Receptacles – Closures – Removable closure guided in rotary movement
Patent
1985-10-21
1986-12-02
Kittle, John E.
Receptacles
Closures
Removable closure guided in rotary movement
428 35, 29453, B65D 1700
Patent
active
046258892
ABSTRACT:
A plastic drum and closure assembly for providing a replaceable two-inch straight pipe thread flange includes a synthetic material drum having a drum end which is molded with a two-inch buttress thread opening and an internally splined raised annular boss which is suitably designed and arranged to receive an externally splined plastic flange member which includes an internal series of two-inch straight pipe threads. The flange is secured to the raised annular boss by means of a metal retaining ring which is shaped and conforms to the outer lip portion of the flange thereby providing an outwardly-deformable surface and an inner back-up surface. Installation of the flange into the raised annular boss begins with the alignment of the internal and external splines and once the flange is fully seated within the raised annular boss the metal retaining ring is crimped so as to conform the outwardly radiating lip portion of the flange to the lip portion of the raised annular boss thereby providing a liquid-tight interface between the two members. The style of the retaining ring and the shape and contour of the raised annular boss permit the plastic flange to be removed, once damaged, and a replacement flange to be installed and reassembled.
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Kittle John E.
Rieke Corporation
Ryan Patrick J.
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