Apparatus for measuring dimensions of travelling objects

Details Apparatus for measuring dimensions of travelling objects Apparatus for measuring dimensions of travelling objects

1975-07-14

1976-12-14

Bauer, Edward S.

Optics: measuring and testing

Refraction testing

Prism engaging specimen

250223R, G01B 1104

Patent

active

039972704

ABSTRACT:
An apparatus for measuring a dimension of an object which is travelling through a measuring position comprising a conveying belt, a pair of plane mirrors each of which is arranged at each side of said conveying belt, a laser light source producing a laser light beam which is repeatedly reflected between said plane mirrors so as to form a light screen at said measuring position and a photoelectric converting device receiving the laser beam leaving said plane mirrors. The apparatus further comprises a pulse generator for producing a number of pulses a repetition rate of which is proportional to the movement of said object, a pulse counter for counting the number of said pulses for a time interval during which said object enters in said light screen and a device for calculating said dimension of the object on the basis of a count value of said pulse counter.

REFERENCES:
patent: 3041462 (1962-06-01), Ogle
patent: 3489910 (1970-01-01), Bohme
patent: 3774040 (1973-11-01), Stephanos
patent: 3797937 (1974-03-01), Shofner

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