The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 28, 1978
Filed:
Jan. 26, 1976
James H Heasley, Shaker Heights, OH (US);
Ferro Corporation, Cleveland, OH (US);
Abstract
A multi-sided retroreflective body is disclosed having at least two retroreflective faces adapted to intercept light. Each reflective face is tilted in the same general direction about a lower portion angularly away from a vertical plane and is angularly related in a horizontal plane with respect to another vertical plane disposed substantially at right angles to the direction of such light. All four angles are so interrelated as to make the faces substantially optically equivalent, such that light retroreflected by the faces is directed in return paths substantially parallel to that of the intercepted light. Preferably, the reflective faces have light-reflecting units formed from three mutually perpendicular surfaces. In this case, a related advantage results in that all of the faces of the retroreflective body may be formed with the same forming tool without affecting their optical equivalence.