DOUBLE-PIN PLUG WITH GROUND RESISTOR Russian patent published in 2005 - IPC

FIELD: domestic appliances.

SUBSTANCE: proposed plug primarily designed for computers having three-conductor cord of which one is ground conductor, and also for connecting and grounding domestic appliances in apartments provided with standard two-contact receptacles and having no European-type ground-contact ones is, essentially, standard plug with two thin pins whose shroud accommodates resistor; one of resistor leads is connected to plug pin meant for further connection to one of receptacle jacks connected to neutral wire of supply mains. Other resistor lead is used for connecting ground conductor of three-conductor cord of electrical appliance; it has miniature neon lamp one of whose leads is connected to metal contact installed on plug shroud and other lead, to resistor lead used for connecting ground conductor of electrical appliance cord; resistor is dual-function device used to connect electrical appliance to ground and to limit current through neon lamp; plug shroud has peephole to check lamp for glow upon touching metal contact with finger.

EFFECT: improved performance characteristics, enlarged functional capabilities.

1 cl, 1 dwg