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:
Jan. 10, 2012
Filed:
May. 28, 2008
Norbert A. Feliss, Aptos, CA (US);
Karl A. Flechsig, Los Gatos, CA (US);
Norbert A. Feliss, Aptos, CA (US);
Karl A. Flechsig, Los Gatos, CA (US);
Hitachi Global Storage Technologies, Netherlands B.v., Amsterdam, NL;
Abstract
A system and method for monitoring the helium content of a disk cavity of a hard disk drive is disclosed. In one embodiment of the present invention, an oxygen sensor is placed in the disk cavity to monitor the level of oxygen in the cavity. With the measurement of oxygen in the disk cavity, the level of helium in the cavity is inferred. In one embodiment, if the amount of helium inferred from the oxygen level fell below 90%-95% of the gaseous content of the disk cavity, a user is automatically notified in order to maintain the hard disk drive in a timely manner.