Shaft assemblies for golf clubs

Details Shaft assemblies for golf clubs Shaft assemblies for golf clubs

A - Human Necessities

63

B

273/160

A63B 53/00 (2006.01)

Patent

CA 1127196

ABSTRACT OF THE DISCLOSURE A problem in golf club manufacture is the very large number of different shafts required to make sets of clubs with different shaft flex characteristics. The invention teaches how it is possible to greatly reduce the number of different shafts used in a set by defining the shaft flex characteristics in terms of the EI value of the shaft. Recognising that the EI value at a section, that is, at a distance from a selected datum, controls the amount of deflection and hence flex characteristics the invention teaches how it is then possible to use a single master shaft throughout a set and by altering the distance from the datum, and hence altering the EI values a second and a third set and so on , having flex characteristics different from the first set can be produced from identical master shafts or shaft blanks.

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