Calculation of remaining usage time of a gas cylinder
US11268656B2 · kind B2 · utility
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17Claims
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Key dates
| Filing date | Jan 20, 2017 |
| Grant date | Mar 8, 2022 |
| Priority date | — |
| Expiry date | Jul 11, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF17C2270/025
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method for calculating the remaining usage time of a gas cylinder equipped with a pressure reducer, the method comprising the following steps: (a) measuring the pressure of the gas in the cylin-der; (b) calculating the variation of pressure of the gas in the cylinder over time while gas is out-putted; (c) calculating a remaining usage time Tr based on the measured pressure in the cylinder and the calculated variation of pressure. Step (c) takes into account characteristics of the pressure reducer relative to variations of its nominal flow rate along the decrease of its inlet pressure while emptying the cylinder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.