Patent ID: 11957962
Assignee: KARSTEN MANUFACTURING CORPORATION
Field: Furniture, games (Other fields)
Classification: CPC A  Y | IPC A

Claim 5:
6. A putter type golf club head comprising:
a putter club face defined by a toe end, a heel end, a top rail and a sole;
a plurality of grooves disposed on the putter club face between the top rail and the sole, each of the plurality of grooves extending between the heel end and the toe end; and
a plurality of land portions extending between the plurality of grooves configured to contact a golf ball during impact;
wherein a width of each groove is measured in a direction extending from the top rail to the sole;
wherein the width of the plurality of grooves decreases in a direction extending from a center portion to the toe end and in a direction extending from the center portion to the heel end;
wherein a width of each land portion is measured in a direction extending from the top rail to the sole;
wherein the width of the plurality of land portions varies in a direction extending from the toe end to the heel end;
wherein a deepest portion of at least one groove is defined by a planar bottom surface portion of the groove when viewed in a horizontal cross section extending from the heel end to the toe end;
wherein the putter type club head has a loft angle less than 7 degrees; and
wherein a depth of a portion of the plurality of grooves is about 0.003 inch.