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:
Nov. 17, 2020
Filed:
Oct. 29, 2018
Seagate Technology Llc, Cupertino, CA (US);
Xiong Liu, Singapore, SG;
Lihong Zhang, Singapore, SG;
Seagate Technology LLC, Fremont, CA (US);
Abstract
Provided herein is an apparatus including a disk drive base, wherein the disk drive base includes a first metal composition with a first CTE ('coefficient of thermal expansion'). A disk drive cover is attached to the disk drive base, wherein the disk drive cover includes a second metal composition with a second CTE that are different from the first metal composition and the first CTE. An arm is connected to a reader and a writer, wherein the arm is coupled to the disk drive base, the reader and the writer are separated by a distance, and the distance affects an MR ('magnetoresistive') offset. In response to temperature changes between 0° C. and 60° C., the first material and the second material expand and contract comparably and proportionally. In further response to the temperature changes between 0° C. and 60° C., a change in the MR offset is less than 10% or a preferably defined range of a track pitch on a recording medium attached to the disk drive base.