Ex parte ANDERSON - Page 2

          Appeal No. 1997-2036                                                        
          Application No. 08/335,991                                                  

          communication with the surrounding environment.  Claim 1 is                 
          illustrative of the claimed invention, and it reads as                      
               1.   A diffusion structure for allowing fluid flow                     
          between an interior of a disk drive and a surrounding external              
          environment, comprising:                                                    
               an entry channel having a first end connected to the                   
          external environment, and a second end at an opposite end of                
          said entry channel;                                                         
               a plurality of chambers, a first chamber of said                       
          plurality of chambers connected to said second end of said                  
          entry channel, and a second chamber connected to the interior               
          of the disk drive;                                                          
               a plurality of channels interconnected between said                    
          plurality of chambers, said plurality of channels inhibiting                
          flow between said plurality of chambers at least at certain                 
          fluid flow rates;                                                           
               a housing for the disk drive in which said entry channel,              
          said plurality of chambers and plurality of channels are                    
          formed; and                                                                 
               a cover affixed to said housing over said plurality of                 
          chambers and plurality of channels so as to define a diffusion              
          path through said plurality of chambers and plurality of                    
               The prior art references of record relied upon by the                  
          examiner in rejecting the appealed claims are:2                             

               Gitzendanner, PN 4,620,248, Morehouse et al., PN 5,025,336, Stefansky2                                                                     
          et al., PN 5,029,026, and Inoue, JP 62-279588 are all cited in the prior art
          section of the Examiner's Answer but were not applied in any rejections.    

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