Donald W Teale

US Patent:

59629525, Oct 5, 1999

Filed:

Nov 1, 1996

Appl. No.:

8/742706

Inventors:

Jozef J. Gluszyk - Houston TX
Donald W. Teale - Seabrook TX

Assignee:

Coherent Technologies, Inc. - Sugar Land TX

International Classification:

H01L 41053

US Classification:

310324

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.

US Patent:

62461540, Jun 12, 2001

Filed:

Mar 11, 1999

Appl. No.:

9/267466

Inventors:

Jozef J. Gluszyk - Houston TX
Donald W. Teale - Seabrook TX

Assignee:

Coherent Technologies - Sugar Land TX

International Classification:

H01L 41053

US Classification:

310324

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 from which is emitted a focused ultrasonic wave. The diaphragm and a capsule housing are machined from a single piece of metal and does not use adhesives or welded joints. The capsule housing is also filled with silicone oil and provided with a flexible annular ridge, both of which enhance its operation and improve signal transfer. A crystal centering seal extends 75%-90% the thickness of the crystal. A method for creating a negative internal pressure provides for improved ultrasonic wave propagation.