Did You Know...
...that Robert Adler has the dubious distinction of being the Father of the Couch Potato? Back in 1955 Adler was employed by what was then Zenith Radio Corp., where he was charged to invent something that would allow viewers to turn down the TV volume without leaving their chairs. After a series of flops (such as a wired contraption that people tripped over), Adler hit on the idea of using sound waves. Thus the Remote Control was born...
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| Number | Title | Issue Date |
| 7438156 | Diaphragm, spherical-shell diaphragm and electroacoustic transducer, and method of manufacturing electroacoustic transducer A diaphragm in one mode of the present invention comprises an outer shape section having a circle with one diameter, or a shape of a polygon to be inscribed in a circle with the one diameter; an inner shape section protruding in one direction with regard to a plane ... | 10/21/2008 |
| 7428946 | Suspension and electro-acoustic transducer using the suspension A suspension with a plurality of roll sections each of which has a semi-cylindrical shape from a cross-section view. The roll sections are disposed side by side based on a straight line connecting two points on an inner periphery or an outer periphery. The roll sect... | 09/30/2008 |
| 7329933 | Silicon microphone with softly constrained diaphragm A microphone sensing element and a method for making the same are disclosed. The sensing element has a diaphragm and an attached electrical lead-out arm preferably made of polysilicon that are separated by an air gap from an underlying backplate region created on a ... | 02/12/2008 |
| 7325650 | Speaker A speaker according to the present invention is equipped with a diaphragm having a central portion of a dome shape and an edge portion formed on an outer periphery thereof. Further, the speaker has also a frame attached with an outermost fringe of the edge portion a... | 02/05/2008 |
| 7306073 | Electroacoustic transducer comprising a membrane with a middle area comprising stiffening grooves A membrane (20) has a membrane axis (5) and a middle area (50), a central cup-shaped depression (52) being provided around said membrane axis (5), which depression (52) preferably has a connecting channel (53), wherei... | 12/11/2007 |
| 7177440 | Electromagnetic transducer with asymmetric diaphragm 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... | 02/13/2007 |
| 7174990 | Tangential stress reduction system in a loudspeaker suspension The invention is a suspension element having an outer edge and an inner edge. The suspension element, such as a spider or surround, varies in shape along at least a portion of the suspension element to help relieve both the radial and tangential stress placed on the... | 02/13/2007 |
| 7146021 | Whizzer cone for loudspeaker for producing uniform frequency response A speaker cone is provided that contains a base portion, and the base portion has a front end and a rear end. The front end contains a plurality of discontinuities such that a first distance from a reference point on a longitudinal axis of the base portion to a firs... | 12/05/2006 |
| 7136501 | Acoustically enhanced electro-dynamic loudspeakers An electro-dynamic loudspeaker is provided with dampening arrangements that contribute to improved acoustical properties for the electro-dynamic planar loudspeaker. The dampening arrangements include providing a frame having a curved sidewall surface for reducing st... | 11/14/2006 |
| 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 |
| 6957714 | Speaker and speaker diaphragm The speaker has a diaphragm main body 30 supported resiliently on a frame 23 via an edge portion 31 around its outer circumference, and the groove ribs 35 integrally formed in the edge portion 31, wherein a regulation member 37 | 10/25/2005 |
| 6929091 | Planar diaphragm loudspeaker and related methods A planar diaphragm loudspeaker for use in a suspended ceiling grid and related methods of manufacturing are provided. The loudspeaker includes a rectangular, planar diaphragm of polymer material sized to fill an opening of the ceiling grid. The front surface of the ... | 08/16/2005 |
| 6920230 | Electromagnetic transducer and portable communication device An electromagnetic transducer includes: a first diaphragm; a second diaphragm provided in a central portion of the first diaphragm, the second diaphragm comprising a magnetic material having a first opening in a central portion thereof; a yoke disposed so as to oppo... | 07/19/2005 |
| 6857501 | Method of forming parylene-diaphragm piezoelectric acoustic transducers A micromachined acoustic transducer comprising a parylene diaphragm piezoelectric transducer. The parylene diaphragm has far lower stiffness than the silicon nitride. The method for fabricating the parylene diaphragm acoustic transducer utilizes a prestructured disp... | 02/22/2005 |
| 6745867 | Loudspeaker drive unit A mid-frequency loudspeaker drive unit includes a substantially conical diaphragm having a forward periphery and a surround connected to and extending from the forward periphery of the diaphragm to form a substantially smooth transition from the diaphragm to the sur... | 06/08/2004 |
| 6672423 | Speaker and method of assembling the speaker In a speaker including a voice coil which is wound on a voice coil bobbin and is inserted into a magnetic circuit gap of a magnetic circuit, and a cone which is coupled to the voice coil bobbin for vibration, the cone (16) is constructed of two divided co... | 01/06/2004 |
| 6634456 | Vibrating diaphragm of false speaker structure A kind of vibrating diaphragm of false speaker structure which includes a center piece with integrated formation directly on a larger outer diameter surface layer body, a connected suspended edge provided at the side way of the surface layer body in circl... | 10/21/2003 |
| 6578661 | Speaker apparatus A speaker apparatus which can remove undesirable vibrations and can produce sounds of excellent quality of acoustic signals having high audio frequencies is presented by increasing a strength of a flat joint portion and by properly setting a mass ratio be... | 06/17/2003 |
| 6513623 | Speaker A frame (14) supporting a diaphragm (12) by its outer periphery is constructed by a connecting ring (30) and a base (28) which comprises a bottomed cylinder portion (28A) and a mounting portion (28B) which extends radially outward from the bottomed cylind... | 02/04/2003 |
| 6454046 | Synchronous dustproof cover structure for sound membrane Synchronous dustproof cover structure for sound membrane. The dustproof cover structure being made of a light and rigid material. Multiple reinforcing ribs are perpendicularly disposed on one face of the dustproof cover at equal intervals. Bottom ends of ... | 09/24/2002 |
| 6237716 | Standard-sized vibrating diaphragm speaker structure The invention herein of a standard-sized Vibrating Diaphragm speaker structure, primarily includes a stand with an enlarged opening in the front and a magnetic element in the rear, a cylinder inside a magnetic element, a spring panel sticking with a cylin... | 05/29/2001 |
| 6236733 | Loudspeaker A loudspeaker has a frame, a magnetic circuit formed on the frame, a voice coil bobbin disposed in a magnetic gap of the magnetic circuit, and a diaphragm connected to the voice coil bobbin at an inner periphery and to the frame at an outer periphery ther... | 05/22/2001 |
| 6178252 | Electroacoustic transducer comprising a diaphragm having through portions for mounting a voice coil An electroacoustic transducer (1) having a voice coil (17) and having a diaphragm (19) with an annular intermediate zone (22) for securing the voice coil (17), the intermediate zone (22) having angularly spaced-apart trough portions (29) which are each bo... | 01/23/2001 |
| 6134337 | Loudspeaker In a loudspeaker, a diaphragm is equally divided circumferentially into a plurality of regions which have the same shape with each other. Each of the divided regions is formed by a hyperbolic paraboloid. The hyperbolic paraboloid is obtained by moving a s... | 10/17/2000 |
| 6026929 | High frequency radially arcuated center speaker cone with variable thickness The present invention is directed to an improved high frequency acoustic speaker center cone, which may be located at a speaker coil tubular support, tube wherein the cone has a plurality of thin, pie-shaped segments radiating outwardly with each of the s... | 02/22/2000 |
| 5847332 | Polycarbonate-based radially arcuated speaker cone Acoustic speaker cones have a plurality of thin, pie-shaped segments radiating outwardly from their center with each of the segments having an arcuated cross-section. The cones are made of polycarbonate plastic and take the form of being convex towards th... | 12/08/1998 |
| 5256837 | Paper cone for cone type speaker A cone formed from paper such as used in speaker as a diaphragm, wherein the wing portions, which may function to reinforce the cone, are selectively arranged and extending from any point in the periphery of the larger diameter circle to any point in the ... | 10/26/1993 |
| 5195143 | Acoustical ribbon transducer loudspeaker system A loudspeaker system using ribbon transducer elements wherein the ribbon elements of the high and mid-range transducer units form a plurality of conductive circuits separated by spaces, or cuts, therebetween which have substantially smooth, undulating wav... | 03/16/1993 |
| 5103927 | Variable pattern, collapsible, directional transducer This is a highly directional floor microphone. A pair of hinged panels rest upon the floor. A compliance may be used to acoustically seal the panels to the floor. At the apex of the floor and hinge is a transducer. The hinged panels are trapezoidal in sha... | 04/14/1992 |
| 5025474 | Speaker system with image projection screen A speaker system has an acoustic diaphragm and an image projection screen provided on a surface of the diaphragm integrally therewith so as to enable the user to enjoy both realistic image on the screen and powerful sound reproduced through the diaphragm.... | 06/18/1991 |
| 4997058 | Sound transducer An improved flat sound transducer including a planar diaphragm having at least one region suited for reproduction of low frequencies and one region suited for reproduction of high frequencies wherein the frame of the flat sound transducer is used to sandw... | 03/05/1991 |
| 4903308 | Audio transducer with controlled flexibility diaphragm An improved audio transducer includes a diaphragm having a pair of cylindrically-shaped webs that provide greater bandwidth, reduced distortion and greater horizontal dispersion of sound. The audio output of the transducer is further improved by forming t... | 02/20/1990 |
| 4899390 | Thin speaker having an enclosure within an open portion and a closed portion A speaker which is thin but which is capable of providing high-fidelity reproduction and ensuring a suitable level of sound pressure even when it is brought close to a wall. A closed chamber is formed behind one part of a diaphragm mounted in an enclosure... | 02/06/1990 |
| 4881617 | Radially arcuated speaker cone The present invention is directed to an improved acoustic speaker having a cone located about a transducer wherein the cone has a plurality a thin, pie-shaped segments radiating outwardly from the transducer with each of the segments having an accuated cr... | 11/21/1989 |
| 4709392 | Dome speaker with a diaphragm having at least one elongated cut-out portion A dome speaker comprising a dome-shaped diaphragm formed of a highly rigid material such as titanium or a titanium alloy, and having at least one elongated cut-out portion which varies the rigidity of the diaphragm and prevents a dip in the anti-resonance... | 11/24/1987 |
| 4655316 | Acoustic diaphragm An acoustic diaphragm is made of metallic sheet material forming a raised pattern of the material and unraised sectors of the material. The diaphragm is of the dome-shaped variety. The raised pattern incorporates sets of raised strip elements. There is a ... | 04/07/1987 |
| 4512435 | Diaphragm for loudspeakers The present invention is directed to a diaphragm for loudspeakers which is integrally constructed through the combination of a core material being formed as a disc-shaped solid construction through the independent or series of combination of a plurality o... | 04/23/1985 |
| 4056697 | Movable diaphragm connector method flexible hinge diaphragm surround and electro-acoustic transducer with folded diaphragm with intermediate flexible portions A sound reproducing movable diaphragm utilizes a three hinge, double rigid member arrangement for connecting a movable diaphragm to a fixed member or baffle or adjacent movable diaphragm in order to decouple unwanted distortions and resonances from the sy... | 11/01/1977 |
