Patent US3961682A successfully refreshed from Google Patents.
US3961682A
Expired / Lapsed
US
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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 17:44
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)
US1866742A
Cited
US1952766A
Cited
US1900522A
Cited
US2184139A
Cited
US2695855A
Cited
DE1017767B
Cited
US3804196A
Cited
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 |