US2006108361A1PendingUtilityA1

Insulated cargo container doors

52
Individually held — no corporate assignee on recordPriority: Oct 8, 2004Filed: Oct 11, 2005Published: May 25, 2006
Est. expiryOct 8, 2024(expired)· nominal 20-yr term from priority
Inventors:Joseph Seiter
B65D 90/06B65D 90/008
52
PatentIndex Score
0
Cited by
0
References
0
Claims

Abstract

The prevention discloses an insulated door for a cargo container, and in particular, a boxcar. In one implementation, the door is a double plug door, wherein each door has an insulating layer and a skin on the insulating door. Each door also has a projection designed to overlap with a projection on the other door. A sealing member is also included on one of the doors. When the double plug door of the invention is closed, the only contact between the doors in the area of the projections is between the skin of one door and the skin or sealing member of the second door. This improves the thermal efficiency of the doors.

Claims

exact text as granted — not AI-modified
1 . A cargo container comprising: 
 an enclosure for transporting cargo, the enclosure comprising an opening to provide access to the enclosure;    a first plug door comprising: 
 a first insulating layer;  
 a first skin on a face of the first insulating layer; and  
 a first projection; and  
   a second plug door comprising: 
 a second insulating layer;  
 a second skin on a face of the second insulating layer;  
 a second projection designed to overlap with the first projection; and  
 a sealing member disposed on the second projection;  
   wherein when the first plug door and the second plug door are in a closed configuration, the only contact between the first plug door and the second plug door in the area of the first and second projections is between the first skin and the second skin or the sealing member.    
     
     
         2 . The cargo container of  claim 1 , wherein the first and second skins comprise fiber-reinforced plastics.  
     
     
         3 . The cargo container of  claim 1 , wherein the first and second insulating layers comprise urethane foam.  
     
     
         4 . The cargo container of  claim 1 , wherein the the first and second insulating layers comprise a vacuum insulated panel.  
     
     
         5 . A cargo container comprising: 
 an enclosure for transporting cargo, the enclosure comprising an opening to provide access to the enclosure;    a first plug door comprising: 
 a first insulating layer;  
 a first outer skin on an outer surface of the first insulating layer; and  
 a first inner skin on an inner surface of the first insulating layer, wherein the inner skin includes a projection; and  
   a second plug door comprising: 
 a second insulating layer;  
 a second outer skin on an outer surface of the second insulating layer; and  
 a second inner skin on an inner surface of the second insulating layer;  
 wherein the second insulating layer, second outer skin, and second inner skin include a second projection designed to overlap with the first projection; and  
 a sealing member disposed on the second projection;  
   wherein when the first plug door and the second plug door are in a closed configuration, the only contact between the first plug door and the second plug door in the area of the first and second projections is between the first inner skin and the second inner skin of the second plug door or the sealing member.    
     
     
         6 . The cargo container of  claim 5 , wherein the first and second inner skins comprise fiber-reinforced plastics.  
     
     
         7 . The cargo container of  claim 5 , wherein the first and second insulating layers comprise urethane foam.  
     
     
         8 . The cargo container of  claim 5 , wherein the the first and second insulating layers comprise a vacuum insulated panel.  
     
     
         9 . A cargo container comprising: 
 an enclosure for transporting cargo, the enclosure comprising an opening to provide access to the enclosure, the opening having a doorjamb on its perimiter, wherein the doorjamb includes: 
 a first insulating layer;  
 a first skin on a face of the first insulating layer; and  
 a first projection; and  
   a plug door comprising: 
 a second insulating layer;  
 a second skin on a face of the second insulating layer;  
 a second projection designed to overlap with the first projection; and  
 a sealing member disposed on the second projection;  
   wherein when the plug door is in a closed configuration, the only contact between the plug door and the door jamb in the area of the first and second projections is between the first skin and the second skin or the sealing member.    
     
     
         10 . The cargo container of  claim 9 , wherein the first and second skins comprise fiber-reinforced plastics.  
     
     
         11 . The cargo container of  claim 9 , wherein the first and second insulating layers comprise urethane foam.  
     
     
         12 . The cargo container of  claim 9 , wherein the the first and second insulating layers comprise a vacuum insulated panel.  
     
     
         13 . A cargo container comprising: 
 an enclosure for transporting cargo, the enclosure comprising an opening to provide access to the enclosure, the opening having a doorjamb on its perimiter, wherein the doorjamb includes: 
 a first insulating layer;  
 a first outer skin on an outer surface of the first insulating layer; and  
 a first inner skin on an inner surface of the first insulating layer, wherein the inner skin includes a projection; and  
   a plug door comprising: 
 a second insulating layer;  
 a second outer skin on an outer surface of the second insulating layer; and  
 a second inner skin on an inner surface of the second insulating layer;  
 wherein the second insulating layer, second outer skin, and second inner skin include a second projection designed to overlap with the first projection; and  
 a sealing member disposed on the second projection;  
   wherein when the plug door is in the closed configuration, the only contact between the plug door and the door jamb in the area of the first and second projections is between the first inner skin and the second inner skin of the second plug door or the sealing member.    
     
     
         14 . The cargo container of  claim 13 , wherein the first and second inner skins comprise fiber-reinforced plastics.  
     
     
         15 . The cargo container of  claim 13 , wherein the first and second insulating layers comprise urethane foam.  
     
     
         16 . The cargo container of  claim 13 , wherein the the first and second insulating layers comprise a vacuum insulated panel.  
     
     
         17 . A double plug door for a cargo container comprising: 
 a first plug door comprising: 
 a first insulating layer;  
 a first skin on a face of the first insulating layer; and  
 a first projection; and  
   a second plug door comprising: 
 a second insulating layer;  
 a second skin on a face of the second insulating layer;  
 a second projection designed to overlap with the first projection; and  
 a sealing member disposed on the second projection;  
   wherein when the first and second projections overlap, the only contact between the first plug door and the second plug door in the area of the first and second projections is between the first skin and the second skin or the sealing member.    
     
     
         18 . The cargo container of  claim 17 , wherein the first and second skins comprise fiber-reinforced plastics.  
     
     
         19 . The cargo container of  claim 17 , wherein the first and second insulating layers comprise urethane foam.  
     
     
         20 . The cargo container of  claim 17 , wherein the the first and second insulating layers comprise a vacuum insulated panel.

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