Force multiplying motorcycle retaining strap

Abstract

A generally U-sectioned cam buckle frame is modified to include a first turning roller aligned transversely across the frame proximate the free end of a release lever. A generally planar tongue having one end pivoted adjacent the first roller extends within the frame under the cam piece connected to the release lever provides a force transfer structure for a strap is inserted between the tongue and the frame bottom surface, around the first roller to pass between the cam piece and the other side of the tongue. Other transverse rollers may be included in the frame to form a pulley arrangement and one end of a frame side wall may be convolved to form a hook assembly.

1 . In a cam buckle assembly characterized by a frame including an elongate bottom surface, a pair of side surfaces along the edges of said bottom surface, a lever assembly defined by a release lever cantilevered at an angle from a cam piece and pivotally mounted in said frame at the common juncture therebetween, the free end of said cam piece extending towards said bottom surface over a portion of the pivotal movement thereof, and a flexible strap aligned for capture between said cam piece and said bottom surface, the improvement comprising:
 a first turning roller mounted for rotation in said frame proximate the free end of said release lever;   a generally planar tongue pivotally deployed in said frame extending the free end thereof between the free end of said cam piece and said bottom surface, a portion of said strap being received between said bottom surface and said tongue and wound about said first turning roller for insertion of a segment thereof between the free end of said release lever and said tongue for urging said release lever about the pivotal mount thereof.   
     
     
         2 . Apparatus according to  claim 1 , further comprising:
 a second turning roller mounted for rotation in said frame proximate said cam piece.   
     
     
         3 . Apparatus according to  claim 2 , wherein:
 one end of a side of said frame proximate said first turning roller forms a hook.   
     
     
         4 . Apparatus according to  claim 3 , further comprising.
 closing means secured to said hook for selectively closing the opening in said hook.   
     
     
         5 . Apparatus according to  claim 1 , wherein:
 one end of a side of said frame proximate said first turning roller forms a hook.   
     
     
         6 . Apparatus according to  claim 5 , further comprising.
 closing means secured to said hook for selectively closing the opening in said hook.   
     
     
         7 . In a cam buckle assembly characterized by a frame including a bottom surface, a lever assembly defined by a release lever cantilevered at an angle from a cam piece and pivotally mounted in said frame at the common juncture therebetween, the free end of said cam piece extending towards said bottom surface over a portion of the pivotal movement thereof, spring means for urging said cam piece against said bottom surface, and a flexible strap aligned for capture therebetween, the improvement comprising:
 a first turning roller mounted for rotation in said frame proximate the free end of said release lever;   a generally planar tongue pivotally deployed in said frame to extend the free end thereof between the free end of said cam piece and said bottom surface, a portion of said strap being received between said bottom surface and said tongue and wound about said first turning roller for insertion between the free end of said cam piece and said tongue; and   a cam interlock mounted for rotation in said frame in an alignment subjacent said release lever including a radially extending enlargement for urging said lever assembly to compress said cam piece against said strap portion on said tongue.   
     
     
         8 . Apparatus according to  claim 7 , further comprising:
 a second turning roller mounted for rotation in said frame proximate said cam piece.   
     
     
         9 . Apparatus according to  claim 8 , wherein:
 one end of a side of said frame proximate said first turning roller includes a hook.   
     
     
         10 . Apparatus according to  claim 9 , further comprising.
 closing means secured to said hook for selectively closing the opening in said hook.   
     
     
         11 . Apparatus according to  claim 7 , further comprising:
 one end of a side of said frame proximate said first turning roller is convolved to form a hook.   
     
     
         12 . Apparatus according to  claim 11 , further comprising.
 closing means secured to said hook for selectively closing the opening in said hook.   
     
     
         13 . In a cam buckle assembly characterized by a frame including a bottom surface, a lever assembly defined by a release lever cantilevered at an angle from a cam piece and pivotally mounted in said frame at the common juncture therebetween, the free end of said cam piece extending towards said bottom surface over a portion of the pivotal movement thereof, and a flexible strap aligned for capture between said cam piece and said bottom surface, the improvement comprising:
 a first turning roller mounted for rotation in said frame proximate the free end of said release lever;   a generally planar tongue pivotally deployed in said frame to extending the free end thereof between the free end of said cam piece and said bottom surface, a portion of said strap being received between said bottom surface and said tongue and wound about said first turning roller for insertion between the free end of said cam piece and said tongue;   
     
     
         14 . Apparatus according to  claim 13 , further comprising:
 a second turning roller mounted for rotation in said frame proximate said cam piece.   
     
     
         15 . Apparatus according to  claim 14 , wherein:
 one end of a side of said frame proximate said first turning roller forms a hook.   
     
     
         16 . Apparatus according to  claim 15 , further comprising.
 closing means secured to said frame for selectively closing the opening in said hook.   
     
     
         17 . Apparatus according to  claim 13 , further comprising:
 one end of a side of said frame proximate said first turning roller is convolved to form a hook.   
     
     
         18 . Apparatus according to  claim 17 , further comprising. closing means secured to said frame for selectively closing the opening in said hook.