Liquid level gauge
US4550600A · kind A · utility
5Cited by
6References
6Claims
0Family size
Inventor
Key dates
| Filing date | Aug 8, 1983 |
| Grant date | Nov 5, 1985 |
| Priority date | — |
| Expiry date | Aug 8, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/8342
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for determining the level of a liquid in a tank comprising a manually-operated spring-loaded piston in a piston chamber, wherein the chamber is connected to the tank and a gauge. Pressing the piston causes the gauge to reach the pressure at the bottom of the tank, which is calibrated to give the height or level of the liquid in the tank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.