Abstract: A pipe coupling is disclosed, of the type comprising an annular elastic gasket fitted over the two adjacent pipe ends and tightened down with encircling clamp bands. The coupling includes a plastic band surrounding the elastic gasket, with overlapping ends tapered in thickness. The metal clamp bands encircle the plastic band and are retained in place by ridges forming channels on the outside surface of the plastic band.

Abstract: A pail-like container preferably made of plastic material is especially adapted to utilize a particular snap type cover of resilient metal material. The cover is shaped to form a peripheral channel with a bulbous, annular lower portion that is retained within an annular recess formed by two spaced apart annular ridge portions on the inner wall of the container near its open end. The first annular ridge portion provides a cam surface that helps to deform the bulbous lower portion of the cover temporarily and also slightly stretch the upper portion of the container circumferentially as the cover is installed on a container. The second annular ridge portion serves as a stop to limit the amount of insertion of the cover within the container and thereby provide a space underneath an outer strengthening bead on the cover to facilitate its removal.