Back to results
US 6,855,070 B2Granted
Infrared heating method for creating cure gradients in golf balls and golf balls cores
AssigneeAcushnet Company
InventorsMatthew F. Hogge, Michael J. Sullivan
Life of this patent
Estimating the term…
Abstract
This invention is directed to a golf ball core that has hardness gradients created in its outer skin by the application of high temperatures from infrared radiation. The outer 0.001 to 0.040 inches of the core has a different hardness than the rest of the core. The skin can either be harder or softer than the rest of the core. The core can be compounded by materials that will only be reactive at temperatures produced by infrared radiation.
Claims7
A golf ball comprising:
- a thermoset material formed into pre-molded core;
- the pre-molded core including an outer layer gradient coated by infrared radiating curing of 0.001 to 0.050 inches thick;
- the outer layer gradient having a shore D hardness of at least 3 points different from a portion of the core not subject to infrared curing;
- and
- a cover disposed about the core.
2 more elements
Dependencies are inferred from the claim text.