Golf club head and method for manufacturing the same
AssigneeSRI Sports Limited
InventorTomoya Hirano
Life of this patent
Estimating the term…
Abstract
A golf club head has a hollow structure comprising a metallic main body provided in a crown portion with a crown opening, and a metallic crown plate fitted in the opening. In order to lower the center of gravity by reducing the weight of the crown portion, the thickness of the crown plate is decreased, and the crown plate is butt welded to the main body without substantial overlap.
Claims11
A golf club head having a hollow structure comprising
- a metallic main body provided in a crown portion with a crown opening and
- a metallic crown plate fitted in the opening, wherein
- the edge of the crown plate is butt welded to the edge of the main body around the crown opening, and
- in the welded butt joint between the crown plate and the main body, a fusion zone of which width is at most 3.0 mm at the outer surface of the crown portion is formed.
A golf club head having a hollow structure comprising
- a metallic main body provided in a crown portion with a crown opening and
- a metallic crown plate fitted in the opening, wherein
- the edge of the crown plate is butt welded to the edge of the main body around the crown opening, and
- the main body has a specific gravity, and the crown plate has a specific gravity less than that of the main body.
A method for manufacturing a golf club head, the golf club head having a hollow structure comprising a metallic main body provided in a crown portion with a crown opening and a metallic crown plate fitted in the opening, wherein the edge of the crown plate is butt welded to the edge of the main body around the crown opening, the method comprising:
- preparing the main body provided along the edge of the crown opening with a crown-plate support having a width of at most 0.8 mm;
- fitting the crown plate in the crown opening so that the peripheral edge portion of the crown plate is supported by the crown-plate support;
- and
- butt welding the edge of the crown plate to the edge of the main body around the crown opening by irradiating a laser beam.
Dependencies are inferred from the claim text.