| ReturnTo Theme-Group-Choice | Onelevelup |
| 5D004 | Piezo-electric transducers for audible bands | |
| H04R17/00 ;17/02;17/10 | ||
| H04R17/00;17/02;17/10 | AA | AA00 PURPOSES AND EFFECTS |
AA01 | AA02 | AA03 | AA04 | AA05 | AA06 | AA07 | AA08 | AA09 | AA10 |
| . Conversion efficiency (e.g., sensitivity and sound pressure levels) | . Frequency characteristics | . . Vibration modes | . Noise (i.e., prevention of shaking) | . Impedance conversion (i.e., matching) | . Directional characteristics | . Mechanical intensity and shock-resistance | . Flexibility (i.e., entire transducers) | . Reduction of weight and reduction of size | . Shield effects | |||
| AA11 | AA12 | AA13 | AA14 | |||||||||
| . Electric insulation | . Temperature characteristics | . Stability of movement | . Moisture-proofing, waterproofing, and corrosion-proofing | |||||||||
| BB | BB00 PIEZOELECTRIC MATERIALS |
BB01 | BB02 | BB03 | BB04 | BB05 | ||||||
| . Ceramics | . Ferroelectric single crystals | . Polymers | . Compound materials | . Transparent piezoelectric materials | ||||||||
| CC | CC00 VIBRATION CELLS AND ELEMENTS THAT ARE DIAPHRAGMS |
CC01 | CC02 | CC03 | CC04 | CC05 | CC06 | CC07 | CC08 | CC09 | CC10 | |
| . Vibration cells that are structured of single piezoelectric elements | . . Curved surfaces | . Structure of piezoelectric elements of more than three layers | . Structures using bimorphs or unimorphs | . . Joining of piezoelectric elements to non-piezoelectric boards | . . . Use of thin metallic boards | . . . Use of thin polymer boards | . Vibration elements with characteristic shapes | . . Use of wave-shaped vibration elements | . Added layers | |||
| CD | CD00 DRIVING OF SEPARATE DIAPHRAGMS USING VIBRATION ELEMENTS |
CD01 | CD02 | CD03 | CD04 | CD05 | CD06 | CD07 | CD08 | CD09 | CD10 | |
| . Joining of elements and diaphragms | . . Joining the diaphragm to the center of the element | . . Joining the diaphragm to the periphery of the element | . Shapes of diaphragms | . . Cones | . . Domes | . . Planes | . Diaphragms with characteristic structures | . . Additional layers | . Joining of vibration elements to non-piezoelectric diaphragms | |||
| DD | DD00 USES |
DD01 | DD02 | DD03 | DD04 | DD05 | DD06 | DD07 | ||||
| . Radio transmitters | . Radio receivers | . . Microphones | . . Pick-ups for vibration detection | . Resonance | . . Resonance means | . . . Resonance spaces | ||||||
| EE | EE00 MULTIPLE VIBRATION ELEMENTS |
EE01 | ||||||||||
| . Each element has different resonance characteristics | ||||||||||||
| FF | FF00 DETAILS |
FF01 | FF02 | FF03 | FF04 | FF05 | FF06 | FF07 | FF08 | FF09 | FF10 | |
| . Electrodes | . . Divided electrodes | . . Feedback electrodes | . Electrical connection to electrodes | . . Lead wire draw-out units | . Adhesion of piezoelectric bodies | . Casings and arrangements thereof | . . Support of vibration elements | . . Support of diaphragms | . . Mounting of circuit elements | GG | GG00 MANUFACTURING METHODS |
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