Patent ID: 11859705
Assignee: CALIFORNIA INSTITUTE OF TECHNOLOGY
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A cup-type flexspline for a metal strain wave gear comprising,
a base, and a vertical wall, wherein the vertical wall transitions through a curvature to the base, wherein an input shaft is disposed at the base;
wherein the vertical wall is circular with an outer wall diameter, wherein the flexspline maintains circularity along the rotational axis of the vertical wall;
wherein the maximum radius of curvature at the base of the cup is at least 10% of the diameter of the flexspline in accordance with the equation:, Maximum
      ⁢
         
      radius
     
    
   
   
    
     
      of
      ⁢
         
      curvature
     
    
   
  
  =
  
   
    
     
      
       
        
         (
         
          Diameter
          ⁢
             
          of
          ⁢
             
          outer
          ⁢
             
          wall
          ⁢
             
          of
          ⁢
             
          flexspline
         
         )
        
        -
       
      
     
     
      
       
        (
        
         Diameter
         ⁢
            
         of
         ⁢
            
         input
         ⁢
            
         shaft
        
        )
       
      
     
    
    2
   
   .