body has a smaller thermal coefficient than the arm assembly's, the slot should be on the edge opposite the direction in which the misalignment occurs.