Patent ID: 6555837
Filing Date: 2003-04-29
Classification: G01F,G02B,Y10S

Abstract:
A fluid overfill detection probe comprising:a light source which emits an optical signal; a photodetector which detects the optical signal; a prism into which the optical signal is coupled by the light source, the prism comprising a fluoropolymer material that results in an internal reflection of the optical signal from the light source toward the photodetector when a surface of the prism at which said reflection occurs is not contacted by a fluid being detected, and that does not result in said internal reflection when said prism surface is contacted by said fluid, the prism having an outwardly extending portion; and a housing surrounding the prism and forming a fluid seal with the outwardly extending portion, the housing being connectable to the prism such that the outwardly extending portion is compressed between multiple surfaces.