Putter golf club head with elastomer fill

A golf club head comprising:

• a putter body having a hosel, a toe end, a heel end, a rear periphery, a top surface, a sole, a strike face, a cavity,
• the golf club head further comprising a soleplate, an elastomer fill, and one or more suspended members;
• wherein the golf club head has a weight in range of 340 to 365 grams;
• wherein a rear plane is tangent to the rear periphery and perpendicular to a ground plane;
• wherein the strike face comprises a strike face center point that is equidistant from the top surface and sole of the putter body;
• a loft plane is tangent to the strike face,
• wherein the loft plane defines a strike face loft angle between 0 degrees and 5 degrees;
• a midplane intersecting the strike face center point, and is perpendicular to the loft plane;
• wherein the cavity comprises a front wall, a back wall, a toe side wall, a heel side wall, a top wall, a height, and a width,
• wherein the cavity is perpendicular to the sole,
• wherein the height of the cavity is measured from the sole to the top wall of the cavity,
• wherein the width of the cavity is measured from the front wall of the cavity to the back wall of the cavity,
• wherein the front and back walls of the cavity do not extend to or intersect with the mid-plane such that the top wall does not intersect with the midplane and the entire cavity is beneath the midplane,
• wherein the cavity front wall is distanced from the strike face a distance in the range of 0.250 to 0.450 inches and the cavity rear wall is a distance to the rear periphery in the range of 0.025 to 0.075 inches,
• such that the cavity is positioned closer to the rear periphery than to the strike face ensuring that the cavity does not affect the material properties or performance of the strike face,
• wherein the side walls of the cavity do not extend to or intersect with the rear plane,
• wherein the side walls of the cavity do not extend to or intersect with the loft plane,
• wherein the front wall of the cavity has a greater height than the back wall of the cavity;
• the soleplate is flush with the sole of the body, and encloses the cavity,
• wherein the soleplate contains one or more apertures;
• wherein the elastomer fill is partially or fully disposed within the cavity;
• and
• wherein the one or more suspended members each have a mass in a range of 1 gram to 15 grams;
• wherein one or more suspended members are completely surrounded by the elastomer fill;
• wherein the top surface of the putter body spans from the toe end to the heel end and has a slope from the toe end to the heel end of the putter body;
• wherein the top surface further comprises an alignment indicium located an equidistance from the heel end and to the to toe end of the top surface.

A method of forming a putter head, comprising:

• milling a putter head body from a block of material to include a toe end, a heel end, a rear wall, a top surface, a sole, a strike face, and a cavity positioned perpendicular to the sole that extends towards the top surface;
• wherein the cavity comprises a front wall, a back wall, a toe side wall, a heel side wall, a top wall, a height, and a width,
• and
• wherein a rear plane is tangent to the rear periphery and perpendicular to a ground plane;
• wherein the strike face comprises a strike face center point that is equidistant from the top surface and sole of the putter body;
• a loft plane is tangent to the strike face,
• wherein the loft plane defines a strike face loft angle between 0 degrees and 5 degrees;
• a midplane intersecting the strike face center point, and is perpendicular to the loft plane;
• wherein the front and back walls of the cavity do not extend to or intersect with the mid-plane such that the top wall does not intersect with the midplane and the entire cavity is beneath the midplane,
• wherein the cavity front wall is distanced from the strike face a distance in the range of 0.250 to 0.450 inches and the cavity rear wall is a distance to the rear periphery in the range of 0.025 to 0.075 inches,
• such that the cavity is positioned closer to the rear periphery than to the strike face ensuring that the cavity does not affect the material properties or performance of the strike face,
• affixing a sole plate to the sole, covering the cavity, wherein the sole plate contains one or more apertures;
• coating the putter with a protective finish;
• and
• introducing an elastomeric fill to the cavity via injection molding through the one or more apertures;
• introducing one or more suspended members within the elastomer fill;
• wherein the one or more suspended members each have a mass in a range of 1 gram to 15 grams;
• wherein the one or more suspended members are completely surrounded by the elastomer fill;
• wherein the top surface of the putter body spans from the toe end to the heel end and is generally parallel to the ground plane;
• wherein the top surface further comprises an alignment indicium located an equidistance from the heel end and to the to toe end of the top surface.