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Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 8157049 | Trirectangular tetrahedral subwoofer In some embodiments, a tetrahedral subwoofer enclosure includes a substantially triangular first face, second face, third face, and fourth face, a first corner at an intersection of the first, second and third faces, a second corner at an intersection of the first, ... | 04/17/2012 |
| 8132642 | Speaker system Normally a speaker is used by attaching to a sealed or semi-sealed cabinet so that vibration generated at the front and the back of a diaphragm does not mutually interfere. Therefore, a certain depth and a volume are necessary, and in a limited location such as a fr... | 03/13/2012 |
| 8104569 | Speaker cabinet system A speaker cabinet includes a first surface oriented generally along a first plane and a second surface oriented generally along a second plane. The second plane is generally orthogonal to the first plane. A third surface may be positioned between the first and secon... | 01/31/2012 |
| 8083024 | Lightweight speaker enclosure A speaker enclosure having a substantially seamless rigid outer skin, a middle sound absorbing layer, and a substantially seamless inner skin results in a lightweight speaker having sound absorbing characteristics. The speaker enclosure is comprised of two basic par... | 12/27/2011 |
| 7992673 | On-wall loudspeaker and mounting apparatus An on-wall loudspeaker and mounting apparatus includes an enclosure, a loudspeaker driver mounted in the enclosure, brackets of equal length and attachable to a wall, arms of equal length pivotably attached to the brackets and pivotably attached to the enclosure, ea... | 08/09/2011 |
| 7967104 | Shippable speaker box A speaker enclosure, or enclosure, and kit with plural linearly aligned panels connected by flexible couplings are shipped in a parallel stack with all the coupled panels still coupled during shipment, plus additional panels, also stacked parallel. The flexible coup... | 06/28/2011 |
| 7967103 | Latching connection for an arrangement comprising a plurality of loudspeaker boxes hanging one above the other An attachment apparatus for forming an arrangement comprising a plurality of loudspeaker boxes hanging one above the other comprises a latching connection by means of which two loudspeaker boxes which are adjacent in the arrangement can be connected together at a pr... | 06/28/2011 |
| 7931116 | Tetrahedral loudspeaker In some embodiments, a subwoofer enclosure includes a substantially triangular first face, second face, third face, and fourth face, a first corner at an intersection of the first, second and third faces, a second corner at an intersection of the first, second and f... | 04/26/2011 |
| 7798284 | Electro-optical device and electronic apparatus An electro-optical device includes an electro-optical panel, a holding frame that holds the electro-optical panel, and a sound-production frame that is attached to the holding frame, constitutes a sound-production air space at the rear of the holding frame, and hold... | 09/21/2010 |
| 7748495 | Tubular loudspeaker Provided is an acoustic loudspeaker comprising an enclosure and at least first and second loudspeaker drivers. The enclosure comprises at least one tubular sound channel of a substantially constant inside dimension acoustically coupled to the at least first and seco... | 07/06/2010 |
| 7661508 | Lightweight speaker enclosure A speaker enclosure having a substantially seamless rigid outer skin, a middle sound absorbing layer, and a substantially seamless inner skin results in a lightweight speaker having sound absorbing characteristics. The speaker enclosure is comprised of two basic par... | 02/16/2010 |
| 7624840 | Electronic apparatus A portable computer includes a speaker device and a first casing. The speaker device includes a speaker main body and a speaker housing for housing the speaker main body. The first casing has a bottom wall. The bottom wall has swelling portion which swells outward a... | 12/01/2009 |
| 7614479 | Sound enhancement module A sound enhancement module includes a set of walls that define an enclosed chamber, an aperture in one of the walls to provide a path for audio waves to travel between the enclosed chamber and an external space and an alternative density transmission medium position... | 11/10/2009 |
| 7604090 | Circuit-unit-combined speaker apparatus Recessed section is formed in the rear surface of a speaker box body with a speaker mounted to the inner front surface of the body box. Circuit unit, such as a mixer, including operators is removably accommodated in the recessed section. There is also provided a ret... | 10/20/2009 |
| 7604091 | Asymmetric and continuously curved speaker driver enclosure to optimize audio fidelity An improved system and method for reducing standing waves and diffracted waves in speaker a driver enclosure is disclosed. The speaker driver enclosure has an interior enclosure surface, shaped such that any cross section taken of it comprises a looped, substantiall... | 10/20/2009 |
| 7575095 | Speaker A speaker includes a housing; a support assembly installed on the lower end of the housing to support the housing; at least one first speaker unit installed in the housing to reproduce a sound signal; and a second speaker unit installed in the support assembly to re... | 08/18/2009 |
| 7565949 | Flat panel display module having speaker function An image display module include a flat panel display, a sound source element disposed on a rear surface side opposite to a display observation side of the panel display, and a sound leading path through which a sound wave generated from the sound source element is l... | 07/28/2009 |
| 7503423 | Electronic apparatus A portable computer includes a speaker device and a first casing. The speaker device includes a speaker main body and a speaker housing for housing the speaker main body. The first casing has a bottom wall. The bottom wall has swelling portion which swells outward a... | 03/17/2009 |
| 7478703 | Speaker cabinet and speaker device A speaker cabinet includes a cabinet having a side board to which a speaker driver can be fixed, a substantially cylindrical tube which is inserted into the cabinet such that a vertical line passing through the center of gravity of a horizontal plane of the cabinet ... | 01/20/2009 |
| 7441630 | Multi-driver speaker system A speaker unit includes first and second drivers carried by first and second enclosures. A first linkage supports the second driver enclosure relative to the first driver enclosure and provides at least two positional degrees of freedom of movement of the second dri... | 10/28/2008 |
| 7440582 | Trim panel with integrally formed attachment member A trim panel (10) includes an integrally formed attachment member (14) for mounting an acoustic device (16), such as a loudspeaker, an exciter, a piezoelectric transducer, or the like, directly to the trim panel (10) without the need of a... | 10/21/2008 |
| 7425361 | Speaker grille, injection molding mold, and broadcast data receiving device having such speaker grille A speaker grille has a grille base, a plurality of front through holes formed on a front side of the grille base, and a plurality of back through holes formed on a back side of the grille base, each of the plurality of front through holes communicating with one of t... | 09/16/2008 |
| 7416048 | Portable terminal apparatus A portable terminal apparatus with a telephone function such as a portable telephone, for efficiently emitting a voice from a speaker from both a front face and a backside of a housing. The portable terminal has: a first cover that includes a first sound outlet for ... | 08/26/2008 |
| 7418104 | Speaker system A speaker system having a first speaker, a second speaker, and a housing having a first mounting surface to which the first speaker is mounted and a second mounting surface to which the second speaker is mounted. The first mounting surface and the second mounting su... | 08/26/2008 |
| 7415124 | Low frequency surface array A low-frequency loudspeaker system based on a dipole principle. In some implementations, the system includes an open frame rigging system and multiple subwoofers mounted in a dipole surface array configuration in the open frame rigging system to produce controlled s... | 08/19/2008 |
| 7367423 | Speaker assembly with aiming device A speaker assembly aimable relative to a remote target. The speaker assembly comprising a sound generating device configured to project sound in a sound pattern about a sound axis. A speaker aiming device is coupled to the sound generating device for use in visually... | 05/06/2008 |
| 7364009 | Loudspeaker mounting frame, loudspeaker and cabinet comprising a loudspeaker A loudspeaker mounting frame (1) for an electronic appliance has a central opening for receiving a loudspeaker membrane (24), and a plurality of through holes (11) surrounding said central opening for receiving fixing means (25). The thro... | 04/29/2008 |
| 7353907 | Speaker enclosure for a wall mounted speaker system A process and kit is provided for retro-installing a speaker enclosure for a wall mounted speaker. The process includes mounting a selected speaker surround member in a building wall between the front and back wall surfaces and between the wall studs and around the ... | 04/08/2008 |
| 7350618 | Multimedia speaker product A satellite speaker system includes a side firing low mid driver mounted in a sub-enclosure which is vented into a second sub-enclosure through an acoustic resistance vent and to a third sub-enclosure through a variable aperture second vent. The vents further serve ... | 04/01/2008 |
| 7341259 | Air seal system for loudspeaker This invention provides an air seal system for loudspeakers where it is desirable to reproduce sound accurately and efficiently without loss in sound quality. The air seal system may include a housing, a baffle, and a cord gasket positioned in a gland to form an air... | 03/11/2008 |
| 7337874 | Lightweight speaker enclosure A speaker enclosure having a substantially seamless rigid outer skin, a middle sound absorbing layer, and a substantially seamless inner skin results in a lightweight speaker having sound absorbing characteristics. The speaker enclosure is comprised of two basic par... | 03/04/2008 |
| 7334852 | Multiple configuration shelving system for displaying audio visual components A shelving system for displaying audio visual components that may be configured into multiple positions is disclosed. The system includes a base that supports a center platform disposed between right and left platforms. The center platform and the right and left pla... | 02/26/2008 |
| 7329456 | Method of fabrication of an acoustical substrate into a three dimensional product A method of forming a box-like acoustical substrate is provided. Portions of an acoustical substrate having a decorative surface are compressed to form a flange, a first compressed region, a second compressed region, and a third compressed region. First, second, cen... | 02/12/2008 |
| 7328769 | Rigging system for loudspeaker arrays A rigging system for angularly adjusting the output portions of a plurality of loudspeaker cabinets wherein each of the cabinets includes a pair of rotatably adjustable rigging disks which protrude outwardly thereof which are selectively receivable within an adjacen... | 02/12/2008 |
| 7325648 | Frame for speaker device and speaker device A frame for a speaker device has an annular outer peripheral portion. The outer peripheral portion includes plural wall portions concentrically formed. An end surface of the wall portion on an inner circumferential side of the outer peripheral portion is formed at a... | 02/05/2008 |
| 7325649 | Loudspeaker with progressively damped acoustical chamber The present invention relates to a novel acoustical chamber for enclosed loudspeakers which help direct and control sound waves within the enclosure thereby enhancing sound output. The present invention utilizes a method of progressive damping which utilizes multipl... | 02/05/2008 |
| 7296653 | Sound control apparatus A sound controlling apparatus adapted for combination with a speaker unit, comprising a stand configured to support the speaker unit, a reflecting panel or panels associated with the stand to reflect sound waves transmitted by the speaker unit, a side panel or panel... | 11/20/2007 |
| 7284638 | Loudspeaker low profile quarter wavelength transmission line and enclosure and method A speaker enclosure including a compact quarter wavelength transmission path in the shape of a closed spiral that expands radially outward from a centrally located loudspeaker mounting location. The height of the transmission path has a minimum height that is equal ... | 10/23/2007 |
| 7284637 | Low-frequency sound reproducing speaker apparatus In a low-frequency sound reproducing speaker apparatus of Kelton type, a cabinet for containing a speaker unit is constituted by a shape of substantially a parallelepiped slender in a front and rear direction, a length dimension in the front and rear direction is se... | 10/23/2007 |
| 7278513 | Internal lens system for loudspeaker waveguides This invention provides a lens system for a loudspeaker. The loudspeaker may include a driver unit and a waveguide attached to the driver unit. The loudspeaker further may include a lens system. The lens system may include a plurality of plates. The plates may be po... | 10/09/2007 |
