Patent ID: 8029223
Filing Date: 2011-10-04
Classification: F16B

Abstract:
1. A fastener combination comprising a screw, having a shaft and a head, and a separate circular conical gasket on the shaft that can rotate relative to the head and is or can be guided to a bottom of the screw head for fastening a component on a sub-structure under a tight compression of the conical gasket to the component, the gasket comprises a conical flat metal ring having a cone angle (α 2 ) measured in reference to a line perpendicular to an axis of the gasket and a bottom facing the component to be fastened, the bottom conically expands and includes an elastomer seal connected thereto, the screw head ( 36 , 66 ) is embodied at a bottom ( 34 , 64 ) thereof around the shaft ( 32 ) as an upwardly directed cone-shaped recess having a cone angle (αl) measured in reference to a line perpendicular ( 31 ) in reference to the screw axis ( 33 ) tapering in a direction of a top ( 38 , 68 ) of the screw head ( 36 , 66 ) and the cone angles (α 1 , α 2 ) are equal such that the bottom ( 34 , 64 ) of the screw head ( 36 , 66 ) and the conical metal ring ( 41 , 51 ) are mutually in planar contact.