Ex parte BERENDS et al. - Page 3

          Appeal No. 1999-0195                                                        
          Application 08/507,424                                                      

          would have been obvious to one of ordinary skill in the art to              
          have provided control and drive means in the device of Blunden              
          for moving the chock bar 62 relative to the carriage 80 and                 
          for moving the carriage 80 relative to the track 46 in view of              
          the teachings of Cone “so as to automate the system of                      
          Blunden” (answer, page 3).                                                  

               While we appreciate that it might be possible, as a                    
          general proposition, to automate the system of Blunden, it                  
          would not have been obvious within the meaning of 35 U.S.C.                
          103 to do so in light of the combined teachings of the applied              
          references.  In keeping with its intended use on a railroad                 
          car environment, the Blunden system is relatively simple in                 
          construction to thereby facilitate manual operation.  In use,               
          chock bar 62 is manually pivoted from the solid line position               
          in Figure 5 to the position shown in Figure 4 as carriage 80                
          is simultaneously moved along 46 track in order to bring pin                
          100 into registry with one of the holes 104 in the opposite                 
          track to secure the chock bar in a vehicle blocking position.               
          The complexity and accuracy that would be required of a                     


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