Gas density measuring apparatus
Abstract
Abstract APPARATUS FOR MEASURING THE DENSITY OF GAS FLOWING THROUGH AN ORIFICE IN A LINE HAVING AN ENCLOSED SAMPLE CHAMBER POSITIONED INSIDE OF THE LINE WITH ITS EXTERIOR IN CONTACT WITH THE FLOWING GAS SO THAT THE CHAMBER TEMPERATURE WILL BE MAINTAINED AT THE TEMPERATURE OF THE FLOWING GAS, AN INLET LINE SUPPLYING A SAMPLE OF GAS TO BE MEASURED FROM THE LINE ON A FIRST SIDE OF THE ORIFICE TO THE SAMPLE CHAMBER AND AN OUTLET LINE HAVING A RESTRICTION THEREIN CONNECTED FROM THE SAMPLE CHAMBER TO THE LINE ON A SECOND SIDE OF THE ORIFICE THEREBY MAINTAINING THE GAS IN THE SAMPLE CHAMBER AT APPROXIMATELY THE PRES- SURE ON THE FIRST SIDE OF THE ORIFICE, AND A GAS DENSITY MEASURING INSTRUMENT IN THE SAMPLE CHAMBER. VALVES IN THE INLET AND OUTLET LINES AND A PASSAGEWAY BETWEEN THE CHAMBER AND A POINT EXTERIORLY OF THE PIPELINE FOR ISOLATING THE SAMPLE CHAMBER AND ADMITTING A CALIBRATION GAS TO THE CHAMBER FOR CALIBRATION. THE PIPELINE INCLUDING AN ENLARGED PASSAGEWAY INTO WHICH THE SAMPLE CHAMBER IS POSITIONED THEREBY AVOIDING RESTRICTING GAS FLOW THROUGH THE PIPELINE BY THE SAMPLE CHAMBER.
Inventors
- 👤 William B Banks
Bibliographic Details
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-22 | 1974-09-21 | 1975-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-22 | 1978-09-21 | 1979-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-22 | 1982-09-21 | 1983-03-23 | $7700.00 | Window Closed / Lapsed |