Design of a rigid disc plastic substrate with high stiffness insert
US6850391B1 · kind B1 · utility
3Cited by
16References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 9, 2000 |
| Grant date | Feb 1, 2005 |
| Priority date | — |
| Expiry date | Mar 9, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B33/08
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An injection molded plastic disc substrate incorporating a stiff insert made of a very stiff material (metal, ceramic, composite . . . e.g. silicon) embedded in the plastic matrix. Preferably, the insert has a circular center region and radially extending fingers. Additional features of the web may include one or more chordal connecting elements extending between the fingers. In this way, both vibration or flutter in the circumferential or radial direction is suppressed by the insert.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.