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Golf club head

  • US 6,193,614 B1
  • Filed: 09/09/1998
  • Issued: 02/27/2001
  • Est. Priority Date: 09/09/1997
  • Status: Expired due to Fees
First Claim
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1. A golf club head defined by a face portion, an upper face portion, a toe-side portion, a heel-side portion, a sole portion, and a back-face portion, wherein at least one of said portions is partitioned by thick portions or rib portions into a plurality of segments each having a long-dimension direction and a short-dimension direction, and at least one of said segments satisfies at least one of the following conditions:

  • 1) a longitudinal direction of crystal grains of a material of said segment is oriented in said short-dimension direction;

    2) a direction in which said material exhibits a large ductile amount at the time of breaking is oriented in said short-dimension direction; and

    3) a direction in which said material exhibits a large ratio of ductility per unit length is oriented in said short-dimension direction.

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