US Patent 10240351 Elevator trench drain

A trench drain includes a trench and a grating hingedly connected to the trench. The trench has a base wall with peripheral side walls extending upwardly therefrom and the trench defines a trench volume therein. The peripheral side walls of the trench have a pair of opposing elongated slots formed therein and the grating has a pair of posts on opposing ends thereof. Each of the pair of posts on the grating are received in a respective one of the pair of opposing elongated slots of the trench.