Patent ID: 11904210
Assignee: ACUSHNET COMPANY
Field: Furniture, games (Other fields)
Classification: CPC A | IPC A

Claim 19:
20. A golf ball having a generally spherical surface and comprising:
a plurality of dimples separated by a land area formed on the ball surface, wherein the plurality of dimples comprises a plurality of non-spherical dimples each having a non-axially symmetric plan shape, a varying edge angle, a defined point of maximum dimple depth, and an effective dimple diameter which is twice an average radial dimension of a set of points defining the plan shape from the plan shape centroid, wherein:
each dimple cross-section of the non-spherical dimples consists of two arcs, each arc extending from the defined point of maximum dimple depth to a point at the land area of the golf ball; and
the plurality of non-spherical dimples comprise at least one dimple in which every point on the perimeter of the dimple is located at a radial angle, θ, about a unit circle, where 0≤θ≤2π, and the edge angle value of the dimple at any given point on the perimeter is defined by the solution of an edge angle function f(θ), wherein f(θ) is one of the following:, 1.
      
   
    f
    ⁡
    (
    θ
    )
   
  
  =
  
   
    1
    ⁢
    4
   
   +
   
    
     4
     π
    
    ·
    
     sin
     ⁡
     (
     θ
     )
    
   
   +
   
    
     sin
     ⁡
     (
     
      3
      ⁢
      θ
     
     )
    
    3
   
   +
   
    
     sin
     ⁡
     (
     
      5
      ⁢
      θ
     
     )
    
    5
   
   +
   
    
     sin
     ⁡
     (
     
      7
      ⁢
      θ
     
     )
    
    7
   
  
 

 
  
   2.
      
   
    f
    ⁡
    (
    θ
    )
   
  
  =
  
   
    1
    ⁢
    4
   
   +
   
    5
    ⁢
    
     
      
       cos
       ⁡
       (
       
        θ
        2
       
       )
      
      3
     
     ·
     
      sin
      ⁡
      (
      
       
        3
        2
       
       ⁢
       θ
      
      )
     
    
   
   +
   
    
     sin
     ⁡
     (
     
      
       7
       2
      
      ⁢
      θ
     
     )
    
    7
   
  
 

 
  
   3.
      
   
    f
    ⁡
    (
    θ
    )
   
  
  =
  
   
    1
    ⁢
    4
   
   +
   
    sin
    ⁡
    (
    
     
      -
      4
     
     ⁢
     
      .139
      ·
      θ
     
    
    )
   
   +
   
    
     sin
     ⁡
     (
     
      
       -
       1
      
      ⁢
      
       .026
       ·
       θ
      
     
     )
    
    
     
      0
      .
      3
     
     ⁢
     8
     ⁢
     7
    
   
   +
   
    
     
      sin
      ⁡
      (
      
       5
       ⁢
       
        .166
        ·
        θ
       
      
      )
     
     
      
       0
       .
       7
      
      ⁢
      2
      ⁢
      3
     
    
    .