2007-209722 is referenced by 41 patents.

PROBLEM TO BE SOLVED: To provide a putter for the golf having a balancing-toy effect by forming a face part into a portal shape, reducing the weight of the face side and increasing the weight of the right/left rear sides, and providing a player with superior-directivity putting by preventing fluctuation of a head when putting, having an improved straight carrying property and obtaining rectilinear inertia.SOLUTION: The head 3 provided at the tip of the shaft 2 has extension parts 5 and 5 that extend rearward in the both side ends of the face part 4 and are formed into the portal shape in the plan view, weights 6 are embedded at positions in the rear ends of the both extension parts 5 and 5, a bottom plate 8 is fixed to the lower faces of the face part 4 and the extension parts 5 and 5, and a display member 11 of a sweet spot is attached to the upper face of the face part 4 using a groove 9 provided on the upper face of the face part 4 in parallel to the face 4a.

Title
Putter for golf
Application Number
2006-061816
Publication Number
2007-209722
Application Date
February 7, 2006
Publication Date
August 23, 2007
Inventor
Sato Shozaburo
Assignee
Sato Shozaburo
IPC
A63B 53/04
A63B 53/00