Golf club head or other ball striking device with thermoreactive face
AssigneeNIKE, Inc.
InventorsRobert Boyd, Rachel M. Thurston, Jeffrey A. Hadden, Ivan E. Tornes
Life of this patent
Estimating the term…
Abstract
A ball striking device, such as a golf club, includes a head that includes a face having a ball striking surface configured for striking a ball and a body connected to the face and extending rearward from the face. The face has an area of highest response located proximate a center of the ball striking surface. The face is formed of a first material and a second material that forms at least a portion of the area of highest response. The second material has a thermal modulus response that is different from a thermal modulus response of the first material.
Claims19
A golf club head comprising:
- a face having a ball striking surface and an inner surface opposite the ball striking surface, the face having an area of highest response located proximate a center of the ball striking surface, wherein the face is formed of a first material and further comprises an insert forming at least a portion of the area of highest response, the insert being formed of a second material having a thermal modulus response that is different from a thermal modulus response of the first material, wherein the thermal modulus response of the second material is configured such that heat generated by an impact of a golf ball striking surface of at least 90 ft/s is sufficient to reduce a modulus of the second material by at least 10% relative to the modulus of the second material at ambient conditions;
- and
- a body connected to the face and extending rearward from the face.
A wood-type golf club head comprising:
- a face having a ball striking surface and an inner surface opposite the ball striking surface, the face having an area of highest response located proximate a center of the ball striking surface, wherein at least a portion of the area of highest response is formed of a material with a thermally-variable modulus such that the material has a first modulus due to heat generated by an impact of a golf ball on the ball striking surface at about 90 to 130 ft/s and a second modulus due to heat generated by an impact of the golf ball on the ball striking surface at about 160 ft/s, the second modulus being no more than 5% different from the first modulus, and wherein the material has a third modulus at ambient conditions, the third modulus being at least 20% greater than the first modulus;
- and
- a wood-type body connected to the face and extending rearward from the face, the body and the face defining an internal cavity behind the face.
A golf club head comprising:
- a face having a ball striking surface and an inner surface opposite the ball striking surface, the face having an area of highest response located proximate a center of the ball striking surface, wherein at least a portion of the area of highest response is formed of a material, the material being formed in a first molecular phase at ambient conditions, wherein heat generated by an impact of a golf ball on the ball striking surface at about 90 ft/s or more is sufficient to cause a portion of the material local to an impact site to undergo a heat-induced phase change to a second molecular phase, the second molecular phase having a different modulus than the first molecular phase, and wherein that heat generated by the impact of the golf ball on the ball striking surface at about 90 ft/s or more is sufficient to reduce a modulus of the material by at least 10% relative to the modulus of the material at ambient conditions;
- and
- a body connected to the face and extending rearward from the face.
Dependencies are inferred from the claim text.