PLUG ADAPTER Russian patent published in 2010 - IPC H01R31/06 H01R13/516 H01R13/639 

FIELD: electricity.

SUBSTANCE: adapter body comprises front section for plug, and also directly adjacent cylindrical section arranged as a whole with it with external thread to screw nut of cable input. Thread spreads in axial direction along part of section length. Nut has internal thread, which stretches in axial direction along part of nut length, and also bushing section, which stretches in axial direction beyond thread limits. Inner diametre of bushing section slightly exceeds external diametre of cylindrical section. Between internal diametre of bushing section and external diametre of cylindrical section there is a circular space open towards front part of plug and closed by engaged thread. Bushing section of movable bush or adapter bushing located between movable bushing and nut enters this gap.

EFFECT: higher extent of plugs protection against mechanical and chemical loads.

37 cl, 30 dwg