Level measuring device with an armless float
US5524487A · kind A · utility
Inventor
Key dates
| Filing date | Apr 19, 1994 |
| Grant date | Jun 11, 1996 |
| Priority date | — |
| Expiry date | Apr 19, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F23/76
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An improved liquid level measuring device with an armless float which is equipped with a pair of symmetric multi-point contact arms hidden inside the armless float so as to protect the same from being damaged in mounting. The present liquid level measuring device has a circuit including two portions each of which is disposed on one side of the sliding pole of the liquid level measuring device, permitting the reduction of the size of the same. A plurality of liquid discharge ditches which can be defined in any form are disposed on each portion of the circuit path for easy expelling of liquid particles adhered on the surface thereof. The multi-point contact arms can scrape off insulating oxydized coatings on the circuit paths in repeated sliding operation thereof so as to permit the contact between the arms and the paths constantly in an effective manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.