Record engraving apparatus
US4597700A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 1985 |
| Grant date | Jul 1, 1986 |
| Priority date | — |
| Expiry date | Jan 11, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T409/500656
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A record engraving apparatus having a table with a vacuum source for retaining thereon a master lacquer with portions thereon having pre-recorded disc-shaped record portions. The rotatable table is precisely positionable in all directions of the plane of the table as well as in orthogonal directions, and includes provision for mounting the master lacquer with the center thereof in one of at least two locations depending on the center of the record portions relative to the master lacquer. A vertically adjustable arm is provided with a turret head having thereon a plurality of heated sapphire cutters of different sizes, each of which may be indexed into position. The arm is adjustable in a direction orthogonal to the plane of the table to provide variations in depths of cuts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.