Patent ID: 7192363
Filing Date: 2007-03-20
Classification: A63B

Abstract:
1. A golf club head comprising: a body having a front surface, a back surface, a heel end, a toe end, a sole extending between lower portions of the heel and toe ends, a top rail extending between upper portions of the heel and toe ends; a face elastically coupled to the front surface of the body; a piston assembly for adjusting shock absorption on the face; wherein piston assembly comprises: a cylindrical vessel having first and second ends, the second end having an opening; a piston disposed within the cylindrical vessel; a piston rod coupled to the piston; a seal coupled to the second end; and a rheological fluid disposed in the cylindrical vessel, the theological fluid being contained within the cylindrical vessel by the seal which cooperates wit the second end of the cylindrical vessel and the piston rod.