US 12,005,280 B2
Fire door system for conveyor
Kevin Walker, Johnston, IA (US)
Assigned to FORTYFIVE FABRICATION, LLC, Johnston, IA (US)
Filed by FORTYFIVE FABRICATION, LLC, Johnston, IA (US)
Filed on Jul. 6, 2022, as Appl. No. 17/858,306.
Claims priority of provisional application 63/222,208, filed on Jul. 15, 2021.
Prior Publication US 2023/0022879 A1, Jan. 26, 2023
Int. Cl. A62C 2/22 (2006.01); A62C 2/20 (2006.01); A62C 2/24 (2006.01); E05F 15/72 (2015.01); B65G 15/00 (2006.01)
CPC A62C 2/20 (2013.01) [A62C 2/24 (2013.01); A62C 2/242 (2013.01); A62C 2/247 (2013.01); E05F 15/72 (2015.01); B65G 15/00 (2013.01); E05Y 2400/44 (2013.01); E05Y 2400/52 (2013.01); E05Y 2800/414 (2013.01); E05Y 2900/134 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system, comprising:
a conveyor;
the conveyor having a set of rollers;
the conveyor having a belt;
wherein the belt is positioned on the set of rollers and forms a continuous loop having an upper portion of the belt and a lower portion of the belt;
wherein the conveyor extends through a first opening in a fire wall;
wherein the belt partitions the first opening into an upper opening positioned above the upper portion of the belt, a middle opening positioned between the upper portion of the belt and the lower portion of the belt, and a lower opening positioned below the lower portion of the belt;
a fire door system;
wherein the fire door system includes a door assembly;
wherein the fire door system includes a door frame assembly;
wherein the door frame assembly is connected to the fire wall, covers a lower opening, covers the middle opening, and forms a frame for the door assembly having a door opening within the upper opening of the fire wall;
wherein the door assembly is configured to move between a closed position and an open position;
wherein in the closed position the door assembly covers the door opening;
wherein in the open position the door assembly at least partially uncovers the door opening; and
wherein the fire door system includes an actuator configured to cause the door to be moved from the open position to the closed position in response to occurrence of fire.