US3767499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making porous laminate
Assignee: Individual
•
Filing: 1971-09-09
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Granted: 1973-10-23
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Expires: 1991-09-09
Abstract
Abstract An apertured laminate which may be used as a face sheet of a honeycomb core sound suppression panel for a jet aircraft engine is formed from a plurality in excess of two superposed layers of thin, ribbon-like bands of selected widths, the bands of each layer being parallel and spaced apart by gaps of selected widths. The bands of each layer are disposed at different, selected angles to those in each of the other layers, and the gaps in successive layers are arranged to intersect and register at selected common points to define apertures of selected size, shape and distribution in the resultant laminate.
Inventors
- 👤 M Koss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:45
CPC Classifications
B; B29; B29C; B29C70/00; B32; B32B; B32B3/00; B32B3/26; B32B3/30; B32B5/00; B32B5/02; B32B5/12; B32B5/22; B32B5/24; B32B5/26; B29K; B29K2309/00; B29K2309/08; B32B2307/00; B32B2307/10; B32B2307/102; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24058; Y10T428/24074; Y10T428/24149; Y10T428/24273; Y10T428/24298; Y10T428/24306
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
241 words
The method of making an apertured laminate for use as the facing sheet for a sound absorptive panel having a backing sheet, a resonant chamber, and a facing sheet, said facing sheet having apertures therein of selected size, shape and distribution, which method comprises: arranging a first plurality of bands of selected material and of selected widths in parallel, side-byside relation, thereby comprising a first layer of said bands, superimposing upon the bands of said first layer a second plurality of bands of selected material and of selected widths, also in parallel, side-by-side relation, thereby comprising a second layer of such bands, superimposing upon the bands of said second layer a third plurality of bands of selected material and of selected widths, also in parallel, side-by-side relation, thereby comprising a third layer of such bands, laterally adjacent bands of each of said layers spaced apart by selected widths to form gaps therebetween, the bands of each of said layers being disposed at a selected anglE to the bands of each of the other layers, and so arranged that selected gaps in all of the layers intersect at common, selected points in the resulting laminate formed by the superpositioning of such layers of bands, thereby to form at each such selected point, an opening of selected size, shape and distribution in the laminate, and impregnating the laminate with a binder to band all of said bands together into an integral, apertured laminate.
Claim 2
Independent Claim
241 words
The method of making an apertured laminate for use as the facing sheet for a sound absorptive panel having a backing sheet, a resonant chamber, and a facing sheet, said facing sheet having apertures therein of selected size, shape and distribution, which method comprises: arranging a first plurality of bands of selected material and of selected widths in parallel, side-byside relation, thereby comprising a first layer of said bands, superimposing upon the bands of said first layer a second plurality of bands of selected material and of selected widths, also in parallel, side-by-side relation, thereby comprising a second layer of such bands, superimposing upon the bands of said second layer a third plurality of bands of selected material and of selected widths, also in parallel, side-by-side relation, thereby comprising a third layer of such bands, laterally adjacent bands of each of said layers spaced apart by selected widths to form gaps therebetween, the bands of each of said layers being disposed at a selected anglE to the bands of each of the other layers, and so arranged that selected gaps in all of the layers intersect at common, selected points in the resulting laminate formed by the superpositioning of such layers of bands, thereby to form at each such selected point, an opening of selected size, shape and distribution in the laminate, and impregnating the laminate with a binder to band all of said bands together into an integral, apertured laminate.
Claim 3
Dependent Claim
42 words
The method defined in claim 1 wherein the widths of the bands, and the spacing between laterally adjacent bands in the same layer are varied to thereby predeterminedly vary the size and shape of the apertures and their location in the laminate.
Claim 4
Dependent Claim
31 words
The method defined in claim 1 wherein selected ones of the bands are of varied strength, thereby varying the strength of the completed laminate in the direction of such varied bands.
Claim 5
Dependent Claim
36 words
The method defined in claim 1 wherein edges of bands defining the sides of all of the gaps intersecting at a common point to provide an aperture in the laminate, define the sides of such aperture.
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) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |