US 11,692,344 B2
Fireproof coated structure for penetration part
Yukiko Chatani, Chiyoda-ku (JP); Mariko Seki, Chiyoda-ku (JP); Takahiro Hebiishi, Chiyoda-ku (JP); Eiichi Kuroda, Chiyoda-ku (JP); Wataru Ohuchi, Chiyoda-ku (JP); Takuji Yamashita, Chiyoda-ku (JP); and Kouji Yamakata, Chiyoda-ku (JP)
Assigned to Yoshino Gypsum Co., Ltd., Tokyo (JP)
Appl. No. 16/771,882
Filed by YOSHINO GYPSUM CO., LTD., Tokyo (JP)
PCT Filed Dec. 20, 2018, PCT No. PCT/JP2018/047034
§ 371(c)(1), (2) Date Jun. 11, 2020,
PCT Pub. No. WO2019/124505, PCT Pub. Date Jun. 27, 2019.
Claims priority of application No. 2017-245528 (JP), filed on Dec. 21, 2017.
Prior Publication US 2021/0071415 A1, Mar. 11, 2021
Int. Cl. E04B 1/94 (2006.01); E04B 2/70 (2006.01)
CPC E04B 1/948 (2013.01) [E04B 1/943 (2013.01); E04B 1/945 (2013.01); E04B 2/706 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A fireproof covered structure for a penetration part having a length through one of a fire prevention section forming member of a wooden building and a fireproof constructional member of the wooden building, to fireproof the penetration part, comprising:
a tubular fireproof material forming a continuous inner peripheral surface along substantially all of the length of the penetration part penetrating through the one of the fire prevention section forming member and the fireproof constructional member, the tubular fireproof material formed to have a tubular shape by stacking a plurality of gypsum board pieces in a thickness direction of the fire prevention section forming member and unitarily connecting the plurality of gypsum board pieces.