Fluid level detector

Details Fluid level detector Fluid level detector

2008-04-22

2008-04-22

Williams, Hezron (Department: 2856)

Measuring and testing

Liquid level or depth gauge

C073S29000R, C367S093000, C367S908000

Reexamination Certificate

active

11032976

ABSTRACT:
A fluid detector for determining a presence of a fluid within a container includes a piezoelectric element that outputs a first ultrasonic signal in response to an input electrical signal and a lens with an upper portion and a lower portion. The piezoelectric element is coupled to the upper portion of the lens so that, when the lens is disposed adjacent the outer surface of the wall such that the lens is intermediate the piezoelectric element and the wall, the lens focuses the first ultrasonic signal toward the wall so that the first ultrasonic signal enters the wall.

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