Patent US4463049A successfully refreshed from Google Patents.
US4463049A
Expired / Lapsed
US
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Sound-absorbing wall-lining
Assignee: Dr Alois Stankiewicz GmbH
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Filing: 1983-01-17
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Granted: 1984-07-31
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Expires: 2003-01-17
Abstract
Abstract It should be possible to manufacture, in a simple manner, a sound-absorbing wall-lining (3) consisting of a material to be applied to the wall which needs lining, and a resilient layer (4, 5) of foam, e.g. foam rubber, felt, or similar material, having locally distinctive sound-absorbing capacities, and whose thickness will possibly remain uniform, provided the resilient layer (4, 5) contains a filler with locally distinctive degrees of cross-linking--corresponding to distinctive sound-absorbing capacities.
Inventors
- 👤 Wilhelm Kracke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:55
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/82; E04B1/84; E04B1/86; E04B2001/8414; E04B2001/8457; E04B2001/8461; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249961; Y10T428/249986; Y10T428/249987; Y10T428/249991; Y10T442/00; Y10T442/20; Y10T442/25
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
57 words
A sound insulating wall-lining having uniform thickness and locally distinctive sound insulating properties and comprising a resilient layer such as a foam or a felt containing a filler material and characterized by the fact that said locally distinctive sound insulating properties are caused by and correspond to locally distinctive degrees of chemical cross-linking in the filler material.
Claim 2
Dependent Claim
57 words
A sound insulating wall-lining having uniform thickness and locally distinctive sound insulating properties and comprising a resilient layer such as a foam or a felt containing a filler material and characterized by the fact that said locally distinctive sound insulating properties are caused by and correspond to locally distinctive degrees of chemical cross-linking in the filler material.
Claim 3
Dependent Claim
36 words
Sound-insulating wall-lining according to claim 1, characterized by the fact that, for cross-linking purposes, the filler has been mixed with a polyol as cross-linking agent, and that the sound-insulating properties correspond to locally distinctive mixture ratios.
Claim 4
Dependent Claim
18 words
The sound insulating wall-lining of claim 1 or 2 in association with a substrate comprising a wall-forming material.
Claim 5
Dependent Claim
17 words
The sound insulating wall-lining of claim 3 wherein the association is effected by means of an adhesive.
Claim 6
Dependent Claim
24 words
Sound-insulating wall-lining according to one of the claims 1 or 2, characterized by the fact that the wall-lining is designed as a formed unit.
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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) | 1987-07-31 | 1988-01-30 | 1988-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-31 | 1992-01-30 | 1992-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-31 | 1996-01-30 | 1996-07-31 | $7700.00 | Window Closed / Lapsed |