Measuring and testing – Liquid level or depth gauge – Float
Patent
1997-11-18
2000-02-08
Williams, Hezron
Measuring and testing
Liquid level or depth gauge
Float
338 92, G01F 2336, H01C 1008
Patent
active
060216689
ABSTRACT:
This invention includes a combustion engine fuel level indication system operable at 10 mA or lower and without any contact resistance buildup. The present system utilizes a noble metal ink formulation for both contacts of resistive path and a conductive path. The resistive and conductive paths each having angled conductor lines which reduce the overall volume requirement for the noble metal ink composition used to make the paths. The invention also includes a wiper contact having spaced apart parallel tangs or fingers positioned so that a first finger engages a first conductor line along the conductive path and a second finger engages an adjacent conductor line along the conductive path to improve the make brake contact.
REFERENCES:
patent: 4931764 (1990-06-01), Gaston
patent: 5746088 (1998-05-01), Sawert et al.
European Search Report--EP 97 20 3877 corres to USSN 08/972,290 dated Mar. 4, 1998.
Riley, "Silver-in-Glass Technology for Ruggedized Digital Encoders", Three page article from Dec. 1996 issue of Sensors magazine.
Coha Timothy Francis
Ireland Hugh Wesley
Sawert Ulf
Cichosz Vincent A.
General Motors Corporation
Williams Hezron
Worth Willie Morris
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