Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 6788799 | Speaker device and associated method for manufacturing the speaker device A speaker device and associated method for producing a speaker device that includes a voice coil and a radiant layer made of a radiant energy emissive material provided on a surface of the voice coil for suppressing the heat generated at the voice coil while simulta... | 09/07/2004 |
| 6678384 | Speaker structure A speaker structure having a simple configuration while maintaining good sound quality is disclosed. The speaker structure comprises a first speaker (20) having a first vibration plate (21), a first frame (22) for fixing the perimeter of the first vibrati... | 01/13/2004 |
| 6678385 | Compact modular in-the-ear hearing aid A modular hearing aid for arrangement in a user's ear comprises a hollow plug (1) adapted to the ear canal and having a generally irregular conical shape and an exterior opening which is covered by a faceplate (2), in which a recess (8) is formed for remo... | 01/13/2004 |
| 6671383 | Electromagnetic transducer and portable communication device An electromagnetic transducer, includes: a first diaphragm disposed in a vibratile manner; a second diaphragm provided in a central portion of the first diaphragm, the second diaphragm being formed of a magnetic material; a yoke disposed in a position opp... | 12/30/2003 |
| 6665414 | Speaker system and cooling device therefor A speaker system and a cooling device therefor is provided which is capable of effectively dissipating heat generated by a voice coil. The cooling device is formed as a unitary member having a first member having a hollow cylindrical shape which is integr... | 12/16/2003 |
| 6658129 | Passive radiator having mass elements A passive radiator includes a chassis (11) and a radiator body which is connected to the chassis and which is movable with respect to the chassis along a translation axis (T*). The radiator is capable of displacing comparatively large air volumes. The rad... | 12/02/2003 |
| 6650759 | Speaker A speaker includes a disk-shaped base. A substantially hemispherical surface vibrator is fitted into a substantially circular groove formed in the base to be bonded therein. Terminals are attached to electrodes located on both surfaces of the vibrator. Th... | 11/18/2003 |
| 6647122 | Loudspeaker drive unit The present invention relates to a compound loudspeaker. In the loudspeaker, the L.F. drive unit has a curved flexible diaphragm whose shape is determined such that it optimally controls the directivity of the compound loudspeaker to produce matched direc... | 11/11/2003 |
| 6628797 | Loudspeaker-and-pre-stressed cabinet Disclosed is an improved loudspeaker comprising a pre-stressed cabinet and a loudspeaker unit fixed to the inside of the cabinet. The cabinet comprises a hollow conical assembly including two conical bodies of high-rigidity metal, one press-fitted into th... | 09/30/2003 |
| 6628792 | Back to back mounted compound woofer with compression/bandpass loading The back to back mounted compound woofer that improves sound quality by minimizing mechanical vibrations is provided. The woofer speakers of the present invention are under compression allowing for more efficient cone motion control resulting in a lower c... | 09/30/2003 |
| 6628798 | Vibration actuator having three vibration modes In a vibration actuator using a magnetic circuit device (14), a supporting arrangement (23) elastically supports the magnetic circuit device. A coil (17) is inserted into a magnetic gap (15) of the magnetic circuit device and is supported by a vibration p... | 09/30/2003 |
| 6628800 | Electroacoustic transducer and method for manufacturing the same An electroacoustic transducer 1 is constituted by a base 24 formed of magnetic material; a magnetic core 22 formed of magnetic material and provided erectly on the base 24; a diaphragm 20 formed of magnetic material and supported with an air gap between t... | 09/30/2003 |
| 6625288 | Collapsing paraboloid dish and method A paraboloid receiving dish having a base, a receiver coupled to the base, and a plurality of petals pivotably connected to the base. The petals are moveable between an open position and a closed position with each of the positions forming a reflector hav... | 09/23/2003 |
| 6621908 | Speaker apparatus and electronic apparatus having speaker apparatus enclosed therein A speaker apparatus in which the acoustic sound is radiated by flexural oscillations of a diaphragm in the form of a panel having a substantially flat surface. The speaker apparatus includes a panel-shaped diaphragm the outer rim of which can be oscillate... | 09/16/2003 |
| 6614913 | Vehicle speaker pod A speaker pod for housing an audio speaker. The speaker pod is adapted to be installed in a channel having an effective height and a depth defined by a floor, a sidewall, and a top, such as may be found, for example, below the door-frame of a 1997-model-y... | 09/02/2003 |
| 6606391 | Filterbank structure and method for filtering and separating an information signal into different bands, particularly for audio signals in hearing aids A filterbank structure is provided which provides a flexible compromise between the conflicting goals of processing delay, filter sharpness, memory usage and band interaction. The filterbank has an adjustable number of bands and a stacking which provides ... | 08/12/2003 |
| 6590992 | Speaker device A speaker device is capable of accurately generating sound even within a high audio region, without high sound pressure even when generating a large sound. The speaker device includes a sound-producing vibrator having a vibrating body which is, for instan... | 07/08/2003 |
| 6584207 | Molded hearing aid housing A method of processing an impression of a portion of a user's ear canal that produces a flexible hearing aid housing which duplicates the shape of at least a portion of that impression. A female mold is created using the previously obtained ear impression... | 06/24/2003 |
| 6580802 | Waved/corrugated and stepped surface design for speaker box, and method of standardization of speaker box assemblies for television of different screen sizes A speaker bracket, speaker baffle, and a speaker cover are provided for standardizing speaker box assemblies for television sets having different sized speakers. A speaker box assembly includes a speaker cover having a stepped inverted surface. A speaker ... | 06/17/2003 |
| 6580799 | Keyboard comprising a loudspeaker A keyboard (40) having a bending wave loudspeaker (46) comprising an acoustic radiator capable of supporting bending waves and a transducer (48) mounted on the acoustic radiator to excite bending waves in the acoustic radiator to produce an acoustic outpu... | 06/17/2003 |
| 6580801 | Loudspeaker apparatus A loudspeaker apparatus 1 includes a loudspeaker unit 3 and an installation device 2. The loudspeaker unit 3 includes drivers 22 and 23 and an enclosure for the drivers composed of front and rear members 20 and 21. The loudspeaker unit is detachably mount... | 06/17/2003 |
| 6567527 | Elongated oval battery assembly for canal hearing device A miniature battery assembly for canal hearing devices is constructed of a cylindrically elongated metal shell having oval cross section. The elongated oval design offers superior volumetric utilization and energy capacity in the ear canal when compared w... | 05/20/2003 |
| 6563930 | Speaker A speaker has a semi-spherical vibration section and a ringed plate-like base section. The vibration section and the base section are formed as a single, unitary piezoelectric body. Driving electrodes are located on the single unitary body comprising the ... | 05/13/2003 |
| 6560348 | Contact connections The invention proposes a contact connection for sound reproduction devices according to the flexural wave principle. Since the drive systems 21 of such installations require high current intensities and such current intensities could only be properly tran... | 05/06/2003 |
| 6560344 | Miniature surface mounted directional microphone assembly The present invention relates to a motor vehicle mounted directional microphone assembly for use in hands-free cellular telecommunications. The microphone assembly is comprised of a case and a removable directional microphone module. The case is adapted t... | 05/06/2003 |
| 6556686 | Programmable hearing aid device and method for operating a programmable hearing aid device In a programmable hearing aid device, keys are provided for enabling and/or disenabling functions, performance features or programmable adjustments. Hardware keys and software keys are used in order to prevent an inexpert, defective or unauthorized usage ... | 04/29/2003 |
| 6553125 | Multiple-function convertor for converting electric signals to vibration of elements of a portable electronic instrument A vibrating plate is mounted in a case, and a first coil is secured to the vibrating plate. A magnetic circuit composition is mounted in the case. The magnetic circuit composition comprises a yoke having a flange and a core formed on the flange, an annula... | 04/22/2003 |
| 6553124 | Acoustic device An acoustic device, e.g. a loudspeaker, comprising a resonant multi-mode acoustic radiator panel having opposed faces, a vibration exciter arranged to apply bending wave vibration to the resonant panel to produce an acoustic output, a cavity enclosing at ... | 04/22/2003 |
| 6546108 | Hearing device with protruding battery assembly A hearing device system includes a hearing device having a normally open (i.e., doorless) receptacle cavity configured to accept a battery assembly for powering the hearing device. The battery assembly has an insertable segment and protruding segment, the... | 04/08/2003 |
| 6539096 | Method for producing a variable directional microphone characteristic and digital hearing aid operating according to the method A digital hearing aid with a variable directional microphone characteristic, has a signal processing unit, an earphone and at least two microphones, with a sigma-delta converter as well as a delay element following immediately thereafter in at least one m... | 03/25/2003 |
| 6526151 | High stability loudspeaker A high stability loudspeaker has a yoke with a plurality of vents installed therein. The yoke is combined to a bottom of a frame of the loudspeaker. A magnet is placed in the yoke. A washer is arranged above the magnet. A periphery of the magnet is surrou... | 02/25/2003 |
| 6522762 | Silicon-based sensor system The present invention relates solid state silicon-based condenser microphone systems suitable for batch production. The combination of the different elements forming the microphone system is more flexible compared to any other system disclosed in the prio... | 02/18/2003 |
| 6519345 | Double-functioned hand-free device for cellular telephone A double-functioned hand-free device for cellular telephone comprises a microphone casing having one end connected with a neck hanger, wherein a direct sound-receiver circuit and a circuit for sensing vibration of vocal cords are housed in the microphone ... | 02/11/2003 |
| 6519346 | Speaker apparatus and electronic apparatus having a speaker apparatus enclosed therein A speaker apparatus in which the acoustic sound is radiated by flexural oscillations of a diaphragm in the form of a panel having a substantially flat surface. The speaker apparatus includes a panel-shaped diaphragm the outer rim of which can be oscillate... | 02/11/2003 |
| 6516077 | Electroacoustic transducer A diaphragm of electroacoustic transducer has an edge formed with alternately up-rolled and down-rolled portions with respect to vibration plane of the diaphragm and disposed at regular intervals in circumferential direction and with sloped-plane portions... | 02/04/2003 |
| 6493453 | Hearing aid apparatus An improved earring-style hearing aid that includes an ear mold that renders the majority of the ear canal unfilled, and that delivers to the eardrum amplified sound that is received through a breakaway connector from a hearing aid circuit that is attache... | 12/10/2002 |
| 6490360 | Dual bi-laminate polymer audio transducer Various embodiments of low-mass sound generators each having a wide frequency band are disclosed. In some embodiments, the acoustic transducer acting as the sound generator is constructed of four layers of PVDF film. The top and bottom bi-laminate members... | 12/03/2002 |
| 6487298 | Microphone stand sound monitor The present invention provides a microphone stand mounted monitor which is closer to the performer, eliminates the use of precious floor space, uses less power, allows for a lower output volume on the stage and is adjustable in height. The microphone stan... | 11/26/2002 |
| 6477257 | Directional microphone A directional microphone includes a yoke, and a magnet and a washer disposed in the yoke. An annular cap body encloses a surrounding wall portion of the yoke, and has a plurality of first air passages extending from a front portion through a rear portion ... | 11/05/2002 |
| 6473515 | Cap and center pole apparatus and method of coupling The present invention comprises an improved center pole having a distortion reduction cap and an improved method of coupling the cap to a speaker center pole. The speaker assembly comprises a distortion reduction cap and a cylindrical center pole having a... | 10/29/2002 |