System of golf club performance enhancement and articles resultant therefrom

  • US 8,142,308 B2
  • Filed: 12/15/2010
  • Issued: 03/27/2012
  • Est. Priority Date: 05/19/2000
  • Status: Expired due to Fees
First Claim
Patent Images

1. In a virtual 3×



  • 3 X, Y, Z orthonormal coordinate system comprising 27 volumetric coordinates in which a face plate of a golf club head intersects a forward-most XZ plane of said system, in which a heel and hosel side of said golf club head intersects a YZ plane thereof substantially at an origin of said coordinate system, and further in which an increase in X-axis value from X1 to X3 corresponds to a direction of a toe of said golf club head, with each of X1, X2 and X3 representing one third of said golf club head in the X-axis;

    an increase Y-axis value from Y1 to Y3 corresponds in direction to a rear of said golf club head, with each of Y1, Y2 and Y3 representing one third of said golf club head in the Y-axis; and

    an increase in Z-axis value from Z1 to Z3 corresponds to an increase in height above a bottom-most XY plane, with each of Z1, Z2 and Z3 representing one third of said golf club head in the Z-axis;

    a golf club adjustment system comprising;

    (a) said club head having a void space behind said face plate of said golf club and above said sole portion thereof, said void space substantially conformal in geometry to that of said club head; and

    (b) two selectable golfer replaceable weighting elements secured within said void space, wherein at least one weighting element thereof is not contiguous to any part of said face plate, and a selected coordinate value upon the Y-axis in any one of said weighting elements does not equal a selected coordinate value of Y of at least a second one of said weighting elements, and wherein at least one selected weighting element is recessed within said void space and disposed at a position having a coordinate of X2 and a coordinate of Z2.

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