Golf club head

Abstract

The present invention comprises a golf club head that is adapted to be swung through an incoherent material to strike a golf ball. The golf club head has a body having an aperture. The aperture reduces the resistance of the golf club head to motion through the incoherent material. In an embodiment, the present invention comprises a plurality of apertures that reduce such resistance.

1 . A golf club head that is adapted to be swung through an incoherent material to strike a golf ball, the golf club head comprising: 
 a body having an aperture,    whereby the aperture reduces the resistance of the golf club head to motion through the incoherent material.    
     
     
         2 . The golf club head of  claim 1  having a striking surface and a rear surface, and wherein the aperture has a cross sectional area through the striking surface that is a first area and a cross sectional area through the rear surface that is a second area, and wherein the second area is greater than the first area.  
     
     
         3 . The golf club head of  claim 2  wherein the aperture has a substantially rectangular shape.  
     
     
         4 . The golf club head of  claim 3  having a striking surface, a rear surface, and a plurality of apertures and wherein for a plurality of apertures the apertures have a cross sectional area through the striking surface that is a first area and a cross sectional area through the rear surface that is a second area, and wherein the second area for a particular aperture is greater than the first area for the particular aperture.  
     
     
         5 . The golf club head of  claim 1  wherein the aperture has a circular shape.  
     
     
         6 . The golf club head of  claim 5  having a striking surface, a rear surface, and a plurality of apertures and wherein for a plurality of apertures the apertures have a cross sectional area through the striking surface that is a first area and a cross sectional area through the rear surface that is a second area, and wherein the second area for a particular aperture is greater than the first area for the particular aperture.  
     
     
         7 . The golf club head of  claim 1  wherein: 
 the body has a striking surface and a rear surface;    the aperture passes through the striking surface, the body, and the rear surface; and    the aperture has a substantially rectangular shaped cross section in the plane of the striking surface, the aperture has a cross sectional area through the striking surface that is a first area, the aperture has a cross sectional area through the rear surface that is a second area, and wherein the second area is greater than the first area.    
     
     
         8 . The golf club head of  claim 7  wherein: 
 the body has a sole portion; and    the aperture is disposed substantially parallel with the sole portion.    
     
     
         9 . The golf club head of  claim 1  wherein: 
 the body has a striking surface and a rear surface;    the aperture passes through the striking surface, the body, and the rear surface; and    the aperture has a substantially rectangular shaped cross section in the plane of the striking surface, the aperture has a cross sectional area through the striking surface that is a first area, the aperture has a cross sectional area through the rear surface that is a second area, and wherein the second area is greater than the first area.    
     
     
         10 . The golf club head of  claim 9  wherein: 
 the body has a sole portion; and    the aperture is disposed substantially perpendicular with the sole portion.    
     
     
         11 . The golf club head of  claim 1  further comprising a plurality of apertures and wherein: 
 the body has a striking surface, a rear surface, and a sole portion;    the apertures pass through the striking surface, the body, and the rear surface;    the apertures have substantially rectangular shaped cross sections in the plane of the striking surface, the apertures have a cross sectional area through the striking surface that is a first area, the apertures have a cross sectional area through the rear surface that is a second area, and wherein the second area for a particular aperture is greater than the first area for the particular aperture; and    wherein the apertures are disposed in substantially parallel alignment with another aperture and disposed in substantially parallel alignment to the sole portion.    
     
     
         12 . The golf club head of  claim 1  further comprising a plurality of apertures and wherein: 
 the body has a striking surface, a rear surface, and a sole portion;    the apertures pass through the striking surface, the body, and the rear surface;    the apertures have substantially rectangular shaped cross sections in the plane of the striking surface, the apertures have a cross sectional area through the striking surface that is a first area, the apertures have a cross sectional area through the rear surface that is a second area, and wherein the second area for a particular aperture is greater than the first area for the particular aperture; and    wherein the apertures are disposed in substantially parallel alignment with another aperture and disposed in substantially perpendicular alignment to the sole portion.    
     
     
         13 . The golf club head of  claim 1  further comprising a plurality of apertures and wherein: 
 the body has a sole portion;    the apertures have substantially rectangular shaped cross sections;    wherein the apertures are disposed in substantially parallel alignment with another aperture and disposed in substantially parallel alignment to the sole portion; and    wherein a first aperture is closer to the sole portion than a second aperture and the first aperture has a cross sectional area through the striking surface that is a first area, the second aperture has a cross sectional area through the striking surface that is a second area, and wherein the first area is greater than the second area.    
     
     
         14 . The golf club head of  claim 1  further comprising a plurality of apertures and wherein: 
 the body has a sole portion and a sweet spot;    the apertures have substantially rectangular shaped cross sections;    wherein the apertures are disposed in substantially parallel alignment with another aperture and disposed in substantially perpendicular alignment to the sole portion; and    wherein the apertures have cross sectional areas through the striking surface;    and the cross sectional areas of an aperture generally are a smaller area at the sweet spot and are increasingly large as distance from the sweet spot to an aperture increases.    
     
     
         15 . The golf club head of  claim 1  further comprising a sweet spot, and further comprising a plurality of apertures, wherein the apertures are disposed symmetrically about the sweet spot.  
     
     
         16 . The golf club head of  claim 15  having a striking surface, a rear surface, and wherein an aperture has a cross sectional area through the striking surface that is a first area and a cross sectional area through the rear surface that is a second area, and wherein the second area is greater than the first area.  
     
     
         17 . The golf club head of  claim 15  wherein the apertures have substantially rectangular cross sections.  
     
     
         18 . A golf club head that is adapted to be swung through an incoherent material to strike a golf ball, the golf club head comprising: 
 a body having a striking surface and a rear surface; and    the body having a plurality of apertures, wherein the apertures pass through the striking surface, the body, and the rear surface;    whereby the apertures reduce the resistance of the golf club head to motion through the incoherent material.    
     
     
         19 . The golf club head of  claim 18  wherein the apertures have a substantially rectangular shaped cross section in the plane of the striking surface; and 
 wherein the striking surface has a striking surface area and wherein a majority portion of the striking surface area is provided with the apertures.    
     
     
         20 . The golf club head of  claim 18  wherein the apertures have a substantially curved shaped cross section in the plane of the striking surface; and 
 wherein an aperture is disposed substantially parallel to another aperture.