Local connection of sheets onto one another, method and apparatus for the implementation thereof
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United States of America Patent
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Oct 24, 2017
Grant Date -
Apr 10, 2014
app pub date -
Jun 8, 2012
filing date -
Jun 9, 2011
priority date (Note) -
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Abstract
A local connection of contact surfaces of top and bottom sheets is formed in a defined connection zone. The zone is polygonal and the top and bottom sheets jointly form within the periphery of this zone a connecting lip with their first side faces located opposite one another cut obliquely through their sheet thickness. These first side faces of the sheets and their adjacent obliquely-oriented second side faces in the zone are complementarily beveled in the form of a conical wall running downwards and inwards, so that in the vicinity of these second neighboring side faces the underside of the bottom sheet protrudes inwards past the top surface of the connecting lip at the location of the top outside edges of its first side faces. A method and an apparatus are arranged to implement the local connection.
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