High pressure relief for microwave digestion vessel assembly
US5948307A · kind A · utility
17Cited by
22References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 4, 1997 |
| Grant date | Sep 7, 1999 |
| Priority date | — |
| Expiry date | Jun 4, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2219/1215
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A high pressure and temperature microwave digestion vessel assembly with enhanced safety features is disclosed. The assembly includes a membrane that is rupturable for pressure relief, and a secondary pressure relief mechanism including a seal cap with an annular stress relief region that shears or fractures when excess pressure is in the vessel interior. The membrane is positioned on a post extending from the seal cap into the inner liner. The diameter of the venting orifice may be adjusted to vary the desired pressure relief. The assembly also includes a piercing mechanism for venting the vessel after digestion is completed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.