Patents Assigned to Apollo Sports Holdings Ltd.
  • Patent number: 5944616
    Abstract: A tubular metal blank for the production of golf club shafts for iron clubs, the blank being at least 44" in length, having a cylindrical tip portion, a cylindrical butt portion, and an intermediate, integral, tapering portion, remaining parameters of the blank including the material, the taper angle, the length of the intermediate portion, and the wall thickness being so chosen as to produce a blank of a stiffness characteristic such that by appropriate trimming of the butt and tip portions of the blank, the blank can be used to produce a shaft for any golf club from a 1 iron to a sand wedge in any of the recognized flex ranges Tour Stiff, S, R and A. There is also disclosed a method of producing a golf club shaft and a means of determining how much to cut from the blank to produce a shaft.
    Type: Grant
    Filed: January 14, 1998
    Date of Patent: August 31, 1999
    Assignee: Apollo Sports Holdings Ltd.
    Inventors: Graeme Horwood, John Hutchcocks