Portable apparatus for measuring the flexibility of a golf...

Details Portable apparatus for measuring the flexibility of a golf... Portable apparatus for measuring the flexibility of a golf...

2005-01-04

2005-01-04

Noori, Max (Department: 2855)

Measuring and testing

Testing by impact or shock

Resilient ball

Reexamination Certificate

active

06837094

ABSTRACT:
The apparatus employs a steel impact ball which is mounted in a pendulum manner to swing against the face of a golf club head. The golf club is secured at one end to a spacer block on the base of the apparatus and the head of the club is freely mounted in facing relation to the impact ball. The ball is pivoted from a fixed position to impact against the head of the golf club and an oscilloscope is used to record et acceleration and movement of the ball after impact of the ball on the club face and also calculates a velocity history of the face of the ball. The time at which the calculated velocity is at a maximum is determined. Several impacts may be made to obtain a number of calculated times and the relative flexibility of the golf dub head is estimated in accordance with the equation:B=ic-A⁢1VmkA simpler procedure may also be employed using a single velocity (with one or more than one impact). In this instance, the relative flexibility of the golf dub head is estimate in accordance with the equation:in-line-formulae description="In-line Formulae" end="lead"?B=tc.in-line-formulae description="In-line Formulae" end="tail"?

REFERENCES:
patent: 5951410 (1999-09-01), Butler et al.
patent: 6000286 (1999-12-01), Naruo et al.
patent: 6505498 (2003-01-01), Pringle
patent: 6702692 (2004-03-01), Smith

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