SYSTEM FOR PREVENTING ELECTROSTATIC SPARK DISCHARGE FROM A PERSON OPERATING AN ELECTRICAL APPLIANCE

摘要

In accordance with the present invention, there is provided on the handle of a vacuum cleaner nozzle, or other electrical appliance, a member of conducting material so located as to be apt to be contacted at all times during use by the hand of the operator. This member is connected to both conductors of the 120 volt circuit of the appliance through a high loss dielectric material having resistivity high enough to prevent any significant current flow at 120 volts, either between the conductors or from either conductor to the person; but low enough to permit current flow at the high voltages of a static charge from the person to the conductors and at a rate sufficiently high to drain off the charge before the voltage reaches a high enough value to produce a spark discharge, but not at a rate sufficiently high to drain off an already accumulated high static charge rapidly enough to produce a spark discharge.