Patent ID: 9470566
Filing Date: 2016-10-18
CPC Classification: G01F

Claim Text:
1. An ultrasonic flow meter comprising a flow tube having a flow axis along which fluid flows when the meter is operating, the flow tube having a wall comprising an interior surface proximal the flow axis and an exterior surface distal therefrom, the flow meter further comprising: a cavity disposed in the wall, the cavity not penetrating the interior surface thereof, the cavity elongated along a direction perpendicular to the flow axis and spaced apart therefrom, the cavity having a flat interior surface portion proximal the interior surface of the flow tube and a second interior surface portion distal therefrom; a piezoelectric transducer wafer having a first of two flat surfaces bonded rigidly to the flat interior surface portion of the cavity; and an encapsulant bonding the second flat surface of the transducer wafer to the second interior surface portion of the cavity.