Bowling pin sensor

Details Bowling pin sensor Bowling pin sensor

A - Human Necessities

63

D

273/107, 340/136

A63D 5/04 (2006.01)

Patent

CA 1288448

BOWLING PIN SENSOR Inventors: Werner F. W. Schwiering Thomas G. England ABSTRACT OF THE DISCLOSURE A sensor for use in a lane of a bowling centre to detect the relative position of a bowling pin, comprising a light responsive electrical device with a superimposed light conductive protector, the light conductive protective means having a refractive index and a length/diameter ratio whereby light entering therein will reach the light responsive electrical means only below a predetermined angle of incidence.

519147

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