Patent ID: 7838859

Claim:
A fluid overfill probe comprising: a cylindrical housing comprising a light metal and having a first outer diameter and a first inner diameter; a tube disposed in the cylindrical housing, the tube having an integrated prism holder, and the tube having a second outer diameter and a second inner diameter, the second outer diameter smaller than the first inner diameter of the cylindrical housing; a fluid level detector coupled to the tube that detects when fluid in a container has reached a predetermined level and generates an electrical output signal indicative thereof; and electrical circuit components that process the electrical output signal, the electrical circuit components being mounted to a printed circuit board, wherein the printed circuit board is disposed in the tube and coupled to the tube by an interference fit between the printed circuit board and an inner surface of the tube, the printed circuit board having a first thickness, a first width and a first length, wherein the printed circuit board defines a first inner space between the tube and a first side of the printed circuit board and defines a second inner space between the tube and a second side of the printed circuit board, wherein each of the first and second inner spaces is free of solid material, and wherein a space between the tube and the cylindrical housing is filled with a material to prevent the tube from moving within the housing.