Drum ring and lever system
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United States of America Patent
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Sep 24, 2013
Grant Date -
Dec 3, 2009
app pub date -
May 28, 2009
filing date -
May 29, 2008
priority date (Note) -
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Abstract
A two piece clamping ring and lever system for retaining removable lids to containers comprises a split circular ring. The ring first end includes outwardly extending receiving hooks. The second end of the ring includes pivot bosses comprising a pivot shaft and enlarged button. A lever with pivot shafts engages with the ring first end. When the lever is closed contact surfaces on an inwardly projecting transverse beam on the underside of the lever and outwardly projecting beams on the ring first end engage to relieve stresses on the lever pivot shafts and ring first end pivot receiving hooks. A second stress transfer relationship is engaged as an inwardly facing transverse beam extending between the sidewalls of the second end is slideably engaged into corresponding receiving channels outwardly facing from the ring first end thereby relieving stresses on the pivot bosses and corresponding longitudinally extending lever bearing surface.
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