Pressure washer with diagnostic indicators

Details Pressure washer with diagnostic indicators Pressure washer with diagnostic indicators

2004-03-01

2011-12-13

Barr, Michael (Department: 1711)

Cleaning and liquid contact with solids

Apparatus

With alarm, signal, indicating, testing, inspecting,...

C134S0580DL

Reexamination Certificate

active

08074668

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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U.S. Patent & Trademark Office, International Search Report in International Patent Application No. PCT/US2005/006570 (Dec. 18, 2006).
EP Supplementary Search Report for EP Application No. EP 05724165 dated Jul. 15, 2011.

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