Forming markings on a vial surface

Details Forming markings on a vial surface Forming markings on a vial surface

1989-05-18

1990-06-05

Schmidt, Frederick R.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

5116577, 235487, B24B 4900

Patent

active

049302639

ABSTRACT:
Glass laboratory vials are marked by grinding the surface of the vial with an abrasive wheel. The vial is moved relative to the wheel under control of a computer so as to automatically grind a desired bar code or alpha-numeric symbols into the surface. The ground portion of the surface of the vial scatters light while the unground portion of the surface transmits light.
The process is automated and can be performed by a robot as part of an analyzing or processing system. The ground-in markings are more enduring than the prior art paper labels.

REFERENCES:
patent: 3229126 (1966-10-01), Barron
patent: 4291507 (1981-09-01), Littlehorn, Jr.
patent: 4327283 (1982-04-01), Heyman et al.

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