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:
Oct. 05, 2004
Filed:
Dec. 13, 2002
Alfred S. Braunberger, Thousand Oaks, CA (US);
Vision Works, LLC, Thousand Oaks, CA (US);
Abstract
A timing device for visually indicating the passage of a duration of time is disclosed. The timing device comprises a lens, a base and an optical medium therebetween. The optical medium preferably comprises one or more materials, layers or components that chemically or electrochemically change the duration of time. The timing device preferably comprises an opaque layer positioned between the lens and the base, wherein the opaque layer is dissolved over the duration of time, thereby making the base visible through the lens. The timing device is preferably fabricated in parts with reactive regions which are configured to couple together to form an activated device. In further embodiments of the invention, the device comprises means to generate an audible signal when the duration of time has passed and/or thermosensor for actuating the device within a range of temperatures.