Light weight hollow chamber constructional element

摘要

A heavy duty lightweight hollow component, comprising high strength material housing and cover parts (1,4) defining a cavity supported by a ribbed plastic structure (2), is new. A heavy duty lightweight hollow component consists of (a) a basin-shaped housing part (1) of high strength material, especially metal; (b) a ribbed plastic support structure, especially of thermoplastic, seated on and preferably joined to the inside of the housing part (1); and (c) a cover plate (4) or dome of high strength material, especially metal, which covers the space formed by the housing part (1) and the support structure (2) and which is joined at its edge to the rim (10) of the housing part (1). An Independent claim is also included for production of the above lightweight component.