Insulated rear head for transport tank and/or storage tank

Abstract

An insulated rear head for a tank comprising an outer head and an inner head. The inner head is spaced away from the outer head, creating an insulation cavity. The insulation cavity is filled with an insulating material to prevent heat gain or loss from the product contained within the tank.

What is claimed is: 
     
         1 . A rear head for a tank, comprising:
 an outer head having a cross-sectional profile;   an inner head having a cross-sectional profile and in operative connection with the outer head, and spaced apart from the outer head; and   an insulating cavity defined by the spacing of the outer head from the inner head and the cross-sectional profiles of the outer head and the inner head, the insulating cavity further filled with insulating material.   
     
     
         2 . The rear head of  claim 1 , wherein the cross-sectional profile of the inner head and the cross-sectional profile of the outer head are substantially similar. 
     
     
         3 . The rear head of  claim 2 , further comprising the insulating cavity having a cross-sectional profile with a width that is substantially uniform. 
     
     
         4 . The rear head of  claim 1 , wherein the cross-sectional profile of the inner head and the cross-sectional profile of the outer head are not substantially similar. 
     
     
         5 . The rear head of  claim 4 , further comprising the insulating cavity having a cross-sectional profile with a width that is not substantially uniform. 
     
     
         6 . A tank comprising:
 a main body;   a front head sealingly attached to the main body;   a rear head in openably sealing communication with the main body and further comprising:
 an outer head having a cross-sectional profile; 
   an inner head having a cross-sectional profile and in operative connection with the outer head, and spaced apart from the outer head; and   an insulating cavity defined by the spacing of the outer head from the inner head and the cross-sectional profiles of the outer head and the inner head, the insulating cavity further filled with insulating material.   
     
     
         7 . The rear head of  claim 6 , wherein the cross-sectional profile of the inner head and the cross-sectional profile of the outer head are substantially similar. 
     
     
         8 . The rear head of  claim 7 , further comprising the insulating cavity having a cross-sectional sectional profile with a width that is substantially uniform. 
     
     
         9 . The rear head of  claim 6 , wherein the cross-sectional profile of the inner head and the cross-sectional profile of the outer head are not substantially similar. 
     
     
         10 . The rear head of  claim 9 , further comprising the insulating cavity having a cross-sectional profile with a width that is not substantially uniform.