US3698145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hollow structure with core of interwoven strips
Assignee: UK Secretary of State for Defence
•
Filing: 1970-08-03
•
Granted: 1972-10-17
•
Expires: 1990-08-03
Abstract
Abstract A liner for a wall is made from strips of rigid material bent into a rectangular wave form and woven to form two substantially plane surfaces with chambers in between. The strips are perforated and attached to a backing member either (a) with the perforations facing away from the backing member to act as an acoustic liner, or (b) with the perforations in contact with the backing member and aligned with perforations therein for supply of cooling fluid, so that the structure can be used as an impingement cooled heat shield.
Inventors
- 👤 Paul Newman
- 👤 Maxwell John Holland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:45
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/30; E04C2/40; E04B; E04B1/00; E04B1/62; E04B1/74; E04C2/34; E04C2/3405; F; F16; F16L; F16L59/00; F16L59/06; F28; F28F; F28F3/00; F28F3/02; F28F3/025; F28F3/027; E04C2002/3444; E04C2002/3461
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
185 words
A hollow structure comprising a plurality of longitudinally and transversely arranged and interwoven strips of relatively rigid material, said strips being of the same width and each strip being of a rectangular wave-form so that each strip has successive top and bottom portions lying in spaced apart parallel planes and interconnected by vertical web portions, the longitudinal strips and the transverse strips being interwoven in such a manner that the top portions of any one longitudinal strip overlie aligned bottom portions of adjacent transverse strips, and the bottom portions of said longitudinal strip are overlaid by top portions of said adjacent transverse strips, each top portion of any strip being congruent with the bottom portion overlaid by it, and all of the vertical web portions being of the same height, said interwoven strips forming substantially closed chambers in which each web forms a common wall for two adjacent chambers, and all the top and bottom portions of the strips being contiguous with the top and bottom portions respectively of the adjacent longitudinal and transverse strips to form two continuous surfaces in spaced apart parallel planes.
Claim 2
Dependent Claim
185 words
A hollow structure comprising a plurality of longitudinally and transversely arranged and interwoven strips of relatively rigid material, said strips being of the same width and each strip being of a rectangular wave-form so that each strip has successive top and bottom portions lying in spaced apart parallel planes and interconnected by vertical web portions, the longitudinal strips and the transverse strips being interwoven in such a manner that the top portions of any one longitudinal strip overlie aligned bottom portions of adjacent transverse strips, and the bottom portions of said longitudinal strip are overlaid by top portions of said adjacent transverse strips, each top portion of any strip being congruent with the bottom portion overlaid by it, and all of the vertical web portions being of the same height, said interwoven strips forming substantially closed chambers in which each web forms a common wall for two adjacent chambers, and all the top and bottom portions of the strips being contiguous with the top and bottom portions respectively of the adjacent longitudinal and transverse strips to form two continuous surfaces in spaced apart parallel planes.
Claim 3
Dependent Claim
45 words
A hollow structure according to claim 1 and wherein one of said surfaces is attached to a backing member which is in the form of a ducting and the other one of which presents a smooth surface to a flow of fluid in the ducting.
Claim 4
Dependent Claim
20 words
A hollow structure according to claim 2 and wherein the strips are metallic and are rivetted onto a backing plate.
Claim 5
Dependent Claim
69 words
A hollow structure according to claim 2 and wherein means are provided defining perforations in both the backing member and in one of the surfaces formed by the strips and the strips are attached to the backing member so that said one perforated surface contacts the backing member with the perforations in the surface aligned with those in the backing member for the passage therethrough of a cooling fluid.
Claim 6
Dependent Claim
30 words
A hollow structure according to claim 4 and wherein the backing member comprises two spaced apart walls with passages therebetween for the supply of a cooling fluid to the perforations.
Claim 7
Dependent Claim
38 words
A hollow structure according to claim 1 and wherein means are provided defining perforations in one of the surfaces formed by the strips, and a backing member attached to the other of the surfaces formed by the strip.
Claim 8
Dependent Claim
24 words
A hollow structure according to claim 6 and wherein the areas of the perforations total substantially one quarter of the area of the surface.
Claim 9
Dependent Claim
19 words
A hollow structure as claimed in claim 6 and in which the strips are made from a non-metallic material.
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) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |