X-ray identification tag

• US 4,035,653 A
• Filed: 04/09/1976
• Issued: 07/12/1977
• Est. Priority Date: 01/08/1974
• Status: Expired due to Term

• Current Assignee: Robert Karasko
• Original Assignee: Robert Karasko
• Inventors: Karasko, Robert
• Primary Examiner(s): Church, Craig E.
• Application Number:
  US05/675,427
• Time in Patent Office: 459 Days
• Field of Search: 250/476, 250/475
• US Class Current: 378/165
• CPC Class Codes: G09F 3/0291 Labels or tickets undergoing a change under particular conditions, e.g. heat, radiation, passage of time

Abstract

An identification tag adapted to be employed in making X-ray pictures is provided with a plastic base having reinforcing means which are relatively transparent to X-rays embedded therein and defining an opening through which X-rays freely pass. One or more symbols such as letters, numbers or the like formed of material which is substantially opaque to X-rays are positioned in the opening in the reinforcing material and embedded in the plastic body of the tag.

Claims

1. An X-ray identification tag comprising a plastic body having reinforcing means which is relatively transparent to X-rays embedded therein, said reinforcing means defining an opening through which X-rays may pass, X-ray opaque material positioned within said opening and secured to said plastic body to define passages therethrough being relatively transparent to X-rays to define any pre-chosen symbol, said passage including a minimum width point intermediate between the upper and lower surfaces of said opaque material, said passage being tapered to widen in both the upward and downward directions from said minimum width point to form symbols when used with non-vertical X-rays.

2. An X-ray identification tag as defined in claim 1 wherein the taper of said passage is at least equal to the expected inclination of the incoming X-ray.