Patent ID: 9631968
Date: 2017-04-25
CPC Classifications: B65D,G01F,G01N,G01V

Claim:
1. A fluid detector for determining a presence of a fluid, the fluid detector comprising: a container with a wall with an outer surface and an inner surface, a portion of the wall extending outwardly from the outer surface of the wall and defining a housing with a central bore with a base surface disposed proximal to the wall of the container; and a sensor assembly that outputs a first ultrasonic signal in response to an input electrical signal, the sensor assembly including a sensor element and a lens with an upper portion and a lower portion; wherein the sensor element is coupled to the upper portion of the lens so that, when the lens is disposed within the central bore of the housing such that the lens is intermediate the sensor element and the wall, the lens focuses the first ultrasonic signal toward the wall so that the first ultrasonic signal enters the wall.