Golf club head
OwnerHiroto Setokawa, Masayuki Katoinventors
Life of this patent
Estimating the term…
Abstract
A golf club head comprises a face portion defining a clubface for striking a golf ball; the face portion provided in the clubface with a high-resilience part made of a metal material having a Young's modulus E of not less than 29 (GPa) but not more than 107 (GPa); and in a measuring state of the club head which is defined as being placed on a horizontal plane such that a clubshaft center line inclines at its lie angle within a vertical plane and the clubface inclines at its face angle with respect to the vertical plane, a moment of inertia of the club head around a horizontal axis passing a gravity point of the club head in parallel with the vertical plane, being not less than 1600 (g·sq.cm) but not more than 4000 (g·sq.cm).
Claims3
A golf club head comprising
- a face portion defining a clubface for striking a golf ball,
- the face portion provided in the clubface with a high-resilience part made of a metal material having a Young's modulus E of not less than 29 (GPa) but not more than 107 (GPa),
- in a measuring state of the club head which is defined as being placed on a horizontal plane such that a clubshaft center line inclines at its lie angle within a vertical plane and the clubface inclines at its face angle with respect to the vertical plane, a moment of inertia of the club head around a horizontal axis passing a gravity point of the club head in parallel with the vertical plane, being not less than 1600 (g·sq.cm) but not more than 4000 (g·sq.cm).
Dependencies are inferred from the claim text.