US3961682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound-absorbing wall element
Assignee: Hermann Hemscheidit Maschinenfabrik GmbH and Co
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Filing: 1974-11-29
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Granted: 1976-06-08
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Expires: 1994-11-29
Abstract
Abstract The invention concerns a sound-absorbing wall element made up of a plurality of layers, one layer comprising small shreds of reinforced pneumatic rubber tires, which tires are disintegrated to form the shreds, the shreds being bonded together to form a low-density irregular structure having pores.
Inventors
- 👤 Gerd Dausch
- 👤 Heinrich Klotz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:27
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B25/00; B32B25/04; B32B25/042; E; E01; E01F; E01F8/00; E01F8/0005; E01F8/0029; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/82; E04B1/8227; E04C; E04C2/00; E04C2/02; E04C2/10; E04C2/16; B32B2262/00; B32B2262/10; B32B2262/108; B32B2305/00; B32B2305/08; B32B2307/00; B32B2307/10; B32B2307/102; B32B2315/00; B32B2315/14; B32B2607/00; E04B1/84; E04B2001/8423; E04B2001/8442
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
90 words
In an open air sound-absorbing wall, a sound-absorbing wall element adapted to absorb air-borne sound, said element being composed of shreds of disintegrated reinforced pneumatic rubber tires, said shreds being bonded together to form an irregular weather-resistant panel structure having irregular pores, a majority of said shreds being of a length between 3 and 30 millimeters, said wall element containing a volume of said shreds which is not more than 60% of the volume of the wall element and having a density of less than 0.6 grams per cubic centimeter.
Claim 2
Dependent Claim
90 words
In an open air sound-absorbing wall, a sound-absorbing wall element adapted to absorb air-borne sound, said element being composed of shreds of disintegrated reinforced pneumatic rubber tires, said shreds being bonded together to form an irregular weather-resistant panel structure having irregular pores, a majority of said shreds being of a length between 3 and 30 millimeters, said wall element containing a volume of said shreds which is not more than 60% of the volume of the wall element and having a density of less than 0.6 grams per cubic centimeter.
Claim 3
Dependent Claim
44 words
A sound-absorbing wall having two layers, one of which comprises a frame provided with at least one cavity containing unbonded pieces of disintegrated reinforced pneumatic rubber tires, and the other of which comprises at least one sound-absorbing wall element as claimed in claim 1.
Claim 4
Dependent Claim
50 words
A sound-absorbing wall having three layers, the first layer comprising at least one sound-absorbing wall element as claimed in claim 1, the second layer comprising a muffling element laying adjacent the first layer, and the third layer comprising an air cavity adjacent the second layer and enclosed by a frame.
Claim 5
Dependent Claim
18 words
A sound-absorbing wall as claimed in claim 3, in which the muffling element is composed of mineral wool.
References Cited (Backward Citations)
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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) | 1979-06-08 | 1979-12-08 | 1980-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-08 | 1983-12-08 | 1984-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-08 | 1987-12-08 | 1988-06-08 | $7700.00 | Window Closed / Lapsed |