US3756346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acoustical panel
Assignee: BP Chemicals Hitco Inc
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Filing: 1972-07-03
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Granted: 1973-09-04
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Expires: 1992-07-03
Abstract
Abstract An acoustical panel, as disclosed, comprises a woven fabric having internal ribs integrally woven with opposite planar faces so as to form compartments which trap and dissipate sound wave energy passed by at least one of the faces. At least one of the faces, and in some cases selected ones of the internal ribs, are provided with a controlled porosity by being woven of combination yarns, each of which comprises a low-twist core yarn and at least one other low-twist yarn wound around the core yarn. The yarns which are wound around the core yarns prevent the core yarns from flattening excessively during weaving and subsequent resin impregnation and thereby prevent the resin from filling the voids between yarns. In one arrangement each combination yarn is comprised of a core yarn of fiberglass or other appropriate material having a smaller yarn of nylon or other appropriate material served thereon. In an alternative arrangement each combination yarn comprises a plurality of yarns braided onto the outside of a larger core yarn.
Inventors
- 👤 L Burbank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:46
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/82; E04B1/84; E04B1/86; E04B2001/8423; E04B2001/8457; E04B2001/8476; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24174; Y10T428/24182; Y10T428/30
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
64 words
An acoustical panel comprising a woven fabric having a generally planar face portion and a plurality of internal rib portions integrally woven with and extending from the face portion to form acoustical compartments within the fabric, at least the face portion being woven of combination yarns, each of which comprises a core yarn and at least one other yarn wound around the core yarn.
Claim 2
Dependent Claim
64 words
An acoustical panel comprising a woven fabric having a generally planar face portion and a plurality of internal rib portions integrally woven with and extending from the face portion to form acoustical compartments within the fabric, at least the face portion being woven of combination yarns, each of which comprises a core yarn and at least one other yarn wound around the core yarn.
Claim 3
Dependent Claim
20 words
The invention defined in claim 1, wherein at least some of the rib portions are woven of the combination yarns.
Claim 4
Dependent Claim
25 words
The invention defined in claim 1, wherein each of the combination yarns comprises a core yarn having a serving yarn served about the outside thereof.
Claim 5
Dependent Claim
27 words
The invention defined in claim 1, wherein each of the combination yarns comprises a core yarn having a plurality of braiding yarns braided about the outside thereof.
Claim 6
Dependent Claim
23 words
The invention defined in claim 1, wherein each of the core yarns has between 1 and 4 twists per inch of length thereof.
Claim 7
Dependent Claim
12 words
The invention defined in claim 1, wherein the fabric is resin impregnated.
Claim 8
Dependent Claim
63 words
An acoustical panel comprising a woven fabric having generally planar front and back face portions and a plurality of rib portions integrally woven with and extending between the front and back face portions, at least a portion of the fabric being woven of yarns, each of which comprises a core yarn and a serving yarn served on the outside of the core yarn.
Claim 9
Dependent Claim
63 words
An acoustical panel comprising a woven fabric having generally planar front and back face portions and a plurality of rib portions integrally woven with and extending between the front and back face portions, at least a portion of the fabric being woven of yarns, each of which comprises a core yarn and a serving yarn served on the outside of the core yarn.
Claim 10
Dependent Claim
24 words
The invention defined in claim 7, wherein each of the core and serving yarns has less than 5 twists per inch of length thereof.
Claim 11
Dependent Claim
15 words
The invention defined in claim 7, wherein the core yarn is comprised of carbonaceous material.
Claim 12
Dependent Claim
46 words
The invention defined in claim 7, wherein the serving yarn has a diameter considerably smaller than the diameter of the core yarn and is served on the core yarn at the rate of between 5 and 15 turns per inch of length of the core yarn.
Claim 13
Dependent Claim
33 words
The invention defined in claim 10, wherein the core yarn comprises fiberglass having a diameter between 0.010 inch and 0.030 inch and the serving yarn comprises nylon of between 30 and 200 denier.
Claim 14
Dependent Claim
65 words
An acoustical panel comprising a woven fabric having generally planar front and back face portions and a plurality of rib portions integrally woven with and extending between the front and back face portions, at least a portion of the fabric being woven of yarns, each of which comprises a core yarn and a plurality of braiding yarns braided onto the outside of the core yarn.
Claim 15
Dependent Claim
65 words
An acoustical panel comprising a woven fabric having generally planar front and back face portions and a plurality of rib portions integrally woven with and extending between the front and back face portions, at least a portion of the fabric being woven of yarns, each of which comprises a core yarn and a plurality of braiding yarns braided onto the outside of the core yarn.
Claim 16
Dependent Claim
15 words
The invention defined in claim 10, wherein the core yarn is comprised of carbonacEous material.
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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) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |