Abstract: A pressure module is provided which comprises a capsule having a cavity formed therein, and a pressure transducer disposed within the cavity of the capsule. A feedthrough pin, fixedly coupled to the capsule, extends into the capsule and is electronically coupled to the pressure transducer.

Abstract: A driver and sensor assembly that is hermetically sealed so that the assemblies may be fully implanted in a being. The assemblies employ a transducer that has a longitudinal axis and that vibrates or picks up vibration in a direction substantially transverse to its longitudinal axis. A sheath covers the transducer and is hermetically sealed to a housing. Leads from a sound processor are coupled to the housing and the entire assembly is hermetically sealed.

Abstract: A sensor plate is formed as an acoustic channel on which an acoustic transducer is mounted to send ultrasonic waves along a surface of a base wall of the acoustic channel which is exposed to contaminants to be detected. An insert plate encloses the channel to protect the surface opposite the surface exposed to contaminants from the environment. Thus, dirt, moisture, installation adhesives or other materials that might degrade the performance of the sensor are prevented from contacting the backside of the plate carrying the acoustic waves. Such acoustic channel sensors are useful in applications on aircraft surfaces, road surfaces, bridge surfaces and the like for detecting ice.

Abstract: An environmentally sealed acoustic transducer that utilizes a semi-liquid, liquid or paste-like couplant material between a bottom surface of a transducer case and a structure that is to be acoustically vibrated. The transducer case fits into a chamber or well that provides a seal relative to the outer surfaces of the transducer case, and a weep or bleed passageway is provided and opens to the chamber or well. The bleed passageway permits excess couplant material to move out of the chamber through the passageway when the transducer case is inserted into the chamber or well. The bleed passageway has a seal so that the entire unit is environmentally sealed.