Acoustics – Diaphragm – Particular shape
Reexamination Certificate
1999-10-22
2001-03-13
Dang, Khanh (Department: 2837)
Acoustics
Diaphragm
Particular shape
C381S431000
Reexamination Certificate
active
06199655
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to audio speakers and more particularly to speakers which include a transparent aspect allowing a listener to see through the speaker.
2. Prior Art
Aesthetic appearance has always been a key element of audio speaker marketing. Indeed, much of the cost of conventional speakers arises from the high cost of expensive woods and trim applied to match a desired room decor. Accordingly, traditional design strategies have centered on creating visual appeal by enhancement of woods, fabrics and metals combined to provide a sense of richness.
Transparency by itself has been applied to electrostatic speakers, in view of known transparency of Mylar (R) and its acknowledged utility as an electrostatic emitter. Because grids and film are the primary components of electrostatic speakers, some aspect of transparency is known. However, the construction of these electrostatic speakers lack depth and three-dimensional character. Accordingly, the development of an aesthetically pleasing appearance with richness and depth was not a combination which was predictable.
OBJECTS AND SUMMARY OF THE INVENTION
It is an object of the present invention to provide uniqueness to a speaker by concurrently developing transparency and depth at the same time.
It is another object of the present invention to provide a speaker which provides a source of deep and full sound, yet seemingly from air and openness.
It is a further object of the present invention to provide a an unexpected audio response to a transparent speaker device.
It is a yet another object of the present invention to develop a three-dimensional appearance with a thin, flat speaker device.
These and other objects and advantages of the present invention are realized in a speaker device comprising a first perforated plate having a substantially continuous array of openings disposed across a height and width of the plate; a second perforated plate having a substantially continuous array of corresponding openings at least partially aligned with the openings of the first perforated plate; and a speaker diaphragm disposed in tension between the first and second perforated plates and operable as a vibrating element for emitting sound in accordance with an applied voltage. This diaphragm includes transparent properties allowing vision through the respective first and second plates and the speaker diaphragm.
By positioning the plate having larger openings between the observer and the plate having smaller openings, a perception of three-dimensions is provided to the thin speaker device.
REFERENCES:
patent: 3136867 (1964-06-01), Brettell
patent: 3935397 (1976-01-01), West
patent: 4105877 (1978-08-01), Peters
patent: 4533794 (1985-08-01), Beveridge
patent: 5392358 (1995-02-01), Driver
patent: 5400414 (1995-03-01), Thiele
American Technology Corporation
Dang Khanh
Thorpe North & Western LLP
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