US3967693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for dismissing or decreasing sound's energy
Assignee: Asahi Kasei Corp
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Filing: 1974-05-23
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Granted: 1976-07-06
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Expires: 1994-05-23
Abstract
Abstract There is disclosed a means and method for diminishing energy of sound. A corrugated cover having holes therethrough is mounted on a wall by ribs and an edge plate. The wall and edge plate together with the ribs and corrugated cover form a plurality of chambers, each cooperating with a plurality of the holes for diminishing the energy of impinging sound waves.
Inventors
- 👤 Isao Okawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:07
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/16; G10K11/172
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
129 words
A sound decreasing means for decreasing the pressure of sound at a wall surface comprising: a vertical wall; a plurality of spaced apart ribs, each attached to said wall; an edge plate attached to said ribs and to said wall along the top horizontal edge thereof; a cover coat laminated to each of said ribs and oriented essentially parallel with said wall so that said cover and said wall form with said ribs and said edge plate a plurality of chambers, said cover comprising a porous surface bent into a wave-form having peaks and recesses, said surface having defined therethrough a plurality of holes associated with each chamber and positioned in said recesses of said surface so that air can enter into each chamber through said plurality of holes.
Claim 2
Dependent Claim
129 words
A sound decreasing means for decreasing the pressure of sound at a wall surface comprising: a vertical wall; a plurality of spaced apart ribs, each attached to said wall; an edge plate attached to said ribs and to said wall along the top horizontal edge thereof; a cover coat laminated to each of said ribs and oriented essentially parallel with said wall so that said cover and said wall form with said ribs and said edge plate a plurality of chambers, said cover comprising a porous surface bent into a wave-form having peaks and recesses, said surface having defined therethrough a plurality of holes associated with each chamber and positioned in said recesses of said surface so that air can enter into each chamber through said plurality of holes.
Claim 3
Dependent Claim
14 words
The sound decreasing means of claim 1 wherein said wall is formed of metal.
Claim 4
Dependent Claim
15 words
The sound decreasing means of claim 1 wherein said wall is formed of heavy materials.
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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) | 1979-07-06 | 1980-01-05 | 1980-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-06 | 1984-01-05 | 1984-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-06 | 1988-01-05 | 1988-07-06 | $7700.00 | Window Closed / Lapsed |