US Patent 10036514 Troffer light fixture retrofit systems and methods

A retrofitting kit for retrofitting an existing troffer light fixture having a troffer housing includes an adaptor bracket and a door assembly. The adaptor bracket includes a channel configured to rest on a T-bar of a ceiling system, and further configured to be located between the T-bar and the troffer housing, a slot, and a latch surface. The channel defines an open slot configured to receive and retain a portion of the troffer housing thereby facilitating a retrofit installation. The door assembly includes a latch configured to engage the latch surface of the adaptor bracket, a hinge configured to interface with the slot of the adaptor bracket, a housing including the latch and the hinge, and a light source coupled to the housing.