Patent US4674593A successfully refreshed from Google Patents.
US4674593A
Expired / Lapsed
US
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Sound barrier fence
Assignee: Individual
•
Filing: 1985-04-02
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Granted: 1987-06-23
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Expires: 2005-04-02
Abstract
Abstract This is a sound barrier fence adapted to reduce the noise level in a yard which is adjacent a freeway for example. The fence includes two spaced apart upright panels of a dense material such as concrete. The space between the panels which may be three to four inches in width, for example, is filled with a foam insulation material. Posts are provided to hold the upright members in place and rail caps and post caps are provided to keep water out of the interior of the fence.
Inventors
- 👤 Danny W. McCarty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:36
CPC Classifications
E; E01; E01F; E01F8/00; E01F8/0005; E01F8/0011
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
149 words
A sound barrier fence having: a first post having a first and a second notch spaced from each other and each notch having an outer side; a second post having a third and fourth notch with each said notch having an outer side; a high density first vertical panel having one end placed in said first notch and a second end placed in said third notch; a high density second vertical panel having a first end in placed in said third notch and a second end placed in said fourth notch; a low density material held in compression between said first vertical panel and said second vertical panel and forcing said first vertical panel against the outer side of said first and third notch and holding the second vertical panel against the outer surfaces of said second and fourth notch to securely anchor said panels in their respective notches.
Claim 2
Dependent Claim
149 words
A sound barrier fence having: a first post having a first and a second notch spaced from each other and each notch having an outer side; a second post having a third and fourth notch with each said notch having an outer side; a high density first vertical panel having one end placed in said first notch and a second end placed in said third notch; a high density second vertical panel having a first end in placed in said third notch and a second end placed in said fourth notch; a low density material held in compression between said first vertical panel and said second vertical panel and forcing said first vertical panel against the outer side of said first and third notch and holding the second vertical panel against the outer surfaces of said second and fourth notch to securely anchor said panels in their respective notches.
Claim 3
Dependent Claim
20 words
A sound barrier fence as defined in claim 1 in which said low density material is a tripolymer foam insulation.
Claim 4
Dependent Claim
22 words
A sound barrier fence as defined in claim 1 in which said upright panels are made of concrete prepared from portland cement.
Claim 5
Dependent Claim
35 words
A sound barrier fence as defined in claim 3 including a rail cap across a top of said two upright panels of said insulation material and a post cap across the top of said post.
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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) | 1990-06-22 | 1990-12-22 | 1991-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-22 | 1994-12-22 | 1995-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-22 | 1998-12-22 | 1999-06-23 | $7700.00 | Window Closed / Lapsed |