US2003008724A1PendingUtilityA1

Golf putter

Priority: Aug 21, 2000Filed: Aug 21, 2001Published: Jan 9, 2003
Est. expiryAug 21, 2020(expired)· nominal 20-yr term from priority
Inventors:Ronald Griffin
A63B 53/02A63B 60/02A63B 53/0487A63B 53/0433A63B 53/0445A63B 53/0462A63B 53/007A63B 53/0441A63B 60/00
38
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Claims

Abstract

A golf putter including a head attached rigidly to a shaft through the center of mass to minimize lateral rotation and to promote a pendulum like stroke, having optimized mass and shape to create a powerful “sweet spot” enabling consistent distance control, superior “feel” and increased “touch” while providing tangible “forgiveness” for random changes in dynamics introduced by less skilled players; the head having a continuous face comprised of a non-radial contour to provide improved rebound trajectory by initiating overspin and minimizing outside effects on the ball until all gyroscopic properties allow it to become a stabilized mass. The head includes a narrow sole to decrease drag, a doze to brush back taller grass, increasing the odds of making putts launched from less manicured greens or fringe areas, and semi circular markings approximating the radius of a golf ball to enable alignment of the ball with the “sweet spot”.

Claims

exact text as granted — not AI-modified
What is claimed is:  
     
         1 . A golf putter comprising: 
 A shaft with a top end and a bottom end, said top end enclosed by a grip and said bottom end fixedly attached to a head at an angle ten degrees or greater from a direction perpendicular to said head and a longitudinal axis extending from said top end to said bottom end;    
     
     
         2 . A head having mass, a center of gravity, a top face having an alignment means, a bottom face having a narrow sole and rearwardly and upwardly extending doze portion, a front striking face having a non radial curvature and a sweet spot, a rear section having a cut out for concentrating said mass at a point of attachment of a shaft, a heel section and a distal toe section being made of a metallic or non-metallic material.  
     
     
         3 . The head of  claim 2  wherein said center of gravity is midway between said heel and distal toe sections at a point along a longitudinal axis of a shaft.  
     
     
         4 . The head of  claim 2  wherein said top face has an alignment means extending in a radial arc from said front face wherein a fulcrum of said arc is centered at said center of gravity of said head and defines said sweet spot.  
     
     
         5 . The head of  claim 2  wherein said bottom face has a narrow sole.  
     
     
         6 . The head of  claim 2  wherein said bottom face has a rearwardly and upwardly extending doze.  
     
     
         7 . The doze of  claim 6  wherein said doze extends upwardly and rearwardly at an angle of greater than 10 degrees from a horizontal plane.  
     
     
         8 . The head of  claim 2  wherein said front striking face has a surface forming a non-radial curvature vertically extending across said front striking face and a non-radial curvature horizontally extending across said front striking face whereby when a golf ball having a surface is struck by said front striking face surface, a one degree loft is imparted to said golf ball over a larger impact zone regardless of where on said front striking surface said front striking surface intersects said golf ball surface at a moment of impact.  
     
     
         9 . The front striking face surface of  claim 8  wherein said vertically and horizontally extending non-radial curvatures are defined by an arc derived from a smoothing of a series of individual non-radial surfaces across said front striking face.  
     
     
         10 . The individual non-radial surfaces of  claim 9  whereby each non-radial surface is defined by an non-radial curvature individually formulated to provide a surface which when in contact with said golf ball surface imparts a one degree loft to said golf ball regardless of where on said front striking face surface said front striking face surface intersects said golf ball surface at a moment of impact.  
     
     
         11 . The rear section of  claim 2  wherein said cut out removes mass from said head whereby said center of gravity is concentrated at an entry point of said shaft along said longitudinal axis of said shaft rearward of said front face, enabling a pendulum swing by a golfer.  
     
     
         12 . The entry point of  claim 11  wherein said entry point is located at a point midway between said heel and said toe portions of said putter head.  
     
     
         13 . The entry point of  claim 11  wherein said entry point is located a distance away from said point midway between said heel and said toe portions of said putter head. 
 A golf putter comprising:  
 
     
     
         14 . A shaft with a top end and a bottom end, said bottom end fixedly attached to a head and a longitudinal axis extending from said top end to said bottom end;  
     
     
         15 . A head having mass, a center of gravity, a top face having an alignment means, a bottom face having a narrow sole and rearwardly and upwardly extending doze portion, a front striking face having a non-radial curvature and a sweet spot, a rear section and a distal toe section.  
     
     
         16 . The head of  claim 15  wherein said center of gravity may be at any point between said heel and distal toe sections along a longitudinal axis of said shaft.  
     
     
         17 . The head of  claim 15  wherein said top face has an alignment means extending in a non-radial arc from said front face wherein a fulcrum of said non-radial arc is centered at said center of gravity of said head and defines said sweet spot.  
     
     
         18 . The head of  claim 15  wherein said bottom face has a rearwardly and upwardly extending doze.  
     
     
         19 . The doze of  claim 18  wherein said doze extends upwardly and rearwardly at an angle of greater than 10 degrees from a horizontal plane.  
     
     
         20 . The head of  claim 15  wherein said front striking face has a surface forming a non-radial curvature vertically extending across said front striking face and a one degree loft is imparted to said golf ball regardless of where on said golf ball surface said front striking surface intersects said golf ball surface at a moment of impact.  
     
     
         21 . The front striking face surface of  claim 20  wherein said vertically and horizontally extending radial curvatures are defined by an arc derived from a smoothing of a series of individual non-radial surfaces across said front striking face.  
     
     
         22 . The individual non-radial surfaces of  claim 21  whereby each non-radial surface is defined by an non-radial contour individually formulated to provide a surface which when in contact with said golf ball surface imparts a one degree loft to said golf ball regardless of where on said front striking face surface said front striking surface intersects said golf ball surface at a moment of impact.  
     
     
         23 . The rear section of  claim 15  wherein said cut out removes mass from said head whereby said center of gravity is concentrated at an entry point of said shaft along said longitudinal axis of said shaft rearward of said front face, enabling a pendulum swing by a golfer.  
     
     
         24 . The entry point of  claim 23  wherein said entry point is located at a point between said heel and said toe portions of said putter head.  
     
     
         25 . The putter head of  claim 15  being composed of metallic or non-metallic materials. 
 A golf putter head comprising:  
 
     
     
         26 . A head having a top face with an alignment means, a bottom face, a front striking face having a non-radial curvature, a sweet spot and a rear section.  
     
     
         27 . The head of  claim 26  wherein said top face has an alignment means extending in a non-radial arc from said front face wherein a fulcrum of said non-radial arc defines said sweet spot.  
     
     
         28 . The head of  claim 26  wherein said front striking face has a surface forming a non-radial curvature vertically extending across said front striking face and a one degree loft is imparted to said golf ball regardless of where on said front striking face surface said front striking surface intersects said golf ball surface at a moment of impact.  
     
     
         29 . The front striking face surface of  claim 28  wherein said vertically and horizontally extending non-radial curvatures are defined by an arc derived from a smoothing of a series of individual non-radial contours across said front striking face.  
     
     
         30 . The individual non-radial surfaces of  claim 29  whereby each non-radial surface is defined by a non-radial curve individually formulated to provide a surface which when in contact with said golf ball surface imparts a one degree loft to said golf ball regardless of where on said front striking face surface said front striking face surface intersects said golf ball surface at a moment of impact.

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