Patent · US Expired

Liquid-level transmitter with bell jar housing for gasoline tanks

US4532491A · kind A · utility

36Cited by

8References

20Claims

0Family size

Assignee

VDO Adolf Schindling AG · DE

Inventors

Karl Rau · Ettlingen, DE
Martin Haub · Winchester, US

Key dates

Filing date	Sep 27, 1982
Grant date	Jul 30, 1985
Priority date	—
Expiry date	Sep 27, 2002

Classification

Technology area (CPC G)Physics
CPC primaryG01F23/36
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

In a liquid-level transmitter having a swingable support lever (3) which bears a float (7) and a variable electrical resistor (9) actuated thereby, the variable resistor (9) is surrounded by a bell-shaped structural part (1) which is open towards the bottom but otherwise closed. In this way, as in the case of a diving bell, no liquid can enter into the bell-shaped structural part (1) when the level of the liquid rises above the height of the liquid-level transmitter, so that parts of the variable resistor are protected in simple fashion from corrosion due to contact with the liquid to be measured.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.