Gliding board, such as a ski, and a gliding board equipped with a boot-retaining assembly

A skiing assembly comprising:

• a ski for alpine skiing, said ski comprising:
• a longitudinal beam having front and rear ends and a central zone, the beam comprising a main core, a plurality of layers, and two lateral running edges;
• said plurality of layers comprising a running layer beneath the main core, and at least a plurality of reinforcing layers positioned above the main core;
• in the central zone, a secondary core being superposed and supported on the main core so as to form, in the central zone, a projecting rib having a reduced width relative to a width of the ski, said secondary core being positioned beneath at least one of said plurality of reinforcing layers;
• a plate positioned on said ski, said plate having front and rear mounting plates provided to receive front and rear retaining elements;
• and
• transverse journals traversing the rib and connecting said front and rear mounting plates to the rib.

A gliding board comprising:

• a front end, a rear end, and a longitudinally extending central zone, said central zone being spaced longitudinally from both said front and rear ends;
• a longitudinally extending main core extending through said central zone and forwardly and rearwardly of said central zone;
• at least one reinforcement layer covering said main core;
• a longitudinally extending rib, said rib comprising a secondary core contained longitudinally within said central zone, said secondary core being supported by said reinforcement layer at opposite longitudinal ends of said secondary core and along a length of said secondary core between said ends of said secondary core;
• said secondary core having a width less than a width of said main core throughout a length of said rib;
• at least one reinforcement layer covering said secondary core;
• and
• two longitudinally spaced journal housings positioned within said rib.

A gliding board comprising:

• a front end, a rear end, and a longitudinally extending central zone, said central zone being spaced longitudinally from both said front and rear ends;
• a lower beam assembly comprising:
• a longitudinally extending main core extending through said central zone and forwardly and rearwardly of said central zone, said main core comprising a foam material;
• at least one reinforcement layer covering said main core;
• a longitudinally extending rib projecting upwardly from said lower beam assembly, said rib being integrated, along a length of said rib, to said lower beam, said rib comprising a secondary core contained longitudinally within said central zone of the gliding board, said secondary core comprising a foam material;
• at least a second reinforcement layer positioned above said secondary core and extending downwardly laterally of both said secondary core and said main core.