Golf club head with channel and stabilizing structure

Abstract

The invention generally relates to a golf club with a channel area. The channel area includes a groove disposed alongside a ramp having a shallow slope with respect to the horizontal when the club head is at address. The channel area may extend across a portion of the club head such as the crown or the sole. The ramp is oriented such that, during a high speed drive, the ramped portion of the sole may distribute and neutralize torsional stresses, dampening unwanted and unpredictable twisting, preventing the ball from flying in unpredictable directions while the deeper groove contributes to a high coefficient of restitution of a ball-striking face, a large sweet spot area, or both, thus causing the ball to fly a long distance.

1 - 20 . (canceled) 
     
     
         21 . A hollow driver-type golf club head comprising:
 a crown, sole, heel portion, toe portion, and face cooperating to define a club head body;   a hosel extending upwards from the body; and   a channel extending along an outer surface of the sole from the heel portion towards the toe portion, the channel comprising:
 a ramp with a surface that is sloped with respect to the horizontal when the club head is at address, and 
 a groove disposed alongside the ramp, the groove comprising a fore facing inward wall and an aft-facing inward wall, wherein the aft-facing inward wall is sloped more steeply than the surface of the ramp with respect to the horizontal when the club head is at address. 
   
     
     
         22 . The golf club of  claim 21 , wherein the surface of the ramp is sloped at an angle between 5° and 20° and the aft-facing inward wall is sloped at an angle between 20° and 80° , with respect to the horizontal when the club head is at address. 
     
     
         23 . The golf club of  claim 21 , wherein the surface of the ramp is sloped at an angle between 10° and 20° and the aft-facing inward wall is sloped at an angle between 30° and 60° , with respect to the horizontal when the club head is at address. 
     
     
         24 . The golf club of  claim 23 , wherein a heel-toe length of the channel is between about 5 cm and about 15 cm and a face-aft width of the channel is between about 0.2 cm and about 3 cm. 
     
     
         25 . The golf club of  claim 24 , wherein a face-aft width of the ramp is between about 0.1 cm and about 1.5 cm. 
     
     
         26 . A hollow driver-type club head golf club head comprising:
 a crown, sole, heel portion, toe portion, and face cooperating to define a club head body;   a hosel extending upwards from the body; and   a channel extending across the sole in a heel-toe direction, wherein a cross-sectional profile of the channel, when the club head is at address, comprises:
 a gently inclined portion forming a first angle less than 20° with the horizontal, 
 a first wall defining a steeply inclined portion and forming a second angle greater than 20° with the horizontal, and 
   a second wall facing the first wall to define a groove adjacent the gently inclined portion.   
     
     
         27 . The club head of  claim 26 , wherein the channel is substantially parallel to the face and spaced away from the face by at least a setback distance over a majority of a length of the channel, wherein the setback distance is between about 1 cm and about 5 cm. 
     
     
         28 . The club head of  claim 27 , wherein the channel comprises a depth, with respect to a predominant surface of the sole, between about 5 mm and about 10 mm. 
     
     
         29 . A hollow driver-type golf club head comprising:
 a crown, sole, heel portion, toe portion, and face cooperating to define a club head body;   a hosel extending upwards from the body; and   a channel extending across the sole in a heel-toe direction wherein, when the club head is at address, a cross-sectional profile of the channel comprises:   a gently inclined portion forming a first angle with the horizontal,   a steeply inclined portion forming a second angle with the horizontal, and   a second steeply inclined portion opposed to the steeply inclined portion to define a groove within the channel.   
     
     
         30 . The club head of  claim 29 , wherein the first angle is between 5° and 20° and the second angle is between 20° and 80°. 
     
     
         31 . The club head of  claim 29 , wherein the club head is a hollow driver-type club head. 
     
     
         32 . The club head of  claim 31 , wherein the channel is substantially parallel to the face and spaced away from the face by at least a setback distance over a majority of a length of the channel, wherein the setback distance is between about 1 cm and about 5 cm. 
     
     
         33 . The club head of  claim 29 , wherein the gently inclined portion is disposed between the face and the groove.