A putter type golf club including a head, shaft and ball striking face, having its center of mass disposed at least 10 cm. behind the striking face creating an improved effective polar moment of inertia and a "shaft-force axis" disposed at a position relative to the center of mass creating a "self-aligning-stability" force throughout the acceleration portion of the putting stroke, wherein most of the head is made of lightweight material and a heavy weight is disposed in the head at a rearward location, at a substantial distance behind both the club head percussion center and the polar shaft axis.
A golf putter in which most of the clubhead mass is distributed at three or more prescribed locations within a "Mass Ring" approximately equidistant from, and as remote as possible from, the clubhead planar center of mass with the clubshaft axis preferably forward of the clubhead center of mass thus maximizing both putter and clubhead planar moment of inertia for improved putter performance during mis-hits. Maximum remote mass is achieved by interconnecting the remote high mass areas (Mass Ring) with the putterface striking area and the putter shaft connection point with a light weight rigid open (see thru) truss system so arranged to enhance the Sighting Field and/or sight or aim line on the putterhead while preventing undesirable vibration of individual clubhead members. Such Sighting Field and Sight Line can be further enhanced via use of one of several light weight replaceable and angular adjustable Sighting Fields and/or Sight Lines preferable to an individual golfer.
A putter-type club head (20) having a central aperture (32) with a rearward center of gravity is disclosed herein. The putter-type club head (20) has a body (22) that is preferably composed of stainless steel. The body (22) has a face portion (24), a crown portion (26), a sole portion (28) and an aft-mass portion (30). The face portion (24), the crown portion (26), the sole portion (28) and the aft-mass portion (30) define the central aperture (32). The crown portion (26) extends rearward from the face portion (24) over the aft-mass portion (30). The central aperture (32) separates the crown portion (26) from the sole portion (28) and the face portion (24) from the aft-mass portion (30). The crown portion (26) has an alignment means (40) thereon for aiming a golf ball during putting.
A number one wood-type golf club head comprising a body made of wood. A sole plate is secured to the bottom surface of the wooden body, and at least one cavity is provided in the wooden body and having an opening at the bottom surface, to thereby allow the golf club head to be elongated; the body having a length between a front end and a rear end thereof, from the viewpoint of the swing of the golf club, of more than 83 millimeters. This provides for a greater moment of inertia to obtain a stable drive.
A golf putter head 1 includes a head body having a face surface, and a head rear portion affixed to a back side of the head body and having a greater specific gravity than that of the head body. Provided that S1 represents a cross-sectional area of the head body with respect to a cross-section taken at a boundary portion K between the head body and the head rear portion and along a plane parallel to the face surface, whereas S2 represents a cross-sectional area of the head rear portion with respect to a cross-section taken at the boundary portion K and along a plane parallel to the face surface, a value of (S2/S1) is 1.1 or more and 2.0 or less.
A golf putter in which most of the clubhead mass is distributed at three or more individual or one or more arcuate locations within a "Mass Ring" approximately equidistant from, and as remote as possible from, the clubhead planar center of mass with the clubshaft axis preferably forward of the clubhead center of mass thus maximizing both putter and clubhead planar moment of inertia for improved putter performance during mis-hits. Maximum remote mass is achieved by interconnecting the remote high mass areas (Mass Ring) with the putterface striking area and the putter shaft connection point with a light weight rigid open (see thru) truss system so arranged to enhance the visibility of the Sighting Field and/or aim or Sight Line on the putterhead while preventing undesirable vibration of individual clubhead members.
