Boot with tightening system with memorization of tension

A boot comprising:

• an external sole;
• an upper extending upwardly from said sole, said upper comprising a supple material, said upper having a forwardly facing opening to enable insertion and removal of a wearer's foot within the boot, said upper further comprising two quarters, said two quarters forming said opening;
• an opening and closing system for connecting said two quarters of said upper, said opening and closing system comprising:
• a series of return elements fixed on each of said quarters;
• a link forming a closed circuit and being laced around and connecting a plurality of said return elements;
• a tightening and latching device connected to said link;
• and
• a fixed complementary gripping device, fixed to the boot, said tightening and latching device being engagable with said fixed complementary gripping device;
• said tightening and latching device comprising a means for tightening and latching said link and for moving said quarters in a direction toward each other for ensuring retention of the foot within the boot, said tightening and latching device comprising means for latching said link in position under the effect of a predeterminate tensioning force;
• said opening and closing system further comprising a progressive adjustment mechanism independent of said tightening and latching device for memorizing said predeterminate tensioning force of said tightening and latching device;
• said tightening and latching device and said fixed complementary gripping device comprising means for facilitating detachment of said tightening and latching device from said fixed complementary gripping device without affecting said memorizing of said predeterminate tensioning force of said progressive adjustment mechanism;
• said tightening and latching device comprising a tensioning lever connecting an end of said closed circuit formed by said link, said tensioning lever having a removable connectable end, said removable connectable end comprising a part of said means for detaching;
• said fixed complementary gripping device having a portion complementary to said removable connectable end of said tensioning lever, said complementary portion comprising another part of said means for detaching;
• and
• said removable connectable end being removably attachable to said complementary portion of said complementary gripping device for enabling said tensioning lever to be attached to said fixed complementary gripping device.