Voltage indicator test mechanism
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United States of America Patent
Stats
-
Sep 6, 2011
Grant Date -
Jun 14, 2007
app pub date -
Dec 7, 2006
filing date -
Dec 8, 2005
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
, 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.
First Claim
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International Classification(s)
Cited Art Landscape
Patent Citation Ranking
- 10 Citation Count
- G01R Class
- 3.90 % this patent is cited more than
- 14 Age
