Patent ID: 11896880
Assignee: KARSTEN MANUFACTURING CORPORATION
Field: Furniture, games (Other fields)
Classification: CPC A | IPC A

Claim 9:
10. The putter shaft of claim 8, wherein:
the putter shaft comprises a torsional stiffness ratio between 0.004 and 0.010; and
the torsional ratio is calculated by the following equation:, R
    T
  
  =
  
    
      
        Tortional
        ⁢
        
          
            
          
          ⁢
          
            
          
        
        ⁢
        Stiffness
      
      
        
          10
          ⁢
          
            ,
          
          ⁢
          0
          ⁢
          0
          ⁢
          0
          ×
          
            (
            
              Tip
              ⁢
              
                
              
              ⁢
              OD
            
            )
          
        
        +
        
          Shaft
          ⁢
          
            
          
          ⁢
          Mass
        
      
    
    .