Shoulder strap equipped with a shaping frame

Abstract

A carrying strap adjusted, in use, to be installed on the shoulder of a wearer, where the carrying strap has a shaping reinforcement having an inner surface and an outer surface, the reinforcement includes: an upper reinforcement portion located, in use, at the shoulder on which the carrying strap is installed, a front reinforcement portion which extends the upper reinforcement portion, the front reinforcement portion includes a support portion, where, along the upper reinforcement portion and the front reinforcement portion, the inner surface of the reinforcement is shaped as a portion of a Moebius strip, which inner surface, in use, is oriented towards the body of the wearer.

1 . A should strap of a carrier, comprising:
 a shaping frame having one same inner surface and one same outer surface,   the shaping frame comprising:
 an upper frame portion located, in use, at the level of the shoulder on which the shoulder strap is installed, 
 a front frame portion which extends the upper frame portion, which front frame portion extends downwards, and 
 the front frame portion comprises a support portion shaped such that, in use, the shoulder strap bears against a support surface of the carrier, 
   
       wherein along the upper frame portion and the front frame portion, the inner surface of the frame has the shape of a Moebius strip portion, which inner surface is, in use, oriented towards the body of the carrier. 
     
     
         2 . The shoulder strap according to  claim 1 , wherein:
 the upper frame portion has a first free end,   the front frame portion has a second free end,   the inner surface of the frame has the shape of a Moebius strip portion from the first free end to the second free end, such that said inner surface is twisted not only along the whole front frame portion, but also along the whole upper frame portion.   
     
     
         3 . The shoulder strap according to  claim 1 , wherein the shape of the inner surface of the frame is geometrically defined by the following characteristics:
 the inner surface is caused by a continuous rotation of a segment about its middle, the length of said segment corresponding to the width of said inner surface, and   said middle describes a trajectory describing a curve, and   which rotation is non-zero and in the same direction, along said trajectory.   
     
     
         4 . The shoulder strap according to  claim 3 , wherein the trajectory describes a flat curve or a left curve. 
     
     
         5 . The shoulder strap according to  claim 4 , wherein the trajectory describes a circular portion, or an ellipsis portion, or a logarithmic curved portion, or a hyperbole portion, or an arch portion of a cycloid curve. 
     
     
         6 . The shoulder strap according to  claim 4 , wherein the trajectory describes a helix portion, or a rational sextic portion, or a non-rational sextic portion. 
     
     
         7 . The shoulder strap according to  claim 3 , wherein the following characteristics also geometrically define the shape of the inner surface of the frame:
 the angular rotation speed of the segment, when its middle is moved along the trajectory, is uniform and non-zero along said trajectory, or   the angular rotation speed of the segment is variable and non-zero along said trajectory.   
     
     
         8 . The shoulder strap according to  claim 3 , wherein the length of the segment is constant or variable along the trajectory. 
     
     
         9 . The shoulder strap according to  claim 1 , wherein the front frame portion has a free end having a flared shape. 
     
     
         10 . The shoulder strap according to  claim 1 , wherein the upper frame portion has a free end curved upwards. 
     
     
         11 . The shoulder strap according to  claim 1 , wherein:
 a rear frame portion also extends the upper frame portion, which rear frame portion is adapted to extend, in use, downwards from the torso of the carrier, from the back face of said carrier,   the rear frame portion comprises a rear support portion shaped such that, in use, the shoulder strap bears against a rear support surface of the carrier located in a back region of the carrier or at the level of a lateral flank of said carrier.   
     
     
         12 . The shoulder strap according to  claim 1 , wherein the outer surface of the frame has the same shape as the inner surface of said frame. 
     
     
         13 . A load-removing equipment on the human body, comprising a left shoulder strap and a right shoulder strap, wherein each of said straps is in accordance with  claim 1 . 
     
     
         14 . A load-removing equipment on the human body, comprising one single shoulder strap, wherein said strap is in accordance with  claim 12 . 
     
     
         15 . A method for manufacturing a shoulder strap according to  claim 1 , comprising:
 shaping the shaping frame such that the front frame portion extends downwards from the torso of a carrier, from the stomach face of said carrier and that the support portion is located on a front face or on a lateral face of the thorax or of the abdomen of said carrier,   equipping the shoulder strap of the shaping frame.