US3812931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound barrier
Assignee: ENG OF AMERICA CORP
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Filing: 1972-10-24
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Granted: 1974-05-28
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Expires: 1992-10-24
Abstract
Abstract A sound barrier is disclosed for attenuating noise emanating from a traffic area such as a freeway. The barrier borders the traffic area and incorporates a plurality of spaced-apart Helmholtz chambers, each comprising an elongated chamber having openings therein. The chambers may be of triangular cross section with an edge formed by the apex of the triangular cross section facing toward the traffic area. The openings are positioned in the sides of the triangular chambers; the chambers are positioned so that opposing sides of adjacent chambers form inverse-acting acoustic horns focusing the sound energy from the traffic area toward the openings. The openings also act as side-branch filters to assist in the attenuation of the noise.
Inventors
- 👤 J Hauskins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:59
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/16; G10K11/172; E; E01; E01F; E01F8/00; E01F8/0005; E01F8/0047; E01F8/0052; F; F01; F01N; F01N1/00; F01N1/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
91 words
A sound barrier for attenuating noise generated in a traffic area and transmitted to an adjacent area, comprising: a screen bordering said traffic area and positioned between said traffic area and said adjacent area; said screen including a plurality of vertically extending enclosed chambers each having openings therein to form resonating chambers, and including means for focusing sound energy from said traffic area into said openings; said chambers horizontally separated by optic apertures to present a full view of objects in said adjacent area to moving observers in said traffic area.
Claim 2
Dependent Claim
91 words
A sound barrier for attenuating noise generated in a traffic area and transmitted to an adjacent area, comprising: a screen bordering said traffic area and positioned between said traffic area and said adjacent area; said screen including a plurality of vertically extending enclosed chambers each having openings therein to form resonating chambers, and including means for focusing sound energy from said traffic area into said openings; said chambers horizontally separated by optic apertures to present a full view of objects in said adjacent area to moving observers in said traffic area.
Claim 3
Dependent Claim
38 words
The combination set forth in claim 1, wherein said chambers each have an opening therein positioned with respect to an adjacent chamber to form an acoustic horn for focusing sound energy from said traffic area toward said opening.
Claim 4
Dependent Claim
14 words
The combination set forth in claim 1, wherein said resonating chambers are Helmholtz chambers.
Claim 5
Dependent Claim
16 words
The combination set forth in claim 2, where each of said chambers is a Helmholtz chamber.
Claim 6
Dependent Claim
94 words
A sound barrier for attenuating noise generated in a traffic area and transmitted to an adjacent area, comprising: a screen bordering said traffic area and positioned between said traffic area and said adjacent area; said screen including a plurality of vertically extending Helmholtz chambers each having a constant cross-sectional area; each of said chambers including two openings therein, each opening positioned to receive focused sound energy existing between said one of said chambers and an adjacent chamber; said chambers positioned at spaced intervals to intercept and attenuate sound waves emanating from said traffic area.
Claim 7
Dependent Claim
94 words
A sound barrier for attenuating noise generated in a traffic area and transmitted to an adjacent area, comprising: a screen bordering said traffic area and positioned between said traffic area and said adjacent area; said screen including a plurality of vertically extending Helmholtz chambers each having a constant cross-sectional area; each of said chambers including two openings therein, each opening positioned to receive focused sound energy existing between said one of said chambers and an adjacent chamber; said chambers positioned at spaced intervals to intercept and attenuate sound waves emanating from said traffic area.
References Cited (Backward Citations)
US3382947A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |