Patent US3967693A successfully refreshed from Google Patents.
US3967693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for dismissing or decreasing sound's energy
Assignee: Asahi Kasei Corp
•
Filing: 1974-05-23
•
Granted: 1976-07-06
•
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 21:20
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.
References Cited (Backward Citations)
US1705778A
Cited
US1846887A
Cited
FR986419A
Cited
FR1121259A
Cited
CH338013A
Cited
US2808122A
Cited
DE1187027B
Cited
US3132715A
Cited
FR87329E
Cited
DE1942116A1
Cited
DE1946561A1
Cited
US3656576A
Cited
US3814208A
Cited
US3846949A
Cited
US3820627A
Cited
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 |