Mechanical self-cleaning probe via bi-metallic or shape memory

Details Mechanical self-cleaning probe via bi-metallic or shape memory Mechanical self-cleaning probe via bi-metallic or shape memory

2007-10-02

2007-10-02

Williams, Hezron (Department: 2856)

Measuring and testing

Liquid level or depth gauge

Immersible electrode type

C073S295000, C073S29000R, C015S097100

Reexamination Certificate

active

11101179

ABSTRACT:
A conductance probe is provided for adapting in a device having a container for holding a fluid therein. The a conductance probe is installed therein for providing a conductance signal indicating whether it is in contact with the fluid. The conductance probe features a conductance probe cleaner having a temperature sensitive element arranged on a tip thereof that is responsive to a change in the temperature of the fluid, for wiping the conductance probe to keep deposits from building up thereon. The scope of the invention includes any and all bi-metal configurations using temperature changes to create probe cleaning. The device may be a boiler or other suitable device having a heating element for boiling water contained therein. The temperature sensitive element is arranged on a metal tip of the conductance probe so as to move axially when wiping the same.

REFERENCES:
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patent: 6432213 (2002-08-01), Wang et al.

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