Method and apparatus for locating the dynamic axis of a sphere

Details Method and apparatus for locating the dynamic axis of a sphere Method and apparatus for locating the dynamic axis of a sphere

1984-01-09

1985-10-15

Ruehl, Charles A.

Measuring and testing

Center of gravity; turning moment; metacentric height

73461, 273213, G01M 126

Patent

active

045466440

ABSTRACT:
The dynamic axis of a sphere, e.g. golf ball, is located by spinning the sphere at high speed while it is supported on a low friction-bearing surface, thus allowing the desired stable axis to align itself with the spin axis. Markings indicative of the location of the stable axis are applied to the sphere. The spinning operation also indicates the degree of existing eccentricities in the sphere.

REFERENCES:
patent: 2946224 (1960-07-01), Yamaguchi
patent: 4111038 (1978-09-01), Olson et al.
patent: 4233846 (1980-11-01), Taylor

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