Closure construction having back-up support means

专利名称：Closure construction having back-up

support means

发明人：Gary M. Baughman申请号：US06/777407申请日：19850918公开号：US04588103A公开日：19860513

摘要：A closure and boss combination for providing an internally threaded outlet in adrum end includes a raised metal boss formed in the drum end and configured with a pairof concentric axially extending annular walls connected by an annular ring-shaped topsurface. Securely crimped within the raised metal boss is a synthetic material closurewhich includes an internal series of threads surrounded by a crimping flange whichincludes on its outer diameter surface a series of serrations configured with alternatingrecesses and protruding portions. The flange includes an interior support surface which issubstantially concentric with the outer surface of the serrations and the inner, axiallyextending wall portion of the boss is contiguous with this inner support surface in orderto provide back-up support and preclude close-in of the closure and distortion of theclosure threads during the crimping operation and during subsequent stress-inducingoperations such as exposure to high- temperature sources.

申请人：RIEKE CORPORATION

代理机构：Woodard, Weikart, Emhardt & Naughton

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