Instrument calibrating demand flow regulator
US5665894A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 1, 1996 |
| Grant date | Sep 9, 1997 |
| Priority date | — |
| Expiry date | Mar 1, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/88062
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An instrument calibrating demand flow regulator for providing a demanded amount of calibration gas from a calibration gas source to an instrument to be calibrated to permit calibration of the instrument includes a housing having an interior, an inlet for connection to the calibration gas source and an outlet for connection to the instrument to be calibrated. A pressure regulating valve device positioned within the interior of the housing regulates the pressure of the calibrated gas entering the interior of the housing through the inlet and a demand flow valve device delivers calibration gas to the outlet of the housing upon demand by a pump operatively associated with the instrument.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.