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公开(公告)号：US20230091354A1
公开(公告)日：2023-03-23
申请号：US17769372
申请日：2020-10-05
申请人： KUBOTA CORPORATION
发明人： Shozo KISHI , Keita ODA , Ryunosuke TANAKA
摘要： In a pipe joint, a spigot is inserted into a socket; a lock ring is accommodated in a lock ring-accommodating groove formed in the inner circumference of the socket; and an engaging part formed in the outer circumference of the spigot, wherein the engaging part engages with the lock ring from a back side of the socket in a separation direction A of the spigot, thereby preventing the spigot from separating from the socket. The engaging part is formed at a position receding from a distal end of the spigot in the separation direction A of the spigot. A bending suppressing member for restricting the socket and the spigot in a bending direction C is provided between the inner circumference of the socket and the outer circumference of the spigot in the range between the distal end of the spigot and the engaging part.
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公开(公告)号：US11560972B2
公开(公告)日：2023-01-24
申请号：US16109641
申请日：2018-08-22
摘要： Pipe connectors and methods of making and using pipe connectors to connect oil or gas pipe in oil and gas production, refining and distribution.
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公开(公告)号：US20220356971A1
公开(公告)日：2022-11-10
申请号：US17621619
申请日：2020-06-22
发明人： Akio YASUDA
摘要： [Problem] To provide a pipe joint allowing reliable connection to a pipe P without flaring.
[Means of solving problem] The pipe joint includes a flare joint body 1F, a cap nut 2, and a stop ring 3. A curved pressure-contacting slope surface 32 of the stop ring 3 contacts a slope surface 5 with reduced-diameter tip of the flare joint body 1F under pressure to establish sealing by means of mutual contact between metallic surfaces. The pipe P is grasped in a tightly pressure-contacting state using a back tooth and a front tooth formed at a tip head 37 of a substantially cylindrical thin part 35 of the stop ring 3.-
公开(公告)号：US11493158B2
公开(公告)日：2022-11-08
申请号：US16882920
申请日：2020-05-26
IPC分类号： F16L21/02 , F16L21/00 , F16L19/075 , F16L21/04 , F16L37/14 , F16J15/02 , F16L21/035 , F16L21/08
摘要： An apparatus for connecting two pipes in fluid communication includes a connector body having opposing open ends, with each open end configured for receiving a free end of a pipe, and a mechanical interlock arrangement for preventing or limiting axial movement of the connector body relative to a free end of a pipe when the free end of the pipe is received in an open end of the connector body. A mechanical seal arrangement provides a metal-to-metal seal between a pipe inserted into one of the open ends and the connector body.
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公开(公告)号：US11473704B2
公开(公告)日：2022-10-18
申请号：US17619155
申请日：2020-10-30
发明人： Hidehito Kawanishi
IPC分类号： F16L27/12 , F16L21/08 , F16L21/04 , F16L19/065
摘要： Provided is a pipe detachment preventing device, for a union nut pipe fitting, which can omit an inner core and which can prevent detachment of a pipe from a pipe fitting even when a large pulling force which stretches the pipe acts. Connection holding means (7) includes an inclination mechanism (8) configured to incline a retaining ring (4A) in a pipe axis direction (X) with respect to a reference plane (P) orthogonal to a central axis (C) of a retaining ring body (40), such that one of a circumferential center portion (40y) and a circumferential end portion (40x) of a retaining ring body (40A) is caused to be closer to a fitting body (2) and the other is moved away from the fitting body (2), when first protruding portions (41) and first facing portions (55) come into contact with each other and a pipe pulling force which stretches a joint pipe (100) is applied to the joint pipe (100).
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公开(公告)号：US11435015B2
公开(公告)日：2022-09-06
申请号：US16854384
申请日：2020-04-21
摘要： A method of coupling a pipe length to a piping element includes sliding a gland over an end of the pipe length, the gland including a joint restraint assembly, the pipe length defining an outer pipe surface; inserting the end of the pipe length into a socket defined by the piping element; fastening the gland to the piping element; and activating the joint restraint assembly to prevent removal of the pipe length from the socket by rotating a gripper in an engagement direction of the joint restraint assembly; and engaging the gripper with the outer pipe surface in an initial engagement position.
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公开(公告)号：US11318515B1
公开(公告)日：2022-05-03
申请号：US17170037
申请日：2021-02-08
申请人： SIGMA CORPORATION
摘要： An apparatus and method for re-rounding a distorted end (e.g., oval-shaped) of a pipe for insertion into a mechanical joint fitting or pipe bell have a circular diameter. The apparatus involves two separate semi-circular members having jack bolt assemblies evenly distributed in each. The two ends of each of the semi-circular members have extensions that can be releasably coupled to join to the two members to form a circular re-rounding tool. A first semi-circular member is positioned on the maximum diameter side of the distorted pipe and the other semi-circular member is placed on the opposite side of the distorted pipe and extensions joined. With an equal number of jack bolt assemblies in each member, corresponding jack bolt assemblies in the two members are diametrically aligned forming pairs. To re-round the distorted end, pairs of these jack bolt assemblies are tightened in a “star sequence” to re-round the distorted end. The re-rounded end is inserted into the mechanical joint fitting or pipe bell and the extensions are decoupled to easily remove the circular tool from the re-rounded end.
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公开(公告)号：US20220018472A1
公开(公告)日：2022-01-20
申请号：US17490872
申请日：2021-09-30
摘要： A method for using a gland assembly includes sliding a gland assembly over an end of a pipe, the pipe defining an outer surface, the gland assembly comprising a gland, a joint restraint assembly, and a gasket, the joint restraint assembly comprising a gripper and a spring, the spring configured to engage the gripper and the gasket; inserting the end of the pipe into a socket of a piping element; fastening the gland to the piping element; disabling a deactivation mechanism of the joint restraint assembly; and engaging the joint restraint assembly with the outer surface of the pipe to prevent removal of the pipe from the piping element.
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公开(公告)号：US20210381632A1
公开(公告)日：2021-12-09
申请号：US17409945
申请日：2021-08-24
IPC分类号： F16L37/127 , F16L21/08 , F16L21/04
摘要： A method of coupling a pipe length to a piping element can include arranging a gland over an end of the pipe length, the gland including a joint restraint assembly, the pipe length defining an outer pipe surface; arranging the end of the pipe length within a socket defined by the piping element; fastening the gland to the piping element; and activating the joint restraint assembly by hand to prevent removal of the pipe length from the socket.
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公开(公告)号：US11002389B2
公开(公告)日：2021-05-11
申请号：US15768654
申请日：2017-10-16
发明人： Jong-Tae Lee , Ki-Woong Hwang
摘要： A one-touch pipe connection device includes a socket main body portion including a plurality of pipe fitting portions in each of which a pipe is inserted; a sealing portion that provides sealing between the socket main body portion and the pipe; and a cap portion having a through hole through which the pipe is inserted into the pipe fitting portion and configured to be coupled to the pipe fitting portion by rotation while moving towards the pipe fitting portion such that the sealing portion is pressed and deformed to closely contact the pipe.
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