Ultrasonic transducer
AssigneeCoherent Technologies, Inc.
InventorsJozef J. Gluszyk, Donald W. Teale
Life of this patent
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Abstract
An ultrasonic transducer having a unique design that can withstand changes in temperature and pressure and will operate in corrosive environments. The transducer is used to detect the distance to an object being measured. The device includes a diaphragm capsule from which is emitted a focused ultrasonic wave. The diaphragm capsule is machined from a single piece of metal and does not use adhesives or welded joints. The capsule is also filled with silicone oil and provided with a flexible annular ridge, both of which enhance its operation and improve signal transfer.
Claims21
An ultrasonic transducer for detecting the distance to an object, said transducer comprising:
- a diaphragm capsule defining a cavity, said capsule further comprising:
- a diaphragm for emitting an ultrasonic wave through a propagation medium;
- a flexible annular ridge surrounding said diaphragm;
- a piezoelectric crystal housed inside said cavity adjacent said diaphragm;
- a crystal positioning seal surrounding said crystal and adjacent said diaphragm capsule;
- an isolation spacer adjacent said crystal;
- an annular nut adjacent said isolation spacer;
- a diaphragm capsule nut adjacent said annular nut, said diaphragm capsule nut having a passage to said cavity and at least one connector;
- at least one wire lead electrically connecting said crystal with said connector;
- and
- a plug which seals said passage.
Dependencies are inferred from the claim text.