Patent ID: 8092135

Claim:
A fastening system for fastening two elements together, comprising: a rod-like member ( 1 ) having opposite ends ( 2 , 3 ) which are aligned on a first longitudinal axis (X-X) and a threaded portion ( 4 ) formed in the region of a first end ( 2 ), the rod-like member ( 1 ) having a tapered portion ( 5 ) formed in the external wall of the rod-like member ( 1 ), the tapered portion ( 5 ) having the vertex of its taper facing towards the threaded portion ( 4 ) and a taper angle (a), measured relative to said first longitudinal axis (X-X); a first element ( 13 ) of said two elements having a plurality of through-holes ( 18 ), each through-hole ( 18 ) being engageable with a form fit by the tapered portion ( 5 ) of said rod like member ( 1 ), a second element ( 12 ) of said two elements having a plurality of threaded holes ( 16 ) each threaded hole ( 16 ) being engageable, with a male-and-female screw connection, by the threaded portion ( 4 ) of said rod-like member ( 1 ), each through-hole ( 18 ) being aligned with a respective threaded hole ( 16 ) along a second longitudinal axis (Y-Y), said first element ( 13 ) is a magnetic pole piece of a magnetic appliance and the second element ( 12 ) of the two elements is a frame of the magnetic appliance, the plurality of through-holes ( 18 ) have an inlet cross-section (Sin) and an outlet cross-section (S out ), with reference to the direction of insertion of the rod-like member ( 1 ) in the through-hole ( 18 ), and the tapered portion ( 5 ) of the rod-like member ( 1 ) extends between a larger cross-section (S max ) and a smaller cross-section (S min ), the inlet cross-section (S in ) of the through-hole ( 18 ) has dimensions such as to permit the insertion of the smaller cross-section (S min ) of the rod-like member ( 1 ) and at the same time, the outlet cross-section (S out ) of the through-hole ( 18 ) has dimensions such as to prevent the passage of the larger cross-section (S max ) of the rod-like member, said rod-like member ( 1 ) comprises engagement means ( 8 ) formed in the region of the second end ( 3 ), wherein said engagement means ( 8 ) comprise an axial cavity ( 6 ) in which a female thread ( 8 A) is formed.