The present invention relates to an improved wood-type golf club. More particularly, it relates to a golf club which is designed to give the golfer maximum margin of error in making contact with the club head and the ball to obtain a straight trajectory on the ball. The shaft and the club head are so aligned that if the center line of the shaft is extended it will intercept a plane positioned perpendicular to the base of the club head and pass through the center of gravity of the club head. The striking face of the club head has a number of horizontal corrugations, ranging from 1/64 to 1/8 inch in depth, which act as knuckle to strike the ball. The striking face of the club tapers inward from the bottom to top at an angle between about 10.degree. to 15.degree.. The area of the face nearest the toe of the club head is tapered inward toward the rear of the club head to compensate for side spin that would otherwise be imparted to a ball hit in the toe area. The club head is equipped with corrugations or runners 1/64 to 1/8 inch in depth on the base thereof to aid in keeping the club straight if the bottom of the club comes in contact with the ground prior to hitting the ball.
A golf club head (12) for a putter or chipper having a sighting device (16, 50, 44, 45) by which the golfer may easily align the club head to maintain its horizontal plane (31) parallel with the putting surface. The sole plate of the club head (12) is relieved by including two ribs (21, 22) extending from club face portion (13) to the rear of the club head to minimize dragging and scuffing on the grass of the putting surface during a stroke. Recesses (24) in the relieved areas are adapted to receive selectable size weights (26) which permit the weight of the club head to be adjusted to suit the individual and to also balance the head or to vary the heel-to-toe weight ratio. One golf club head (60) has a face (63, 70) having a plurality of deep vertical grooves (64, 72) therein between 1/32 and 1/8 inch wide, spaced by ribs (65, 71) to reduce the impact area of a golf ball with the golf club face (63, 70) to reduce back-spin and skidding of the golf ball.
Golf club head comprising an imaginary line formed by the intersection of the hitting surface (3) with a plane (P) passing through the center of the surface (O) and perpendicular, first, to the hitting plane (T) and second, to the plane (Q) tangent to the hitting surface (3) in the center of the surface (O), this imaginary line (L) being constituted by a series of portions of arcs of circles. The imaginary line is formed by two half-lines (L1, L2) adjacent to the center of the surface (O) and mutually asymmetrical, the number of portions is at least three, and the values of the radii of the arcs of circles are different from one adjacent portion to the next.
A golf putter comprising a shaft, a elongate head detachably connected to the shaft and having an impact wing on a longitudinal end thereof and a counterweight adjust means on another longitudinal end thereof, and a connecting structure connecting the shaft and head, in which the head is provided with an impact face on a surface of the impact wing which is positioned in a perpendicular relationship with a lateral axis of the head; and the connecting structure includes a threaded portion formed at a lower end of the shaft and a first thread head formed in the head in a position perparticular to a lateral axis of the head for thread engagement with the threaded portion.
A putter type golf club having a series of V-shaped grooves positioned immediately adjacent each other forming outermost ball gripping edges which grip a golf ball when the ball is struck by the putter.
A golf club which comprises a shaft and an improved club head, the club head having a toe portion, a heel portion, a sole, a front face defined by a bottom edge adjacent the sole, a heel side edge and a toe side edge adjacent the heel and toe portions respectively, and a top edge, the front face having a recessed portion extending substantially between the heel side edge and the toe side edge. The recessed portion may have various configurations from concave to the combination of different planar surfaces.
