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Class Information
Number: 367/156
Name: Communications, electrical: acoustic wave systems and devices > Signal transducers > Underwater type > Plural transducer array > Magnetostrictive
Description: Subject matter wherein the transducers are of the magnetostrictive type.

Patents under this class:

Patent Number Title Of Patent Date Issued
8681586 Free charge carrier diffusion response transducer for sensing gradients Mar. 25, 2014
8344725 Device for nondestructive testing of pipes Jan. 1, 2013
7726193 Electromagnetic acoustic transducer with cross-talk elimination Jun. 1, 2010
7626890 Hybrid-drive multi-mode pipe projector Dec. 1, 2009
6600962 Sensor controller Jul. 29, 2003
5615172 Autonomous data transmission apparatus Mar. 25, 1997
5568448 System for transmitting a signal Oct. 22, 1996
5414397 Clamping device for magnetostrictive bodies May. 9, 1995
5357232 Magnetostrictive element Oct. 18, 1994
5355351 Underwater low-frequency sound producer using a rare earth alloy Oct. 11, 1994
5130953 Submersible electro-acoustic transducer Jul. 14, 1992
5079460 Magnetostrictive roller drive motor Jan. 7, 1992
5030873 Monopole, dipole, and quadrupole borehole seismic transducers Jul. 9, 1991
5020036 Magnetostrictive transducer for logging tool May. 28, 1991
4970464 Linear position-displacement magnetostrictive transducer having multiple cylindrical electromagnets for generating flux, each electromagnet having a centered passageway for relative travel alo Nov. 13, 1990
4907209 Low frequency sound transducer Mar. 6, 1990
4894811 Outboard-driven flextensional transducer Jan. 16, 1990
4864548 Flextensional transducer Sep. 5, 1989
4802660 Electrically controlled spring element Feb. 7, 1989
4742499 Flextensional transducer May. 3, 1988
4716556 Magnetostrictive acoustic transducer Dec. 29, 1987
4703464 Permanent magnet biased magnetostrictive transducer Oct. 27, 1987
4700803 Transducer forming compression and shear waves for use in acoustic well logging Oct. 20, 1987
4642802 Elimination of magnetic biasing using magnetostrictive materials of opposite strain Feb. 10, 1987
4636999 Magnetostrictive pulse generator Jan. 13, 1987
4541081 Electroacoustic transducer Sep. 10, 1985
4497046 Long line hydrophone Jan. 29, 1985
4482784 Position determination device Nov. 13, 1984
4438509 Transducer with tensioned-wire precompression Mar. 20, 1984
4271490 Ultrasonic detection system Jun. 2, 1981
4255800 Method and apparatus for locating underwater objects Mar. 10, 1981

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