Other

Mitsuhiro Saso

Tomohiko Sato

Sunao Umemura

Yutaka Kawata

A wood type club is provided. A toe-side part and a heel-side part located between the crown part and the sole part of the head are provided with at least one concave groove opened outward in a horizontal direction and extending from the face part to the back part in a longitudinal direction to guide an air stream to the head in a swing action; and a whole or part of the concave groove has a curved part bulging outwardly so that an angle in which a concave groove bottom formed from an inlet of the concave groove to an inside thereof is inclined inward with respect to a line perpendicular to the face part is smaller than an angle in which a line connecting an inlet of the concave groove bottom and an outlet thereof is inclined inward with respect to the line perpendicular to the face part.

Wood club

A golf club having a metal wood club head including a toe, a heel, a club face, a sole, a rear profile, and a top profile shape. The club head is shaped to increase the moment of inertia of the club head. In one embodiment, a rear portion of the club head is truncated such that a top profile maximum width of the toe side and a top profile maximum width of the heel side are larger than a transverse top profile centerline width of the club head. The sole of the club head may have a sole recess which extends from the truncated region and through a portion of a center of the sole. In another embodiment, the wood club head approximates an elongated rectangular shape.

Metal wood club

The present invention provides a wood-type club constituted such that the toe-down effect and the covering effects of the head can be more reliably suppressed. Attitude-correcting portions ( ) extending from the impact face ( ) side to the back ( ) side of the head are provided in at the least the toe (T) side and the heel (H) side of the head relative to a center line passing longitudinally through the head center of gravity in either the side parts ( ) or the sole ( ) of the head ( ), and are formed such that a portion of the highspeed airflow impacting the head at downswing is captured by at the least two attitude-correcting portions, either maintaining the head in a proper attitude, or correcting the head to a proper attitude.

Wood-type club

A golf club for improving the flying distance of a ball overcomes toe-down phenomenon due to pulling of the shaft particularly by a skilled player enjoying a high head speed. The golf club further improves the head speed and the directional stability of a hit ball. The golf club has a center of gravity of the head shifted from the toe end of the shaft end by modifying the head shape to decrease the volume of the head by a certain amount at the toe end on the rear side thereof and to increase the head volume at the shaft end on the rear side by an amount equal to the decreased amount. This will reduce the rotational radius of the head about a vertical line, as a rotational center line, when the golf club is suspended at the upper end of the shaft. Furthermore, with a metal wood club, a head is provided with a face which comprises a spherical face formed in such a manner that the curvature in the transverse width direction becomes substantially equal to that in the vertical width direction.

Growing community of inventors

Hyogo, Japan

Mitsuhiro Saso