Liquid dispensing apparatus and method by sensing the type of liquid vapors in the receiver
US5209275A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 1991 |
| Grant date | May 11, 1993 |
| Priority date | — |
| Expiry date | Aug 28, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/126
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a liquid dispensing apparatus which includes a detecting element for detecting the liquid from the vaporized gas surrounding the remaining liquid in a storage tank to be supplied, where the detecting element is disposed at the output end of a liquid supply line, and a discriminator for discriminating the signals and information obtained from such a detecting element. The discriminator generates a lock signal to be fed to a locking means for allowing suspension of the supply of liquid based on a signal generated in the discriminator and fed to the locking means. The detection element includes a first electrode, a second electrode, a gas-sensing member connected to the first electrode and connected to the second electrode, which gas-sensing member is formed of a resin material including a conducting material which furnishes an impedance change upon contacting the vaporized gas of the liquid to be detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.