US3656576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Noise shield panels and method of fabrication
Assignee: Individual
•
Filing: 1971-04-15
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Granted: 1972-04-18
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Expires: 1991-04-15
Abstract
Abstract A hollow, rectangular plastic casing and a sheathed sound absorbing material batt forming a sound absorbing panel; as a panel casing noise source facing front wall, an echelon of four forwardly inclined integral step-like faces, each with three offset series of longitudinally spaced outwardly-flanged apertures, and a bottom straight margin with a single, like aperture series; a casing back wall with alternating raised and depressed regions; the batt spaced from the back by fibrous blocks or deeper back depressions; end closures and opposed vertical flats at the lateral ends of the front and back walls; and a longitudinal land and complementarily shaped groove in the top and bottom casing walls, whereby like panels are insertable with land and groove engagements and with panel ends engaged between the opposed flanges of respective spaced H-beam uprights optionally. A panel edge-surrounding impregnated sealing band, forming a seal concealed in the tongue-and-groove engagement of adjacent panels. A noise fence comprising spaced H-beams thus filled with interposed panels and capped by inverted U-channels. Casing fabrication in one piece by blow-molding from heated extruded thermoplastic tubular stock; or by vacuum forming, injection molding, centrifugal or rotational casing as front and back halves to be partially telescoped and welded or cemented together.
Inventors
- 👤 Gunter Gubela
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:34
CPC Classifications
E; E01; E01F; E01F8/00; E01F8/0005; E01F8/0047; E01F8/0064; E01F8/007
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
92 words
A noise shield panel, especially adapted for construction of a noise shield fence for screening of highways and like noise sources, comprised of: a synthetic plastic casing and, within the casing, a sound-absorbing fibrous material batt; the front wall of the casing, intended to be disposed toward the noise source, in substantial part being comprised of several superposed, forwardly inclined wall elements successively integrally connected by respective approximately horizontal wall elements, resulting in a saw-tooth-like, wall local cross-section; said inclined wall elements each having a multiplicity of sound energy admitting apertures therethrough.
Claim 2
Dependent Claim
92 words
A noise shield panel, especially adapted for construction of a noise shield fence for screening of highways and like noise sources, comprised of: a synthetic plastic casing and, within the casing, a sound-absorbing fibrous material batt; the front wall of the casing, intended to be disposed toward the noise source, in substantial part being comprised of several superposed, forwardly inclined wall elements successively integrally connected by respective approximately horizontal wall elements, resulting in a saw-tooth-like, wall local cross-section; said inclined wall elements each having a multiplicity of sound energy admitting apertures therethrough.
Claim 3
Dependent Claim
51 words
A noise shield panel as described in claim 1, wherein: said casing has an elongated rectangular form in frontal aspect, and roughly rectangular form in side aspect, with a thickness dimension small as compared to height and width; said batt extending over the major part of the casing height and width.
Claim 4
Dependent Claim
29 words
A noise shield panel as described in claim 1, wherein: the forwardly inclined elements are inclined from the vertical by an angle of from about 3* to about 30*.
Claim 5
Dependent Claim
20 words
A noise shield panel as described in claim 2, wherein: said panel front wall includes four said inclined wall elements.
Claim 6
Dependent Claim
25 words
A noise shield panel as described in claim 3, wherein: said apertures are surrounded by respective short outward flanges integral with the inclined wall elements.
Claim 7
Dependent Claim
34 words
A noise shield panel as described in claim 1, wherein: in each of said inclined wall elements, said apertures are arrayed equi-spaced in rows, with the apertures of adjacent rows offset from each other.
Claim 8
Dependent Claim
52 words
A noise shield panel as described in claim 6, wherein: the casing front wall further includes a vertical wall element provided with at least one row of sound energy admitting apertures therethrough, said vertical wall element located below the lowermost inclined wall element, and thereto joined by a further approximately horizontal element.
Claim 9
Dependent Claim
44 words
A noise shield panel as described in claim 2, wherein: the sound absorbing material is a form-stable glass fiber batt of rectangular cross section enclosed by a moisture shield, such as a synthetic plastic film envelope or a spray coating of a bituminous resin.
Claim 10
Dependent Claim
66 words
A noise shield panel as described in claim 2, wherein: the sound absorbing glass fiber batt has a rectangular cross section and is disposed against inside edges of the saw tooth section region of the wall, and spaced from the back wall of the casing, by spacer blocks of sound absorbing material interposed at both ends of the casing between the batt and said back wall.
Claim 11
Dependent Claim
61 words
A noise shield panel as described in claim 9, wherein: the said front and back walls, at two opposite end regions of the panel, have flat marginal external surfaces parallel to each other over the entire end marginal extent of the panel, whereby the said end regions are adapted to engage in respective inter-flange slots of correspondingly spaced H-section beam uprights.
Claim 12
Dependent Claim
48 words
A noise shield panel as described in claim 10, wherein: for introduction of the sound absorbing batt, at least one of the two opposite casing end walls is provided as a flap connected in hinge-like fashion with an adjacent edge of one of said back and front walls.
Claim 13
Dependent Claim
27 words
A noise shield panel as described in claim 2, wherein: the casing has a back wall with alternating elevations and depressions running transversely of the casing length.
Claim 14
Dependent Claim
79 words
A noise shield panel as described in claim 2, wherein: said batt has a rectangular cross section; said back wall is stiffened by a checkerboard-like pattern of integrally molded square inward depressions, with at least four of said depressions located near the periphery of the casing and similarly depressed inward deeper than the others, and contacting the back of the said batt, thereby to support it against inside edges of the saw tooth-like section region of said front wall.
Claim 15
Dependent Claim
54 words
A noise shield panel as described in claim 2, wherein: one edge wall of the casing has a land and the opposite edge wall parallel thereto has a correspondingly located and shaped groove, whereby like panels similarly oriented may be placed edgewise one upon another with a tongue-and-groove type engagement of lands and grooves.
Claim 16
Dependent Claim
66 words
A noise shield panel as described in claim 2, wherein: the synthetic plastic casing is comprised of two half-shell members, embodying respectively said front and back walls, and respective peripheral flanges forming side, top and bottom end wall portions, the flange of one member telescoped into the flange of the other, and overlapped portions of said flanges secured as a seam to form the hollow casing.
Claim 17
Dependent Claim
43 words
A noise shield panel as described in claim 15, wherein: the flanges of the two half-shells are secured as a seam running around all four narrow sides of the casing; the overlapped seamed flanges being bonded to one another by cementing or welding.
Claim 18
Dependent Claim
24 words
A noise shield panel as described in claim 15, wherein: the said half-shells of the casing are vacuum formed, injection molded, or centrifugally cast.
Claim 19
Dependent Claim
31 words
A noise shield panel as described in claim 2, wherein: a sealing band runs around all four narrow edge walls of the casing; said band comprised of a bituminous-impregnated elastic band.
Claim 20
Dependent Claim
18 words
A noise shield panel as described in claim 2, wherein: the synthetic plastic casing is a blow-molded body.
Claim 21
Dependent Claim
183 words
A noise shield panel as described in claim 2, wherein: the forwardly inclined elements are inclined from the vertical by an angle of from about 3* to about 30* ; the casing front wall further includes a vertical wall element located below the lowermost inclined wall element, and thereto joined by a further approximately horizontal element; said vertical wall element provided with at least one row of sound energy admitting apertures therethrough; said apertures in each of said inclined wall elements are arrayed equi-spaced in rows, with apertures of adjacent rows offset from each other; the said front and back walls, at two opposite end regions of the panel, have flat marginal external surfaces parallel to each other over the entire end marginal extent of the panel, whereby the said end regions are adapted to engage in respective inter-flange slots of correspondingly spaced H-section beam uprights; the sound absorbing material is a form-stable glass fiber batt of rectangular cross section disposed against inside edges of the saw tooth section region of the front wall, and spaced from the back wall of the casing.
Claim 22
Dependent Claim
37 words
A noise shield panel as described in claim 20, wherein: the sound absorbing glass fiber batt is enclosed by a moisture shield such as a synthetic plastic film envelope or a spray coating of bituminous type resin.
Claim 23
Dependent Claim
57 words
A noise shield panel as described in claim 20, wherein: the casing back wall has alternating elevations and depressions running transversely of the panel length; and said batt is spaced from the back by spacer blocks of sound absorbing material interposed at both ends of the casing between the glass fiber batt and the said back wall.
Claim 24
Dependent Claim
72 words
A noise shield panel as described in claim 20, wherein: said back wall is stiffened by a checkErboard-like pattern of integrally molded square inward depressions, with at least four of said depressions located near the periphery of the casing and similarly depressed inward deeper than the others, and contacting the back of the said fiber batt, thereby to support it against inside edges of the sawtooth-like section region of said front wall.
Claim 25
Dependent Claim
54 words
A noise shield panel as described in claim 20, wherein: one edge wall of the casing has a land and the opposite edge wall parallel thereto has a correspondingly located and shaped groove, whereby like panels may be placed similarly oriented edgewise one upon another with a tongue-and-groove type engagement of lands and grooves.
Claim 26
Dependent Claim
199 words
A noise shield panel as described in claim 2, wherein: the forwardly inclined elements are inclined from the vertical by an angle of from about 3* to about 30*; the casing front wall further includes a vertical wall element located below the lowermost inclined wall element, and thereto joined by a further approximately horizontal element; said vertical wall element provided with at least one row of sound energy admitting apertures therethrough; said apertures in each of said inclined wall elements are arrayed equi-spaced in rows, with the apertures of adjacent rows offset from each other; said apertures are surrounded by respective short collar-like round outward flanges integral with the wall elements; the said front and back walls, at two opposite end regions of the panel, have flat marginal external surfaces parallel to each other over the entire end marginal extent of the panel, whereby the said end regions are adapted to engage in respective inter-flange slots of correspondingly spaced H-section beam uprights; the sound absorbing material is a form-stable glass fiber batt of rectangular cross section disposed against inside edges of the saw tooth section region of the front wall, and spaced from the back wall of the casing.
Claim 27
Dependent Claim
97 words
A noise screening fence constructed of noise shield panels as described in claim 20 and a plurality of H-beam uprights embedded in the ground at a spacing from one another corresponding to the length of said panels as measured between the ends having said flat surfaces; a plurality of said panels being disposed one upon another in vertical alignment between respectively adjacent uprights with opposite panel ends engaged in the inter-flange slots of the uprights; and with an inverted channel beam spanning the top ends of adjacent uprights forming an upper edge of the noise screening fence.
Claim 28
Dependent Claim
21 words
A noise screening fence as described in claim 26, including, between two adjacent uprights, a door constructed of the described panels.
Claim 29
Dependent Claim
94 words
For fabrication of a noise shield panel as described in claim 19, a method comprising the steps of: blowing a heated section of thermoplastic synthetic tube in a blow mold having an internal shape corresponding to the configuration of the desired finished panel with the apertures of the front wall blown in a flanged form initially closed by a cap-like wall across the flange outer end; removing the cap-like closures from the flange ends, by sawing or grinding off, to free the apertures; and introducing the fibrous batt into the interior of the casing.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-18 | 1975-10-18 | 1976-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-18 | 1979-10-18 | 1980-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-18 | 1983-10-18 | 1984-04-18 | $7700.00 | Window Closed / Lapsed |