Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
December 13, 2011
Patent Application Number
10790527
Date Filed
March 1, 2004
Patent Citations Received
Patent Primary Examiner
Patent abstract
An electrical pressure washer includes a diagnostic circuit for detecting operation conditions that may affect the normal operation of the pressure washer, and a plurality of indicators indicating the detected operation conditions, such as ground fault, low pressure, overheating, etc. A voltage drop across the power cord of the pressure washer is monitored and used to identify several of the operating conditions. A way of connecting and controlling light-emitting diodes used as indicator lights is provided to allow energy-efficient operation of the indicator lights.
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