Patent ID: 11870221
Assignee: FEDERAL-MOGUL IGNITION GMBH
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 14:
15. The spark plug of claim 1, wherein

 
  
   
    (
    
     
      T
      IS
     
     
      D
      
       C
       ⁢
       E
      
     
    
    )
   
   ⁢
   
    (
    
     
      D
      S
     
     
      D
      M
     
    
    )
   
   ⁢
   
    
     (
     
      
       ρ
       
        T
        ⁢
        H
       
      
      
       
        ρ
        
         T
         ⁢
         H
        
       
       -
       ρ
      
     
     )
    
    
     0
     .
     5
    
   
  
  >
  2
 

and, (
    
     
      T
      G
     
     
      D
      CE
     
    
    )
   
   ⁢
   
    (
    
     
      D
      S
     
     
      D
      M
     
    
    )
   
   ⁢
   
    
     (
     
      
       ρ
       
        T
        ⁢
        H
       
      
      
       
        ρ
        
         T
         ⁢
         H
        
       
       -
       ρ
      
     
     )
    
    
     0
     .
     5
    
   
  
  >
  
   2
   .