Golf club shaft

A hollow golf club comprising a hollow shaft having a grip end and a club head secured to the hosel end thereof, said grip end and said hosel end each being a section comprising a pre-determined shape, and a plurality of at least three smoothly connected non-cylindrical sections therebetween shaped so as to provide a varying flexural and torsional stiffness, wherein each of said plurality of at least three smoothly connected non-cylindrical sections is shaped as a substantially frustoconical section, and having both small and large frustoconical section ends spaced from the grip and hosel ends, and including an intermediate diverging section.

A golf club shaft having a grip end and a hosel end and formed of a composite material, characterized by a plurality of substantially frustoconical sections formed between the grip end and the hosel end, wherein each frustoconical section has its own predetermined substantially constant wall thickness.

A hollow golf club shaft having a grip end, a hosel end, and a club head secured to the hosel end thereof, characterized by the hollow shaft including a plurality of diverging and converging substantially frustoconical sections including at least one of the grip and hosel end, with both small and large frustoconical section ends spaced from the grip and hosel ends, and including at least one intermediate diverging frustoconical section, and each section having its own predetermined substantially constant wall thickness.

A hollow golf club shaft having a grip end, a hosel end, and a club head secured to the hosel end thereof, characterized by the hollow shaft including a plurality of diverging and converging substantially frustoconical sections between the grip and hosel ends, and each section having its own predetermined substantially constant wall thickness, wherein said plurality of substantially frustoconical sections is three, wherein said substantially frustoconical sections include a first converging frustoconical section extending from said grip end section, a diverging frustoconical section extending from said first converging frustoconical section, a second converging frustoconical section extending from said diverging frustoconical section to said hosel end section.