US3603195A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Music-responsive light display
Assignee: Edmund Scientific Co
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Filing: 1968-06-21
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Granted: 1971-09-07
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Expires: 1988-06-21
Abstract
Abstract Mirrors are cemented to or suspended by threads from a rubber diaphragm stretched across the face of a loudspeaker in such a way as to trap a volume of air between the diaphragm and the speaker cone. When suspended mirrors are used, the diaphragm slopes slightly forward. A beam of light is directed through a color wheel, and is reflected from the mirrors onto a projection screen or other surface.
Inventors
- 👤 Charles S Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:48
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/02; H04R1/023; A; A63; A63J; A63J17/00; G; G09; G09F; G09F19/00; G09F19/12; G09F19/18
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
100 words
Display apparatus comprising an elastic diaphragm, electromechanical transducing means adapted to receive an audiofrequency electrical input, means coupling the mechanical output of said transducing means to said diaphragm to vibrate said diaphragm in response to said electrical input, at least one mirror, means directing a beam of light to the reflecting surface of each mirror, means having substantial thickness for each mirror, located between said mirror and said diaphragm, fastening a portion of said mirror to said diaphragm so that a part of the edge of each said mirror remote from said fastened portion is in contact with said diaphragm.
Claim 2
Dependent Claim
100 words
Display apparatus comprising an elastic diaphragm, electromechanical transducing means adapted to receive an audiofrequency electrical input, means coupling the mechanical output of said transducing means to said diaphragm to vibrate said diaphragm in response to said electrical input, at least one mirror, means directing a beam of light to the reflecting surface of each mirror, means having substantial thickness for each mirror, located between said mirror and said diaphragm, fastening a portion of said mirror to said diaphragm so that a part of the edge of each said mirror remote from said fastened portion is in contact with said diaphragm.
Claim 3
Dependent Claim
14 words
Display apparatus according to claim 1 in which said coupling means is pneumatic-coupling means.
Claim 4
Dependent Claim
111 words
Display apparatus comprising an elastic diaphragm located in a substantially vertical plane, electromechanical-transducing means adapted to receive an audiofrequency electrical input, means coupling the mechanical output of said transducing means to said diaphragm to vibrate said diaphragm in response to said electrical input, at least one mirror, means directing a beam of light to the reflecting surface of each mirror, and an elongated flexible suspension means for each miRror fastened at one end to said diaphragm and at the other end to said mirror, each said suspension means having a length such that each said mirror is positioned within the area of the diaphragm and allowed to dangle against said diaphragm.
Claim 5
Dependent Claim
111 words
Display apparatus comprising an elastic diaphragm located in a substantially vertical plane, electromechanical-transducing means adapted to receive an audiofrequency electrical input, means coupling the mechanical output of said transducing means to said diaphragm to vibrate said diaphragm in response to said electrical input, at least one mirror, means directing a beam of light to the reflecting surface of each mirror, and an elongated flexible suspension means for each miRror fastened at one end to said diaphragm and at the other end to said mirror, each said suspension means having a length such that each said mirror is positioned within the area of the diaphragm and allowed to dangle against said diaphragm.
Claim 6
Dependent Claim
14 words
Display apparatus according to claim 3 in which said coupling means is pneumatic-coupling means.
Claim 7
Dependent Claim
77 words
Display apparatus according to claim 3 in which the substantially vertical plane in which said diaphragm is located is tilted slightly from the vertical in a direction and to an extent such that the end of each said flexible suspension means where fastened to its mirror is separated from the diaphragm when said flexible suspension means is vertical, but said mirror can rotate into and out of contact with said diaphragm while said suspension means is vertical.
Claim 8
Dependent Claim
16 words
Display apparatus according to claim 3 including a plurality of mirrors each of a different size.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |