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1. (WO1991017934) METHOD AND APPARATUS FOR STRUCTURAL ATTACHEMENT OF POLYCARBONATE PLASTIC SHEET TO SUPPORTING STRENGTH MEMBERS AND AIR CARGO CONTAINER UTILIZING SAME
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/017934 International Application No.: PCT/US1991/003577
Publication Date: 28.11.1991 International Filing Date: 21.05.1991
IPC:
B65D 88/14 (2006.01) ,B65D 88/24 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
65
CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
D
CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
88
Large containers
02
rigid
12
specially adapted for transport
14
by air
B PERFORMING OPERATIONS; TRANSPORTING
65
CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
D
CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
88
Large containers
16
flexible
22
specially adapted for transport
24
by air
Applicants:
LOOKER, Robert [US/US]; US
Inventors:
LOOKER, Robert; US
Agent:
DICKERSON, Robert, W. ; 611 West Sixth Street 34th Floor Los Angeles, CA 90017, US
Priority Data:
527,04222.05.1990US
Title (EN) METHOD AND APPARATUS FOR STRUCTURAL ATTACHEMENT OF POLYCARBONATE PLASTIC SHEET TO SUPPORTING STRENGTH MEMBERS AND AIR CARGO CONTAINER UTILIZING SAME
(FR) PROCEDE ET APPAREIL DE FIXATION STRUCTURELLE DE PLAQUES DE PLASTIQUE POLYCARBONATE A DES ELEMENTS DE RESISTANCE ET CONTENEURS POUR FRET AERIEN UTILISANT LEDIT PROCEDE
Abstract:
(EN) In order to be able to utilize polycarbonate sheet material (12) as a structural (i.e. stress-bearing) component in an assembly comprising polycarbonate (12) and metal (10) components, as, for example, in a monocoque air cargo container wherein the polycarbonate sheet material (12) is used as the 'skin' of the structure, an attachment assembly is utilized to provide a rigid, stress-bearing joint without inducing crack-inducing high levels of localized stress on the polycarbonate sheet (12). The attachment assembly (14) comprises a significant area of overlap between the polycarbonate (12) and metal (10) components, and an attachment strip (14) which substantially covers the attachment area. Rivets or bolts (16) are inserted through oversized holes in the metal (10), polycarbonate (12), attachment strip assembly (14) and then torqued. The compressive forces exerted thereby create the rigid joint (even in an environment where the joint is subject to 180 °F± temperature cycling such that the different coefficients for thermal expansion for the polycarbonate vs. the metal become significant) but are spread over a sufficiently large area so as to avoid high, localized stress levels which would induce the polycarbonate to crack.
(FR) Afin de pouvoir utiliser des plaques de polycarbonate (12) en tant qu'élément structurel (c.-à-d. soumis à des contraintes) dans un ensemble comprenant des éléments de polycarbonate (12) et métallique (10) comme, par exemple, dans un conteneur pour frêt aérien monocoque dans lequel le polycarbonate en plaques (12) est utilisé comme 'peau' de la structure, on utilise un ensemble de fixation de manière à obtenir une jointure rigide, soumise à des contraintes, sans induire des degrés élevés de contraintes localisées, provoquant des fêlures, sur la plaque de polycarbonate (12). L'ensemble de fixation (14) comporte une zone considérable de chevauchement entre les éléments de polycarbonate (12) et métallique (10) et une bande de fixation (14) qui recouvre pratiquement la zone de fixation. Des rivets ou des chevilles (16) sont insérés dans des trous surdimensionnés percés dans le métal (10), le polycarbonate (12) et l'ensemble bande de fixation (14), puis soumis à un effet de torsion. Les forces de compression ainsi exercées créent la jointure rigide (même dans un environnement ou ladite jointure est soumise à un cycle de température de ±180 °F de telle sorte que les différents coefficients d'expansion thermique pour le polycarbonate par rapport au métal deviennent significatifs), mais elles sont réparties sur une zone suffisamment grande de manière à éviter des degrés de contrainte élevés et localisés qui provoqueraient la fêlure du polycarbonate.
Designated States: CA, JP, NO
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
NO19920281EP0484502CA2063392