Composite golf club shaft
AssigneeAdvanced Retrofit Components Associated Leader (in) Golf, Inc.
InventorS. Floyd Mori
Life of this patent
Estimating the term…
Abstract
A golf club shaft has the usual handle portion at one end, a golf club head ounting portion at the opposite end, and a tapered intermediate portion therebetween. The tapered intermediate portion includes a substantially inflexible section adjacent the handle portion and a substantially flexible section adjacent the club head mounting portion. With this arrangement, rather than the entire shaft flexing in a substantially smooth curve during a normal swing of the club, the flexing is limited to the substantially flexible section of the club. This provides a club with increased control.
Claims14
A golf club shaft, said shaft having opposite ends and comprising:
- a handle portion at one end adapted to receive a hand grip;
- a club head mounting portion at the other end adapted to receive a club head;
- an intermediate portion extending between the handle portion and club head mounting portion, said intermediate portion having a flexible section adjacent the club head mounting portion that flexes during swing of the golf club and a substantially inflexible section adjacent the handle portion that resists flexing during swing of the golf club, said substantially inflexible section extending from the handle portion a distance of between about three inches to about five inches, and including reinforcing material along such section which increases the diameter of the shaft adjacent the handle portion so that the diameter of the shaft adjacent the handle portion is larger than the diameter of the handle portion.
A golf club shaft constructed of layers of fiber material in a resin, said shaft having opposite ends and comprising:
- a handle portion at one end adapted to receive a hand grip;
- a club head mounting portion at the other end adapted to receive a club head;
- an intermediate portion extending between the handle portion and club head mounting portion, said intermediate portion having a flexible section adjacent the club head mounting portion that flexes during swing of the golf club and a substantially inflexible section adjacent the handle portion that resists flexing during swing of the golf club, said substantially inflexible section extending from the handle portion a distance of between about three inches to about five inches, and wherein the substantially inflexible section includes sufficient additional layers of fiber material and resin beyond those which are present along the flexible section of the shaft to make such substantially inflexible section substantially inflexible.
A method of constructing a golf club shaft from layers of fiber material in a resin, said shaft having a handle portion at one end of the shaft, a club head mounting portion at the opposite end of the shaft, and an intermediate portion extending between the handle portion and club head mounting portion, comprising:
- forming a golf club shaft from fiber material in a resin;
- and
- adding additional layers of fiber material and resin to the outside of the intermediate portion of the shaft adjacent the handle portion and extending from the handle portion a distance of between about three inches to about five inches toward the club head mounting portion to create a thicker section of the shaft which resists flexing during normal swing of a golf club made with the shaft, the thicker section adjacent the handle portion having a diameter greater than the diameter of the handle portion.
A golf club shaft constructed of composite material including layers of fiber material in a resin, said shaft having opposite ends and comprising:
- a handle portion at one end adapted to receive a hand grip;
- a club head mounting portion at the other end adapted to receive a club head;
- an intermediate portion extending between the handle portion and club head mounting portion, said intermediate portion having a flexible section adjacent the club head mounting portion that flexes during swing of the golf club and a substantially inflexible section adjacent the handle portion that resists flexing during swing of the golf club, the substantially inflexible section joining the flexible section to provide a smooth change in shaft flexibility from the substantially inflexible section to the flexible section, said inflexible section including sufficient additional layers of fiber material and resin beyond those which are present along the flexible portion of the shaft to make such substantially inflexible section substantially inflexible.
Dependencies are inferred from the claim text.