Golf Putter Head

Abstract

A golf putter head includes a head body, and a face plate unit disposed on the head body and having one surface to serve as a putting face. The face plate unit has a plurality of faces surrounding an axis thereof and is rotatably coupled to the head body so that the face plate unit is rotatable about the axis to make one of the faces of the face plate unit serve as the putting face.

1 . A golf putter head, comprising a head body, and a face plate unit disposed on said head body and having one surface to serve as a putting face;
 wherein said face plate unit has a plurality of faces surrounding an axis thereof and is rotatably coupled to said head body so that said face plate unit is rotatable about the axis to make one of said faces of said face plate unit serve as said putting face.   
     
     
         2 . The golf putter head of  claim 1 , wherein said head body includes a plate part having upper and lower surfaces, said golf putter head further comprising a rotary joint mechanism by which said face plate unit is rotatably coupled to one of said upper and lower surfaces of said plate part, said rotary joint mechanism including a shaft member, which is provided on one of said head body and said face plate unit, and an axial hole, which is formed in another one of said head body and said face plate unit and is for receiving said shaft member. 
     
     
         3 . The golf putter head of  claim 2 , wherein:
 said face plate unit further has upper and lower end faces connecting with upper and lower sides of said plurality of faces, respectively;   said axial hole is a through hole formed in said head body;   said shaft member is a projection formed on one of said upper and lower end faces of said face plate unit, which is adjacent to said head body; and   said projection is rotatably inserted into said through hole and is temporarily fixed.   
     
     
         4 . The golf putter head of  claim 1 , wherein each of said plurality of faces of said face plate unit is provided with a face plate. 
     
     
         5 . The golf putter head of  claim 1 , wherein each of said plurality of faces of said face plate unit is formed to have a recess and has a face plate filled in said recess. 
     
     
         6 . A golf putter head, comprising:
 a head body formed with an opening from a front side thereof, said front side being adapted for facing toward a golf ball when putting; and   a face plate unit with one surface filled in said opening of said head body to serve as a putting face of said golf putter head;   wherein said face plate unit has a plurality of faces surrounding an axis thereof and is rotatably coupled to said head body so that said face plate unit is rotatable about the axis to make one of said faces of said face plate unit serve as said putting face.   
     
     
         7 . The golf putter head of  claim 6 , further comprising a rotary joint mechanism, by which said face plate unit is rotatably coupled to said head body, wherein said rotary joint mechanism includes a shaft member, which is provided on one of said head body and said face plate unit, and an axial hole, which is formed in another one of said head body and said face plate unit and is for receiving said shaft member. 
     
     
         8 . The golf putter head of  claim 7 , wherein said head body has a sole surface to function as a sole when putting, and said axial hole and said shaft member are rotatably coupled along a direction substantially parallel to said sole surface. 
     
     
         9 . The golf putter head of  claim 8 , wherein:
 said head body is further formed with upper, lower, left and right inner walls that surround said opening, said upper and lower inner walls being substantially parallel to said sole surface, said left and right inner walls being substantially perpendicular to said sole surface;   said face plate unit further has left and right end faces connecting with left and right sides of said plurality of faces, respectively, and is rotatably coupled to said head body such that the axis is substantially parallel to said sole surface; and   said axial hole and said shaft member are rotatably coupled between at least one of said left and right inner walls and at least a respective adjacent one of said left and right end faces.   
     
     
         10 . The golf putter head of  claim 8 , wherein:
 said head body includes lower, left and right inner walls, and is further formed with an upper opening facing said lower inner wall, such that said opening is surrounded by said lower, left and right inner walls and said face plate unit is exposed upwardly from said upper opening, said lower inner wall being substantially parallel to said sole surface, said left and right inner walls being substantially perpendicular to said sole surface;   said face plate unit further has left and right end faces connecting with left and right sides of said plurality of faces, respectively, and is rotatably coupled to said head body such that the axis is substantially parallel to said sole surface; and   said axial hole and said shaft member are rotatably coupled between at least one of said left and right inner walls and at least a respective adjacent one of said left and right end faces.   
     
     
         11 . The golf putter head of  claim 8 , wherein:
 said head body includes upper, left and right inner walls, and is further formed with a lower opening facing said upper inner wall, such that said opening is surrounded by said upper, left and right inner walls and said face plate unit is exposed downwardly from said lower opening, said upper inner wall being substantially parallel to said sole surface, said left and right inner walls being substantially perpendicular to said sole surface;   said face plate unit further has left and right end faces connecting with left and right sides of said plurality of faces, respectively, and is rotatably coupled to said head body such that the axis is substantially parallel to said sole surface; and   said axial hole and said shaft member are rotatably coupled between at least one of said left and right inner walls and at least a respective adjacent one of said left and right end faces.   
     
     
         12 . The golf putter head of  claim 7 , wherein said head body has a sole surface to function as a sole when putting, and said axial hole and said shaft member are rotatably coupled along a direction substantially perpendicular to said sole surface. 
     
     
         13 . The golf putter head of  claim 12 , wherein:
 said head body is further formed with upper, lower, left and right inner walls that surround said opening, said upper and lower inner walls being substantially parallel to said sole surface, said left and right inner walls being substantially perpendicular to said sole surface;   said face plate unit further has upper and lower end faces connecting with upper and lower sides of said plurality of faces, respectively, and is rotatably coupled to said head body such that the axis is substantially perpendicular to said sole surface; and   said axial hole and said shaft member are rotatably coupled between at least one of said upper and lower inner walls and at least a respective adjacent one of said upper and lower end faces.   
     
     
         14 . The golf putter head of  claim 7 , wherein said axial hole and said shaft member are rotatably coupled to permit movement of said face plate unit between a locked position, where said one of said faces of said face plate unit serving as said putting face is engaged by an inner wall surrounding said opening so as to keep said face plate unit from rotating, and an unlocked position, where said face plate unit is shifted from said locked position so as to be freely rotatable. 
     
     
         15 . The golf putter head of  claim 14 , wherein said axial hole is a long hole, and said shaft member is inserted into said long hole so as to be moveable between said locked position and said unlocked position. 
     
     
         16 . The golf putter head of  claim 15 , further comprising a fixing member for temporarily fixing said shaft member in said locked position.