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...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 8028791 | Sound reflective acoustic panel A sound reflective acoustic panel includes a panel having a scored surface. The scored surface includes a plurality of substantially parallel spaced apart kerfs. The kerfs are configured to allow the panel to flex. A plurality of support ribs are attached to the sco... | 10/04/2011 |
| 7815011 | Movable acoustic shell assembly A movable acoustic shell assembly comprises a ground-supported crane and an acoustic shell mounted on the ground-supported crane. The crane is configured to move in a self-propelled and self-directed manner between a storage position and an in-use position within a ... | 10/19/2010 |
| 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 |
| 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 |
| 7261180 | Rigging system for speaker cabinets A rigging system includes a lever arm permitting all speakers supported by the speaker whose rigging is adjusted to be angularly reoriented to focus the system, even out the coverage and fine tune the coverage. Multiple pivot attachment points for the moment arm are... | 08/28/2007 |
| 7261182 | Wide band sound diffuser with self regulated low frequency absorption and methods of mounting The present invention relates to an acoustical diffuser device, said apparatus comprising the main body from FIG. 1 and two lateral rigid supports (5), glued to the inside of the said diffuser which lateral supports are received, like a drawer, by two ... | 08/28/2007 |
| 7213680 | Acoustical wall covering assembly pleated and secured in situ for covering walls in movie theatres and method An acoustical wall covering assembly (10) with pleats (11) formed and attached in situ to a trim member for covering a wall of a movie theatre, in which a panel (22) of an acoustical wall covering attaches to a pleating member (22) having... | 05/08/2007 |
| 7182172 | Sound insulation system A sound insulation system for use with a vehicle includes a layer of fibrous padding material having a first surface and an opposite second surface. The first surface includes multiple spaced apart recesses. The second surface includes a substantially flat surface p... | 02/27/2007 |
| 7178630 | Acoustic device for wall mounting for diffusion and absorption of sound A wall-mountable acoustic device for absorption of sound in an indoor area is constructed of self-supporting interbonded rockwool mat material. The primary component made of the mat material is shaped in semi-cylindrical configuration. End panels of rockwool mat of ... | 02/20/2007 |
| 7093395 | Sports floor particularly for gymnasiums A floor composed of a plurality of modular elements comprises a first subassembly consisting of a base component and a first intermediate element and a second subassembly consisting of a second intermediate element and a top component forming a point elastic floor. ... | 08/22/2006 |
| 7011181 | Sound insulation system A sound insulation system for use with a vehicle includes a layer of fibrous padding material having a first surface and an opposite second surface. The first surface includes multiple spaced apart recesses. The second surface includes a substantially flat surface p... | 03/14/2006 |
| 6955204 | Partition system A partition system which includes a hollow body, plastic panel, a connector link member, a plurality of inserts for the panel, a trim element for mounting to the panel, a leveling member for adjusting the orientation of the panel relative to a floor surface, a frict... | 10/18/2005 |
| 6779627 | Flat panel sound radiator with fire protective back box A fire protective flat panel radiator assembly for installation in a suspended ceiling grid is provided. The assembly includes a flat panel radiator having a frame that supports a sonic diaphragm, which is driven by a transducer to reproduce an audio program. A back... | 08/24/2004 |
| 6772859 | Embodiments of aperiodic tiling of a single asymmetric diffusive base shape Embodiments of aperiodic tiling of a single asymmetrical diffusive base shape employ welled or stepped one-dimensional or two-dimensional diffusors, a single or compound curved surface, or an aperiodic geometrical form. Surfaces are tiled in any orientation offering... | 08/10/2004 |
| 6530451 | System of elements for the diffusion of sound in rooms deligated to the reproduction of music and speech A system for sound diffusion, particularly at low and infra-low frequencies in rooms used for the reproduction of music and speech including at least one large horn enclosure and an architectural structure with a continuous or intermittent "multi-hemicyli... | 03/11/2003 |
| 6520280 | System and method for workspace sound regulation A system (and method) for workspace sound regulation, includes an office enclosure having a plurality of barriers, the barriers including reflective surfaces, and the reflective surfaces creating a plurality of preferred locations in the enclosure.... | 02/18/2003 |
| 6491134 | Air-coupled surface wave structures for sound field modification A surface wave apparatus is disclosed having reduced sound attenuation across a surface along a known path having a path distance when compared to sound attenuation along a same path distance through air. The surface wave apparatus includes a plurality of... | 12/10/2002 |
| 6446751 | Apparatus and method for reducing noise levels A flexible sound shielding curtain contains a plurality of sound insulating sheet inserts encased within pockets or otherwise secured on the exterior surfaces of the panels of a curtain. The sound insulating sheet inserts may be constructed of a combinati... | 09/10/2002 |
| 6431312 | Motorized and computer operated variable acoustics treatment A motorized and computer controlled TRIFFUSOR.RTM. acoustical treatment system includes a plurality of TRIFFUSOR.RTM. banks mounted in various locations within a listening room. Mechanical actuators such as gears and sprockets are employed to mechanically... | 08/13/2002 |
| 6386315 | Flat panel sound radiator and assembly system An apparatus for mounting a flat panel radiator into a ceiling grid. The ceiling grid system includes openings defined by main beams and crossbeams. The main beams are secured through hanger wires to a hard ceiling. The main beams and the crossbeams have ... | 05/14/2002 |
| 6371240 | Anechoic chamber The modular anechoic panel system provides modular anechoic panel for construction of anechoic chambers particularly advantageous for use in sound testing and measurement. The modular anechoic panel incorporates into a single structural member the element... | 04/16/2002 |
| 6305495 | Surfacing panels for acoustical ceiling systems A rigid lightweight surfacing panel for providing a new surface for existing panels in acoustical panel ceiling systems, the surfacing panel having a degree of flex so to allow it to be pushed into place in a support system in underlying matched relation ... | 10/23/2001 |
| 6283247 | Fabric retainer for acoustic structure and methods of installation Fabric retainers and methods for installing the fabric retainers within an acoustically treated room. The fabric retainers have a fabric retaining portion, and a chase or a raceway for running wires within the interior of the retainers. The chase has an o... | 09/04/2001 |
| 6244378 | Dual sonic character acoustic panel and systems for use thereof An acoustically significant composite panel having a general sound-absorbing face (or a general sound-diffusing face) and a tuned sound-absorbing face. Such a panel includes a sandwich or composite of a first layer of molding media, a honeycomb of cells a... | 06/12/2001 |
| 6164408 | Plenum mounted, flat panel masking loudspeaker system and method for mounting a masking loudspeaker in a ceiling plenum A plenum mounted, flat metal panel diaphragm masking loudspeaker includes a flat, stamped sheet metal frame which has a deployed state and an undeployed, flat state well suited to storage or shipping. A large, movable tab at the bottom of the frame is wea... | 12/26/2000 |
| 6112852 | Acoustical treatments with diffusive and absorptive properties and process of design An appropriate binary sequence is used to create an acoustical treatment surface having desired parts with reflective properties and desired parts having absorptive properties resulting in the net effect of partially diffusive, partially absorptive proper... | 09/05/2000 |
| 6085861 | Collapsible portable acoustic tower The acoustic tower of the present invention is a portable, acoustic tower that has both a performance position and a storage position. In the storage position, a canopy panel lies substantially parallel proximate an upper panel, both of which are hingedly... | 07/11/2000 |
| 6082490 | Modular anechoic panel system and method The modular anechoic panel system provides modular anechoic panels for construction of anechoic chambers particularly advantageous for use in sound testing and measurement. The modular anechoic panel incorporates into a single structural member the elemen... | 07/04/2000 |
| 6073722 | Anechoic room for the entire auditory range A low reverberating room for the entire auditory range. In particular, for ow frequency ranges below 100 Hz, in which the walls and ceiling are covered with sound absorbers. The sound absorbers on a surface of about 70-90% of a room, not including the floo... | 06/13/2000 |
| 5992561 | Sound absorber, room and method of making A sound absorber is made primarily out of a triangular fiberglass panel. The front face of the sound absorber is covered with porous material. The side edges of the panel rest against walls in a room. A fiberglass pad may be attached to the back face of t... | 11/30/1999 |
| 5890323 | Theater The present invention relates to the design of a modern theater for providing live entertainment performances. The theater comprises an auditorium which is defined in part by a modular central core which encloses a defined space. The theater further compr... | 04/06/1999 |
| 5884436 | Reverberation room for acoustical testing A reverberation room comprising walls, ceiling and floor having specific dimensions and spatial relationships used in an automotive testing laboratory to analyze sound for the purposes of measuring transmission loss and sound absorption. The room possesse... | 03/23/1999 |
| 5817992 | Planar binary amplitude diffusor A two-dimensional binary amplitude diffusor (BAD) offering both absorption and modest diffusion is disclosed. The invention consists of a flat-faced panel with a series of alternating reflective and absorptive regions or patches defined by a binary sequen... | 10/06/1998 |
| 5700052 | Chair for an acoustically designed building A chair includes a main body with a seat, openings formed in the greater part of the lower surface of the seat, a sound absorbing structure contained in the seat while facing the openings, and a louver having a series of openings defined with a number of ... | 12/23/1997 |
| 5651405 | Portable acoustic shell An improved collapsible stage panel assembly having a base, a vertical panel rigidly attached to the base, an intermediate panel pivotally connected to the top of the rigid vertical panel, a canopy panel pivotally connected to the intermediate panel and a... | 07/29/1997 |
| 5646378 | Collapsible modular sound reproduction system A high fidelity audio playback wall. A transportable frame is used to rigidly fix loudspeakers and acoustic panels to correlate sound in a stereophonic manner. The acoustic panels are arranged to channel sound into a diffuse distributed sound field. The g... | 07/08/1997 |
| 5623130 | System for enhancing room acoustics A system utilizing a series of sound absorbant baffles which are spaced along intersecting wall and ceiling surfaces of a room or alternatively entirely on a wall surface to absorb sound waves moving in an oblique manner to the surfaces. The baffles are o... | 04/22/1997 |
| 5532438 | Acoustic imaging sound dome An acoustic imaging sound apparatus includes an acoustically reflective dome for reflecting and focusing stereophonic sound waves from stereo speakers directed into the interior of the dome. The stereophonic sound waves are focused by the dome to a listen... | 07/02/1996 |
| 5530211 | Sound reflecting shell tower and transporter structure and methods of erecting and storing the towers An orchestra shell tower and tower transporter system has a plurality of shell towers comprising an acoustic central panel hingedly connected along its side edges to acoustic wing panels. A generally horizontally rearwardly extending tripod-shaped open ba... | 06/25/1996 |
| 5525765 | Acoustical virtual environment A rehearsal room especially adapted to produce the auralization effect of different acoustical environments. The rehearsal room broadly includes a performance space defined by a plurality of walls, each of the walls including a plurality of acoustical abs... | 06/11/1996 |
