Golf ball with temperature indicator

1. A golf ball comprising a core and a cover wherein said cover on its surface incorporates a section comprising a thermochromic material, wherein the thermochromic material is capable of visually indicating whether the golf ball is above or below a predetermined temperature, further wherein a first section comprising an ink material is first created on the surface of said golf ball, the thermochromic section is applied over the first section, and wherein the color of the ink material is different from the color of the thermochromic section, wherein the visible indication is in two parts, wherein the first part is permanently displayed, and the second part is displayed after activation by a temperature change.

2. The golf of claim 1 wherein the thermochromic material is a member selected from the group consisting of cholesteric liquid crystals and leuco dye systems.

3. The golf ball of claim 1 , wherein the cover comprises at least one inner cover layer and at least one outer cover layer.

4. The golf ball of claim 1 , wherein the core comprises a liquid, gel or fluid filled core or core layer.

5. A golf ball comprising a core and a cover, the cover comprising at least one inner cover layer and at least one outer cover layer, wherein said cover incorporates on its surface an indicia, wherein the indicia is covered with a thermochromic section, and wherein the thermochromic section becomes clear or translucent at a predetermined temperature, thereby allowing the observation of the indicia, wherein the indicia is a color, a readable word or a logo.

6. The golf ball of claim 5 wherein the core comprises a liquid, gel or fluid filled core or core layer.

7. The golf ball of claim 5 , further comprising a temperature indicating mark printed on the cover.