Claims
- 1. A wood-type golf club head comprising:a body having a crown, a sole, a ribbon, a striking plate and a hollow interior, the body composed of a titanium alloy material, the striking plate having an interior surface toward the hollow interior and a smooth exterior surface opposite the interior surface, the striking plate having a thickness range of 0.010 inch to 0.200 inch, the body having a volume of 250 cubic centimeters to 400 cubic centimeters; and a thin layer disposed on the exterior surface of the striking plate, the thin layer composed of a material having a density lower than the density of the striking plate and selected from the group consisting of polyurethanes, polycarbonates, polyimides and polyamides, the thin layer having a thickness of 0.005 inch to 0.025 inch, the thin layer having a plurality of scorelines thereon.
- 2. A wood-type golf club head comprising:a body having a crown, a sole, a ribbon, a striking plate and a hollow interior, the body composed of a titanium alloy material, the striking plate having an interior surface toward the hollow interior and a smooth exterior surface opposite the interior surface, the striking plate having a thickness range of 0.010 inch to 0.200 inch, the striking plate having a core face area between 4.80 square inches and 5.50 square inches, the body having a volume of 250 cubic centimeters to 400 cubic centimeters; and a thin layer disposed on the exterior surface of the striking plate, the thin layer composed of a thermosetting polyurethane material having a density lower than the density of the striking plate, the thin layer having a thickness of 0.005 inch to 0.025 inch, the thin layer having a plurality of scorelines thereon; wherein the golf club head has a coefficient of restitution of at least 0.83 under USGA test conditions.
- 3. A wood-type golf club head comprising:a body having a crown, a sole, a ribbon, a striking plate and a hollow interior, the body composed of a metal material, the striking plate having an interior surface toward the hollow interior and a smooth exterior surface opposite the interior surface, the striking plate having a thickness range of 0.010 inch to 0.200 inch, the striking plate having a core face area between 4.80 square inches and 5.50 square inches, the body having a volume of 250 cubic centimeters to 400 cubic centimeters; and a thin layer disposed on the exterior surface of the striking plate, the thin layer having a central impact region composed of a polyurethane material having a Shore D hardness greater than 50 for low friction and low energy loss, and a peripheral impact region composed of a polyurethane material having a Shore D hardness lower than 40 for a high friction coefficient and a high energy loss, the thin layer having a thickness of 0.005 inch to 0.025 inch, the thin layer having a plurality of scorelines thereon; wherein the golf club head has a coefficient of restitution of at least 0.83 under USGA test conditions.
CROSS REFERENCES TO RELATED APPLICATIONS
This Application is a continuation application of U.S. patent application Ser. No. 09/678,942, filed on Oct. 3, 2000, now U.S. Pat. No. 6,428,427.
US Referenced Citations (13)
Continuations (1)
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Number |
Date |
Country |
Parent |
09/678942 |
Oct 2000 |
US |
Child |
10/064664 |
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US |