Patent ID: 8439685

Claim:
A fire training door assembly, comprising: a door frame including first and second vertical posts and an upper horizontal beam connecting said first and second vertical posts; a door having a front, a rear, a first lateral side hingably connected to said first vertical post and a second lateral side, said door defining a cutout space along said second lateral side, said cutout space having an upper end, a lower end, and a side portion, said cutout having an open side at one of the front and rear of said door; a lock element movably arranged in said cutout space and extending between said upper end and said lower end; a cover nondestructively removably connected to said door to cover at least a portion of said open side such that said lock element is maintained in said cutout space, wherein said lock element is removable from said open side when said cover is removed from said door; and a spring arranged between said lock element and said side portion urging said lock element toward said second side of said door against a stop element arranged on said door, said lock element being movable against an urgency of said spring toward said first lateral side, whereby the forces required to move the lock element against the spring simulate the forces required to pry open a steel door; wherein said spring is a leaf spring comprising a central section and two end sections, said central section being connected to one of said lock element and said side portion of said space, and said end section resting resilienty against the other of said lock element and said side portion of said space.