Vent filter with direct sample capability
US6395050B1 · kind B1 · utility
9Cited by
7References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 5, 2000 |
| Grant date | May 28, 2002 |
| Priority date | — |
| Expiry date | Oct 5, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2259/4583
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Vent filters for containers such as barrels which contain hazardous waste, such as transuranic (nuclear) waste, include a bore therethrough which does not intersect the material of carbon-to-carbon filter media inserts disposed within the vent filter. Each of the bores has a stainless steel tube disposed therein wherein the stainless steel tube has at an interior end a septa-type seal and at an outer end an impenetrable plug. In order to sample head gases, a syringe is used with a needle that penetrates the septa-type seal. After the needle is withdrawn, the septa-type seal closes and the impenetrable plug is replaced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.