Gemstone holding apparatus
US5367837A · kind A · utility
3Cited by
6References
5Claims
0Family size
Inventor
Key dates
| Filing date | Jul 15, 1993 |
| Grant date | Nov 29, 1994 |
| Priority date | — |
| Expiry date | Jul 15, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24B9/161
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
During polishing of a gemstone (30, 100, 200), a coolant is passed in heat exchange relationship with the gemstone to remove heat. This reduces the risk of temperature degradation of the gemstone. In practice, this can be achieved by passing a fluent coolant through a coolant chamber (34, 124, 214) which forms part of the apparatus that is used to hold the gemstone during polishing and which is in heat exchange relationship with the gemstone held by the apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.