Putter head having means for adjustment of the centre of gravity and weight

Abstract

The putter head is symmetrical about a plane and includes a toe member having an elongated striking surface and a heel member which extends to the rear of the toe member. In one embodiment of the putter head, a cavity extends inward from a rear or upper wall of the heel member. In another embodiment, a nut is attached to the rear or upper wall of the heel member. Plugs of differing weights are each adapted to be screwed into the cavity or into the central opening of the nut.

1 . A putter head having means for adjusting the weight and centre of gravity thereof, said putter head being symmetrical about a first plane of symmetry and including: a toe member having an elongated striking surface which lies in a second plane oriented normal to said first plane of symmetry, a heel member extending to the rear of said toe member and terminating at a rear surface, a plurality of differing weights each being symmetrical about a separate third plane of symmetry; and means for attachment of each said weight to said head such that said first plane of symmetry and said third plane of symmetry of said weight so attached are co-planar.  
   
   
       2 . In combination with the putter head of  claim 1 , a shaft for a handle which extends upwardly from said head, said shaft having a longitudinal axis which lies on said first plane of symmetry, said axis being spaced apart from an imaginary parallel line which intersects said second plane, said second plane being oriented such that the angle between said second plane and said line is between 0 degree and about 3 degrees, said angle, when greater than 0 degree, being downwardly opening.  
   
   
       3 . The putter head of  claim 1  wherein said toe member and heel member have an upper surface, said attachment means including a cavity formed in one of said rear surface and said upper surface, said weights each adapted to be separately accommodated in said cavity.  
   
   
       4 . The putter head of  claim 3  wherein said cavity is defined by a threaded cylindrical inner wall and each said weight is cylindrical and has a threaded outer wall for threadable mating with said inner wall.  
   
   
       5 . In combination with the putter head of  claim 3 , a shaft for a handle which extends upwardly from said head, said shaft having a longitudinal axis which lies on said first plane of symmetry, said axis being spaced apart from an imaginary parallel line which intersects said second plane, said second plane being oriented such that the angle between said second plane and said line is between 0 degree and about 3 degrees, said angle, when greater than 0 degree, being downwardly opening.  
   
   
       6 . A putter head of  claim 1  wherein said toe member and heel member have an upper surface, said attachment means being disposed on one of said rear surface and said upper surface and extending outwardly therefrom, said weights being of differing weights and lengths and each being adapted to be separately attached to said attachment means.  
   
   
       7 . The putter head of  claim 6  wherein said attachment means has a threaded opening and each said weight is cylindrical and has a threaded outer wall for threadable mating with said threaded opening.  
   
   
       8 . In combination with the putter head of  claim 6 , a shaft for a handle which extends upwardly from said head, said shaft having a longitudinal axis, which lies on said first plane of symmetry, said axis being spaced apart from an imaginary parallel line which intersects said second plane, said second plane being oriented such that the angle between said second plane and said line is between 0 degree and about 3 degrees, said angle, when greater than 0 degree, being downwardly opening.