Fuel level gauge for use in automobile
US7520167B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 2006 |
| Grant date | Apr 21, 2009 |
| Priority date | — |
| Expiry date | Apr 21, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F23/38
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A fuel level gauge is advantageously used in a fuel tank of an automobile. The fuel level gauge installed in a fuel tank includes a float floating on the fuel surface, a rotatable member supported by a stationary member and a detector such as a Hall element. The float is connected to the rotatable member through an arm member, and the rotatable member rotates according to positions of the float. Rotational positions of the rotatable member are detected by the detector. The arm member is electrically connected through a conducting member to a ground terminal to ground electrostatic charges that are generated by abrasion between the float and the fuel and accumulated in the arm member. The conducting member slidably connects the arm member to the ground member not to disturb smooth rotation of the rotatable member. Accuracy of the fuel level detection is maintained by grounding the electrostatic charges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.