Liquefied gas amount measuring device
US6410864B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 18, 2000 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | Dec 21, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01G17/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A liquefied gas amount measuring device includes an electronic display, a retractable cylinder, a grip element, and a hooking lug. The retractable cylinder includes a cylinder body having a retractable rod fitted with a spring at an intermediate section thereof placed therein. One end of the retractable rod extends out of the cylinder body for suspension of the hooking lug to pull out the retractable rod so as to compress the spring in the cylinder body to generate a resilient force after release of pulling force. The other end of the retractable rod that extends out of the cylinder body has a conductive elastic plate bent therefrom at a suitable position. A detecting circuit board is erected in the cylinder corresponding to range of displacement of the elastic plate moved by the retractable rod when pulled. A plurality of detecting circuits on the circuit board are connected when pressed by the elastic plate. Signal input/output ends of the detecting circuit have a lead wire extending out of the cylinder body to the electronic display. The grip element extends horizontally from the cylinder body at a suitable position. When measuring the gas amount, the hooking lug hooks on an ear…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.