Frameless viewport

Abstract

A viewport including substantially aligned openings disposed in inner and outer panels for a door or wall is provided. A pane assembly configured to permit viewing therethrough is provided, the pane assembly being secured into position between the inner and outer panels in alignment with the openings. An injected insulating material is disposed between the inner and outer panels and around the pane assembly to substantially fill an open space between the inner and outer panels, the insulating material being configured and disposed to maintain the secured position of the pane assembly.

1 . A viewport for a door or wall comprising: 
 substantially aligned openings disposed in inner and outer panels of a door or wall;    a pane assembly configured to permit viewing therethrough, the pane assembly being secured into position between the inner and outer panels in alignment with the openings; and    an injected insulating material disposed between the inner and outer panels and around the pane assembly to substantially fill an open space between the inner and outer panels, the insulating material being configured and disposed to maintain the secured position of the pane assembly.    
   
   
       2 . The viewport of  claim 1  further including a tape having opposed adhesive surfaces to secure the pane assembly to at least one of the inner and outer panels.  
   
   
       3 . The viewport of  claim 2  wherein the pane assembly includes at least one pane.  
   
   
       4 . The viewport of  claim 3  wherein the pane assembly further includes at least one spacer disposed adjacent the at least one pane.  
   
   
       5 . The viewport of  claim 3  further includes at least one gasket separating each adjacent pane of the at least one pane.  
   
   
       6 . The viewport of  claim 5  wherein each of the at least one gasket incorporates a desiccant.  
   
   
       7 . The viewport of  claim 1  wherein the injected insulating material is a polyurethane foam.  
   
   
       8 . A viewport for an air handling unit comprising: 
 substantially aligned openings disposed in inner and outer panels of a door or wall of an air handling unit;    a pane assembly configured to permit viewing therethrough, the pane assembly being secured into position between the inner and outer panels in alignment with the openings; and    an injected insulating material disposed between the inner and outer panels and around the pane assembly to substantially fill an open space between the inner and outer panels, the insulating material being configured and disposed to maintain the secured position of the pane assembly.    
   
   
       9 . The viewport of  claim 8  further including a tape having opposed adhesive surfaces to secure the pane assembly to at least one of the inner and outer panels.  
   
   
       10 . The viewport of  claim 9  wherein the pane assembly includes at least one pane.  
   
   
       11 . The viewport of  claim 10  wherein the pane assembly further includes at least one spacer disposed adjacent the at least one pane.  
   
   
       12 . The viewport of  claim 10  further includes at least one gasket separating each adjacent pane of the at least one pane.  
   
   
       13 . The viewport of  claim 12  wherein each of the at least one gasket incorporates a desiccant.  
   
   
       14 . The viewport of  claim 8  wherein the injected insulating material is a polyurethane foam.  
   
   
       15 . A method for installing a viewport, comprising the steps of: 
 providing inner and outer panels of a door or wall;    securing a pane assembly into position between the inner and outer panels in alignment with the openings, the pane assembly configured to permit viewing therethrough;    disposing injected insulating material between the inner and outer panels to substantially fill an open space between the inner and outer panels, the insulating material being configured and disposed to maintain the secured position of the pane assembly.    
   
   
       16 . The method of  claim 15  wherein the step of securing a pane assembly into position is achieved using a tape having opposed adhesive surfaces.  
   
   
       17 . The method of  claim 15  wherein the injected insulating material is polyurethane foam.  
   
   
       18 . The method of  claim 15  wherein the pane assembly includes at least one pane and at least one gasket, the at least one gasket separating each adjacent pane of the at least one pane.  
   
   
       19 . The method of  claim 18  wherein the pane assembly includes at least one spacer disposed adjacent the at least one pane.  
   
   
       20 . The method of  claim 18  wherein the at least one gasket incorporates a desiccant.