Transducer assembly with acoustic damping
First Claim
1. An ultrasonic transducer assembly for generating and receiving ultrasonic vibratory forces comprising:
- a unitary housing for mounting to a marine vessel, including a cavity formed therein for disposing an ultrasonic transducer;
an ultrasonic transducer disposed in the cavity comprising a transducer element having a first isolation layer on its sides and a second isolation layer on its top surface, an electrostatic shielding enclosure surrounding the top and sides of the transducer element having a third isolation layer on its outer surface; and
a layer of potting material formed between the bottom surface of the transducer element and the bottom of the housing.
1 Assignment
0 Petitions
Accused Products
Abstract
An ultrasonic transducer assembly for generating and receiving ultrasonic vibrating forces comprises an ultrasonic transducer and a unitary housing for mounting to a marine vessel. The housing has a cavity formed therein for disposing the ultrasonic transducer. An acoustic window portion transmissive to the sonic vibrating forces is formed in the bottom of the housing. The ultrasonic transducer includes a transducer element having a cork layer on its sides and inner foam layer on its top surface. A potting material such as urethane encapsulates the ultrasonic transducer in the cavity. A portion of the potting material forms a potting layer between the bottom surface of the transducer element and the acoustic window portion of the housing. The ultrasonic transducer includes an electrostatic shielding enclosure which surrounds the top and sides of the transducer element and has an outer foam layer on its outer surface to impede and attenuate unwanted transmission of ultrasonic pressure waves toward the transducer element.
43 Citations
35 Claims
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1. An ultrasonic transducer assembly for generating and receiving ultrasonic vibratory forces comprising:
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a unitary housing for mounting to a marine vessel, including a cavity formed therein for disposing an ultrasonic transducer; an ultrasonic transducer disposed in the cavity comprising a transducer element having a first isolation layer on its sides and a second isolation layer on its top surface, an electrostatic shielding enclosure surrounding the top and sides of the transducer element having a third isolation layer on its outer surface; and a layer of potting material formed between the bottom surface of the transducer element and the bottom of the housing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An ultrasonic transducer assembly for generating and receiving ultrasonic vibratory forces to and from an aqueous medium, comprising:
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a unitary housing for mounting to a marine vessel, including a cavity formed therein for disposing an ultrasonic transducer and an acoustic window portion integrally formed in the bottom of the housing; an ultrasonic transducer disposed in the cavity comprising a transducer element having a first isolation layer on its sides and a second isolation layer on its top surface; and a layer of potting material formed between the bottom surface of the transducer element and the acoustic window portion of the housing, wherein the acoustic window portion has an acoustic impedance greater than that of the potting material layer and the aqueous medium. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 33)
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24. An ultrasonic transducer assembly for generating and receiving ultrasonic vibratory forces comprising:
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a unitary housing for mounting to a marine vessel, including a cavity formed therein for disposing an ultrasonic transducer and an acoustic window portion integrally formed in the bottom of the housing; an ultrasonic transducer disposed in the cavity comprising a transducer element having a cork layer on its sides and an inner foam layer on its top surface, an electrostatic shielding enclosure surrounding the top and sides of the transducer element having an outer foam layer on its outer surface; and a layer of potting material formed between the bottom surface of the transducer element and the acoustic window portion of the housing. - View Dependent Claims (25, 26, 27, 28)
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29. A marine instrument comprising:
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a paddlewheel assembly for sensing speed; a unitary housing for mounting to a marine vessel, including a cavity formed therein for disposing an ultrasonic transducer and an acoustic window portion integrally formed in the bottom of the housing; an ultrasonic transducer disposed in the cavity comprising a transducer element having a first isolation layer on its sides and a second isolation layer on its top surface; and a layer of potting material formed between the bottom surface of the transducer element and the acoustic window portion of the housing, wherein the acoustic window portion has an acoustic impedance greater than that of the potting material layer. - View Dependent Claims (30, 31, 32, 34)
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35. An ultrasonic transducer assembly for generating and receiving ultrasonic vibratory forces comprising:
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a unitary housing for mounting to a marine vessel, including a cavity formed therein for disposing an ultrasonic transducer; an ultrasonic transducer disposed in the cavity comprising a transducer element having a first isolation layer on its sides and a second isolation layer on its top surface, a metallic enclosure surrounding the top and sides of the transducer element having a third isolation layer on its outer surface; and a layer of potting material formed between the bottom surface of the transducer element and the bottom of the housing.
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Specification