Putter head
A putter-type club head ( 20 ) has a body ( 22 ) that is preferably composed of a material having a density ranging from ranging from 2.0 g/cm 3 to 3.0 g/cm 3 . The body ( 22 ) has a plurality of mass ports ( 50, 52 and 54 ) and a plurality of mass members ( 56, 58 , and 60 ), each of which is located in a respective mass port. The body ( 22 ) further includes a heel aperture ( 34 ) and a toe aperture ( 36 ).
1. A putter-type club head comprising:
a body comprising a front section, an aft section, a heel section, a toe section and a central section, the body having a heel aperture defined by the heel section, central section, front section and aft section, the body having a toe aperture defined by the toe section, central section, front section and aft section, a face wall of the front section having a first mass port and a second mass port, a sole wall of the central section having a third mass port;
a first mass member disposed in the first mass port;
a second mass member disposed in the second mass port;
a third mass member disposed in the third mass port; and
a crown plate placed within a recess within the central section of the body;
wherein the putter-type club head has a moment of inertia about the Iyy axis through the center of gravity of the club head of at least 500 g-cm 2 .
2. The putter-type club head according to claim 1 wherein the crown plate comprises an alignment indicia.
3. The putter-type club head according to claim 1 wherein each of the first mass member, the second mass member and the third mass member is composed of a material with a density greater than the density of the material of the body.
4. The putter-type club head according to claim 1 wherein each of the first mass member, the second mass member and the third mass member is composed of a material having a density ranging from 6.0 g/cm 3 to 20.0 g/cm 3 .
5. The putter-type club head according to claim 4 wherein each of the first mass member, the second mass member and the third mass member is composed of a material selected from the group consisting of brass, stainless steel, tungsten, silver, gold, nickel, nickel based alloys, iron based alloys, tin, copper and platinum.
6. The putter-type club head according to claim 1 wherein the body is composed of a material having a density ranging from 0.90 g/cm 3 to 6.0 g/cm 3 .
7. The putter-type club head according to claim 1 wherein the body is composed of a material selected from the group consisting of aluminum, aluminum alloy, magnesium, magnesium alloy, titanium and titanium alloy.
8. A putter-type club head comprising;
a body comprising a front section, an aft section, a heel section, a toe section and a central section, the body having a heel aperture defined by the heel section, central section, front section and aft section, the body having a toe aperture defined by the toe section, central section, front section and aft section, a face wall of the front section having a first mass port and a second mass port, a sole wall of the central section having a third mass port;
a first mass member disposed in the first mass port;
a second mass member disposed in the second mass port;
a third mass member disposed in the third mass port;
wherein the putter-type club head has a moment of inertia about the Iyy axis through the center of gravity of the club head of at least 500 g-cm 2 ;
wherein the sole wall of the central section has a slot proximate to the front section.
9. A putter-type club head comprising:
a body comprising a front section, an aft section, a heel section, a toe section and a central section, the body having a heel aperture defined by the heel section, central section, front section and aft section, the body having a toe aperture defined by the toe section, central section, front section and aft section, a face wall of the front section having a first mass port and a second mass port, the central section having a third mass port and a fourth mass port, the body has a mass ranging from 200 grams to 1000 grams;
a first mass member threadingly engaged in the first mass port;
a second mass member threadingly engaged in the second mass port;
a third mass member threadingly engaged in the third mass port;
a fourth mass member threadingly engage in the fourth mass port; and
a crown plate disposed on the central section, the crown plate composed of a non-metallic material.