Ex parte ISHIUCHI et al. - Page 2




               Appeal No. 1999-1818                                                                       Page 2                 
               Application No. 08/586,806                                                                                        


                                                       BACKGROUND                                                                
                      The appellants' invention relates to a push rod (claims 1-5) comprising an aluminum                        
               alloy rod body and a steel ball bonded by resistance welding to one end of the rod body and a                     
               process for producing the push rod (claims 7, 8 and 10).  The resistance welding process yields                   
               "biting-in" portions in the rod body into the steel ball and an aluminum layer formed on the                      
               surface of the steel ball.  Further understanding of the invention can be derived from a reading                  
               of exemplary claims 1 and 7, which are reproduced in the opinion section of this decision.                        
                      The prior art references of record relied upon by the examiner in rejecting the appealed                   
               claims are:                                                                                                       
               Macura                                       2,975,775                      Mar. 21, 1961                         
               Enda et al. (Enda)                           61-279711                      Dec. 10, 1986                         
                      (Japanese patent publication)                                                                              
               Sugiyama et al. (Sugiyama)                   57-29069                       Jun. 25, 19821                        
                      (Japanese patent publication)                                                                              
                      The following rejections are before us for review.                                                         
                      Claims 1-4, 7, 8 and 10 stand rejected under 35 U.S.C.  103 as being unpatentable                         
               over Macura in view of Enda.                                                                                      
                      Claims 1, 2 and 5 stand rejected under 35 U.S.C.  103 as being unpatentable over                          
               Macura in view of Sugiyama.                                                                                       

                      1English language translations of the Enda and Sugiyama references, prepared by the Patent and Trademark   
               Office, are appended hereto.                                                                                      







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