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Matched set of golf clubs and method of producing the same

  • US 5,879,241 A
  • Filed: 03/04/1997
  • Issued: 03/09/1999
  • Est. Priority Date: 03/04/1997
  • Status: Expired due to Term
First Claim
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1. A correlated set of golf clubs for use by a golfer, said correlated set of golf clubs comprising:

  • at least two golf clubs of an equivalent set;

    each club includes a shaft having a first end and a butt end;

    a head being located at said first end and a grip being located at said butt end;

    said head having a head weight;

    said plurality of shafts lengths decreases as said head weights increases;

    each club has a measured frequency when said head is attached thereto and said measured frequency is established by tip cutting said first end of said shaft, until re-measured frequency equal the established required frequency for the club set being built;

    said measured frequency of said plurality of clubs being within plus or minus 1 cycle per minute of said established frequency;

    said set of golf clubs includes a base club, said base club is a completed club and includes a first length, said first length is the shortest length in said set of golf clubs, a force (F) is calculated for said base club using the following equation;

    ##EQU5## wherein;

    C is a measured distance from the center of gravity of said base club to said butt end of said club;

    W is a total weight of said head and said shaft of said base club;

    L1 is said first length plus d2 for d2 being a point above said butt end of said grip of said base club used as the axis of rotation;

    a center of gravity is calculated for each additional club of said set using the following equation;

    ##EQU6## Cn is a calculated measurement establishing a location of said center of gravity of club n measured from said butt end of said grip of club n;

    Wn is a total weight of said head and said shaft of said club n; and

    Ln is a length of said club n plus d2 for d2 being a point above said butt end of said grip of said club n used as the axis of rotation.

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