Abstract: The theft proof lid according to the invention provides a lockable lid for a container, in particular, a standard 200-300 gallon grease bin used by most rendering and bio-fuel companies. The theft proof lid keeps thieves from stealing the bin contents. The lid is permanently installed onto the bin. A dual locking feature of the lid allows for easy pumping or dumping of the bin. First, locking pins for locking and unlocking the front corners of the lid are provided. A front half of the lid is foldable relative to a rear half of the lid, so that the front half may be unlocked and opened for pumping out the contents of the bin. A center locking bar is provided to lock the rear half of the lid from being opened. The locking bar is removed when the bin is to be lifted and dumped, allowing the lid to swing open on a back lid hinge, particularly when the lid is in a folded position.

Abstract: The theft proof lid according to the invention provides a lockable lid for a container, in particular, a standard 200-300 gallon grease bin used by most rendering and bio-fuel companies. The theft proof lid keeps thieves from stealing the bin contents. The lid is permanently installed onto the bin. A dual locking feature of the lid allows for easy pumping or dumping of the bin. First, locking pins for locking and unlocking the front corners of the lid are provided. A front half of the lid is foldable relative to a rear half of the lid, so that the front half may be unlocked and opened for pumping out the contents of the bin. A center locking bar is provided to lock the rear half of the lid from being opened. The locking bar is removed when the bin is to be lifted and dumped, allowing the lid to swing open on a back lid hinge, particularly when the lid is in a folded position.