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President Rutherford B. Hayes ; Said in 1876, after Alexander Graham Bell demonstrated the telephone to him at the White House
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| Number | Title | Issue Date |
| 7227966 | Piezo-electric speaker A piezo-electric speaker ensures a uniform sound in a broad band and can easily reproduce a signal of large amplitude or sound. A piezo-electric speaker has a piezo-electric member to generate a vibration according to an electric signal applied thereto. A piezo-elec... | 06/05/2007 |
| 7223243 | Thin film ultrasonic transmitter/receiver A thin film piezoelectric material employs an array of metallic backer plates to provide high output, non-resonant ultrasonic transmission and reception suitable for ultrasonic measurement and/or imaging. ... | 05/29/2007 |
| 7221767 | Surface mountable transducer system The present invention relates to a surface mountable acoustic transducer system, comprising one or more transducers, a processing circuit electrically connected to the one or more transducers, and contact points arranged on an exterior surface part of the transducer... | 05/22/2007 |
| 7216417 | Method for manufacturing an electromechanical sensor element Method for manufacturing an electromechanical sensor element for converting mechanical forces produced by the movements and vital functions or a person into electric signals, in which method a sensor film (11) is provided with metallic electrodes (15,16 | 05/15/2007 |
| 7218742 | Condenser microphone assembly A microphone assembly comprising a housing, the housing including an upper lip, a silicon backplate having a top portion, a bottom portion, an annular side portion, a silicon spacer integrally formed with the backplate and comprising at least one protrusion extendin... | 05/15/2007 |
| 7213460 | Ultrasonic sensor A receiver of an ultrasonic sensor includes reception elements, each of which has a shape of a flat rectangular plate. The reception elements are arranged one-dimensionally on a plane so that the reception surfaces face the same direction and that the reception elem... | 05/08/2007 |
| 7212641 | Electromechanical acoustic liner A multi-resonator-based system responsive to acoustic waves includes at least two resonators, each including a bottom plate, side walls secured to the bottom plate, and a top plate disposed on top of the side walls. The top plate includes an orifice so that a portio... | 05/01/2007 |
| 7211923 | Rotational motion based, electrostatic power source and methods thereof A power system includes a member with two or more sections and at least one pair of electrodes. Each of the two or more sections has a stored static charge. Each of the pair of electrodes is spaced from and on substantially opposing sides of the member from the othe... | 05/01/2007 |
| 7210213 | Method for manufacturing a dynamic speaker A speaker collective substrate with component insertion hole sections and electrode sections has a plurality of speaker forming areas. An electrical speaker section, which comprises a magnetic circuit section and a vibration section, is inserted into each of the com... | 05/01/2007 |
| 7207413 | Closed loop embedded audio transmission line technology for loudspeaker enclosures and systems An acoustic impedance matching enclosure is provided having a driver loaded into a chamber buffering the throat/mouth of a closed loop transmission line. Transmission line consists of a termination member, outer and inner enclosure walls, high-density lining and thr... | 04/24/2007 |
| 7204009 | Manufacturing method of acoustic sensor The present invention relates to a semiconductor electret condenser microphone capable of being reduced in size and including an acoustic sensor 100 and a case 200 for accommodating the acoustic sensor 100, the acoustic sensor 100 has a s... | 04/17/2007 |
| 7203332 | Magnet arrangement for loudspeaker An electro-dynamic loudspeaker includes a frame, a plurality of magnets and a diaphragm. The frame includes a molded plastic body. The magnets may be molded into the frame in a determined configuration. The frame is mechanically coupled to the diaphragm such that th... | 04/10/2007 |
| 7195393 | Micro fluidic valves, agitators, and pumps and methods thereof A valve which has a structure with at least one opening and a member which has a fixed static charge and also has a first position exposing the opening and a second position sealing the opening. A method for making the valve includes providing a structure with at le... | 03/27/2007 |
| 7184563 | Electret condenser microphone A condenser microphone having a housing, a diaphragm assembly and backplate located within the housing. A spacer isolates the diaphragm assembly from the housing and spaces the diaphragm assembly from the backplate. The spacer has a first portion disposed between th... | 02/27/2007 |
| 7177434 | Stepped sound producing module A generally pyramid shaped sound module is provided that is attachable to a balloon for producing hi-fidelity sound effects. The sound module includes a piezoelectric element connected at the top of the pyramid shaped piezo amplification device. An electric circuit ... | 02/13/2007 |
| 7171012 | Microphone Affixed in intimate contact to the inside surface of a front board 10a of a conductive capsule 10 provided with a receiving sound aperture 10aa is a conductive back electrode board provided with air vent apertures 11a, | 01/30/2007 |
| 7158646 | Signal derived bias supply for electrostatic loudspeakers An electrostatic loudspeaker requires a high voltage DC bias power supply to bias the stators and diaphragms of electrostatic speakers. A self biased power supply eliminates the need for an external power supply by deriving a high voltage bias from the stator AC sig... | 01/02/2007 |
| 7158651 | Electromagnetic driver for a planar diaphragm loudspeaker The invention relates to an electromagnetic driver comprising a soft magnetic core in the form of an E with three legs and a back, an alternating field driver, magnetically coupled to the soft magnetic core, for generating an alternating magnetic field in the soft m... | 01/02/2007 |
| 7152299 | Method of assembling a loudspeaker Electro-dynamic loudspeakers typically include a diaphragm having a conductor applied to one of its surfaces. The diaphragm is secured to a frame. The conductor is connected to a power supply for providing electrical current through linear traces of the conductor th... | 12/26/2006 |
| 7152481 | Capacitive micromachined acoustic transducer A micromachined capacitive acoustic transducer including an electrode formed by a perforated plate and another electrode formed by a shallowly corrugated membrane anchored at one or more positions on the substrate which also supports the said perforated plate is des... | 12/26/2006 |
| 7142682 | Silicon-based transducer for use in hearing instruments and listening devices A silicon-based transducer assembly coupled to a movable structure in a hearing instrument. The transducer assembly includes at least one microphone chip and an ASIC having multiple integrated components such as any combination of a DSP, an A/D converter, an amplifi... | 11/28/2006 |
| 7136500 | Electret condenser microphone An electret condenser microphone includes a housing, a diaphragm disposed within the housing, first and second sound inlet ports and an acoustic resistive material disposed within the housing and in the acoustic path between the second inlet port and the diaphragm. ... | 11/14/2006 |
| 7136496 | Electret assembly for a microphone having a backplate with improved charge stability The present invention relates to a microphone that includes a housing and a diaphragm and backplate located with the housing. The housing has a sound port for receiving the sound. The diaphragm undergoes movement relative to the backplate, which it opposes, in respo... | 11/14/2006 |
| 7132307 | High performance silicon condenser microphone with perforated single crystal silicon backplate A silicon condenser microphone is described. The silicon condenser microphone of the present invention comprises a perforated backplate comprising a portion of a single crystal silicon substrate, a support structure formed on the single crystal silicon substrate, an... | 11/07/2006 |
| 7130434 | Microphone PCB with integrated filter The present invention provides a solution to the needs described above through a microphone PCB with an integrated filter. The invention provides for an electret microphone assembly. The microphone assembly includes a multilayer printed circuit board. A field effect... | 10/31/2006 |
| 7130436 | Helmet with built-in speaker system and speaker system for helmet A speaker system is installed in a helmet, and includes a pair of piezoelectric speakers, frames supporting the speakers around the peripheral edges thereof, and laminated films for protecting the piezoelectric film speakers. Each of the frames has its longer sides ... | 10/31/2006 |
| 7116036 | Energy harvesting system, apparatus and method An energy harvesting device, system and method are described. The energy harvester collects acoustic energy and transforms it into electrical energy for use by a sensor. The energy harvester utilizes a piezoelectric device, which may be encased, either wholly or par... | 10/03/2006 |
| 7116792 | Directional microphone system A second-order microphone system is constructed of two null-less first-order microphone elements. The null-less first-order microphone elements prevent the degradations that occur in performance when a second-order microphone system is used at the side of a person's... | 10/03/2006 |
| 7107665 | Method for manufacturing microphone assembly A microphone assembly comprises a microphone, a connector secured to the underside of the microphone. A gasket has a sound collecting hole and is secured on the upper surface of the microphone. ... | 09/19/2006 |
| 7106869 | Condenser microphone The present invention relates to a condenser microphone whose body can be miniaturized while keeping a property and a sound quality comparable to those of a conventional condenser microphone. The condenser microphone includes a cylindrical body, a plurality of vibra... | 09/12/2006 |
| 7095864 | Electrostatic audio loudspeakers An electrostatic transducer, such as a loudspeaker or microphone, comprises a multi-layer panel (1) incorporating an electrically insulating middle layer (2) sandwiched between first and second electrically conducting outer layers (3, 4). At lea... | 08/22/2006 |
| 7088837 | High efficiency planar magnetic transducer with angled magnet structure An acoustical speaker and planar magnetic transducer therefore wherein the transducer is provided with at least array of spaced magnets which are oriented having their pole faces at an angle with respect to a plane defining a surface of a sound producing diaphragm o... | 08/08/2006 |
| 7072479 | Capacitor microphone The present invention relates to a capacitor microphone which is characterized that even in a microphone with a small diameter such as a lavalier microphone, the noneffective electrostatic capacitance enables to be decreased and a better signal-to-noise ratio enable... | 07/04/2006 |
| 7072482 | Microphone with improved sound inlet port A microphone comprises a housing defining an inner volume and including a first exterior surface with an aperture leading to the inner volume. The microphone includes a transducing assembly within the housing for converting sound into an electrical signal. A sound i... | 07/04/2006 |
| 7063268 | Electro-active fluid cooling system Embodiments of the invention provide one or more valves in which an electroactive material acts to open or close the valves to increase efficiency of a pump, which may be a pump that uses an electroactive diaphragm to pump fluid. The valves and pump may pump fluid t... | 06/20/2006 |
| 7065224 | Microphone for a hearing aid or listening device with improved internal damping and foreign material protection A microphone and method for dampening the frequency response of the microphone by disposing a dampening frame in a rear volume of the microphone. The microphone generally includes a housing, a diaphragm, a damping frame, and a backplate. The diaphragm rests on embos... | 06/20/2006 |
| 7062055 | Elastomeric dielectric polymer film sonic actuator A sonic actuator including a multi-layer membrane having a non-metallic elastomeric dielectric polymer layer with a first surface and a second surface, a first compliant electrode layer contacting the first surface of the polymer layer, and a second compliant electr... | 06/13/2006 |
| 7062058 | Cylindrical microphone having an electret assembly in the end cover A microphone includes a separate end cover with a sound port. A diaphragm is directly attached to the end cover. The backplate is positioned within the housing against a ridge near an end of the housing. A spacer is positioned against the backplate. The diaphragm en... | 06/13/2006 |
| 7062052 | Electret condenser microphone and method of producing same An electret condenser microphone includes a casing member, a circuit board disposed in the casing member, an electrically insulating member disposed on the circuit board and having an outer surface opposing and spaced apart from the casing member, and an inner surfa... | 06/13/2006 |
| 7054458 | Holder used in the microphone unit In a microphone having a microphone body stored in a substantially cylindrical metal casing, the casing per se is formed as a ground terminal while a plus terminal is disposed in the center of a lower end surface of the microphone body. A holder is formed to have a ... | 05/30/2006 |
