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WO/1993/014608A1 |
A method of making a loudspeaker cone and surround assembly comprises clamping at least the outer marginal edge of a cone in a mould having a cavity defining a surround and injecting an elastomeric material into the cavity through an ann...
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WO/1993/003586A1 |
A voice coil actuator (50) includes a magnetic flux conductive material core (52, 52'), having a backplate (53) and a magnet (54), and an electrical current conductive coil (56, 56'). The core (52, 52') has a first surface (58, 58', 58''...
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WO/1992/002108A1 |
The invention relates to a method for preparing films or membranes for acoustic applications, having improved vibratory properties, characterized in that a dispersion in a liquid of at least one macropolymer, particularly of at least one...
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WO/1991/006329A1 |
Anti-infection catheter arrangement comprising a catheter which has a rigid or flexible catheter tube with a connection piece at the distal end, characterized by a filling and suction device which can be attached to the connection piece ...
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WO/1990/012658A1 |
The acoustic sensor comprises a piezoelectric film (12) mounted on a support (14) and connected electrically to electrodes (16, 18) themselves connected by electric conductors (20, 22) to a measurement device. The assembly composed of th...
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WO/1988/006832A1 |
This invention provides a condenser microphone simply constructed without using a separately provided push-up cylinder that has hitherto been used for pressing the vibration diaphragm to give a predetermined tension thereto. In this micr...
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WO/1986/003928A1 |
The method of making the diaphragm (28) includes pressing on the front face of a film (11) at spaced apart areas to deform it progressively into a series of closely-spaced generally U-shaped projections (P). A manufacturing device presse...
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WO/1986/001968A1 |
An electret sheet (25) is clamped on an apertured support (20) around the aperture (21) so that a sheet portion stretches all across the aperture. A tension-producing ring (60) is advanced against the sheet portion normal to its stretch ...
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WO/1984/001683A1 |
Diaphragm stretching apparatus to be placed in electrostatic loudspeakers, consisting of a foundation plate (e) and a hinged metal frame (d) on which a stator panel (c) is attached. In flatable rubber tubes (f) connected to each other in...
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WO/1984/000662A1 |
A transducer embodying the present invention is assembled on a discrete electrically conductive frame (100) that has been formed to provide both leads (120-140) and a backplate (110). An integrated circuit chip (200) is bonded to one of ...
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JP6693154B2 |
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JP6693941B2 |
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JPWO2018225415A1 |
A film board production method which mixes a sol gel solution of powder and a dielectric of a ferroelectric, produces a film which can operate under high temperature, and produces a film board on a substrate is proposed. On a substrate, ...
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JP2020511906A |
A sound converter (1) is provided with a functional group (2), and the functional group (2) has a diaphragm pot (6) and at least one electroacoustic transduction element (3). The sound converter (1) is provided with the housing (5). A di...
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JP6681784B2 |
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JP2020049628A |
[Subject] When forming a fixed electrode film, a MEMS element which can ease membrane stress by forming a lamination film with high adhesion nature, and its manufacturing method are provided. [Means for Solution] In order to make between...
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JP2020053925A |
[Subject] The smart speaker which has a microphone for voice reception which can input man's voice correctly, and a speaker for voice response which can utter a sound correctly is provided. [Means for Solution] A speaker cover, a speaker...
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JP6675181B2 |
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JP6672301B2 |
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JP6670947B2 |
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JP6672877B2 |
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JP6671203B2 |
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JP6670292B2 |
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JP2020036152A |
[Subject] The diaphragm which has the characteristic good as a diaphragm for speakers is provided using the material containing textiles. [Means for Solution] A opened part which opens material containing textiles, and mixing parts which...
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JP2020036151A |
[Subject] When manufacturing a diaphragm for speakers, deviation of textiles in a case of making textiles mix other materials and other materials and condensation are controlled. [Means for Solution] Opened part 20 which opens materials ...
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JP6659027B2 |
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JP6658126B2 |
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JP6657545B2 |
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JP2020031328A |
[Subject] Acoustic property and an electrical property of backing containing a lead array are raised. [Means for Solution] Backing is constituted by a plurality of laminated backing plates. Each backing plate is constituted by a lead seq...
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JP2020028946A |
[Subject] Influence of tensile stress of a supporting lamella is eased, and a MEMS element of high sensitivity is provided. [Means for Solution] Gap 13 is provided between fixed electrode 5 and supporting lamella 7, by considering it as ...
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JP6654047B2 |
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JP6645652B2 |
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JP2020025203A |
[Subject] When it has a plurality of acoustic matching layers, an ultrasonic sensor excellent in productivity is obtained by optimizing cure time of metal, adhesives of an acoustic matching layer, and adhesives of acoustic matching layer...
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JP6641723B2 |
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JP6637919B2 |
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JP6636516B2 |
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JPWO2019131375A1 |
[Subject] The back of a bumper, etc. are provided with simplicity, a sensor assembly which can be attached efficiently and certainly, and a method for attaching the same in the sensor assembly which has a vibration body. [Means for Solut...
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JP6630001B2 |
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JP6628783B2 |
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JP6628255B2 |
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JP2019216310A |
To provide a piezoelectric electro-acoustic transducer capable of obtaining excellent sound pressure characteristics when lead-free piezoelectric ceramic is used as a material of a piezoelectric body, and a manufacturing method thereof.I...
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JP2019212992A |
To provide a capacitive transducer with high power and high reliability.The capacitance transducer comprises: a first electrode 8; a first insulating film 9 provided on the first electrode; and a vibrating film 6 provided by facing the f...
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JP6618619B2 |
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JP2019208106A |
To provide a speaker capable of coaxially providing a vibration system unit and a magnetic circuit unit by positioning a voice coil at a correct axial position even when a diaphragm and a dust cap are integrally formed, and a method of a...
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JP6613875B2 |
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JP6610369B2 |
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JP2019198936A |
To provide a MEMS element having high sensitivity.This MEMS element has a slit 5 which is formed in a part of a vibration film 3 fixed to a handle substrate 1, and comprises a vibration area having a free end. The vibration area has the ...
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JP2019195496A |
To provide a low-cost array type ultrasonic probe that is superior in ultrasonic propagation characteristics.An ultrasonic probe AP of the present invention has a plurality of piezoelectric elements 22 arranged in an array form on the sa...
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JP6601973B2 |
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JP6598167B2 |
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