US3822762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Decorative acoustic panel
Assignee: McDonnell Douglas Corp
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Filing: 1971-09-23
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Granted: 1974-07-09
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Expires: 1991-09-23
Abstract
Abstract An acoustic panel having a honeycomb core with edge members for mounting. A second honeycomb material over the first and the edge members spaces them from the decorative face sheet to prevent undesirable surface imperfections called markoff from appearing on the face sheet.
Inventors
- 👤 T Crispin
- 👤 F Duskin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:34
CPC Classifications
B; B64; B64C; B64C1/00; B64C1/06; B64C1/066; B32; B32B; B32B3/00; B32B3/10; B32B3/12; B32B5/00; B32B5/02; B64C1/40; E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/82; E04B1/84; E04B1/86; E04C; E04C2/00; E04C2/30; E04C2/34; E04C2/36; E04C2/365; B32B2262/00; B32B2262/10; B32B2262/101; B32B2307/00; B32B2307/10; B32B2307/102; B32B2605/00; B32B2605/18; E04B2001/742; E04B2001/748; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24149; Y10T428/24157; Y10T428/24273; Y10T428/24322; Y10T428/24331
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
83 words
A decorative acoustic panel comprising: a backing sheet, a honeycomb core material having randomly oriented glass fibers within the cells thereof, said core being affixed to a surface of said backing sheet, a honeycomb spacing material positioned over and affixed to said core and defining a substantially acoustical transparent interface, said cellular spacing material providing a unitary homogenous surface, an open weave fiberglass facing positioned over and affixed to said spacing material, and a decorative sound transmitting perforate face sheet over said surface.
Claim 2
Dependent Claim
83 words
A decorative acoustic panel comprising: a backing sheet, a honeycomb core material having randomly oriented glass fibers within the cells thereof, said core being affixed to a surface of said backing sheet, a honeycomb spacing material positioned over and affixed to said core and defining a substantially acoustical transparent interface, said cellular spacing material providing a unitary homogenous surface, an open weave fiberglass facing positioned over and affixed to said spacing material, and a decorative sound transmitting perforate face sheet over said surface.
Claim 3
Dependent Claim
27 words
A decorative acoustic panel as in claim 1 wherein an open weave fiberglass facing is positioned between and bonded to said core material and said spacing material.
Claim 4
Dependent Claim
22 words
A decorative acoustic panel as in claim 1 wherein internal blocking members are also affixed to a surface of said backing sheet.
Claim 5
Dependent Claim
43 words
A decorative acoustic panel as in claim 1 wherein the cells of said core material are relatively larger in thickness and size than the cells of said spacing material and wherein the abutting edges are bonded at points of contact of said materials.
Claim 6
Dependent Claim
44 words
A decorative acoustic panel as in claim 1 wherein blocking strips of substantially the same thickness as said core are affixed to said backing sheet by which said panel may be mounted, said honeycomb spacing material being positioned over and affixed to said strips.
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) | 1977-07-08 | 1978-01-07 | 1978-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-08 | 1982-01-07 | 1982-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-08 | 1986-01-07 | 1986-07-09 | $7700.00 | Window Closed / Lapsed |