Communications – electrical: acoustic wave systems and devices – Signal transducers – Underwater type
Reexamination Certificate
2008-05-06
2008-05-06
Pihulic, Dan (Department: 3662)
Communications, electrical: acoustic wave systems and devices
Signal transducers
Underwater type
Reexamination Certificate
active
11338801
ABSTRACT:
An acoustic transducer1has a first cylindrical portion1A and a second hemispherical portion1B on which a plurality of transducer elements10a, 10bare arranged. The transducer elements on the cylindrical portion are arranged to have six nearest neighbors. The arrangement may be such that the six transducer elements surrounding a given element describe the vertices of a regular hexagon. The hexagons thus described may be aligned so that two of their sides are parallel to the axis of the cylinder. The elements on the hemispherical portion may be arranged so that some elements have five nearest neighbors and others have six (the neighboring elements describing, for example, the vertices of hexagons and pentagons respectively). An underwater sounding apparatus may be constructed using the transducer.
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“Spherical Models,” Dover Publications, Inc., Magnus J. Wenninger, Mineola, New York, Nov. 1999, pp. 79-124.
Nishimori Yasushi
Suetoshi Ryouichi
Tokuda Koji
Tokuyama Kouzo
Watanabe Ken'ichi
Birch & Stewart Kolasch & Birch, LLP
Furuno Electric Company Limited
Pihulic Dan
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