公开(公告)号：US20210095798A1

公开(公告)日：2021-04-01

申请号：US16981872

申请日：2019-03-19

申请人： KUBOTA CORPORATION

发明人： Shozo KISHI ,  Kazuya ITO ,  Kazuma HARADA ,  Keita ODA ,  Ryunosuke TANAKA ,  Kohei IKEDA ,  Yuito KOMARU

IPC分类号： F16L21/04 ,  F16L21/08 ,  F16L21/03

摘要： A pipe joint in which a seal body and a spacer are mounted from the insides of pipes, wherein: a spigot of one pipe is inserted into a socket of the other pipe; and an annular accommodation space is formed between the inner circumference of the socket and the outer circumference of the spigot. Inside the accommodation space are accommodated: a seal body for sealing the gap between the socket and the spigot; a push ring that presses the seal body to keep the seal body in a compressed state; and a spacer that maintains the interval between the push ring and the deep end of the socket in the pipe axial direction.

公开(公告)号：US20180292033A1

公开(公告)日：2018-10-11

申请号：US15987246

申请日：2018-05-23

申请人： KUBOTA CORPORATION

发明人： Shozo KISHI ,  Takaaki KAGAWA ,  Keita ODA

IPC分类号： F16L21/03 ,  F16L21/08 ,  F16K3/30 ,  F16J15/02 ,  F16L37/084 ,  F16K27/00 ,  F16L23/032

摘要： A first projection is formed on the outer periphery of a bulb part, a second projection is formed on the socket rear end of the bulb part, a tapered part is formed with a decreasing diameter from the inner periphery of a heel part to the inner periphery of the second projection, and a third projection is formed on the tapered part. A first dimension B from the first projection to the third projection in an inclination direction opposite to an inclination direction G of the tapered part is smaller than a second dimension C from the first projection to the second projection in a radial direction A.

公开(公告)号：US20160290540A1

公开(公告)日：2016-10-06

申请号：US15028539

申请日：2014-09-29

申请人： KUBOTA CORPORATION

发明人： Shozo KISHI ,  Takaaki KAGAWA ,  Keita ODA ,  Yuito KOMARU

IPC分类号： F16L37/088 ,  E03F3/06 ,  F16L1/10 ,  F16L21/08 ,  F16L1/09

CPC分类号： F16L37/088 ,  E03F3/06 ,  F16J15/064 ,  F16L1/09 ,  F16L1/10 ,  F16L21/08 ,  F16L2201/10 ,  F16L2201/60 ,  G01N21/95

摘要： A pipe joint structure provided with: a heel section configured so that a spigot formed on the end section of a pipe is inserted via a seal member into a socket formed in the end section of another pipe and seal member is fitted to a recessed section formed on the inner circumferential section of the socket; and a valve section compressed between the inner circumferential surface of the socket and the outer circumferential surface of the spigot. Additionally, a marker member is provided to the heel section that is accommodated in the recessed section. The socket circumference section of the pipe joint structure is subjected to non-contact inspection by a marker detection device from the spigot-side pipe along the axial direction of the pipe and the quality of the joining state of the pipe joint structure is determined on the basis of whether the marker member is detected.

摘要翻译： 一种管接头结构，该管接头结构设置有：脚跟部，其构造成使得形成在管的端部上的插口经由密封构件插入到形成在另一管的端部中的插座中，并且密封构件被配合到形成的凹部 在插座的内圆周部分上; 以及压缩在所述插座的内周面与所述插口的外周面之间的阀部。 此外，标记构件设置在容纳在凹部中的跟部部分上。 管接头结构的套筒圆周部分通过标记检测装置从插管侧管沿着管的轴向进行非接触检查，并且管接头结构的接合状态的质量在 是否检测到标记物。