US Patent 7344451 Putter-type club head

A putter-type club head (20) having a body (22) and a peripheral mass belt (23) is disclosed herein. The body (22) is preferably composed of an aluminum alloy. The body (22) includes a face portion (24), a crown portion (26), a sole portion (28) and a column portion (30). The crown portion (26) and the sole portion (28) extend rearward from the face portion (24). The peripheral mass belt (23) includes a central mass portion (80), a heel arc member (82) and a toe arc member (84). The face portion (24), the crown portion (26), the sole portion (28) and the peripheral mass belt (23) define a central aperture (32), which separates the crown portion (26) from the sole portion (28) and the face portion (24) from the central mass portion (80). The crown portion (26) preferably has an alignment means (40) thereon for aiming a golf ball during putting.