초록 ▼

In one embodiment of the present invention, a fluid level sensor includes a resistive element and a float coupled to a contact. The float moves in response to the fluid level, causing the contact to follow a path on the resistive element. The resistive element includes a layer of resistive material

In one embodiment of the present invention, a fluid level sensor includes a resistive element and a float coupled to a contact. The float moves in response to the fluid level, causing the contact to follow a path on the resistive element. The resistive element includes a layer of resistive material disposed on an insulating substrate. The resistive element also includes a layer of conductive material disposed on the layer of resistive material. The conductive material is disposed in segments along the path followed by the contact. This embodiment of the present invention provides a high-durability fluid level sensor which further provides low electrical noise.

대표청구항 ▼

[ What is claimed is:] [1.] A sensor for measuring a level of liquid in a vessel, said sensor comprising:a resistor element having an insulating substrate;a float;a contact responsively coupled to said float and slidably biased against said resistor element, slidable movement of said contact with re

[ What is claimed is:] [1.] A sensor for measuring a level of liquid in a vessel, said sensor comprising:a resistor element having an insulating substrate;a float;a contact responsively coupled to said float and slidably biased against said resistor element, slidable movement of said contact with respect to said resistor element defining a path traveled by said contact along said resistor element;a resistive layer deposited on said insulating substrate, at least a portion of said resistive layer located along said path; andconductive segments deposited on said resistive layer along said path, said conductive segments disposed such that travel of said contact along said path will result in said contact successively contacting said segments.