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1. (WO1998052744) COMPOSITE STRUCTURE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1998/052744 International Application No.: PCT/GB1998/001377
Publication Date: 26.11.1998 International Filing Date: 14.05.1998
Chapter 2 Demand Filed: 02.12.1998
IPC:
B32B 5/26 (2006.01) ,B63G 8/34 (2006.01) ,G10K 11/16 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
32
LAYERED PRODUCTS
B
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
5
Layered products characterised by the non-homogeneity or physical structure of a layer
22
characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous
24
one layer being a fibrous or filamentary layer
26
another layer also being fibrous or filamentary
B PERFORMING OPERATIONS; TRANSPORTING
63
SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
G
OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS; MINE-LAYING; MINE-SWEEPING; SUBMARINES; AIRCRAFT CARRIERS
8
Underwater vessels, e.g. submarines
28
Arrangement of offensive or defensive equipment
34
Camouflage
G PHYSICS
10
MUSICAL INSTRUMENTS; ACOUSTICS
K
SOUND-PRODUCING DEVICES;  METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
11
Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
16
Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
Applicants:
THE SECRETARY OF STATE FOR DEFENCE [GB/GB]; Defence Evaluation & Research Agency Ively Road Farnborough Hampshire GU14 0LX, GB (AllExceptUS)
SMITH, Colette, Marie, Claude [GB/GB]; GB (UsOnly)
HOUSE, John [GB/GB]; GB (UsOnly)
Inventors:
HOUSE, John; GB
SMITH, Charles; null
Agent:
SKELTON, S., R.; D/IPR Formalities Section (DERA) Poplar 2, MOD Abbey Wood #19 P.O. Box 702 Bristol BS34 8JH, GB
Priority Data:
9709998.019.05.1997GB
Title (EN) COMPOSITE STRUCTURE
(FR) STRUCTURE COMPOSITE
Abstract:
(EN) A composite structure (1) has first and second fibre reinforced composite layers (2, 3). Between the composite layers (2, 3) through direction support members (4) are provided, together with an absorbent material (5). The support members (4) are curved, such that the structure is compliant in the through direction of the structure and has a high bending stiffness perpendicular to the through direction. A structure of this type can be used for making machine rafts with inherent noise and vibration damping, or secondary structures on submarines such as rudders ot fins, with an appropriate absorbent material according to the use.
(FR) La présente invention se rapporte à une structure composite (1) pourvue d'une première et d'une seconde couches fibreuses composites (2, 3) renforcées comprenant une matière absorbante (5), et des éléments de soutien (4) transversaux disposés entre lesdites couches. Les éléments de soutien (4) sont courbés de manière à ce que la structure soit souple dans le sens transversal avec une forte rigidité au pliage dans le sens perpendiculaire à ce sens transversal. Une structure de ce genre peut être utilisée dans la construction des supports flottants pour la machinerie avec des capacités inhérentes d'absorption de bruits et de vibrations, ou dans celle des structures secondaires de sous-marins telles que les gouvernails de direction ou les dériveurs, en employant un matériau absorbant approprié pour chaque utilisation.
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Designated States: AU, GB, JP, NO, RU, US
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
AU1998074397