Ex parte RAO et al. - Page 24




          Appeal No. 96-3202                                                          
          Application No. 08/183,464                                                  


                                      APPENDIX                                        

               1.   A low friction valve train actuating at least one                 
          valve in an internal combustion engine comprising:                          
               a cam shaft having at least one cam; and                               
               a tappet contacting said at least one cam and valve, said              
          at least one cam and tappet having outer surfaces with an open              
          porosity; and                                                               
               a solid film lubricant impregnated and anchored in said                
          open porosity, said solid film lubricant being stable to                    
          temperatures at about 700°F to retain a low coefficient of                  
          friction and promote rapid formation of a stable oil film to                
          reduce  friction therebetween in an oil starved environment.                

               14. A low friction valve train actuating at least one                  
          valve in an internal combustion engine comprising:                          
               a cam shaft having at least one cam with a base portion                
          and lobe portion, said base and lobe portions having outer                  
          surfaces treated such that the treated surfaces have an open                
          porosity;                                                                   
               a tappet having an outer surface treated such that the                 
          treated surface has an open porosity, said tappet further                   
          including a wear resistant insert secured to said tappet and                
          contacting said at least one cam; and                                       
               a solid film lubricant impregnated and anchored in said                
          open porosity of said treated surfaces of said base portion                 
          and said lobe portion and said tappet, said solid film                      

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