Rotation speed measuring machine for flying globe

Details Rotation speed measuring machine for flying globe Rotation speed measuring machine for flying globe

1996-06-18

1998-08-25

Rosenberger, Richard A.

Optics: measuring and testing

Miscellaneous

473199, A63B 5700

Patent

active

057988331

ABSTRACT:
A rotation speed measuring machine for a flying globe is formed of a light projecting device 10 projecting light on a measurement conducting area A which is a space including an expected flying route of a flying globe B after the globe has been hit at a hitting position, a light receiving device 20 which receives reflection light from the flying globe flying in the measurement conducting area A and which outputs a signal according to the fluctuation of the amount of reflected light, and a rotational speed detecting means 30 detecting the rotational speed of the flying globe B based on the output signal from the light receiving device 20 in order to measure the rotational speed of the flying globe B by putting a mark M having a light reflectance rate different from the reflectance rate of the surface texture on a part of the surface of the flying globe B and by detecting the amount of reflected light from the mark. The amount of spin of the flying globe B is measured at around the highest point of the flight locus.

REFERENCES:
patent: 3630601 (1971-12-01), Lehovec
patent: 5471383 (1995-11-01), Gobush et al.
patent: 5481355 (1996-01-01), Iijima et al.

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