John P Molitor

US Patent:

60337249, Mar 7, 2000

Filed:

Oct 26, 1998

Appl. No.:

9/178633

Inventors:

John Peter Molitor - Hatfield MA

Assignee:

Spalding Sports Worldwide, Inc. - Chicopee MA

International Classification:

B05D 508
B05D 722
B05D 136
B32B 2700

US Classification:

427135

Abstract:

A coating system and method for a golf ball injection mold having a land area and a patterned wall defining a hemispherical cavity is characterized by the application of a primer and a fluoropolymer top coat layer at least the patterned wall. The combined thickness of the coatings is no greater than 0. 0007 inches. Owing to the thin coating, a golf ball molded in the cavity is easily ejected therefrom.

US Patent:

58275673, Oct 27, 1998

Filed:

Nov 27, 1996

Appl. No.:

8/753674

Inventors:

John Peter Molitor - Hatfield MA

International Classification:

B05D 312
B05D 508
B05D 136

US Classification:

427135

Abstract:

Disclosed herein is a method of preparing a game ball mold cavity for application of a coating system. A dual region coating system for a game ball mold and a coating application method also are disclosed. The mold preparation method provides for a longer use of a game ball mold than results when conventional mold preparation techniques are used. The dual region coating system comprises a fluorocarbon polymer in the hemispherical opening of the mold cavity, and a metal, such as nickel, impregnated with a fluorocarbon polymer on the land area. The dual region coating system of the invention is particularly useful for making golf ball cores containing zinc-diacrylate and/or zinc dimethacrylate, as these materials tend to adhere to the walls of a mold cavity.