Adaptive harness

Abstract

An adaptive harness includes a neck girth loop and a torso girth loop. Each loop has lateral arcs on opposite sides of and extending in directions substantially parallel to a sagittal plane. Each of the lateral arcs has an adjustable length. The loops are connected to one another ventrally and dorsally. The harness further includes a tension force transfer path that extends circumferentially along the neck girth loop from a tension force redirector, or ring, on the neck girth loop in the sagittal plane through the lateral arcs of the neck girth loop. The harness further includes a tension force conduit, or strap, secured along the path. When a tension force is applied to the strap outwardly from the ring, such as the pulling of a leash attaching to a leash coupling on the strap, the lengths of the lateral arcs of the neck girth loop are shortened, resulting in a better fit of the harness to the subject.

What is claimed is: 
     
         1 . A harness, comprising:
 a girth loop having lateral arcs on opposite sides of and extending in directions substantially parallel to a sagittal plane, each having an adjustable length;   a tension force transfer path extending circumferentially along the loop from a tension force redirector on the loop in the sagittal plane through the arcs; and   at least one tension force conduit secured along the path;   such that when a tension force is applied to the conduit outwardly from the redirector, the lengths of the arcs are shortened.   
     
     
         2 . The harness of  claim 1 , wherein:
 the redirector is located at a ventral portion of the loop or a dorsal portion of the loop.   
     
     
         3 . The harness of  claim 2 , wherein:
 the redirector is a ventral tension force redirector;   the harness includes a dorsal tension force redirector on the loop in the plane;   the path extends circumferentially along the loop, passing through the redirectors and three times through each arc; and   the conduit is secured to itself along the path to form a continuous conduit.   
     
     
         4 . The harness of  claim 3 , wherein:
 with respect to each redirector, each arc has an end proximal to the redirector and an end distal to the redirector; and   the path has a plurality of branches, each extending, with respect to each redirector, circumferentially along the loop from the redirector to a respective one of the distal ends, back to a respective one of the proximal ends corresponding to the respective distal end, and then back past the respective distal end to the other redirector.   
     
     
         5 . The harness of  claim 1 , wherein:
 the loop is a neck girth loop;   the harness further comprises a torso girth loop having lateral arcs on opposite sides of and extending in directions substantially parallel to the plane, each having an adjustable length; and   the loops are connected to one another ventrally and dorsally.   
     
     
         6 . The harness of  claim 5 , wherein:
 the redirector is located at a ventral portion of the harness or a dorsal portion of the harness.   
     
     
         7 . The harness of  claim 1 , wherein:
 each arc has an end proximal to the redirector and an end distal to the redirector; and   the path has a plurality of branches, each extending circumferentially along the loop from the redirector to a respective one of the distal ends and back to a respective one of the proximal ends corresponding to the respective distal end;   such that when the force is applied, each distal end is pulled toward the proximal end corresponding to the distal end.   
     
     
         8 . The harness of  claim 7 , wherein:
 the conduit is secured to each proximal end, passes through each distal end, and passes through the redirector.   
     
     
         9 . The harness of  claim 7 , wherein:
 the conduit passes through each proximal end, passes through each distal end, and passes through the redirector; and   the conduit is secured to itself along the path to form a continuous conduit.   
     
     
         10 . The harness of  claim 7 , wherein:
 the redirector is a ventral tension force redirector;   the harness includes a dorsal tension force redirector on the loop in the plane;   the path extends circumferentially along the loop, passing through the redirectors and three times through each arc;   the conduit is secured to itself along the path to form a continuous conduit; and   each branch extends, with respect to each redirector, circumferentially along the loop from the redirector to a respective one of the distal ends, back to a respective one of the proximal ends corresponding to the respective distal end, and then back past the respective distal end to the other redirector.   
     
     
         11 . The harness of  claim 1 , wherein:
 the conduit passes through the redirector; and   the harness further comprises a leash coupling through which the conduit passes when passing through the redirector.   
     
     
         12 . The harness of  claim 1 , wherein:
 the redirector includes a lock through which the conduit passes;   when the lock is in an unlocked configuration, the conduit can be moved through the lock relative to the lock; and   when the lock is in a locked configuration, the conduit cannot be moved through the lock relative to the lock.   
     
     
         13 . The harness of  claim 12 , wherein:
 when the lock is in the unlocked configuration, the conduit can be moved through the lock relative to the lock in only one direction.   
     
     
         14 . The harness of  claim 13 , wherein:
 the lock includes an interior channel configured to encourage movement of the conduit therethrough under kinetic force; and   the channel has at least one inwardly directed tooth configured to prevent movement of the conduit through the channel in a direction opposite the one direction.   
     
     
         15 . The harness of  claim 12 , wherein:
 when the lock is in the locked configuration, the conduit is prevented from moving through the lock relative to the lock by compression.   
     
     
         16 . The harness of  claim 15 , wherein:
 the lock has a lower part over which the conduit passes when passing through the lock;   the lock has an upper part under at least a portion of which the conduit passes when passing through the lock;   the lock is in the locked configuration when the upper part is secured adjacent to the lower part; and   the lock is in the unlocked configuration when the upper part is separated from the lower part.   
     
     
         17 . The harness of  claim 16 , wherein:
 the upper part is secured to the redirector when the lock is in the locked configuration and when the lock is in the unlocked configuration; and   the lower part is secured to the redirector when the lock is in the locked configuration, and not secured to the redirector when the lock is in the unlocked configuration.   
     
     
         18 . The harness of  claim 16 , wherein:
 the lower part is secured to the redirector when the lock is in the locked configuration and when the lock is in the unlocked configuration; and   the upper part is secured to the redirector when the lock is in the locked configuration, and not secured to the redirector when the lock is in the unlocked configuration.   
     
     
         19 . The harness of  claim 18 , wherein:
 the redirector includes a ring;   the lower part of the lock is snap fitted to an inner side of the ring; and   the upper part of the lock is snap fitted to the inner side of the ring.   
     
     
         20 . A method of using a harness having a girth loop, a tension force transfer path, and at least one tension force conduit secured along the path, the loop having lateral arcs on opposite sides of and extending in directions substantially parallel to a sagittal plane, each arc having an adjustable length, the path extending circumferentially along the loop from a tension force redirector on the loop in the sagittal plane through the arcs, the conduit secured along the path, the method comprising:
 opening a circumference of the loop by applying a tension force, to a perimeter of the loop to increase the adjustable lengths;   passing the loop over a head and neck of a subject;   applying another tension force, to the conduit outwardly from the redirector to establish an operational slack of the conduit;   shortening the lengths of the lateral arcs while maintaining the operational slack;   applying and releasing one or more additional tension forces, to the conduit outwardly from the redirector while the subject moves, to dynamically adjust the lengths of the arcs while the subject moves.