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:
Aug. 01, 2000
Filed:
Jul. 20, 1999
Richard Knauer, Indianapolis, IN (US);
Brian Myers, Indianapolis, IN (US);
James Hall, Lincoln, RI (US);
Aearo Company, Southbridge, MA (US);
Abstract
Hearing protective devices having glow-in-the-dark properties are presented in the present invention. In an exemplary embodiment, the hearing protective device comprises a semi-aural device, an earplug, or an earmuff device. In all embodiments, a glow-in-the-dark material is incorporated into at least a part of the hearing protective device so that the glow-in-the-dark material continues to emit light for an extended period of time in a dark environment after the material has been excited by irradiation. Preferred and exemplary glow-in-the-dark materials comprise phosphorescent materials. The glow-in-the-dark materials may be disposed on a surface of the hearing protective part or dispersed throughout the material which forms this part.