Gas purifier having pressure responsive switch as end of life detector
US5294407A · kind A · utility
19Cited by
4References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 3, 1991 |
| Grant date | Mar 15, 1994 |
| Priority date | — |
| Expiry date | Oct 3, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S55/34
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A gas purifier for impure gas having an end of life detector. The purifier has: PA0 A. a housing; and PA0 B. an impurity-sorbing material packed within the housing. The impurity-sorbing material has the property of reacting with impurities in the impure gas. This reacting causes expansion of the impurity-sorbing material; and PA0 C. an impure gas inlet; and PA0 D. a pure gas outlet; and PA0 E. a pressure responsive electrical switch within the housing. The position of the switch is responsive to expansion of the impurity-sorbing material; and PA0 F. An indicator outside the housing to indicate the position of the switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.