Patent ID: 9555296
Date: 2017-01-31
CPC Classifications: A63B

Claim:
1. A set of iron-type golf clubs, comprising: a golf club including a golf club head, a grip and a shaft interposed between, and coupled to, the golf club head and the grip, wherein the golf club head comprises a main body, a muscle back shell, and a plurality of weight inserts, including at least a heel weight and a toe weight, wherein the main body and the muscle back shell combine to define a lower cavity and the heel weight and the toe weight are disposed in the lower cavity, wherein the golf club head is constructed so that a ratio of a moment of inertia about a vertical axis extending through the center of gravity of the golf club head and a moment of inertia about a longitudinal axis of the shaft is less than 2.25, wherein the golf club has a loft less than about 28°, and wherein the golf club has a blade length that is less than about 80 mm.