Ex parte UNGER et al. - Page 3




          Appeal No. 1998-1805                                                        
          Application No. 08/596,734                                                  


               The appellants’ invention is directed to a device for                  
          impregnation of webs of porous materials.  The invention is                 
          illustrated by reference to claim 1, which reads as follows:                

               1.   A device for impregnation of webs of porous                       
               materials with a liquid impregnating medium under                      
               increased pressure, comprising a roller rotatable                      
               about a horizontal axis; a trough arranged so that                     
               said roller is partially inserted in said trough to                    
               form a chamber between an inner surface of said                        
               trough and an outer surface of said roller; means                      
               for supplying an impregnating medium into said chamber;                
               and means forming an inlet slot for introducing a                      
               web to be impregnated into said chamber and an outlet                  
               slot for withdrawing the impregnated medium from                       
               said chamber, said chamber having a cross-section                      
               which over a path from said inlet slot to said                         
               outlet slot narrows and again increases many times;                    
               and sealing means for sealing said inlet slot and                      
               said outlet slot.                                                      

                                   THE REFERENCES                                     
               The references relied upon by the examiner to support the              
          final rejection are:                                                        
          Fornelli                 2,779,183                     Jan. 29,             
          1957                                                                        
          Long                          4,702,943                     Oct.            
          27, 1987                                                                    


                                    THE REJECTION                                     
               Claims 1, 3, and 4 stand rejected under 35 U.S.C.  103                
                                          3                                           





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