Ex Parte POWELL - Page 3




                              forming thereby an opening through the disk body that is                                                     
                              radially outwardly of the juncture;                                                                          
                              said segment having an inclined leading edge with cutting                                                    
                              teeth on the edge for cutting in the direction of rotation and                                               
                              as a result of the angular orientation of the blades, said teeth                                             
                              presenting a laterally extended cutting section from a face                                                  
                              view and laterally extended cutting section from an edge                                                     
                              view of the disk.                                                                                            
              Claim 57 of the '936 application reads as follows, with differences from the '700 patent                                     
              claim 1 bracketed for deletions and underlined for additions:                                                                
                              A brush cutting blade for mounting to a drive shaft manipulated by a                                         
                              handle, said brush cutting blade comprising:                                                                 
                              a circular disk having a disk body defining a plane and                                                      
                              having top and bottom sides and a peripheral edge, teeth                                                     
                              formed on the peripheral edge and defining a direction of                                                    
                              rotation of the disk for cutting, and a center mount for                                                     
                              mounting the disk to the drive shaft with the top side facing                                                
                              the handle for rotatively driving the disk in the defined                                                    
                              direction of rotation;                                                                                       
                              at least one cutting segment formed out of the disk body                                                     
                              positioned radially outward of the center mount and radially                                                 
                              inward of the peripheral edge, said segment having a                                                         
                              generally curved triangular shape with three sides, one side                                                 
                              being unsevered and forming a juncture with the disk body                                                    
                              and the other sides extending from said one side radially                                                    
                              outward[ly] of the center mount severed from the disk body,                                                  
                              said segment deflected outwardly of the plane of the disk                                                    
                              body toward the bottom side of the disk body at an angled                                                    
                              orientation relative to the disk body between positions of co                                                
                              planar and normal relative to the plane of the disk body and                                                 
                              forming thereby an opening through the disk body that is                                                     
                              radially outwardly of the juncture;                                                                          
                              said segment having an inclined leading edge with cutting                                                    
                              teeth on the edge for cutting in the direction of the rotation                                               
                              and as a result of the angular orientation of the blades, said                                               
                              teeth presenting a laterally extended cutting section from a                                                 
                                                                  -3-                                                                      






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Last modified: November 3, 2007