Multilevel sheet metal container with outwardly beaded end faces
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United States of America Patent
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Mar 3, 2015
Grant Date -
May 15, 2014
app pub date -
Jan 17, 2014
filing date -
May 14, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
A multilevel container having a circumferentially continuous wall or bottom elements of sheet metal with radially outwardly beaded end faces. The wall and bottom elements are placed on top of each other on butt joints so as to seal the end faces and are detachably braced with a minimum of one neighboring container level. The multilevel container also comprises one or more sealing rings and bracing components that act on neighboring end faces. In order to provide a readily manufacturable and form a stable multilevel container without multiple beads in alternating directions or weldings in the butt joint portions, a separate and independent shape retaining ring is provided. This ring reinforces the container and has shape retaining surfaces on its two end faces. In the region of their end faces, the neighboring wall and bottom elements are set on and tightly braced against the shape retaining surfaces of the reinforcing shape retaining ring. Radially inside or radially outside the reinforcing shape retaining ring, a separate sealing ring is inserted between the radially outwardly beaded sheet metal end faces of the neighboring bottom or wall elements of the multilevel container or between these end faces and the reinforcing shape retaining ring.
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