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US 12,533,555 B2Granted
Golf ball having mark
AssigneeSumitomo Rubber Industries, Ltd.
InventorsTakahiro Sajima, Hidetaka Inoue
Life of this patent
Estimating the term…
Abstract
A golf ball includes an assist mark 10 and a guide mark. The assist mark is straight in plan. The guide mark is distorted in plan. The guide mark is in the shape of an arrow as a whole. The guide mark looks straight to a player swinging a golf club. The player moves the head of the golf club along the direction of the guide mark.
Claims16
A golf ball comprising a guide mark, wherein
- the guide mark is shaped such that the guide mark is distorted in plan and that when a player hits the golf ball with a golf club, the guide mark is perceived by the player to be undistorted in a sight line view of the player, and
- wherein a central angle β of the guide mark with respect to a vertical direction is not less than 5° and not greater than 40°.
A golf ball comprising a first guide mark and a second guide mark, wherein
- the first guide mark is shaped such that the first guide mark is distorted in plan and that when the player hits the golf ball with a first golf club, the first guide mark is perceived by the player to be undistorted in a first sight line view of the player, and
- the second guide mark is shaped such that the second guide mark is distorted in plan and that when the player hits the golf ball with a second golf club, the second guide mark is perceived by the player to be undistorted in a second sight line view of the player,
- wherein a central angle β1 of the first guide mark with respect to a vertical direction is not less than 5° and not greater than 40°,
- wherein a central angle β2 of the second guide mark with respect to the vertical direction is not less than 5° and not greater than 40°, and
- wherein the angle β1 is greater than the angle β2.
2 more elements
Dependencies are inferred from the claim text.