WO2008076096A2 - Audio visual system and apparatus - Google Patents
Audio visual system and apparatus Download PDFInfo
- Publication number
- WO2008076096A2 WO2008076096A2 PCT/US2006/047727 US2006047727W WO2008076096A2 WO 2008076096 A2 WO2008076096 A2 WO 2008076096A2 US 2006047727 W US2006047727 W US 2006047727W WO 2008076096 A2 WO2008076096 A2 WO 2008076096A2
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- WIPO (PCT)
- Prior art keywords
- speaker
- arms
- drive
- speaker arms
- edges
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
- H04R1/028—Casings; Cabinets ; Supports therefor; Mountings therein associated with devices performing functions other than acoustics, e.g. electric candles
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R5/00—Stereophonic arrangements
- H04R5/02—Spatial or constructional arrangements of loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
- H04R2499/10—General applications
- H04R2499/15—Transducers incorporated in visual displaying devices, e.g. televisions, computer displays, laptops
Definitions
- This invention relates to audio system used in a home or an office environment, and in particular to such a system that is mechanically able to adjust loudspeaker separation.
- Entertainment centers are one type of audio visual system that typically include a plurality of audio visual components including any number or all of the following: a television., speakers, a receiver, a VCR, a CD player, a DVD player, a personal video recorder (PVR), and TIVO type products. These systems have been available in a variety of sizes, shapes, and styles. For example, a television, receiver, VCR, and CD and DVD players can be housed in a cabinet having additional shelves and/or drawers to store other items such as books, remote controls, video recordings 1 ., CDs, and DVDs. Some entertainment centers are open in the front, while others have doors that conceal some or all of the components from view.
- Figure IA is a front elevational view of an entertainment cabinet of the present invention, showing a monitor screen and retracted speakers extended upwardly from the cabinet;
- Figure IB is a front elevational view thereof showing the speakers in extended positions;
- Figure 2 A is a front elevational view of another cabinet of the present invention having a monitor and retracted speakers enclosed therein;
- Figure 2B is a front elevational view of the cabinet of Fig.
- FIG. 2 A illustrates an alternate cabinet 2 within which the video monitor 6 is permanently engaged.
- the speakers 8L and 8R are also engaged with cabinet 2.
- Fig. 2B the speakers 8L. and 8R are shown drawn outwardly from cabinet 2 into laterally extended positions spaced apart from each other and from cabinet 2.
- speakers 8L and 8R are behind cabinet 2 in Fig. 2 A and are extended outwardly on speaker arms 20, but still in a position to the rear of cabinet 2 in Fig. 2B.
- screens 50 are attached to cabinet 2 and also to speakers 8L and 8R as shown, ⁇ yhen speakers 8L and 8R are mounted behind cabinet 2, as shown in Fig. 2A, the screens 50 are wound up like window shades where the rollers are hidden behind cabinet 2, and when the speakers 8L and 8R are extended laterally, as shown by the arrows, and spaced apart from cabinet 2, the screens 50 are extended with the speakers 8L. and 8R so as to prevent direct visual access to the speakers 8L and 8R, as shown in Fig. 3. This is considered to be a preferred visual appearance over the appearance shown in Fig. 2B. Details of this enablement are defined in the referenced US Patent 6997525.
- FIG. 4 an audio-visual system that is wall mounted (the wall illustrated by surface 5 in Fig. 5), for instance, and the speakers 8L and 8R are shown extended laterally as in Fig. 2B, and also speakers 8U and 8D are shown vertically extended, upwardly and downwardly respectfully. All four speakers: 8L, 8R, 8U, and 8D, are able to move between the extended position as shown in Fig 4, and retracted positions Mdden behind (Fig. 5) or within (Fig. 6) cabinet 2, and the means for accomplishing this will be described below. Accordingly, this system is well suited for space-limited room environments where there is little room for floor standing speakers. When speakers 8L and 8R are spaced apart from cabinet 2, it is possible to optimize the stereophonic effect and other dramatic theater sound effects.
- each said speaker system includes one or more audio producing devices, such as moving cone or horn type speaker components as are well known in the art, permanently mounted within a speaker enclosure, as is well known in the art as well.
- audio producing devices such as moving cone or horn type speaker components as are well known in the art, permanently mounted within a speaker enclosure, as is well known in the art as well.
- the term “speaker” is also used herein, not to be ambiguous, to denote one or more empty enclosure boxes or speaker cases. Such an empty enclosure box is able to accommodate one or more of the above described speaker enclosures within it. Therefore, “speakers” as used herein refers to any configuration of audio sound emitting devices or boxes that may receive such components therein, and that may be mounted to the speaker arms 20.
- the drive system comprises a motor 50 (Fig 8) having a pair of drive sprockets 52 on the motor shaft, which rotate together in the same rotational sense.
- the drive system further provides a pair of spaced apart driven sprockets 54.
- Each of the driven sprockets 54 is mounted on an axle 57 supporting a pair of drive gears 56.
- the speaker arms 20 each have mounted on one side thereof, a pair of parallel linear geairs 26 (Fig. 9) which are engaged with the drive gears 56 for moving the speaker aims 20 in axial translation as previously described. It is noted that the grooves 4:2 of the wheels 40 engage the edges 22 of the speaker arms 20 so that the speaker aims 20 are restrained to linear axial motion, as previously described.
- FIGs. 7 -9 mounting tabs 60 are shown which are used for engaging chassis 10 to cabinet 2. Chassis 10 may also be mounted to wall 5 directly. Power for operating motor 50 is preferably routed from the audio equipment housed within cabinet 2.
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Abstract
An apparatus for adjusting speaker separation in an audio system housed in a cabinet provides a chassis adapted for mounting on a rear wall of the cabinet and includes a pair of elongated speaker arms aligned in face-to-face adjacency, each of the speaker arms having opposing, parallel, smooth linear edges, the edges of one of the speaker arms aligned with the edges of the other of (he speaker arms. Terminal ends of the speaker arms extend from opposing ends of the chassis. A speaker is mounted on the terminal end of each of the speaker arms. Plural, linearly aligned, wheels rotationally engage the speaker arms, and a drive system engages the speaker arms, the drive system enabling axial translation of the speaker arms between mutually retracted positions and mutually extended positions, thereby adjusting physical separation of the speakers along an axis.
Description
AUDIO VISUAL SYSTEM AND APPARATUS
FIELD OF THE INVENTION
[0001] This invention relates to audio system used in a home or an office environment, and in particular to such a system that is mechanically able to adjust loudspeaker separation.
BACKGROUND OF THE INVENTION
[0002] Entertainment centers are one type of audio visual system that typically include a plurality of audio visual components including any number or all of the following: a television., speakers, a receiver, a VCR, a CD player, a DVD player, a personal video recorder (PVR), and TIVO type products. These systems have been available in a variety of sizes, shapes, and styles. For example, a television, receiver, VCR, and CD and DVD players can be housed in a cabinet having additional shelves and/or drawers to store other items such as books, remote controls, video recordings1., CDs, and DVDs. Some entertainment centers are open in the front, while others have doors that conceal some or all of the components from view.
[0003] There remains a need to improve audio visual or home entertainment systems to be more suitable for space-limited environments in the office or home where, for example, there may not be the desired amount of room for floor standing speakers. Also, then; is a need to provide systems that provide space saving storage for speakers.
[0004] Typically, an audiophile will want to separate speakers for optimal acoustic properties, while others sharing the same space will want to optimize room appearance. These two objectives may not be able to be met at the same time. Therefore, there is a need for a mechanical solution to moving speakers to adjust their spacing while still mamtaining a neat appearance of an audio equipment cabinet or a flat panel television.
SUMMARY OF THE INVENTION
[0005] An audio visual system includes a housing and a pair of speakers that are movable so that they can be spaced from the housing to provide a desired acoustic effect. The speakers are movable from a first position, where they are hidden from view, to a second position, where they are spaced from the housing and the front of the speakers are unobstructed. The system includes extensible members coupled to the housing, with the speakers mounted on the extensible members.
[0006] With this construction, the speakers can be hidden from view when the system is not in use. However, in use, the speakers can be extended from the housing, which can be in the form of a flat panel monitor, by a selected distance, in order to improve stereophonic sound reproduction and/or distribution within the room in which the system is placed. The distance between the speakers and the housing or cabinet c∑in be adjusted to achieve the optimum sound to a listener within the given area.
[0007] Not only does the hidden aspect improve the appearance of the system when not in use, it also provides speaker protection. First, the housing can provide shelter from dust, and further, the portion of the housing behind which the speakers are disposed can be constructed to prevent or minimize the possibility of sharp objects or fluids, such as cleaning fluids, from passing through the speaker covers, and into the speaker components such as speaker cones. Otherwise such sharp objects or fluids could damage the speakers and cause deterioration of the speaker's sound reproductive quality. The portion of the housing in front of the speakers also can be constructed of suitable material to protect the speakers from pets and potential clawing of the speaker fabric, which can result in tearing the fabric and then damage to the speaker components.
[0008] The above is a brief description of some deficiencies in the prior art and advantages of the present invention. Other features, advantages, and embodiments of the invention will be apparent to those skilled in the art from the following description,
accompanying drawings, wherein, for purposes of illustration only, specific forms of the invention are set forth in detail.
BRIEF DESCRIPTION OF THE DRAWINGS
[0009] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention. In the drawings: [0010] Figure IA is a front elevational view of an entertainment cabinet of the present invention, showing a monitor screen and retracted speakers extended upwardly from the cabinet; [0011] Figure IB is a front elevational view thereof showing the speakers in extended positions; [0012] Figure 2 A is a front elevational view of another cabinet of the present invention having a monitor and retracted speakers enclosed therein; [0013] Figure 2B is a front elevational view of the cabinet of Fig. 2A3 with speakers extended, laterally; [0014] Figure 3 is a front elevational view thereof with speakers and screens extended laterally therefrom; [0015] Figure 4 is a front elevational view of the cabinet similar to that shown in Fig. 2A, with a fust pair of speakers and extended laterally, and a second pair of speakers shown extended vertically above and below the cabinet;
[0016] Figure 5 is a top plan view of the invention as depicted in Figs.2 A and 2B; [0017] Figure 6 is a top plan view of the invention as depicted in Fig. 3; [0018] Figure 7 is a perspective view of a chassis of the invention showing exterior details; [0019] Figure 8 is a perspective view thereof showing interior details; and [0020] Figure 9 is a sectional view taken from cutting plane 8-8 in Fig. 8.
DETAILED DESCRIPTION OF THE INVENTION
[0021] It is to be: understood that this invention is not limited to the particular embodiments or examples described, as such may vary in accordance with the abilities of those of skill in the relevant arts.
[0022] Referring to Figs. IA, cabinet 2 houses a video display 6, which can be a component of a television as depicted in the illustrative embodiment, and also houses left and right speakers 8L and 8R each having a front panel. Display 6 and speakers 8L and 8R are mounted for moving from a position within cabinet 2 to an upwardly extended position, as shown in Fig. IA. In Fig. IB, speakers 8L and 8R are showia extended laterally. Details of this enablement are defined in US Patent 6997525, which is incorporated herein by reference.
[0023] Fig. 2 A illustrates an alternate cabinet 2 within which the video monitor 6 is permanently engaged. The speakers 8L and 8R are also engaged with cabinet 2. In Fig. 2B, the speakers 8L. and 8R are shown drawn outwardly from cabinet 2 into laterally extended positions spaced apart from each other and from cabinet 2. Preferably, speakers 8L and 8R are behind cabinet 2 in Fig. 2 A and are extended outwardly on speaker arms 20, but still in a position to the rear of cabinet 2 in Fig. 2B.
[0024] In Fig. 3, screens 50 are attached to cabinet 2 and also to speakers 8L and 8R as shown, \yhen speakers 8L and 8R are mounted behind cabinet 2, as shown in Fig. 2A, the screens 50 are wound up like window shades where the rollers are hidden behind cabinet 2, and when the speakers 8L and 8R are extended laterally, as shown by the arrows, and spaced apart from cabinet 2, the screens 50 are extended with the speakers 8L. and 8R so as to prevent direct visual access to the speakers 8L and 8R, as shown in Fig. 3. This is considered to be a preferred visual appearance over the appearance shown in Fig. 2B. Details of this enablement are defined in the referenced US Patent 6997525.
[0025] In Fig. 4, an audio-visual system that is wall mounted (the wall illustrated by surface 5 in Fig. 5), for instance, and the speakers 8L and 8R are shown extended laterally as in Fig. 2B, and also speakers 8U and 8D are shown vertically extended, upwardly and downwardly respectfully. All four speakers: 8L, 8R, 8U, and 8D, are able to move between the extended position as shown in Fig 4, and retracted positions Mdden behind (Fig. 5) or within (Fig. 6) cabinet 2, and the means for
accomplishing this will be described below. Accordingly, this system is well suited for space-limited room environments where there is little room for floor standing speakers. When speakers 8L and 8R are spaced apart from cabinet 2, it is possible to optimize the stereophonic effect and other dramatic theater sound effects.
[0026] Referring now to Fig. 7, a chassis 10 may be mounted on a rear wall 4 (Fig. 5) or within (Fig. 6) of cabinet 2; the chassis 10 providing a pair of the elongated speaker arms 20 alϋgned in face-to-face adjacency as shown in Fig. 8. Each of the speaker arms 20 have opposing, parallel, smooth linear edges 22, and these edges 22 of the speaker aims 20 are mutually aligned parallel to each other. Terminal ends 24 of the speaker arms 20 extend from opposing ends 12A and 12B of chassis 10. As shown in figures IB, 2B, and 3-6, speakers 8L and 8R are mounted on the terminal ends 24 of the speaker arms 20. The term "speakers" is used herein to denote one or more speaker systems, wherein each said speaker system includes one or more audio producing devices, such as moving cone or horn type speaker components as are well known in the art, permanently mounted within a speaker enclosure, as is well known in the art as well. The term "speaker" is also used herein, not to be ambiguous, to denote one or more empty enclosure boxes or speaker cases. Such an empty enclosure box is able to accommodate one or more of the above described speaker enclosures within it. Therefore, "speakers" as used herein refers to any configuration of audio sound emitting devices or boxes that may receive such components therein, and that may be mounted to the speaker arms 20.
[0027] Within the chassis 10, plural, linearly aligned, wheels 40 rotationally engage the speaker arms 20. The wheels 40 have annular central grooves 42 which engaged the edges 22 of speaker arms 20 for securing the speaker arms 20 in engagement therewith. A drive system engages the speaker arms 20 enabling axial translation of the speaker arms 20 between mutually retracted positions as shown in Figs. IA, 2 A, and 5, and mutually extended positions as shown in Figs. IB, 2B, 3 and 4, thereby providing the ability for adjusting the physical separation of the speakers 8L and 8BL along a horizontal axis, or 8U and 8D along a vertical axis as shown in Fig. 4 wherein said axes are shown.
[0028] Preferably, the drive system comprises a motor 50 (Fig 8) having a pair of drive sprockets 52 on the motor shaft, which rotate together in the same rotational sense. The drive system further provides a pair of spaced apart driven sprockets 54. Each of the driven sprockets 54 is mounted on an axle 57 supporting a pair of drive gears 56. The speaker arms 20 each have mounted on one side thereof, a pair of parallel linear geairs 26 (Fig. 9) which are engaged with the drive gears 56 for moving the speaker aims 20 in axial translation as previously described. It is noted that the grooves 4:2 of the wheels 40 engage the edges 22 of the speaker arms 20 so that the speaker aims 20 are restrained to linear axial motion, as previously described. Also, it is pointed out that the speaker arms 20 engage slots 14 in the opposing ends 12 A and 12B of the chassis 10. In Fig. 8 it is shown that each of the drive sprockets 52 engage: one of the driven sprockets 54 by a drive belt 58, the drive belts 58 are mounted for rotating the driven sprockets in opposing rotational senses, i.e., one of the belts 58 is looped into a figure-eight configuration.
[0029] In Figs. 7 -9, mounting tabs 60 are shown which are used for engaging chassis 10 to cabinet 2. Chassis 10 may also be mounted to wall 5 directly. Power for operating motor 50 is preferably routed from the audio equipment housed within cabinet 2.
[0030] While the invention has been described with reference to specific embodiments, the invention by no means is limited to the specific embodiments illustrated and described herein. It is recognized that departures from the disclosed embodiments may be made within the scope of the invention and that obvious modifications will occur to a. person skilled in the art. In addition, many modifications may be made to adapt a particular situation, material, composition of matter, process, process step or steps, to the objective, spirit and scope of the present invention. All such modifications and equivalents are intended to be within the scope of the claims appended hereto.
Claims
1. An audio-visual system comprising: a cabinet enclosing a video monitor, the video monitor visible on a front wall of the cabinet; and a chassis engaged with the cabinet; the chassis providing:
a) a pair of elongated speaker arms aligned in face-to-face adjacency, each of the speaker arms having opposing, parallel, smooth linear edges, the edges of one of the speaker arms set parallel with the edges of the other of the speaker arms; terminal ends of the speaker arms extending from opposing ends of the chassis;
b) a pair of speakers, each of the speakers mounted on one of the terminal ends of the speaker arms; and
c) plural, linearly aligned, wheels rotationally engaging the speaker arms.
2. The system of claim 1 further comprising a drive system engaging the speaker arms, the drive system enabling axial translation of the speaker arms between mutually retracted positions and mutually extended positions, thereby adjusting physical separation of the speakers along an axis.
3. The system of claim 2 wherein the drive system comprises a motor engaged with a pair of spaced apart driven sprockets, each of the driven sprockets providing an axle supporting at least one drive gear.
4. The system of claim 3 wherein the speaker arms each provide at least one linear geiir, the at least one linear gear engaged with the at least one drive gear for moving the speaker arms in said axial translation.
5. The system of claim 1 wherein the wheels are grooved for securing the speaker Eirms in engagement therewith.
6. The system of claim 5 wherein the grooves of the wheels engage the edges of the spuaker arms.
7. The system of claim 1 wherein the speaker arms engage slots in the opposing ends of the chassis.
8. The system of claim 3 wherein the motor provides a pair of drive sprockets, each of the drive sprockets engaged with one of the driven sprockets by a drive belt, the drive belts configured for rotating the driven sprockets in opposing rotational senses.
9. An audio-visual system comprising: a cabinet enclosing a video monitor, the video monitor visible on a front wall of the cabinet; and a pair of chassis engaged in orthogonal juxtaposition with the cabinet; each of the chassis providing:
a) a pair of elongated speaker arms aligned in face-to-face adjacency, each of the speaker arms having opposing, parallel, smooth linear edges, the edges of one of the speaker arms aligned in parallel the edges of the other of the speaker arms; terminal ends of the speaker arms extending from opposing ends of the chassis;
b) a pair of speakers, each of the speakers mounted on one of the terminal ends of the speaker arms; and
c) plural, linearly aligned, wheels rotationally engaging the speaker arms.
10. The system of claim 9 wherein each of the drive systems engage two of the speaker arms, the drive systems enabling axial translation of the speaker arms between mutually retracted positions and mutually extended positions, thereby enabling adjustment of physical separation of the pairs of the speakers along both a horizontal and a vertical axis respectively.
11. Th.e system of claim 10 wherein each drive system comprises a motor engaged with a pair of spaced apart driven sprockets, each of the driven sprockets providing an axle supporting at least one drive gear.
12. The system of claim 10 wherein each of the speaker arms provides at least one linear gear, the at least one linear gear engaged with the at least one drive gear for moving the speaker arms in axial translation.
13. The system of claim 9 wherein the wheels are grooved for securing the speaker ϊirms in engagement therewith.
14. The system of claim 13 wherein the grooves of the wheels engage the edges of the speaker arms.
15. The system of claim 9 wherein the speaker arms engage slots in the opposing ends of the chassis.
16. The system of claim 9 wherein each motor provides a pair of drive sprockets, each of the drive sprockets engaged with one of the driven sprockets by a drive bell, the drive belts configured for rotating the driven sprockets in opposing rotational senses.
17. Aa apparatus for adjusting speaker separation in an audio system, the apparatus comprising:
a) a chassis;
b) a pair of elongated speaker arms aligned in face-to-face adjacency, each of the speaker arms having opposing, parallel, smooth linear edges, the edges of one of the speaker arms aligned in parallel with the edges of the other of the speaker arms; terminal ends of the speaker arms extending from opposing ends of the chassis;
c) a pair of speakers, each of the speakers mounted on one of the terminal ends of the speaker arms; and
d) plural, linearly aligned, wheels rotationally engaging the speaker arms.
18. The system of claim 17 further comprising a drive system engaging the speaker arms, the drive system enabling axial translation of the speaker arms between mutually retracted positions and mutually extended positions, thereby adjusting physical separation of the speakers along an axis.
19. The system of claim 18 wherein the drive system comprises a motor engaged with a pair of spaced apart driven sprockets, each of the driven sprockets providing an axle supporting at least one drive gear.
20. The system of claim 19 wherein the speaker arms each provide at least one linear gear, the at least one linear gear engaged with the at least one drive gear for moving the speaker arms in said axial translation.
21. The system of claim 17 wherein the wheels are grooved for securing the speaker arms in engagement therewith, the grooves of the wheels engaging the edges of the speaker arms.
22. The system of claim 17 wherein the speaker arms engage slots in the opposing ends of the chassis.
23. The system of claim 19 wherein the motor provides a pair of drive sprockets., each of the drive sprockets engaging one of the driven sprockets by a drive belt, the drive belts configured for rotating the driven sprockets in opposing rotational senses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/US2006/047727 WO2008076096A2 (en) | 2006-12-14 | 2006-12-14 | Audio visual system and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/US2006/047727 WO2008076096A2 (en) | 2006-12-14 | 2006-12-14 | Audio visual system and apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2008076096A2 true WO2008076096A2 (en) | 2008-06-26 |
| WO2008076096A3 WO2008076096A3 (en) | 2008-10-23 |
Family
ID=39536858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US2006/047727 WO2008076096A2 (en) | 2006-12-14 | 2006-12-14 | Audio visual system and apparatus |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2008076096A2 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3680936A (en) * | 1967-12-18 | 1972-08-01 | Peter Heinz Backhaus | Stereo sound reproduction system |
| US5119421A (en) * | 1990-07-03 | 1992-06-02 | Reime Paul W | Stereo system cabinet with loudspeaker door assembly |
| US20040135476A1 (en) * | 2003-01-07 | 2004-07-15 | Alan Gillengerten | Audio visual system and apparatus |
| US6997525B2 (en) * | 2003-09-17 | 2006-02-14 | Alan Gillengerten | Audio visual system |
-
2006
- 2006-12-14 WO PCT/US2006/047727 patent/WO2008076096A2/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3680936A (en) * | 1967-12-18 | 1972-08-01 | Peter Heinz Backhaus | Stereo sound reproduction system |
| US5119421A (en) * | 1990-07-03 | 1992-06-02 | Reime Paul W | Stereo system cabinet with loudspeaker door assembly |
| US20040135476A1 (en) * | 2003-01-07 | 2004-07-15 | Alan Gillengerten | Audio visual system and apparatus |
| US6997525B2 (en) * | 2003-09-17 | 2006-02-14 | Alan Gillengerten | Audio visual system |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008076096A3 (en) | 2008-10-23 |
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