Sleeping bag attachment system

Abstract

A sleeping bag comprises first and second halves and an entrance end having an entrance aperture. At the entrance end, a first member attachment zipper half extends across the first half, and a second member attachment zipper half extends across the second half. A detachable pillow sleeve can be removably secured to the sleeping bag by securing a pillow sleeve attachment zipper half on the detachable pillow sleeve to either the first or second member attachment zipper half. The pillow sleeve also has a first hood attachment zipper half, and a detachable hood can be removably secured to the pillow sleeve by securing a second hood attachment zipper half on the hood to the first hood attachment zipper half. The hood can also be secured directly to the sleeping bag by securing the second hood attachment zipper half to either the first or second member attachment zipper half.

1 . A sleeping bag, comprising:
 first and second opposed halves defining a sleeping compartment therebetween;   an entrance aperture at an entrance end of the sleeping bag, the entrance aperture opening into the sleeping compartment;   a first member attachment zipper half extending across the first opposed half at the entrance end;   a second member attachment zipper half extending across the second opposed half at the entrance end.   
   
   
       2 . The sleeping bag of  claim 1 , wherein a draft collar extends across the entrance aperture inwardly of the entrance end and the first member attachment zipper half and the second member attachment zipper half are located adjacent the draft collar, between the draft collar and the entrance end. 
   
   
       3 . A sleeping bag system, comprising:
 a sleeping bag according to  claim 1 ; and   a detachable pillow sleeve, the detachable pillow sleeve having:
 a pillow sleeve attachment zipper half extending along one edge of the detachable pillow sleeve and mating with the first member attachment zipper half and with the second member attachment zipper half; and 
 a first hood attachment zipper half adjacent and substantially parallel to the pillow sleeve attachment zipper half. 
   
   
   
       4 . A sleeping bag system according to  claim 3 , further comprising a detachable hood, the detachable hood having a second hood attachment zipper half extending along a base edge of the detachable hood, the second hood attachment zipper half mating with the first hood attachment zipper half and with the first member attachment zipper half and with the second member attachment zipper half. 
   
   
       6 . A sleeping bag according to  claim 1 , further comprising an entrance aperture zipper comprising a first entrance aperture zipper half extending at least partially along an edge of the first opposed half and a second entrance aperture zipper half extending at least partially along an edge of the second opposed half, the first and second entrance aperture zipper halves mating with one another for selectably enlarging and constricting the entrance aperture. 
   
   
       7 . A detachable pillow sleeve, the detachable pillow sleeve having a pillow sleeve attachment zipper half extending along one edge thereof, and a hood attachment zipper half adjacent and substantially parallel to the pillow sleeve attachment zipper half. 
   
   
       8 . A detachable pillow sleeve according to  claim 7 , wherein cushioning is disposed inside the detachable pillow sleeve. 
   
   
       9 . A sleeping bag system, comprising:
 a first sleeping bag having a first length;   a second sleeping bag having a second length that is different from the first length;   each sleeping bag comprising first and second opposed sleeping bag halves defining respective sleeping compartments therebetween, each sleeping bag having an entrance aperture at an entrance end thereof, each entrance aperture opening into the respective sleeping compartment,   each sleeping bag further comprising an entrance aperture zipper comprising a first entrance aperture zipper half extending at least partially along an edge of the first opposed half and a second entrance aperture zipper half extending at least partially along an edge of the second opposed half, the first and second entrance aperture zipper halves mating with one another for selectably enlarging and constricting the respective entrance apertures;   each entrance aperture zipper being of equal length; and   each first entrance aperture zipper half mating with the second entrance aperture zipper half of the other sleeping bag.   
   
   
       10 . A sleeping bag system, comprising:
 a sleeping bag, comprising:
 first and second opposed halves defining a sleeping compartment therebetween; 
 a sleeping bag entrance aperture at an entrance end of the sleeping bag, the sleeping bag entrance aperture opening into the sleeping compartment; 
 a first member attachment zipper half extending across the first opposed half at the entrance end; 
 a second member attachment zipper half extending across the second opposed half at the entrance end; 
 a first layer attachment zipper half extending across the first opposed half at the entrance end, inwardly of the first member attachment zipper half; 
 a second layer attachment zipper half extending across the second opposed half at the entrance end, inwardly of the second member attachment zipper half; and 
 a sleeping bag entrance aperture zipper comprising a first sleeping bag entrance aperture zipper half extending at least partially along an edge of the first opposed half and a second sleeping bag entrance aperture zipper half extending at least partially along an edge of the second opposed half, the first and second sleeping bag entrance aperture zipper halves mating with one another for selectably enlarging and constricting the sleeping bag entrance aperture; 
   a detachable pillow sleeve, the detachable pillow sleeve having:
 a pillow sleeve attachment zipper half extending along one edge of the detachable pillow sleeve and mating with the first member attachment zipper half and with the second member attachment zipper half; and 
 a first hood attachment zipper half adjacent and substantially parallel to the pillow sleeve attachment zipper half; 
   a detachable hood, the detachable hood having a second hood attachment zipper half extending along a base edge of the detachable hood, the second hood attachment zipper half mating with the first hood attachment zipper half and with the first member attachment zipper half and with the second member attachment zipper half, and   a detachable layer, the detachable layer:
 defining an enclosure having a layer entrance aperture that is extended by a slit along a side of the detachable layer; 
 being sized to fit within the sleeping compartment of the sleeping bag so as to be substantially coterminous with the sleeping bag; 
 having first and second layer zipper halves extending along opposed edges of the layer entrance aperture, the first layer zipper half mating with the first layer attachment zipper half and the second layer zipper half mating with the second layer attachment zipper half; 
   wherein, when the first layer zipper half is mated with the first layer attachment zipper half and the second layer zipper half is mated with the second layer attachment zipper half, the layer entrance aperture is aligned with the sleeping bag entrance aperture and the slit extending the layer entrance aperture is aligned with the sleeping bag entrance aperture zipper.   
   
   
       11 . The sleeping bag system of  claim 10 , wherein the first and second layer zipper halves each also mate with the pillow sleeve attachment zipper half and the second hood attachment zipper half.