Multipurpose sleeping bag

Abstract

A multipurpose sleeping bag has a shell and liner covering a synthetic-fiber insulator. A head opening located in the center of the multipurpose sleeping bag is provided with a hook-and-loop fastener, which is used to draw the edges of the head opening around one's neck in an over garment mode of operation. A drawstring when used in the sleeping bag or quilt modes can close the head opening. A foot draft tube extends along the bottom edge to each side. A draw cord extends along the bottom outer end to compress the foot portion and the foot draft tube into a knot-like configuration for the sleeping bag mode. For operations other than the sleeping bag mode, the draw cord is left in place to form a skirt-like configuration. Two separate multipurpose sleeping bags can be joined to give the user a lower temperature sleeping range.

1 . A multipurpose sleeping bag that can be selectively configured in sleeping bag, over garment (short coat or long coat), poncho or quilt modes of operation, comprising: 
 a body including first, second, and third layers of flexible material, each of which extends substantially the length and width of the body, wherein the body includes first and second side edges each having a fastener adapted to fasten a length of each side edge to a length of the other side edge to configure the multipurpose sleeping bag in the sleeping bag mode of operation or in an over garment mode of operation, said fasteners extending from a foot portion of the body to a top portion thereof;    a hood collar formed at a head opening located substantially centrally in the body and substantially equidistant from the fasteners, the hood collar being adapted to permit a wearer's head to project through the head opening such that the body rests on the wearer's shoulders;    a first locking device adapted to selectively close the head opening to configure the multipurpose sleeping bag in the sleeping bag mode of operation, and to selectively open the head opening to configure the multipurpose sleeping bag in an over garment mode of operation;    a second locking device adapted to selectively close and open the foot portion such that the wearer is able to step into the multipurpose sleeping bag through the open foot portion, put the wearer's head through the head opening, and move an unfastened portion of the multipurpose sleeping bag over the shoulders to configure the multipurpose sleeping bag in an over garment mode of operation; and    a foot draft tube adapted to retain warmth at the foot portion when the foot portion is closed by the second locking device.    
   
   
       2 . A multipurpose sleeping bag as claimed in  claim 1 , wherein the first layer is adapted to form an external shell, the second layer is adapted to form an insulation sheet positioned between the first and third layers, and the third layer is adapted to form an internal lining, and wherein edge portions of said first and third layers are joined together to form the body.  
   
   
       3 . A multipurpose sleeping bag as claimed in  claim 1 , further comprising a hood element configured at the top portion of the body.  
   
   
       4 . A multipurpose sleeping bag as claimed in  claim 1 , wherein when the first and second side edges are fastened together by the fasteners in the sleeping bag mode of operation, the hood collar is located opposite to the fastened first and second side edges.  
   
   
       5 . A multipurpose sleeping bag as claimed in  claim 1 , wherein the first locking device is a hook-and-loop fastener.  
   
   
       6 . A multipurpose sleeping bag as claimed in  claim 1 , wherein the second locking device comprises a foot draw cord sleeve and a foot draw cord located in the foot draw cord sleeve, such that when the multipurpose sleeping bag is fastened in the sleeping bag mode of operation, the foot draw cord is wrapped around the first and third layers to thereby close off the foot portion.  
   
   
       7 . A multipurpose sleeping bag as claimed in  claim 1 , wherein the second layer comprises an unbounded, silicone-coated continuous-filament fiberfill.  
   
   
       8 . A multipurpose sleeping bag as claimed in  claim 1 , wherein the fasteners of the first and second side edges constitute a zipper, and wherein the multipurpose sleeping bag further comprises a zipper draft tube adjacent the fastener of one of the first and second side edges.