Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 251 - 300 out of 1,389

Document Document Title
WO/2000/059262A2
The present invention consists of an improved distortion reduction cap and center pole speaker assembly and an improved method of coupling the cap to a speaker center pole. The cap includes an axial flare which is stretched over and pres...  
WO/2000/032013A1
Disclosed is an electric-acoustic transducer comprising at least one fixed coil (124) adapted to generate alternating magnetic field upon externally receiving an electrical drive signal, a frame (102) having a recessed structure for cent...  
WO/2000/027166A2
A transducer which can be integrated with a battery used in a hearing aid. The transducer can be a microphone or a loudspeaker integrated with a battery used in a hearing aid. The microphone transducer can include an electret microphone,...  
WO/1999/035883A1
A thin loudspeaker is provided that produces a superior frequency response and a diffuse acoustical pattern using magnetic drivers, acoustical plates, or a combination of magnetic drivers and acoustical plates. The invention contains a s...  
WO/1999/031932A1
A taut armature reciprocating impulse transducer (100) which typically provides a non-linear hardening spring response is adapted to provide a non-linear softening spring response by the addition of magnetic damping elements (106). Two o...  
WO/1999/022882A1
A high quality electric-mechanical-acoustic transducer used mainly in mobile phones which is not damaged and degraded in performance by drop and impact. The transducer comprises at least one suspension (14) that supports a movable sectio...  
WO/1999/003305A1
The present invention relates to a hearing aid receiver (10) having a coil (12) with a tunnel (14) therethrough, a magnetic structure (16) having a central magnetic gap (18), an armature (20), and a fluid (30, 32) with a viscosity greate...  
WO1998034320A3  
WO/1998/035530A1
A microphone having a reduced high frequency response is disclosed. The microphone comprises a housing (12), a diaphragm defining a front cavity and a back cavity, and an inlet port (20) acoustically communicating to the front cavity. Th...  
WO/1998/034320A2
An electro-dynamic inertial vibration exciter (1) for exciting a member (2) having capability to sustain and propagate input vibrational energy comprising a motor coil assembly (3, 4) having a coil (3) rigidly fixed to a tubular coil for...  
WO/1998/018293A1
A three-axis seismic vibrator (10) is provide which imparts compressional and shear wear seismic vibrations, either sequentially or simultaneously, into the Earth's surface. The seismic vibrator includes an earth-contacting baseplate (12...  
WO/1997/004618A1
An electronic driver for use with a linear and non-linear transducer includes a voltage controlled oscillator (1630) which generates an output signal (1603) in response to a frequency control signal (1625); a transducer driver (1604) whi...  
WO/1994/010817A1
This invention relates to electroacoustic transducers of the type which incorporate a reed armature. Thus a transducer (10) comprises a coil (12), magnets (13, 14), pole pieces (15, 16) and a reed armature (17), which passes through a ce...  
WO/1994/000961A1
An immersion-resistant housing adapted to receive a vibratable diaphragm spanning the interior of the housing to divide the housing into first and second chambers includes a first port communicating between the first chamber and the exte...  
WO/1992/009251A1
A communication device (10) for transmitting audio information to a user and a transducer (28) therefor are provided. The device includes processing circuitry within a compact housing (16) for converting input audio signals into transduc...  
WO/1991/010243A1
This invention relates to coil assemblies and in particular, but not exclusively, to such assemblies for acoustic transducers. Thus a transducer (10) includes a case (11) in which is located a coil (16) mounted on a flexi-circuit, which ...  
WO/1991/003914A1
An apparatus (58) for effecting a vibrating motion, comprising a housing (62 and 66), an electromagnetic device (76 and 78) attached to the housing for effecting an alternating electromagnetic field, a magnetic device (90 and 92) coupled...  
WO/1980/001428A1
An electrodynamic pick-up head has two reproduction channels (1 and 2). Each of the channels (1 and 2) comprises a single-section cylindrical coil (3 and 4) so oriented in relation to its magnet (5 and 6) that it embraces both its poles ...  
JP2020527922A
The present invention has a housing having a hollow cavity, a first sounding membrane attached to the housing and dividing the hollow cavity into a first cavity and a second cavity, and a second cavity mounted in the second cavity. A mai...  
JP6720873B2  
JP6717306B2  
JP6697145B2  
JP6664519B2  
JP6649488B2  
JP2020504511A
[Subject] The overly slim type high resolving electromagnetic loudspeaker of a bridge edge method is provided. [Means for Solution] An overly slim type high resolving electromagnetic loudspeaker of a bridge edge method of the present inv...  
JP6629460B2  
JP6625899B2  
JP6619706B2  
JP6618619B2  
JP6616095B2  
JP2019193080A
To provide a sound production device which enables improvement of rigidity of a fixed part of an armature and thereby improve shock resistance of the entire armature while maintaining vibration characteristics of the armature.A sound pro...  
JP2019193218A
To provide an electromechanical transducer, etc., that suppresses inclination relative to the center shaft of an armature and which is suitable for improving performance and reducing the size.The electromechanical transducer comprises: a...  
JP2019527525A
[Subject] A balanced armature assembly which is not subject to influence of output impedance for connection in essence is provided. [Means for Solution] A balanced armature driver assembly is provided with the 1st balanced armature drive...  
JPWO2018079113A1
Armature 32 has holding part 32a, section extending 32b, bending part 32c, and flexible region 32d. Insert flexible region 32d of armature 32 in an inside of coil 27, magnets 24 and 25 are made to counter, and holding part 32a is put on ...  
JP2019145962A
To provide a composite type earphone that realizes clear, desirable sound reproduction by enabling sound reproduction of a wide reproduction frequency band including a limit frequency higher than a conventional one, through mounting a po...  
JPWO2018131435A1
Oscillating support sheet 12 which supports diaphragm 11 and diaphragm 11 is provided in opening 6 of the frame fixed in a case. Oscillating support sheet 12 has diaphragm supporter 13 and circumference holding part 14, and inner end fac...  
JPWO2018034016A1
[Subject] In a pronouncing device which has an armature which is inserted in a coil and counters a magnet, a pronouncing device which can stabilize a sound pressure level in a high region by optimizing a yoke is provided. [Means for Solu...  
JP2019092113A
To provide a sound producing device capable of being downsized while securing stability of total harmonic distortion.The sound producing device includes: a diaphragm; an armature formed of a magnetic material; a pair of opposing magnets ...  
JPWO2017212697A1
[Subject] A diaphragm, a frame, and an oscillating support sheet are positioned with high precision, and it can paste up, and provides the manufacturing method of the pronouncing device which the flexure part between a diaphragm and a fr...  
JP6476321B2  
JP6449468B2  
JP2018538757A
Noise cover Ear set which has an acoustic filter is indicated. Noise cover Ear set which has an acoustic filter by the present invention, In order that the driver unit which generates sound, and air may let it pass and may cover external...  
JP6438867B2  
JPWO2017145521A1
It is equipped and used for people's ear and a wearable device which mainly performs an acoustic output or an input is provided. Outer case object 110 is formed in long and slender shape which fits Concha 306 formed between leg 302b for ...  
JPWO2017125976A1
[Subject] Provide balanced armature type the sound conversion device and voice response apparatus which can raise sound pressure without enlarging size. [Means for Solution] A projection type display concerning this art is provided in a ...  
JP2018152730A
To provide an electric acoustic diaphragm and electro-acoustic transducer suitable for a balanced armature type electro-acoustic transducer which is an electromagnetic driving system.Each of electric acoustic diaphragms 3a, 3b includes: ...  
JP2018125650A
To realize a technique for making a cartridge itself correspondable to balance transmission.A first coil fixing cartridge 10 includes a substantially columnar magnet 18 integrated with a cantilever 20 in the same axial direction, and arr...  
JPWO2017115521A1
[Subject] The manufacturing method of the pronouncing device as for which curvature of an armature which operates a diaphragm is made to the minimum is provided. [Means for Solution] Armature 32 is vibrated and diaphragm 11 is made to dr...  
JPWO2017047187A1
[Subject] A magnetic field generating unit and an armature can be positioned and the assembly without adjustment also provides a possible pronouncing device and a manufacturing method for the same. [Means for Solution] Magnetic field gen...  
JPWO2017047188A1
[Subject] A disposition space of a diaphragm can be secured widely enough and a pronouncing device which can stabilize for them and fix a magnetic field generating unit and an armature to a large attachment side is provided. [Means for S...  

Matches 251 - 300 out of 1,389