HOLLOW, METALLIC GOLF CLUB HEAD WITH RELIEVED SOLE AND DENDRITIC STRUCTURES
 Inventors: Glenn H. Schmidt, Malibu; Richard
C. Helmstetter, Carlsbad, both of Calif.
 Assignee: Callaway Golf Company, Carlsbad,
 Appl. No.: 173,389
 Filed: Jan. 6,1994
Related U.S. Application Data
 Continuation-in-part of Ser. No. 29,553, Mar. 11,1993, Pat. No. 5,301,945, which is a continuation of Ser. No. 819,379, Jan. 15, 1992, Pat. No. 5,240,252, which is a continuationin-part of Ser. No. 791,322, Nov. 14, 1991, Pat. No. 5,180, 166, which is a continuation of Ser. No. 595,963, Oct. 16, 1990, Pat. No. 5,067,715.
 Int. CI.6 A63B 53/04
 U.S. CI 273/167 A; 273/174
 Field of Search 273/167 A-167 E,
273/167 G, 167 H, 167 K, 172, 174, 167 F
 References Cited
U.S. PATENT DOCUMENTS
A set of golf club heads, each head comprising a shell having toe and heel portions, and a front wall defining a ball striking face, and top or bottom walls, the ball striking faces of the heads having varying angularities with respect to vertical, the bottom wall of each head having a medial ridge, and forming two dished, similar shallow recesses, one recess between the ridge and heel portion and the other recess between the ridge and toe portion, the recesses located rearwardly of said front wall, one recess having an arcuate peripheral edge generally convex toward the heel portion and the other recess having an arcuate peripheral edge generally convex toward the toe portion.
45 Claims, 15 Drawing Sheets