US4463049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound-absorbing wall-lining
Assignee: Dr Alois Stankiewicz GmbH
•
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 06:28
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.
References Cited (Backward Citations)
US3243374A
Cited
US3652377A
Cited
DE2437947A1
Cited
US4097633A
Cited
US4215764A
Cited
US4131664A
Cited
DE2744732A1
Cited
US4374172A
Cited
US4160491A
Cited
US4346782A
Cited
JPS55104528A
Cited
US4357393A
Cited
US4367259A
Cited
US4397894A
Cited
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 |