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:
Apr. 29, 2008
Filed:
Jun. 01, 2006
Nobuyuki Ishii, Kanagawa, JP;
Kazuhisa Murakami, Kanagawa, JP;
Takashi Takenaka, Kanagawa, JP;
Tomoki Hiramatsu, Kanagawa, JP;
Nobuyuki Ishii, Kanagawa, JP;
Kazuhisa Murakami, Kanagawa, JP;
Takashi Takenaka, Kanagawa, JP;
Tomoki Hiramatsu, Kanagawa, JP;
Hitachi Global Storage Technologies, Amsterdam, NL;
Abstract
Formation of wear powder caused by wear of a ramp which is attributable to mutual contact of a lift tab and the ramp is to be reduced in loading and unloading operations. In one embodiment, a spindle motor is turned on by application of power, then the temperature of a ramp is measured and it is determined whether the temperature of the ramp has reached a preset temperature (about 25° C.) or not. If the answer is negative, a heater is energized to heat the ramp for raising the temperature of the ramp. When it is detected that the temperature of the ramp has reached the preset temperature, the heating of the ramp is stopped and the execution of loading and unloading operations is permitted, then an ordinary processing is started.