Patent ID: 6907647

Claim:
Eyelet for reinforcing the area ( 21 ) around the edge of a hole ( 22 ) in a carrier web ( 20 ), with a diskless eyelet part ( 10 , 10 =), consisting of a plate ( 11 ), which rests on the visible side ( 23 ) of the carrier web ( 20 ); of a tubular neck ( 12 ), which passes through the hole ( 22 ); and of an arc-shaped transition ( 14 ) between the plate ( 11 ) and the neck ( 12 ); where the free end part ( 15 ) of the neck ( 12 ) is provided with projections ( 16 ), which extend in the axial and/or the radial direction; and where, after the riveting operation, a flanging of the neck ( 12 ) of the eyelet part ( 10 =) is present on the rear surface ( 24 ) of the carrier web ( 20 ), wherein the completed flanging of the neck ( 12 ) extends across more than a closed, ring-shaped profile ( 50 ) because practically the entire length ( 48 ) of the neck is rolled spirally into an interior ( 51 ) of the ring-shaped profile and the projections ( 16 ) of the end part ( 15 ) of the neck ( 12 ) are included in the spiral thus formed; wherein, in the spiral interior of the ring-shaped profile ( 50 ), the projections ( 16 ) of the neck ( 12 ) press against an opposing support surface ( 49 ) formed by the plate ( 11 ) or by the transition area ( 14 ), the area ( 21 ) of the carrier web ( 20 ) around the edge of the hole ending up between the projections and the support surface, areal compression points ( 40 ) thus being produced on the gripped carrier web ( 20 ), as a result of which a step-like increase ( 53 ) in the thickness of the web material is formed in front of the compression points; wherein, in the interior ( 51 ) of the ring-shaped profile, the end part ( 41 ) of the carrier web ( 20 ) extends beyond the areal compression points ( 40 ) to the edge of the hole and forms a segment of a ring conforming to the shape of the ring-shaped profile ( 50 ); and wherein, when tensile stresses are exerted on the carrier web, the projections ( 16 ) engage positively with the step-like increase ( 53 ) in the thickness of the web material and oppose the tensile forces, wherein the axial projections ( 16 ) on the neck consist of a pronged edge ( 19 ) at the end of the neck ( 12 ).