Capacitive fluid level sensor
First Claim
Patent Images
1. A capacitor for a fluid level sensor comprising:
- first and second elongated expandable capacitor plates mounted in spaced relationship with respect to each other in a container to form a capacitor for measuring data representing the liquid in the container, said capacitor plates being continuously expandable from a first length to a second length with a given change in the shape of the container to compensate for the change in container shape, the capacitance of the expandable plates varying with the fluid and air dielectric and generating the data representing the liquid in the container.
1 Assignment
0 Petitions
Accused Products
Abstract
A capacitor for a fluid level sensor that has first and second elongated expandable capacitor plates mounted in spaced relationship with respect to each other in a container to form a capacitor for measuring data representing the liquid in the container, the capacitor plates being continuously expandable from a first length to a second length with a given change in the shape of the container. Thus, the capacitor compensates for the change in container shape.
-
Citations
34 Claims
-
1. A capacitor for a fluid level sensor comprising:
first and second elongated expandable capacitor plates mounted in spaced relationship with respect to each other in a container to form a capacitor for measuring data representing the liquid in the container, said capacitor plates being continuously expandable from a first length to a second length with a given change in the shape of the container to compensate for the change in container shape, the capacitance of the expandable plates varying with the fluid and air dielectric and generating the data representing the liquid in the container. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
-
22. A method of forming a capacitor for a fluid level sensor that measures data that accurately represents the fluid in the container comprising the steps of:
-
forming a first capacitor plate expandable in length; forming a second capacitor plate expandable in length and in spaced relationship to the first plate to form a variable capacitor; associating one end of each capacitor plate to the top the container such that said one end moves with the top of the container; and the other end of each capacitor plate with the bottom of the container to form a variable capacitor that compensates for a change in the size of the container when it is filled with fluid. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
-
Specification