Golf club head with textured striking face
AssigneeDunlop Sports Co. Ltd.
InventorsPatrick Ripp, Jeff D. Brunski
Life of this patent
Estimating the term…
Abstract
A golf club head includes a striking face with a plurality of scorelines. A first virtual vertical plane is perpendicular to the striking face and passes through a toe-wardmost extent of the scorelines, and a second virtual vertical plane is parallel to the first virtual vertical plane and passes through a heel-wardmost extent of the scorelines. A central region bounded by the first virtual vertical plane, the second virtual vertical plane, and a striking face periphery has a first average surface roughness Ra1 of between about 40 μin and about 180 μin. And a majority of a toe region bounded by the first vertical plane and the striking face periphery is textured to have a second average surface roughness Ra2 no less than 1.5 times Ra1.
Claims16
A golf club head that, when oriented in a reference position, comprises:
- a loft greater than 15 degrees;
- a heel portion;
- a toe portion;
- a sole portion;
- a top portion;
- and
- a striking face, the striking face comprising:
- a striking face periphery;
- a plurality of scorelines, wherein a first virtual vertical plane is perpendicular to the striking face and passes through a toe-wardmost extent of the scorelines and a second virtual vertical plane is parallel to the first virtual vertical plane and passes through a heel-wardmost extent of the scorelines;
- a central region bounded by the first virtual vertical plane, the second virtual vertical plane, and the striking face periphery, the central region having a first average surface roughness Ra1 of between about 40 μin and about 180 μin;
- and
- a toe region bounded by the first vertical plane and the striking face periphery, a majority of the toe region being textured to have a second average surface roughness Ra2 no less than 1.5 times Ra1.
A golf club head comprising:
- a loft greater than 15 degrees;
- a heel portion;
- a toe portion;
- a sole portion;
- a top portion;
- and
- a striking face, the striking face comprising:
- a face center;
- a central striking face region bounded by a first virtual circle located in a plane of the striking face, centered at the face center, and having a radius no less than 10 mm, the central striking face region having a first average surface roughness Ra1 no greater than about 180 μin;
- and
- a peripheral striking face region bounded by a second virtual circle, located entirely outside of the central region and having a radius no less than 10 mm, the peripheral striking face region having a second average surface roughness Ra2 no less than about 270 μin.
Dependencies are inferred from the claim text.