Shock-absorbing device for a ski or the like

A shock-absorbing device for a gliding board, said device comprising:

• means for absorbing flexional and torsional forces imposed on the gliding board, said means comprises:
• two transmission rods laterally spaced apart, each of said transmission rods having a first end portion and a second end portion, said first end portions constituting fixed end portions and said second end portions constituting movable end portions;
• at least one fixed connection adapted to connect said first end portions of said two rods rigidly to the gliding board;
• at least one casing adapted to be connected rigidly to the gliding board at a certain distance longitudinally spaced from said fixed connection, said at least one casing having openings through which said second end portions are introduced, said at least one casing further having at least one recess for housing said second end portions of said two transmission rods, each of said recesses containing a viscoelastic material;
• each of said second portions of said transmission rods having a longitudinally extending sliding surface along a certain length and in contact with said viscoelastic material, said second portions of said transmission rods being arranged for rotational and translational movement in said at least one recess and being biased in shearing with said viscoelastic material during said movement.

In combination, a ski and a shock-absorbing device, said shock-absorbing device comprising:

• two transmission rods laterally spaced apart, each of said transmission rods having a first end portion and a second end portion, said first end portions constituting fixed end portions and said second end portions constituting movable end portions;
• at least one fixed connection connecting said first end portions of said two rods rigidly to said ski;
• at least one casing connected rigidly to said ski at a certain distance longitudinally spaced from said fixed connection, said at least one casing having openings through which said second end portions are introduced, said at least one casing further having at least one recess for housing said second end portions of said two transmission rods, each of said recesses containing a viscoelastic material;
• each of said second portions of said transmission rods having a longitudinally extending sliding surface along a certain length and in contact with said viscoelastic material, said second portions of said transmission rods being arranged for rotational and translational movement in said at least one recess and being biased in shearing with said viscoelastic material during said movement.