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Iron golf club head with improved performance

  • US 8,475,293 B2
  • Filed: 09/13/2010
  • Issued: 07/02/2013
  • Est. Priority Date: 09/13/2010
  • Status: Active Grant
First Claim
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1. An iron type golf club head comprising:

  • a frontal face portion, made out of a first material having a first density, connected to a forward portion of said iron type golf club head;

    a body portion, made out of a second material having a second density, connected to a rear portion of said frontal face portion providing a structural support for said frontal face portion;

    wherein said first material is different from said second material;

    wherein said first density is lower than said second density; and

    wherein said iron type golf club head has a face replacement ratio of greater than about 0.9 and less than about 1.0;

    said face replacement ratio is calculated by dividing a cross-sectional height of said frontal face portion by a total cross-sectional height of a striking surface of said iron type golf club head,wherein said iron type golf club head has a velocity factor of less than about 32,500 mm/s;

    said velocity factor is determined by multiplying a CG height from ground with a primary resonant frequency all divided by a COR of said iron type golf club head.

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