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:
Sep. 06, 2011
Filed:
Dec. 07, 2006
Philip Brown Allen, Jr., Bettendorf, IA (US);
Philip Brown Allen, Jr., Bettendorf, IA (US);
Grace Engineered Products, Inc., Davenport, IA (US);
Abstract
An electrical safety monitor includes line inputs for an L, an L, an L, and a GND three-phase connections, a line monitoring circuit having a plurality of light indicators and configured to produce light if voltage exists between any two of the line inputs to thereby indicate presence of voltage to a user, and a current generating circuit electrically connected to the line monitoring circuit and adapted to generate a test current to the line inputs to transition the device from dead to live thereby allowing the user to discern between a failure state of the line monitoring circuit and an off state of the line monitoring circuit. The current inducing circuit can include a magnet which induces the test current, stored energy, a photocell, an electroactive material or other means for generating the test current.