Patent US3917024A successfully refreshed from Google Patents.
US3917024A
Expired / Lapsed
US
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Sound radiating structure
Assignee: Individual
•
Filing: 1973-10-26
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Granted: 1975-11-04
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Expires: 1993-10-26
Abstract
Abstract A sound radiating structure in which at least two totally enclosed sound transmission channels, or chambers having flexible walls are arranged in an adjacent spiral configuration and are individually excited by sound waves.
Inventors
- 👤 Jr Julius A Kaiser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:14
CPC Classifications
G; G10; G10K; G10K13/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
79 words
A sound radiating structure comprising: a. a first spiral shaped totally enclosed sound transmission chamber having a flexible portion, b. a second spiral shaped totally enclosed sound transmission chamber having a flexible portion and concentrically disposed about said first chamber, and c. sound producing means positioned adjacent said first chamber and said second chamber to cause sound waves to pass through said first and said second transmission chambers whereby said flexible portions will vibrate to produce secondary sound waves.
Claim 2
Dependent Claim
79 words
A sound radiating structure comprising: a. a first spiral shaped totally enclosed sound transmission chamber having a flexible portion, b. a second spiral shaped totally enclosed sound transmission chamber having a flexible portion and concentrically disposed about said first chamber, and c. sound producing means positioned adjacent said first chamber and said second chamber to cause sound waves to pass through said first and said second transmission chambers whereby said flexible portions will vibrate to produce secondary sound waves.
Claim 3
Dependent Claim
17 words
a sound radiating structure according to claim 1 wherein said spiral shapes are of the exponential type.
References Cited (Backward Citations)
US3687221A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-03 | 1979-05-05 | 1979-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-03 | 1983-05-05 | 1983-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-03 | 1987-05-05 | 1987-11-04 | $7700.00 | Window Closed / Lapsed |