Patent ID: 7278663

Claim:
A cargo door lock for locking the rear doors of a container fitted with a pair of vertical rods used to secure the rear doors, said cargo door lock comprising: an extendable shaft, wherein said shaft has first and second opposite ends; a first rod securing hook and a second rod securing hook, wherein said first and second rod securing hooks are attached respectively to said first and second opposite ends of said extendable shaft, said first and second rod securing hooks are aligned in the horizontal plane; a lock mechanism attached to said extendable shaft, wherein said lock mechanism is set in a perpendicular plane with respect to said first and second hooks, said lock mechanism reversibly locks said extendable shaft at a predetermined length, said lock mechanism further comprising: an L-shaped bracket, said L-shaped bracket having first and second sidewalls and a base plate attached to one end of said first sidewall thereby defining a second L-bracket with respect to said first sidewall, said base plate comprising a tongue protruding from one end of said second sidewall; a lock, said lock having a lock hook, and a spring, wherein said spring has first and second opposite ends, wherein a gap is located between said base plate and said second sidewall, further wherein said lock hook fits through said gap, and wherein said spring sits inside said lock hook; and a lock housing, wherein said lock mechanism is located inside said lock housing.