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:
Apr. 30, 2019
Filed:
Aug. 29, 2016
Chromalox, Inc., Pittsburgh, PA (US);
Adam Heiligenstein, Gibsonia, PA (US);
Chromalox, Inc., Pittsburgh, PA (US);
Abstract
An improved signal light unit for heat trace cables includes an energy storage device that stores energy during normal operation of the heat trace cable. During the normal operation, the light source of the signal light unit has a first illumination status. When there is a fault or other type of interruption in the electrical power in the heat trace cable, the energy storage device can discharge to power the light source. The light source can be illuminated in a different manner when it is powered by the energy storage device than during normal operation. Keeping the light energized in this manner when there is a fault in the heat trace cable and, moreover, making the light illuminate differently when there is a fault compared to normal operation, will facilitate inspection of the facility in which the heat trace cable is installed.