公开(公告)号：US3669815A

公开(公告)日：1972-06-13

申请号：US3669815D

申请日：1971-02-10

Applicant: BALSA DEV CORP

Inventor： DESAI RAMESH R ,  DOHN GEORGE D

IPC: F17C3/02 ,  F17C13/00 ,  B65D25/18

CPC classification number: F17C3/022 ,  F17C13/001 ,  F17C2201/0119 ,  F17C2201/032 ,  F17C2201/052 ,  F17C2203/012 ,  F17C2203/0333 ,  F17C2203/0341 ,  F17C2203/0345 ,  F17C2203/0354 ,  F17C2203/0358 ,  F17C2203/0604 ,  F17C2203/0648 ,  F17C2221/033 ,  F17C2223/0161 ,  F17C2223/033 ,  F17C2260/011 ,  F17C2260/033 ,  F17C2260/036 ,  F17C2270/011 ,  F17C2270/0147 ,  F17C2270/0171 ,  F17C2270/0173 ,  Y10S220/901 ,  Y10S220/902

Abstract: A STRUCTUREAL LIGHT-WEIGHT PANEL OF HIGH STRENGTH, HAVING THERMAL INSULATION PROPERTIES THAT RENDER THE PANEL PARTICULARLY SUITABLE FOR CRYOGENIC AND ELEVATED TEMPERATURE APPLICATIONS. THE PANEL IS CONSTITUTED BY A COMPOSITE CORE BONDED TO A CARRIER MEMBRANE OR LAMINATED TO FACING SKINS, THE CORE INCLUDING AT LEAST ONE LAYER FORMED BY A SERIES OF BALSA BEAMS IN SPACED PARALLEL RELATION, THE SPACING BETWEEN THE BEAMS BEING FILLED WITH SLABS OF FOAM PLASTIC MATERIAL WHOSE K-FACTOR IS SIMILAR TO THAT OF BALSA, WHEREBY THE OVERALL THERMAL INSULATING CHARACTERISTICS OF THE COMPOSITE CORE ARE EFFECTIVELY EQUIVALENT TO THAT OF A HOMOGENEOUS CORE COMPOSED ENTIRELY OF FOAM PLASTIC MATERIAL, WHEREAS THE STRUCTURAL CHARACTERISTICS OF THE COMPOSITE CORE ARE FAR SUPERIOR THERETO.