Fuel sender assembly requiring no calibration and having reduced wear
US4924704A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 30, 1989 |
| Grant date | May 15, 1990 |
| Priority date | — |
| Expiry date | May 30, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F23/36
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A fuel sender assembly using a wiper contact to generate a resistance proportional to fuel level in a fuel tank has a bent float rod engaged by a fork and a bore of a carrier element which rigidly carries a spring contact. The spring contact slidably engages a resistor on a resistor card within a housing. The carrier element extends through a slot in the housing such that it abuts the ends of the slot to provide rotational limits for the float rod. The carrier element retains the float rod such that the float rod is allowed to move over a limited distance in the direction coaxial with the portion of the float rod about which the other movable parts rotate. All other movement of the float rod, except the sweeping movement related to fuel level, are substantially prevented. Vibrational wear of the resistor card is thus avoided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.