| Patent application number | Description | Published |
|---|
| 20110002484 | ACOUSTIC TRANSDUCER - An acoustic transducer radiates a sound wave into a medium, and includes: a shaft member which extends at a center portion of the acoustic transducer; first and second cylindrical acoustic radiation plates which have a cylindrical shape, a central axis of the first and second cylindrical acoustic radiation plates agreeing with the longitudinal axis of the shaft member, the first and second cylindrical acoustic radiation plates alternately arranged in a direction of the central axis; a plurality of connection members which have a ring shape, and connect adjacent first and second acoustic radiation plates to each other; a plurality of bending vibration plates each of which connects the shaft member and one of the connection members to each other; and a plurality of vibrators which are provided on the bending plates. The first acoustic radiation plate has a sectional shape which is curved outwardly in a radial direction thereof, and the sectional shape of the first acoustic radiation plate is along a plane including the central axis. The second acoustic radiation plate has a sectional shape which is curved inwardly in a radial direction thereof, and the sectional shape of the second acoustic radiation plate is along a plane including the central axis. | 01-06-2011 |
| 20110075521 | ACOUSTIC TRANSDUCER - An acoustic transducer that enables acoustic radiation at a low frequency and that also improves efficiency of the acoustic radiation into liquid is provided. The acoustic transducer according to the present invention includes bending vibration module 7 that is formed by at least one bending oscillating body 1 that has at least one plate type piezoelectric resonator 2 and diaphragm 3, and supporting member 9 for supporting bending vibration module 7. A plurality of bending vibration modules 7 are cylindrically arranged, and supporting members 9 radially protrude from shaft 8 provided at the center of the cylindrically arranged bending vibration modules 7 and are joined with the ends of diaphragms 3 of adjoining bending vibration modules 7. | 03-31-2011 |
| 20110252880 | POWER GENERATOR, FLUID SENSOR, AND FLUID SENSOR NET - A pressure-receiving cylinder ( | 10-20-2011 |
| 20110280420 | ACOUSTIC TRANSDUCER - There is provided an acoustic transducer which is reduced in size and which can generate an acoustic emission having a low frequency. The acoustic transducer of the present invention includes: a plurality of bending vibration modules | 11-17-2011 |
| 20120161581 | ACOUSTIC TRANSDUCER - An acoustic transducer includes a ring oscillator. The ring oscillator includes: a first cushioning material; a pair of first and second annular members that are laminated in an axial direction thereof with the first cushioning material therebetween, each of the annular members having first and second ends in a circumferential direction thereof, and a notch portion formed between the first and second end; a first connecting portion that connects the first end of the first annular member and the second end of the second annular member; and a second connecting portion that connects the second end of the first annular member and the first end of the second annular member. | 06-28-2012 |
| 20120248779 | WATER CURRENT POWER GENERATING DEVICE - There is provided a water current power generating device for generating electric power from water current power, the device comprising: a sway vibrating body which bends in response to a fluid force exerted on a circumference surface thereof by a water current, sways in a bending state, and generates tension in response to a deflection angle from a direction of the water current, and at least one tension power generating unit for converting electro-magnetically or piezoelectrically the tension transferred from the sway vibrating body into the electric power. With the above configurations, ever stable electric power can be generated from water current power in a variety of water areas of slow-moving water current to fast-moving water current. | 10-04-2012 |
| 20150303702 | ELECTRIC POWER TRANSMISSION DEVICE AND ELECTRIC POWER TRANSMISSION METHOD - An electric power transmission device for wirelessly transmitting electric power in a highly conductive medium includes a power transmitting unit configured to wirelessly transmit electric power and a power receiving unit configured to intromit the wireless electric power transmitted from the power transmitting unit. The power transmitting unit and the power receiving unit include an electric power transmission coil and a containment member having a dielectric configured to cover the electric power transmission coil, and transmit the electric power by causing resonance at a frequency determined by impedance of the power transmitting unit, impedance of the power receiving unit, and impedance of the highly conductive medium. | 10-22-2015 |
| 20150378020 | MEASUREMENT APPARATUS, MEASUREMENT SYSTEM, PROGRAM AND CONTROL METHOD - The present invention provides a new art for grasping a moving direction of an underwater vehicle. In order to grasp the moving direction of the underwater vehicle, a measurement apparatus | 12-31-2015 |
