ULTRASONIC FLUID LEVEL SENSING WITHOUT USING ASTILLWELL

(75) Inventor: Frederick Lloyd Lichtenfels, II, 2. A 3. Sa E. 2Y----OIOyd . . . . . . . . . . . . . . . . . . . . . Vergennes, VT (US) 5,036,703 A 8/1991 Eriksson ...... ... 73/290 V 5,065,624 A 11/1991 Fell .......................... 73/290 V (73) Assignee: Simmonds Precision Products, Inc., 5,335,545 A * 8/1994 Leszczynski .......... 73/290 V X Vergennes, VT (US) 5,400,376 A * 3/1995 Trudeau ............... 73/290 V X