Patent ID: 6709214
Filing Date: 2004-03-23
Classification: E04D,F16B,Y10S

Abstract:
A preassembled fixing element for fixing insulation on a solid substructure, the fixing element having a screw with a lens-shaped screw head and a shaft with a thread over at least a portion thereof, the fixing element comprising:a large-surface area washer defining a hole; a tubular extension disposed on the large-surface area washer around the hole to define a passage which is sufficiently large to receive the screw head therein, the tubular extension having an end segment, located opposite to the large-surface area washer, the end segment being configured to permit the passage of the shaft of the screw and to prevent the passage of the screw head therethrough, at least one rib disposed within the tubular extension, the at least one rib protruding radially inwardly into the passage; and wherein the at least one rib is shaped and dimensioned relative to the screw head so as to prevent the screw head from passing the at least one rib when moving toward the large-surface area washer, whereby, with the screw head positioned between the at least one rib and the end segment, the screw is adapted to be driven into the insulation by pushing the large-surface area washer toward the insulation via the at least one rib contacting the screw head.