Injection molded center core for a recording disc and related method of manufacture
US4941066A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 1988 |
| Grant date | Jul 10, 1990 |
| Priority date | — |
| Expiry date | May 11, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B23/0035
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A molded center core for a flexible recording disc and a related method of manufacture are provided. The disc includes a recording media sandwiched between an injection molded center core having a metal insert, and an injection molded ring. The core and ring are ultrasonically welded to hold the media in place. The method includes the steps of: injection molding a separate plastic center core with a metal insert therein; injection molding a separate plastic ring; locating the center core/insert combination in the central opening of the recording media to abut a first surface of the media; locating the molded ring on the center core to abut a second, opposite surface of the media; and permanently connecting the core and ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.