A disc mounting system for mounting the discs of a disc drive in a fixed radial relationship to the hub of a spindle motor. The disc mounting system includes curved spring elements, having a substantially C-shaped cross section, which are curved on a radius greater than the radius of the central opening...http://www.google.com.tw/patents/US6724567?utm_source=gb-gplus-share專利 US6724567 - Radially loaded disc mounting system for a disc drive
