Title:
FIRE DOOR
Document Type and Number:
Japanese Patent JP2021147902
Kind Code:
A
Abstract:
To provide a fire door which extends time required until a drive unit is fired in case of fire.SOLUTION: A fire door 1 according to the present invention has a drive unit 30 for opening and closing a first sliding door 20A and a second sliding door 20B, a case 40 having a lower surface opening part 40B housing the drive unit 30 and formed at a lower portion of the case, and a first foamed material 51, a second foamed material 52, a fourth foamed material 54 and a fifth foamed material 55 provided at portions inside the case 40 other than the lower surface opening portion 40B and foamed by heat.SELECTED DRAWING: Figure 2
Inventors:
NAGATSU SHINJI
SHIKOKU YASUNORI
SHIKOKU YASUNORI
Application Number:
JP2020049856A
Publication Date:
September 27, 2021
Filing Date:
March 19, 2020
Export Citation:
Assignee:
NABTESCO CORP
International Classes:
E06B5/16; A62C2/06; E05F15/643
Attorney, Agent or Firm:
Makoto Onda
Hironobu Onda
Hironobu Onda