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. 05, 2005
Filed:
May. 22, 2003
Steven Alf Hanssen, San Jose, CA (US);
Jr-yi Shen, Cupertino, CA (US);
Emmanuel N. Tatarakis, San Jose, CA (US);
Stanley Yen Wong, San Jose, CA (US);
Steven Alf Hanssen, San Jose, CA (US);
Jr-Yi Shen, Cupertino, CA (US);
Emmanuel N. Tatarakis, San Jose, CA (US);
Stanley Yen Wong, San Jose, CA (US);
Hitachi Global Storage Technologies Netherlands B.V., Amsterdam, NL;
Abstract
A disk clamp for securing disks to the hub of a spindle motor in a disk drive has symmetrically spaced apart countersunk apertures in the top surface of the disk clamp. The apertures enable the disk clamp to maintain a proper orientation before the fasteners are attached. This design overcomes issues related to rotation and displacement of the clamp while it is being fastened to the hub, and reduces the complexity of the tooling and fixtures required to complete the assembly. Less tooling complexity also allows multi-fastener driver systems to be employed so that all of the fasteners required to complete the assembly may be simultaneously attached arid driven into the disk clamp. The countersunk apertures on the disk clamp are designed to couple with tapered sleeves on the installation tool to quickly and precisely center the fasteners in the disk clamp while providing anti-rotation torque for the disk clamp.