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US 8,663,026 B2Granted
Golf club having a hollow pressurized metal head
AssigneeAlden J. Blowers
InventorsAlden J. Blowers, Babek Khamenian, Donald A. Anderson
Life of this patent
Estimating the term…
Abstract
A golf club having a hollow golf club head which is filled with a gas under pressure. The interior surface of the golf club head is coated with a solidified layer of plastic material. The pressurized gas permits the use of thinner face plates by compensating for forces generated when the face plate strikes a golf ball. The plastic layer is preferably applied through the process of rotational molding using a thermoplastic material.
Claims8
A method of manufacturing a golf club head comprising:
- providing a hollow golf club head having an interior surface;
- injecting a granular thermoplastic material into said hollow golf club head;
- heating said golf club head to a temperature at least equal to the melting point of said thermoplastic material;
- rotating said golf club head simultaneously through a vertical and horizontal axis while maintaining said temperature to thereby coat said interior surface with said thermoplastic material;
- and
- cooling said golf club head to solidify said thermoplastic material,
- filling said hollow golf club head with a gas under pressure,
- providing a valve having a plunger movable between open and closed positions carried by said hollow golf club head, moving said plunger to its open position to fill said hollow head with gas and moving said plunger to its closed position.
5 more elements
A method of manufacturing a golf club head comprising:
- providing a hollow golf club head having an interior surface;
- injecting a melted thermoplastic material into said hollow golf club head;
- rotating said golf club head simultaneously through a vertical and horizontal axis to thereby coat said interior surface with said thermoplastic material;
- said thermoplastic material solidifying within said golf club head during said rotating;
- filling said hollow golf club head with a gas under pressure;
- and
- providing a valve having a plunger movable between open and closed positions carried by said hollow golf club head, moving said plunger to its open position to fill said hollow head with gas and moving said plunger to its closed position.
4 more elements
Dependencies are inferred from the claim text.