Disc clamp for a disc drive
US6417988B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 12, 2000 |
| Grant date | Jul 9, 2002 |
| Priority date | — |
| Expiry date | Nov 24, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B17/0282
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus and method for securing an information storage disc within a disc drive. A disc drive spindle motor assembly including a spindle and a hub portion extending radially outward from the spindle, the hub portion defining a top surface. An information storage disc is mounted on the hub portion, the information storage disc having a top surface. The assembly further includes an annular disc clamp forming a central aperture having a middle annular raised portion, an outer annular periphery portion, and at least one inner centering portion including an inner vertical peripheral surface. The central aperture of the disc clamp is sized to receive the spindle to allow the inner centering portion to center the disc clamp about the spindle, while the outer periphery engages the top surface of the information storage disc, and the middle annular raised portion extends above the top surface of the hub portion and is adapted to receive a downwardly directed force. A disc clamp retainer applying this force is connected to the spindle. The disc clamp retainer is fastened to the spindle and engages the middle annular raised portion of the disc clamp to transmit this force through the out…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.