Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 8175319 | Interchangeable magnet loudspeaker A moving coil loudspeaker has an interchangeable magnet assembly with a plurality of interchangeable magnet segments configured to be circumferentially disposed about a voice coil within the loudspeaker. Heat sink members can be arranged in between the magnet segmen... | 05/08/2012 |
| 8150095 | Thermal management system for speaker system having vented frame for establishing air passages A thermal management system improves thermal property of the speaker system by promoting air circulation to cool the speaker system. The thermal management system includes a speaker frame, an air guide formed on the speaker frame for guiding the air, a ventilation s... | 04/03/2012 |
| 8131000 | Cooling arrangement for voice coil of speaker A cooling arrangement for voice coil of speaker is disclosed to include a first bearing cup, a second bearing cup inserted into a top opening of the first bearing cup with a top flange thereof stopped at the top side of the first bearing cup to support a voice coil ... | 03/06/2012 |
| 8059856 | Methods and apparatus for providing a heat sink for a loudspeaker A heat sink for a loudspeaker assembly includes: a housing of generally toroidal shape defining an interior portion and an exterior portion; and a plurality of fins extending from within the interior portion of the housing to, and at least partially over, the exteri... | 11/15/2011 |
| 8014555 | Self-cooling electromagnetic transducer An electromagnetic transducer includes a housing, a diaphragm, a conductive coil, and a magnetic assembly having a plurality of air passages. The coil communicates with the diaphragm such that a flexible portion of the diaphragm is movable in response to movement of... | 09/06/2011 |
| 7970160 | Speaker apparatus A speaker apparatus which does not need insertion of a stand into a speaker box, and which can prevent vibrations occurring in a speaker unit from transmitting to the speaker box by the speaker apparatus itself is provided. Within a speaker box which can be divided ... | 06/28/2011 |
| 7940951 | Silent heat dissipation device A heat dissipation device includes a hollow housing and a speaker. The hollow housing has a first opening and a second opening. The speaker is disposed at the first opening, wherein the speaker includes a diaphragm oscillating within a frequency scope the human ear ... | 05/10/2011 |
| 7936896 | Speaker apparatus According to an aspect of the invention, there is provided a speaker apparatus including: a magnetic circuit; a vibrating plate vibrated by the magnetic circuit; a speaker frame holding the magnetic circuit and the vibrating plate, and a connecting portion connectin... | 05/03/2011 |
| 7831059 | Self-cooled electro-magnetic audio transducer An electro-magnetic audio transducer that is self-cooling by inhaling and exhausting an area that is separated from the reminder of the transducer by an instantaneous decrease or increase, respectively, of the pressure within that area by the movement of a coil when... | 11/09/2010 |
| 7804976 | Radiant cooler for loudspeakers An apparatus, system, and method is disclosed for providing auxiliary heat dissipating capacity to a loudspeaker assembly. The apparatus comprises a plug that is inserted into a vent at the back of a loudspeaker assembly and extends away therefrom. The plug makes a ... | 09/28/2010 |
| 7747034 | Speaker device A speaker device includes a voice coil bobbin around which a voice coil is wound, and a connecting member mounted on an outer peripheral wall of the voice coil bobbin. Plural ventilation holes are provided on a side wall of the voice coil bobbin with constant spaces... | 06/29/2010 |
| 7724912 | Speaker assembly A speaker assembly includes a rigid, structurally stable and self supporting housing within which at least a first driver is mounted and enclosed. The housing including a first aperture formed in a first wall of the housing. The first driver includes a cone coupled ... | 05/25/2010 |
| 7715584 | Loudspeaker with air deflector An air deflector is positioned relative to the through bore in the pole piece of the motor structure of a speaker such that the flow of air entering and leaving a cavity overlying the voice coil and pole piece is directed along a flow path which passes in thermal co... | 05/11/2010 |
| 7684585 | Thermal management system for speaker system having vented frame for establishing air passages A thermal management system improves thermal property of the speaker system by promoting air circulation to cool the speaker system. The thermal management system includes a speaker frame, an air guide formed on the speaker frame for guiding the air, a ventilation s... | 03/23/2010 |
| 7634101 | Thermal management system for loudspeaker having internal heat sink and vented top plate A thermal management system promotes cooling effects of a loudspeaker. The thermal management system includes an internal heat sink having a tubular shape and mounted between a pole piece and a magnet of the loudspeaker, the internal heat sink having pleat portions ... | 12/15/2009 |
| 7574013 | Speaker The speaker has a frame, a magnetic circuit, a voice coil body and a diaphragm. The magnetic circuit is disposed inside of the frame to form a magnetic gap. The voice coil body is disposed movably in the magnetic gap. The diaphragm is coupled to the voice coil body ... | 08/11/2009 |
| 7426283 | Speaker device and heat-dissipating member An outer-radial magnetic-flux applying unit of a speaker device includes an annular main unit and at least one piece of annular sub-unit stacked atop a free end of the main unit. A heat-dissipating member composed of a material having a good thermal conductivity enc... | 09/16/2008 |
| 7388963 | Speaker apparatus A speaker apparatus includes a speaker, and a circuit to operate the speaker. The speaker apparatus further includes a speaker box having an opening to enclose a back of the speaker; a casing accommodating the speaker box combined with the speaker and the circuit th... | 06/17/2008 |
| 7357218 | Frame for speaker device and speaker device A speaker device includes a magnetic circuit system and a vibration system including a frame. The frame has a magnetic circuit housing unit housing the magnetic circuit, an outer peripheral portion arranged on an outer side thereof and having an annular shape, and p... | 04/15/2008 |
| 7349207 | Heat dissipating audio systems and methods thereof An audio system includes a housing which has at least one port, at least one speaker driver with a diaphragm located in the housing, a tube made of one or more thermally conductive materials and having at least two openings, and at least one electronic component whi... | 03/25/2008 |
| 7331420 | Frame for speaker device and speaker device A frame for a speaker device includes a magnetic circuit housing unit which houses a magnetic circuit, a substantially annular outer peripheral portion which is arranged on an outer side of the magnetic circuit housing unit, and plural arm portions which connect the... | 02/19/2008 |
| 7305750 | Method of assembling a loudspeaker A loudspeaker and method of assembly according to this invention provides for precise alignment between the frame and motor structure before they are connected to one another, and employs a fixture to form the moving assembly of the speaker, i.e. the voice coil, upp... | 12/11/2007 |
| 7272238 | Loudspeaker having cooling system A loudspeaker has a cooling system in which a pole piece has a shorting ring made of non-magnetic conductive material that stabilizes magnetic field to reduce distortion of sound and a heat dissipation plate that couples to the shorting ring to facilitate efficient ... | 09/18/2007 |
| 7236607 | Loudspeaker with a first and a second diaphragm body A loudspeaker includes a frame, a diaphragm and an electric driving arrangement for moving the diaphragm along an axis with respect to the frame. The diaphragm includes an outer conical first diaphragm body and an inner conical second diaphragm body invertedly orien... | 06/26/2007 |
| 7233681 | Electromagnetic transducer with eccentrically mounted voice coil former An electromagnetic transducer such as an audio speaker which includes an asymmetric diaphragm to deliver smooth frequency response with reduced distortion by reduction of common modes in the diaphragm. Other benefits such as asymmetric directivity patterns can be re... | 06/19/2007 |
| 7203329 | Audio speaker system employing an axi-symmetrical horn with wide dispersion angle characteristics over an extended frequency range A speaker system includes a speaker driver loaded by a horn waveguide. The speaker driver reproduces sound within an extended frequency range that includes a high frequency band between 8 kHz and 11 kHz. In the preferred embodiment, the extended frequency range incl... | 04/10/2007 |
| 7181039 | Thermal chimney equipped audio speaker cabinet A thermally conductive chimney tube extends through a loudspeaker cabinet that encloses a volume of air heated by a speaker driver. The open ends of the chimney are outside the cabinet. A column of air within the chimney is in contact with the external ambient air, ... | 02/20/2007 |
| 7177439 | Methods and apparatus for dissipating heat in a voice coil The present invention is directed to methods and apparatus for dissipating heat in a voice coil of a loudspeaker, where at least one of: a bobbin having a substantially cylindrical shaped wall member is operable to support the voice coil, and the wall member include... | 02/13/2007 |
| 7165602 | Heat sink structure The present invention provides a heat sink structure, which includes: a housing located on a material with low thermal conductivity; and a heat conductor placed inside the housing. At least one air gap is formed between the heat conductor and the housing to reduce t... | 01/23/2007 |
| 7164777 | Speaker driver with detachable motor and basket A speaker driver has a detachable motor and basket to allow attachment or separation of the motor assembly from the basket assembly. Two embodiments are disclosed, a thread-on detachable motor and a bolt-on detachable motor. ... | 01/16/2007 |
| 7151836 | Speaker apparatus and sound reproduction apparatus A speaker apparatus includes a speaker unit, a passive radiator unit, and a front baffle on which the speaker unit and the passive radiator unit are mounted to form a portion of a speaker box and a back plate. A closed front chamber is formed by the front baffle for... | 12/19/2006 |
| 7141029 | Vibratory apparatus of exercise A vibratory exercise apparatus capable of providing sufficient vertical movement force is provided that adopts a structure of a bobbin coil connected with a vibration plate employed in a magnetic gap of a magnetic circuit using a permanent magnet that can generate a... | 11/28/2006 |
| 7130441 | Speaker system having processing circuitry A weight is attached to the rear side of a magnetic circuit of a speaker unit. The tip of a boss that projects from the front side of the weight is joined to the rear side of a center pole of the magnetic circuit with a bolt. Even if reactive force that is generated... | 10/31/2006 |
| 7120270 | Audio device heat transferring An acoustic device having a heat producing device, such as an amplifier and a heat sink for transferring heat from the amplifier. The acoustic device has a cone having an inner surface, and a support structure defining a volume. The heat producing element and the he... | 10/10/2006 |
| 7120271 | Internal magnetic circuit and loudspeaker system incorporating the same An internal magnetic circuit is formed by a plate forming a pole piece, a vertically magnetized magnet attached to a bottom face of the plate, and a yoke attached to a bottom face of the magnet. A magnetic gap is formed between the plate and the yoke. The yoke inclu... | 10/10/2006 |
| 7088841 | Subwoofer A subwoofer having a novel component geometry that permits large voice coils and high efficiency heat transfer capability. The subwoofer comprises a frame having an outside and an inside, a central portion, radial heat sink fins, lower ventilation apertures, and a b... | 08/08/2006 |
| 7082208 | Speaker assembly having plural drivers A weight is attached to the rear side of a magnetic circuit of a speaker unit. The tip of a boss that projects to the front side from the weight is joined to the rear side of a center pole of the magnetic circuit with a bolt. Even if reactive force that is generated... | 07/25/2006 |
| 7079665 | Loudspeaker A loudspeaker has a magnetic circuit, a plastic frame to be coupled with the magnetic circuit, a voice coil disposed in a magnetic gap of the magnetic circuit, and a diaphragm connected with the voice coil. The frame and the magnetic circuit are coupled together by ... | 07/18/2006 |
| 7057313 | Cooling of voice coil motors A voice coil motor used, for example, in a positioning device associated with either a first object table or a second object table in which the coil is cooled with a cooling jacket in thermal contact with the coil, the cooling jacket comprising at least one channel ... | 06/06/2006 |
| 7057314 | Electromagnetic motor system capable of removing heat away from its magnetic gap An electromagnetic drive motor assembly (EDMA) has at least one bridge that extends along a radial direction to conduct heat away from the magnetic gap and towards the outer surface of the EDMA. The EDMA includes a conductive ring between a first plate and a second ... | 06/06/2006 |
