Exel Oy

Pekka Tiikkainen

Taisto Manninen

Pauli Jaatinen

Matti Suominen

Jukka Paasivaara

A shaft for an indoor bandy stick, comprising a hollow tube. The tube has a substantially circular bottom end which turns elliptical when progressing upwards while the tube expands conically. The ellipse has a major axis (a) which at its maximum is at least about 15%, preferably about 30% longer than its minor axis and the conicity is such that the diameter of the ellipse parallel to the major axis (a) increases at least about 30%, preferably about 50% or more and the diameter parallel to the minor axis (b) increases 0-30%.

Shaft for a floor ball/indoor bandy stick

The invention relates to a method for measuring the deflection in a golf club shaft (3) for controlling the dynamic loft angle of a shaft. The method comprises the steps of fixedly clamping a shaft (3) at a certain distance from a club head (5), setting club head (5) in vibration, and measuring the vibration frequency while shaft (3) is clamped at the clamping distance. This is followed by releasing the shaft (3) from clamping and by repeating the above actions at varying distances from the club head (5) and by using the thus obtained measuring results for setting up a frequency profile for shaft (3).

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Mantyharju, Finland

Pekka Tiikkainen