US4091160A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acoustical laminate
Assignee: Rohr Inc
•
Filing: 1976-03-31
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Granted: 1978-05-23
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Expires: 1996-03-31
Abstract
Abstract An acoustical laminate comprising multi-ply glass fabric impregnated with an epoxy resin and a method of manufacturing the laminate. The laminate may be bonded to suitable backing, such as a honeycomb core with a solid backing, to produce an acoustical panel. The panel provides excellent, substantially linear, sound absorption characteristics.
Inventors
- 👤 Muriel L. Koss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:18
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/003; B32; B32B; B32B3/00; B32B3/10; B32B3/12; B32B5/00; B32B5/22; B32B5/24; B32B5/26; 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; G; G10; G10K; G10K11/00; G10K11/16; G10K11/172; B29K; B29K2309/00; B29K2309/08; B32B2260/00; B32B2260/02; B32B2260/021; B32B2260/023; B32B2260/04; B32B2260/046; B32B2262/00; B32B2262/10; B32B2262/101; B32B2307/00; B32B2307/10; B32B2607/00; E04B2001/742; E04B2001/748; E04B2001/8457; E04B2001/8461; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24149; Y10T442/00; Y10T442/20; Y10T442/25; Y10T442/2926; Y10T442/2992
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
68 words
An acoustical laminate comprising at least two sheets of open weave glass fiber fabric impregnated with from about 13 to 32 weight percent cured epoxy resin, based on glass fabric weight, said laminate being porous to the extent of having an airflow resistance of about 2 to 60 rayls at an airflow velocity of about 17 cm/sec and having a thickness of from about 0.02 to 0.10 inch.
Claim 2
Dependent Claim
68 words
An acoustical laminate comprising at least two sheets of open weave glass fiber fabric impregnated with from about 13 to 32 weight percent cured epoxy resin, based on glass fabric weight, said laminate being porous to the extent of having an airflow resistance of about 2 to 60 rayls at an airflow velocity of about 17 cm/sec and having a thickness of from about 0.02 to 0.10 inch.
Claim 3
Dependent Claim
22 words
The acoustic laminate according to claim 1 wherein said glass fabric comprises at least two sheets of a leno weave glass fabric.
Claim 4
Dependent Claim
16 words
The acoustic laminate according to claim 1 wherein said epoxy resin comprises a Bisphenol-A type resin.
Claim 5
Dependent Claim
18 words
The acoustic laminate according to claim 1 wherein said epoxy resin comprises a Bisphenol-A Novolac type resin blend.
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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) | 1981-05-22 | 1981-11-21 | 1982-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-22 | 1985-11-21 | 1986-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-22 | 1989-11-21 | 1990-05-23 | $7700.00 | Window Closed / Lapsed |