US 11,808,616 B1
Acoustic array liquid level sensor
Terence John Knowles, Austin, TX (US); and Charles F Bremigan, III, Jarrell, TX (US)
Assigned to Texzec, Inc., Round Rock, TX (US)
Filed by Texzec, Inc., Round Rock, TX (US)
Filed on Apr. 14, 2023, as Appl. No. 18/301,166.
Int. Cl. G01F 23/2962 (2022.01); G01F 23/296 (2022.01)
CPC G01F 23/2962 (2013.01) [G01F 23/2968 (2013.01)] 30 Claims
OG exemplary drawing
 
1. An ultrasonic sensor for detecting a level of a liquid, the ultrasonic sensor comprising:
a substrate having a first edge and a second edge;
an acoustic array on the substrate between the first edge and the second edge;
an ultrasonic transducer on the substrate and acoustically coupled to an end of the acoustic array;
an acoustic diversion array on the substrate between the first edge and the acoustic array and running in parallel with the acoustic array; and
a liquid level sensing region on the substrate lying next to the acoustic array on a side of the acoustic array opposite the acoustic diversion array.