US 12,146,357 B2
Fire protection securing device for securing a door actuator
Thomas Salutzki, Ennepetal (DE); Thomas Pabst, Ennepetal (DE); Alexander Hellwig, Ennepetal (DE); and Volker Bienek, Ennepetal (DE)
Assigned to DORMAKABA DEUTSCHLAND GMBH, Ennepetal (DE)
Appl. No. 18/016,761
Filed by dormakaba Deutschland GmbH, Ennepetal (DE)
PCT Filed Jul. 19, 2021, PCT No. PCT/EP2021/070147
§ 371(c)(1), (2) Date Jan. 18, 2023,
PCT Pub. No. WO2022/018026, PCT Pub. Date Jan. 27, 2022.
Claims priority of application No. 20186680 (EP), filed on Jul. 20, 2020.
Prior Publication US 2023/0287723 A1, Sep. 14, 2023
Int. Cl. E05F 1/00 (2006.01); E05F 3/22 (2006.01); E06B 5/16 (2006.01)
CPC E05F 1/006 (2013.01) [E05F 3/227 (2013.01); E06B 5/167 (2013.01); E05Y 2201/11 (2013.01); E05Y 2600/51 (2013.01); E05Y 2600/626 (2013.01); E05Y 2800/414 (2013.01); E05Y 2800/416 (2013.01); E05Y 2900/134 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A fire protection securing apparatus for securing a door actuator, the fire protection securing apparatus comprising:
a retaining plate configured for being secured to an assembly surface, wherein, perpendicular to the retaining plate, an assembly axis is defined,
an assembly plate which is secured to the retaining plate configured for receiving the door actuator,
a closed reaction chamber arranged between the retaining plate and the assembly plate, and
a drive element of thermally intumescent material, which is arranged in the closed reaction chamber and which is configured to push the assembly plate away from the retaining plate upon thermal activation, wherein the drive element comprises only the thermally intumescent material, and only the thermally intumescent material is arranged in the closed reaction chamber.