Patent ID: 6183179
Filing Date: 2001-02-06
Classification: F16B

Abstract:
A blind rivet comprising a tubular sleeve (31) provided with a longitudinal bore, and a mandrel (32) having a head (33) of a diameter greater than the bore of the sleeve and a shank (36, 37) housed in said bore and extending from the bore at the side opposite the head of the mandrel,said tubular sleeve comprising a preformed head (43) at the end of the sleeve opposite the head of the mandrel and stop means (44) for engaging said shoulder such that movement of said mandrel through said sleeve causes this engagement to stretch said sleeve, said stop means arranged on the interior of the bore of the sleeve adjacent said preformed head (43),said mandrel comprising a shank having first and second portions (36, 37) respectively separated by a shoulder forming the end (36a) of said first portion, said shoulder being cooperable with said stop means (44) during stretching of said sleeve, and at least one rupture groove (34, 35) formed in said shank of said mandrel and positioned in said first portion of said shank between said shoulder and said head of said mandrel.