Did You Know...
...that two musicians were responsible for the invention of color print film? Fascinated by photography, Leopold Godowsky and Leopold Mannes worked together to produce an easy-to-use, practical color film. They worked full time as music teachers and gave concerts while experimenting during their off hours in Mannes' kitchen. Their success earned them full-time, well-paying jobs at Kodak and their efforts resulted in Kodachrome film, which was introduced in 1935.
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| Number | Title | Issue Date |
| 8180097 | Dynamic electro-acoustic transducer and earphone There is thus provided a dynamic electro-acoustic transducer having a moving coil (100) with a coil exit location (110) and a first and a second feed line (200, 300). The first and second feed lines (200, 300) have first ends (210, 310... | 05/15/2012 |
| 8170268 | Electro-dynamic transducer with a slim form factor In one embodiment of the present invention, an electro-dynamic transducer is disclosed including a diaphragm, a first suspension suspending the diaphragm, a coil former attached to the diaphragm, the coil former having a first, inner portion, and a second, outer por... | 05/01/2012 |
| 8155371 | Structure of a voice coil assembly A structure of a voice coil assembly includes a plate, a top board, suspending arms and fixtures. The plate has a top and two opposite sides. The top board is disposed on the top of the plate. The suspending arms extend from the two sides of the plate and are connec... | 04/10/2012 |
| 8131003 | Spring reverberator and assembling method thereof The present invention discloses a spring reverberator and an assembling method thereof, in which the spring reverberator comprises: a casing, a driving transducer received in the casing, a pickup transducer received in the casing, and coil springs vibratingly couple... | 03/06/2012 |
| 8059857 | Voice coil bobbin and speaker system A voice coil bobbin, which transmits a motive force from the voice coil wound around the bobbin to a diaphragm, includes a main part, a reinforcement part formed on the surface side of the main part, and a middle part formed between the main part and the reinforceme... | 11/15/2011 |
| 8055010 | Magnetic structure for an ironless electrodynamic-loudspeaker motor, motors and loudspeakers A magnetic structure generating a magnetic field for an ironless motor of an electrodynamic loudspeaker having a mobile coil, wherein the magnetic structure generates a magnetic field in a gap in which the coil is arranged. The magnetic structure includes of a stack... | 11/08/2011 |
| 8041071 | Diaphragm and speaker device A diaphragm and a speaker unit which can prevent generation of abnormal sound by suppressing rolling phenomenon. The speaker unit has a diaphragm. The diaphragm includes a portion for supporting a voice coil, and a sound emitting portion formed continuously to one e... | 10/18/2011 |
| 8027503 | Diaphragm for speaker device, speaker device and mobile phone A diaphragm of a speaker device, formed into an elongated configuration, has a recessed shape and includes a voice coil arrangement part extending in its longitude direction. The voice coil arrangement part has a gap with a constant width in its lateral direction an... | 09/27/2011 |
| 8009857 | Induction motor for loudspeaker An audio loudspeaker having an induction motor whose yoke components are formed of powdered iron or other material which is highly magnetically permeable and highly electrically resistive. The oscillating magnetic flux caused by the alternating current applied to th... | 08/30/2011 |
| 7995788 | Loudspeaker A leader line of a voice coil from a conductive wire part is drawn out from a part between a diaphragm coupling part and a part disposed in the magnetic gap toward a frame in a non-contact state with a diaphragm. One end side of the second edge made of an elastic bo... | 08/09/2011 |
| 7643648 | Speaker device A speaker device includes a vibration system, having a voice coil bobbin, a diaphragm, a supporting cap and a cap, and a magnetic circuit system. The inner peripheral edge portion of the diaphragm is mounted on an area in the vicinity of the upper end portion of the... | 01/05/2010 |
| 7394913 | Speakers A voice coil bobbin coupled to a damper is allowed to vibrate in its axis direction within a magnetic circuit including a magnet and a plate supported by a yoke. A range extending between a neutral position of an end of the voice coil bobbin and a portion of the yok... | 07/01/2008 |
| 7333620 | Acoustic transducer with mechanical balancing One embodiment of a low-profile transducer includes a at least one fin perpendicularly mounted on a planar diaphragm, with a voice coil mounted onto the fin. The voice coil may reside in a strong uniform magnetic field. The locations at which the diaphragm is connec... | 02/19/2008 |
| 7316289 | Electro-acoustic transducer and method of manufacturing transducer An electro-acoustic transducer includes a tone generator, a vibrator, and a case. The tone generator includes a diaphragm, and a voice coil joined to the diaphragm. The vibrator includes a magnetic circuit having a magnetic gap at which the voice coil is positioned,... | 01/08/2008 |
| 7305248 | Electronic device An electronic device, in which accommodation space for a display can be extended over the space where a speaker might be provided. A portable terminal, as an example of an electronic device, is provided with a display/speaker section, an operating section, and a mic... | 12/04/2007 |
| 7283642 | Moving-coil electrodynamic motor for a loudspeaker, loudspeaker and pole piece The invention relates to a moving-coil electrodynamic motor and a loudspeaker. A moving-coil includes a winding with a given number of turns. A motor comprises a magnet arranged between a front pole piece and a rear pole piece. The front pole piece and the rear pole... | 10/16/2007 |
| 7272237 | Audio speaker having a removable voice coil An audio speaker having a removable voice coil, which may be a part of a voice coil assembly. The voice coil may be user-removable to facilitate replacement of a damaged voice coil or reconfiguration of a speaker system. Properly positioning the voice coil assembly ... | 09/18/2007 |
| 7263199 | Microphone assembly An electromagnetic transducer is described including a magnet assembly (50) and a conductive drive coil (52). The magnet assembly provides an emanating magnetic field within which the drive coil is located. The drive coil is a flat ring coil having a w... | 08/28/2007 |
| 7245049 | Vibrator and method for manufacturing the same A vibrator of the present invention comprises a coreless coil (2), a driver (4) including a magnet (4a) inserted in the coreless coil (2), a yoke (4b) for pinching the coreless coil (2) and facing the magnet ( | 07/17/2007 |
| 7231057 | Multi-function actuator capable of preventing vibration The present invention relates to a multi-function actuator, in which a voice coil vibrates a sound-generating diaphragm in response to an audio signal. A vibration coil is placed on a central axis coaxial with the voice coil for generating vibration in response to t... | 06/12/2007 |
| 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 |
| 7177436 | Component arranged directly on a t-coil At small electric devices, such as in particular medical devices, as e.g. hearing devices, very small electric coils (1) are used. Especially with hearing devices e.g. so-called t-coils are used. Those t-coils are considered and arranged at hearing devices as... | 02/13/2007 |
| 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 |
| 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 |
| 7155028 | Voice coil mounting structure Disclosed is a voice coil mounting structure, which includes a reel, which has a first end mounted with a coil and a second end provided with equiangularly spaced female retaining portions, and a reel holder, which defines an annular space for accommodating the seco... | 12/26/2006 |
| 7146020 | Structure for the sound coil of loudspeaker An improved structure for the sound coil of loudspeaker comprises a cylinder provided with multiple layers of coils surrounding one end thereon. The coils are divided into sections in the middle position which provide more than two conducting wires. The cylinder is ... | 12/05/2006 |
| 7106879 | Loudspeaker In a loudspeaker, even if an interval between a diaphragm and a yoke is small, a lead wire, an end of the coil wire of a voice coil, moves upward and downward in and/or over a cutout portion formed in the yoke, and does not collide with the yoke. The loudspeaker doe... | 09/12/2006 |
| 7088827 | Reconfigurable speaker system A reconfigurable speaker system for producing sound in response to at least one of right and left channel audio signals generated by an audio source. The speaker system can be configured by the user to simultaneously reproduce right and left channel audio informatio... | 08/08/2006 |
| 7069787 | Robust low profile shaker An electrodynamic shaker apparatus is disclosed for providing shaking and/or vibrational motion. The shaker includes armature and stator assemblies as well as a distributed spring assembly. The shaker apparatus of the present invention is robust, supports increased ... | 07/04/2006 |
| 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 |
| 7058195 | Speaker assembly An electromagnetic transducer is described including a magnet assembly (50) and a conductive drive coil (52). The magnet assembly provides an emanating magnetic field within which the drive coil is located. The drive coil is a flat ring coil having a w... | 06/06/2006 |
| 7050601 | Voice coil of speaker A speaker is provided in which a coil wire can withstand a large amplitude motion caused by vibration of a voice coil bobbin and a diaphragm, and in which a bias of weight of the voice coil bobbin and the diaphragm caused by a constitution of the coil wire is reduce... | 05/23/2006 |
| 7031490 | 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. ... | 04/18/2006 |
| 7025170 | Speaker A speaker in which the basket holding the voice coil, cone and damper has a ribbed top flange and a ribbed bottom flange, a gasket is capped on the suspension of the cone at the ribbed top flange and fastened thereto with screws without the use of glue, and a holder... | 04/11/2006 |
| 7016515 | Speaker apparatus In an electromagnetic induction type speaker apparatus, individual constants are set in such a manner that the following formula is satisfied N×(R1×R2)1/2/(2π×L1×(1−k | 03/21/2006 |
| 7006654 | Push-pull electromagnetic transducer with increased Xmax An electromagnetic transducer such as an audio speaker, having an improved geometry in the positioning of its voice coils relative to its magnetic air gaps, facilitating a greater linear travel. The transducer has a push-pull geometry with at least two voice coils. ... | 02/28/2006 |
| 6998952 | Inductive device including bond wires An inductive device (105) is formed above a substrate (225) having a conductive coil formed around a core (109). The coil comprises segments formed from a first plurality of bond wires (113) and a second plurality of bond wires (111 | 02/14/2006 |
| 6996247 | Push-push multiple magnetic air gap transducer An electromagnetic transducer such as an audio speaker, having a push-push geometry in which there are two or more air gaps and the magnetic flux across the air gaps is in the same orientation. If there are more than one voice coil, the voice coils may thus be gener... | 02/07/2006 |
| 6993147 | Low cost broad range loudspeaker and system A loudspeaker has a diaphragm with a voice coil disposed about its perimeter and extending in a gap into which the flux of an annular rare earth magnet is focused. An opening behind the diaphragm communicates through the speaker frame. The voice coil may have two or... | 01/31/2006 |
| 6976308 | Method for conductively connecting first and second electrical conductors A method for conductively connecting first and second electrical conductors is described which consist of different materials. In carrying out the method the ends of the first and second conductors are brought into mechanical contact with each other in an overlappin... | 12/20/2005 |
