Patent ID: 6901836
Filing Date: 2005-06-07
Classification: B23D,B26F,F42B,Y10T

Abstract:
1. A device comprising a first support element ( 100 ), a second support element ( 110 ) which is separate from said first support element ( 100 ), a structure ( 10 ) comprising pretensioned fibers able of rupture when bent with a radius of curvature which is smaller than a predetermined threshold, said pretensioned fibers being placed in tension between said two support elements ( 100 , 110 ), a beam ( 150 ) inserted between said two support elements ( 100 , 110 ) in parallel with the structure so as to work in compression between said two support elements ( 100 , 110 ), and a rupture device ( 20 , 30 , 40 , 50 ) comprising two stressing members ( 20 , 30 ) and operating means ( 40 ), said two stressing members ( 20 , 30 ) being arranged one on each side of the fibers ( 10 ), said stressing members being able to relative displacement toward each other, one or said stressing members having an edge directed towards the fibers, said edge having a radius of curvature which is smaller than the minimum radius that the fibers can tolerate before they rupture in bending, and said operating means ( 40 ) being designed to bring about the relative displacement of said stressing members ( 20 , 30 ) so as to bend and to rupture said structure in tension when said pretensioned fibers are bent with a radius of curvature which is smaller than said predetermined threshold.