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US 7,070,518 B2Granted
Golf ball with temperature indicator
AssigneeCallaway Golf Company
InventorThomas J. Kennedy, III
Life of this patent
Estimating the term…
Abstract
A golf ball having an integral means for sensing temperature whereby a golfer can readily determine if a golf ball is at the optimum temperature for play. For purposes of indicating temperature, the ball incorporates a thermochromic coating that will change color or become transparent or translucent at a predetermined temperature.
Claims5
A golf ball comprising:
- a core;
- a cover disposed on the core, the cover composed of a material selected from the group consisting of ionomers, polyurethane and blends thereof, the cover having a surface;
- and,
- a primer coat disposed on the surface of the cover, the primer coat comprising a leuco dye system, the leuco dye system capable of indicating whether the golf ball is above or below a predetermined temperature, the leuco dye system comprising a spirolactone component, a color developer component, a polar solvent component and a salt component.
1 more element
A golf ball comprising:
- a core;
- a cover disposed on the core, the cover composed of a material selected from the group consisting of ionomers, polyurethane and blends thereof, the cover having a surface;
- and,
- a coating layer disposed on the surface of the cover, the coating layer comprising a leuco dye system, the leuco dye system capable of indicating whether the golf ball is above or below a predetermined temperature, the leuco dye system comprising
- a spirolactone component selected from the group consisting of fluorans, crystal violet lactone, spiropyrans and fulgides,
- a color developer component selected from the group consisting of bisphenol A, 1,2,3 triazoles, octyl phydroxybenzoate and 4-hydroxycoumarin derivatives,
- a polar solvent component selected from the group consisting of lauryl alcohol, cetyl alcohol and butyl stearate, and
- a salt component.
5 more elements
Dependencies are inferred from the claim text.