초록 ▼

A blind setting rivet assembly capable of permanently fastening one or more sheet metal work pieces or the like together is disclosed. The rivet assembly may be self tapping and may also provide a hollow cylindrical threaded bolt head onto which a nut may be affixed to provide a means to removably a

A blind setting rivet assembly capable of permanently fastening one or more sheet metal work pieces or the like together is disclosed. The rivet assembly may be self tapping and may also provide a hollow cylindrical threaded bolt head onto which a nut may be affixed to provide a means to removably attach other work pieces, components or the like. The rivet assembly comprises a rivet body having a hollow tubular sleeve and an enlarged flattened head. The rivet body surrounds a mandrel which may have a weakened area of reduced diameter to allow detachment of the mandrel shaft following application of sufficient axial force to the shank. This application of force sets the rivet by causing a tapered shoulder section of the mandrel to deform the rivet sleeve. The mandrel shank may be terminated in a screw tip. This screw tip punctures, spreads, and self-taps an aperture in the work pieces through which the rivet sleeve passes. The mandrel's shank may have a weakened area of reduced diameter adjacent to the screw tip which allows detachment of shaft following application of sufficient axial force to the shank. This application of force causes the tapered shoulder section of the screw tip to compress and deform the rivet sleeve which sets the rivet.

대표청구항 ▼

[ What is claimed is:] [1.] A blind setting bolt rivet assembly, comprising:a hollow rivet body having upper and lower ends and an enlarged flattened head, said lower end comprising a hollow tubular sleeve having an inner diameter, and said upper end comprising a hollow cylindrical threaded bolt hea

[ What is claimed is:] [1.] A blind setting bolt rivet assembly, comprising:a hollow rivet body having upper and lower ends and an enlarged flattened head, said lower end comprising a hollow tubular sleeve having an inner diameter, and said upper end comprising a hollow cylindrical threaded bolt head onto which a nut may be removably affixed to secure one or more work pieces or components wherein said enlarged flattened head engages the surface of the workpiece to prevent rotation of said bolt rivet assembly when the nut is tightened onto and loosened from said bolt head; anda mandrel disposed longitudinally within said rivet body comprising a shoulder section having an outer diameter greater than the inner diameter of said sleeve so that said shoulder section radially compresses and spreads the lower end of said sleeve as said mandrel is retracted rearward relative to said rivet body, and a shank having an area of reduced diameter spaced rearward from said shoulder section and sized to allow said shoulder section of said mandrel to be detached from the shank upon application of a predetermined tensile force to the shank.