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:
Jul. 23, 2002
Filed:
Jun. 29, 2000
Hitoshi Tsujino, Fujisawa, JP;
Keiichiro Yoshida, Fujisawa, JP;
Jun Ishikawa, Yokohama, JP;
Shinichi Kimura, Fujisawa, JP;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A ramp structure for a data storage device has a load/unload ramp and a disk attached to a spindle. The ramp structure has a first rigid support structure , a second rigid support structure separated from the first rigid support structure, a bridge that connects the first rigid support structure to the second rigid support structure, and ramp units attached to the first rigid support structure. The rigid support structure has a thermal expansion coefficient selected so that the ramp-disk spacing is constant during changes in temperature. By placing the parts of the first rigid support structure and the second rigid support structure sleeve in an injection molding die and carrying out an insert molding, the ramp unit has an accurate and stable size.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile