Self-closing ski boot

Claim 1

A shell-type ski-boot opening at the rear, which comprises a rigid plastic molded lower portion, an upper fulcrumed on said lower portion which consists of a front quarter and of a rear quarter pivotally interconnected, and means for closing the upper which are actuated automatically when said front quarter of the upper is bent forwards, said automatic closing means comprising: a pair of cables having one end anchored to the rear quarter of said upper and the other end attached to a traction device disposed between said front quarter of the upper and the toe end of said rigid lower portion of the shell, said traction device comprising two telescopically interfitting members having their outer ends pivotally attached to said upper and to said lower portion, respectively, the member attached to said upper comprising two sets of pulleys constituting a pulley-block for each cable, the first set of pulleys being rotatably mounted on an axle movable in guide means comprising a rectilinear section parallel to the direction of relative movement of said telescopically interfitting members, another section of said guide means, on the toe end side, being curved, the telescopic member attached to said lower portion of the shell comprising stop means overlying said rectilinear section of said guide means and constituting abutment means for said movable set of pulleys, said curved section of said guide means shunting said abutment means so that said abutment means can move past said pulleys when the axle of said movable pulleys engage said curved section of said guide means, said cables being anchored to the telescopic member attached to said upper, and automatic means for interlocking said telescopic members when said telescopic members are in their position of maximum mutual engagement.