| US 7,600,423 B1 | ||
| Volume or fluid level sensing system and method | ||
| Herbert U. Fluhler, P.O. Box 22463, Huntsville, Ala. 35814 (US); and Hans Schantz, 515 Sparkman Dr., Huntsville, Ala. 35816 (US) | ||
| Filed on Oct. 24, 2007, as Appl. No. 11/977,307. | ||
| Claims priority of provisional application 60/853883, filed on Oct. 24, 2006. | ||
| Int. Cl. G01F 23/26 (2006.01) | ||
| U.S. Cl. 73—290B [73/290 R; 73/291; 73/304 R] | 20 Claims |
| 1. A fluid or gas quantity or volume sensing system comprising:
a flexible container having an interior configuration that varies as a quantity of said fluid or gas is added or removed,
or as said container is repositioned;
a coil disposed around said flexible container;
means coupled to said coil for inductance measurement of said quantity or volume as said interior configuration varies; and
a user interface for indicating to a user a measured said quantity or volume of said fluid or gas within said flexible container.
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