Door for a coke oven furnace

Claim 1

A coke oven door construction for closing an opening in a coke oven furnace comprising a vertically elongated brick supporter for carrying a brick block in the coke oven furnace opening which is exposed to high temperature within the coke oven furnace, a door body spaced from the brick supporter and connected thereto for carrying the brick supporter in the coke oven furnace opening, said brick supporter being subject to vertical thermal expansion of varying degree along its vertical length due to the high temperature in the coke oven furnace with higher expansion at an upper portion than at a lower portion of said brick supporter, at least one connecting pin rigidly connected between said brick supporter and said door body at one vertical location on said door body, a plurality of spaced sliding mechanisms connected between said brick supporter and said door body for providing a sliding engagement between said brick supporter and said door body, whereby vertical thermal expansion of said brick supporter is not transmitted to said door body so that said brick supporter and door body are not warped and distorted, said at least one connecting pin being connected at a vertical position above the central vertical position of said door body and brick supporter so that the thermal expansion of an upper portion of said brick supporter above said at least one connecting pin is equal to the thermal expansion of the lower portion of said brick supporter below said connecting pin, a sealing plate connected around the periphery of said brick supporter, and a knife edge connected around the periphery of said sealing plate bearing against a periphery of the coke oven furnace opening to maintain a seal between said brick supporter and the coke oven furnace opening.