Golf ball
AssigneeBridgestone Sports Co., Ltd.
InventorsHirotaka Shinohara, Takuichi Shimizu
Life of this patent
Estimating the term…
Abstract
A golf ball wherein a slide amount Ds is 1.05 mm or less and a post-slide contact time Tc is 600 μs or more in the case where a golf ball 140 is dropped freely from a height position of 3 m above and away from a collision surface 130a inclined 58 degrees with respect to a horizontal direction to collide with the collision surface, the slide amount Ds being a vertical displacement of the golf ball from when the golf ball starts sliding on the collision surface to when the golf ball stops sliding on the collision surface, and the post-slide contact time Tc being a period from when the golf ball stops sliding on the collision surface to when the golf ball leaves the collision surface.
Claims8
A golf ball comprising:
- a cover;
- and
- a paint film covering the cover,
- wherein the paint film is formed using, as a main component, urethane paint composed of a polyol that is a main agent and a polyisocyanate that is a curing agent,
- the polyol is polyester polyol,
- the paint film is free of polyrotaxane, and
- a slide amount Ds is 1.05 mm or less and a post-slide contact time Tc is 600 μs or more in the case where the golf ball is dropped freely from a height position of 3 m above and away from a collision surface inclined 58 degrees with respect to a horizontal direction to collide with the collision surface, the slide amount Ds being a vertical displacement of the golf ball from when the golf ball starts sliding on the collision surface to when the golf ball stops sliding on the collision surface, and the post-slide contact time Tc being a period from when the golf ball stops sliding on the collision surface to when the golf ball leaves the collision surface.
Dependencies are inferred from the claim text.