Liquid level sensor with conductive torsion springs

Details Liquid level sensor with conductive torsion springs Liquid level sensor with conductive torsion springs

2009-05-24

2011-12-13

Williams, Hezron E (Department: 2856)

Measuring and testing

Liquid level or depth gauge

Immersible electrode type

Reexamination Certificate

active

08074514

ABSTRACT:
An assembly with liquid level sensor probes which rotate down into a container by means of torsion springs, thereby eliminating failure to the springs due to bending. The torsion springs also act as conductors in an electric circuit without any electrical slip joints or rotating electrical contact joints which can become contaminated or oxidized and thereby interrupt electric continuity of the circuit.

REFERENCES:
patent: 4949627 (1990-08-01), Nordskog
patent: 6047630 (2000-04-01), Brown
patent: 6050175 (2000-04-01), Mirand
patent: 6227101 (2001-05-01), Rabadi
patent: 6779435 (2004-08-01), Iacobucci
patent: 7017408 (2006-03-01), Ramus
patent: 7210400 (2007-05-01), Kaminishi
patent: 2011/0011177 (2011-01-01), Hannah et al.
patent: WO 2008154698 (2008-12-01), None

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