Nut locking apparatus

A locking assembly for preventing access to a nut secured onto a bolt, the locking assembly comprising:

• a cylindrical housing having a first end and a second end;
• a bore in said housing in communication with said first end and said second end, said bore defining a bolt bore at said first end, a counterbore at said second end, and a cavity between said first and second ends, said bolt bore adapted to receive a shank of the bolt therethrough, and having a diameter less than a diameter of the nut to prevent the nut from passing therethrough, said counterbore defining a seating surface and said cavity adapted to receive the nut and allow tightening of the nut onto the shank of the bolt;
• an annular slot disposed between said seating surface and said cavity;
• a stop disposed in said annular slot;
• a locking lever disposed in said annular slot and rotationally limited by said stop, said locking lever having a threaded bore;
• a cap having a bore therethrough and a boss on one end thereof, said boss adapted to be received in said counterbore and engage said seating surface;
• and
• a threaded stud having a keyed lug on one end, said threaded stud adapted to extend through said cap bore and be threadedly received in said locking lever threaded bore.

A lock assembly for preventing access to a nut threadably secured onto a bolt, the locking assembly comprising:

• a cylindrical body having a first end and a second end;
• a chamber within said body, said chamber sized to receive the nut and allow tightening of the nut onto the bolt;
• a bolt aperture in said first end, said bolt aperture in communication with said chamber and having a maximum diameter less than a smallest diameter of the nut;
• a counterbore in said second end, said counterbore in communication with said chamber and defining a seating surface;
• a radial groove disposed on an inside surface of said body between said counterbore and said chamber;
• a plate disposed in said groove and having a threaded bore;
• a cap having a bore therethrough and a boss on one end, said boss adapted to be received in said counterbore;
• and
• a lug having a threaded stud on a first end and adapted to be received through said cap bore, said threaded stud adapted to be received in said threaded bore of said plate, whereby rotation of said lug causes said threaded stud to axially displace towards said first end through said threaded bore of said plate to axially displace said cap towards said first end to abuttingly secure said cap onto said body while still freely rotatable relative to said body to seal said chamber.