Kingpin lock

A trailer kingpin locking device comprising:

• a kingpin housing for selectively engaging and covering a standard trailer kingpin to prevent unauthorized engagement of the trailer kingpin, said kingpin housing including a hole to fit over a standard trailer kingpin;
• securing means slidably secured to said kingpin housing said securing means protruding into said hole in said kingpin housing to selectively engage the annular groove of a standard kingpin;
• locking means which cooperate with said kingpin housing to engage said securing means to prevent unauthorized removal of said kingpin housing from a kingpin when locked;
• said securing means comprising an elongated member having a concave edge configuration at one end thereof which the annular groove of a standard kingpin and a transverse slot near the opposite end of said elongated member, said locking means comprising a heavy-duty key type padlock having a body portion and a shackle portion, said body portion being received in said slot and said shackle portion extending around a portion of said elongated member when said padlock is locked, said padlock being fully enclosed, except for key access, within said kingpin housing when locked;
• and retaining means for preventing inadvertent removal of said elongated member from said kingpin housing when said padlock is unlocked.