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US 8,007,370 B2Granted
Metal injection molded putter
AssigneeCobra Golf Incorporated
InventorsRobert D. Hirsch, Peter L. Soracco
Life of this patent
Estimating the term…
Abstract
The present invention relates to a method for forming golf club head using metal injection molding and the resulting golf club head. The method of the invention allows for a lower volume of powdered metal than current metal injection molding processes thereby decreasing overall production cost.
Claims8
A method of making a golf club head comprising the steps of:
- providing a frame composed of a first material;
- providing a feedstock comprising a powdered metal and a binding agent;
- positioning the frame into a mold;
- injection molding the feedstock around the frame to form an intermediate part having a first size;
- debinding the golf club head to remove the binding agent;
- sintering the golf club head to form a finished golf club head having a second size about 10 percent to about 20 percent smaller than the first size;
- wherein the step of positioning the frame into a mold further comprises providing a mold designed to provide a plurality of voids in the molded product, and wherein the plurality of voids accounts for about 10 percent to 75 percent of the total possible volume of the mold;
- and further comprising the step of filling the plurality of voids with a second material after sintering the golf club head.
5 more elements
Dependencies are inferred from the claim text.