Crushable core and cover assembly having an expanded elastomeric tubing and a chrushable core

摘要

A cover assembly including a crushable support (100) for supporting an elastomeric tube is described, the elastomeric tube being recoverable to at least a part of its original size and shape after collapse of said support, comprising: a plurality of substantially longitudinally extending portions (12); a plurality of connection portions (14), each longitudinally extending portion (12) being connected to, and spaced apart from neighbouring longitudinally extending portions (12) by at least one of said connection portions (14) to form a rigid structure; and said at least one of said connection portions (14) including at least one frangible zone (16). Methods of manufacturing the crushable support structure (100) are described.