US 5,989,135 A · Luminescent golf ball

Abstract

The golf ball of the present invention has a white core which has a bright, white outer surface and a relatively thin, translucent cover composed of SURLYN.RTM. having a thickness of about 0.06 inches or less. The translucent SURLYN.RTM. cover contains between 6% and 12% by weight photostorage material, of the type having components such as aluminum oxide, strontium oxide, calcium oxide, europium oxide and boron oxide. A brightly colored fluorescent dye at a concentration between 0.01% and 0.04% by weight can also be added to a SURLYN.RTM. cover material to produce a golf ball of the present invention that is brightly colored. When the golf ball of the present invention has no fluorescent dye in its cover, it is substantially white in appearance, is visible in daylight and after being charged by exposure to light, emits a long lasting bright glow of light for high visibility in the dark. When the golf ball of the present invention has an added preferred bright yellow fluorescent dye, it can be seen in daylight and twilight conditions as easily as a standard yellow ball and after being charged by exposure to light also emits a long lasting bright glow of light for high visibility in the dark.

Claims9

Dependent claims

A luminescent golf ball comprising:

a flexible core having a light reflective substantially white outer surface,
a thin cover surrounding the core having a thickness of substantially no more 0.06 inches, the cover also containing photostorage material at a concentration of no less than 3% and no more than 16% by weight for absorbing radiant energy and emitting a glow of light,
the photostorage material in the golf ball cover storing radiant energy and re-emitting a glow of light, the substantially white core also reflecting the glow of light away from the golf ball, the thin cover allowing the light to escape from the golf ball, the thin cover also allowing the white cover to show through the cover during bright daylight conditions, whereby the golf ball glows brightly in dark conditions and therefore is easily seen on a golf course at twilight or at dark and whereby the golf ball appears substantially white during bright daylight conditions and is therefore visible on a golf course in bright, daylight conditions.

A brightly colored luminescent golf ball comprising:

a flexible rubber core having a substantially white outer surface,
a partially translucent cover surrounding the rubber core, the partially translucent cover further comprising at least two layers, at least one of the at least two layers of the partially translucent cover having a concentration of photostorage material and at least one of the at least two layers of the partially translucent cover having a concentration of brightly colored dye whereby the average concentration of the photostorage material throughout the at least two layers of the partially translucent cover is more than 3% by weight and less than 16% by weight and the average concentration of the brightly colored dye throughout the at least two layers of the partially translucent cover is more than 0.01% by weight and less than 0.1% by weight,
the brightly colored dye in the at least one of the at least two layers of the golf ball cover and the substantially white outer surface of the core cooperating to impart a brightly colored appearance to the golf ball whereby the golf ball is brightly colored and can be easily seen and found in daylight conditions on a golf course, the photostorage material in the golf ball cover also absorbing radiant energy and re-emitting a glow of light, the substantially white core also reflecting the glow of light away from the golf ball, whereby the golf ball glows brightly in dark conditions and therefore is also easily seen and found at twilight or in the dark on a golf course.

Dependencies are inferred from the claim text.

Luminescent golf ball

Life of this patent

Luminescent golf ball

Life of this patent

Abstract

Claims9