US 12,227,984 B2
Panic device with door closer
Kyung Tae Kim, Daegu-si (KR)
Filed by YESUNG GLOBAL CO., LTD., Daegu-si (KR)
Filed on Dec. 22, 2022, as Appl. No. 18/086,929.
Claims priority of application No. 10-2022-0004198 (KR), filed on Jan. 11, 2022.
Prior Publication US 2023/0220714 A1, Jul. 13, 2023
Int. Cl. E05F 3/02 (2006.01); E05B 65/10 (2006.01); E05F 1/10 (2006.01)
CPC E05F 3/02 (2013.01) [E05B 65/1053 (2013.01); E05F 1/105 (2013.01); E05Y 2201/256 (2013.01); E05Y 2201/264 (2013.01); E05Y 2201/474 (2013.01); E05Y 2900/134 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A panic bar with a door closer, the panic bar having a locking device installed at a front end of a case and a door closer provided at a rear end of the case, wherein the locking device is released upon pushing of a push bar provided in the case,
wherein an air cylinder is installed inside the case;
wherein a guide member is installed in one side of the air cylinder and a cylinder sealing cap is installed in the other side of the air cylinder;
wherein one side of a piston rod having a piston for compressing and expanding air inside the air cylinder passes through the guide member;
wherein a spring disposed between the piston and the guide member is installed on the piston rod;
wherein a main link hinge-coupled to one side of the piston rod is installed in the guide member;
wherein a hinge assembly having a main hinge hinge-coupled to the main link is inserted into and installed at a vertical bar of a door frame of a door;
wherein an inflow check valve for allowing external air to flow in one direction into the air cylinder is installed at the cylinder sealing cap; and
wherein a pressure control valve for allowing air inside the air cylinder to flow to the outside when internal air pressure inside the air cylinder is at a predetermined pressure or higher is installed at the cylinder sealing cap.