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公开(公告)号：US11708928B2
公开(公告)日：2023-07-25
申请号：US17791499
申请日：2020-10-13
CPC分类号： F16L47/041 , F16L43/008
摘要： A resin joint includes a joint body having a flow path, sleeves, and union nuts that fix tubes to the joint body. The joint body has a body portion with a curved inner peripheral surface and a straight portion protruding from an end portion of the body portion. The straight portion has outer and inner cylindrical portions radially arranged inside the outer cylindrical portion. An end portion of the inner cylindrical portion is positioned closer to the body portion than is an end portion of the outer cylindrical portion. A groove portion extending parallel with the outer and inner cylindrical portions in an axial direction is formed between an inner peripheral surface of the outer cylindrical portion and an outer peripheral surface of the inner cylindrical portion. The tube is fixed to the joint body such that a press-fit portion of the sleeve is press-fitted in the groove portion.
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公开(公告)号：USD985739S1
公开(公告)日：2023-05-09
申请号：US29785380
申请日：2021-05-25
设计人： Atsushi Nakano , Shingo Higuchi , Kazukiyo Teshima
摘要： FIG. 1 is a top perspective view of a gasket, according to the present design.
FIG. 2 is a front elevation view of the gasket of FIG. 1.
FIG. 3 is a rear elevation view of the gasket of FIG. 1.
FIG. 4 is a left side elevation view of the gasket of FIG. 1.
FIG. 5 is a right side elevation view of the gasket of FIG. 1, the right side elevation view being identical to the left side elevation view of FIG. 4.
FIG. 6 is a top plan view of the gasket of FIG. 1.
FIG. 7 is a bottom plan view of the gasket of FIG. 1, the bottom plan view being identical to the top plan view of FIG. 6.
FIG. 8 is a cross-sectional view of the gasket of FIG. 1, along cut line 8-8 that is visible in FIG. 2; and,
FIG. 9 is a cross-sectional view of the gasket of FIG. 1, along cut line 9-9 that is visible in FIG. 2.-
公开(公告)号：US12025244B2
公开(公告)日：2024-07-02
申请号：US17916306
申请日：2021-03-09
发明人： Ayumi Kurosaki , Shingo Higuchi , Kazukiyo Teshima
摘要： An inner ring of a pipe joint includes a first tapered surface formed at one axial end portion of an inner circumferential surface such that a diameter thereof gradually increases from another axial side toward one axial end thereof in a state before a bulge portion is press-fitted into an end portion of a tube. A diameter increase starting point of the first tapered surface is located in a range from a deformation starting point, which serves as a starting point from which an inner circumferential surface is deformed due to the bulge portion 5 receiving external force from the tube 8 when the bulge portion is press-fitted into the end portion of the tube, to a position, on the inner circumferential surface, corresponding to one axial end of an outer circumferential surface of a body portion.
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公开(公告)号：US11668292B2
公开(公告)日：2023-06-06
申请号：US17605265
申请日：2020-02-07
发明人： Kazukiyo Teshima , Yu Notoji , Shingo Higuchi
CPC分类号： F04B43/02 , F04B43/0054 , F04B53/14 , F05B2210/11
摘要： A rolling diaphragm 5 of a rolling diaphragm pump 1 has a movable portion 31 reciprocatable together with a piston 3, a fixed portion 32 fixed to a housing 2, and a thin film portion 33 connecting the movable portion 31 and the fixed portion 32 and bending due to reciprocation of the piston 3. A rubber layer 6 is overlaid on the thin film portion 33 without being adhered to the thin film portion 33, an end portion 6a on the movable portion 31 side of the rubber layer 6 is fixed to the piston 3, and an end portion 6b on the fixed portion 32 side of the rubber layer 6 is fixed to the housing 2.
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公开(公告)号：US12031645B2
公开(公告)日：2024-07-09
申请号：US17792748
申请日：2021-01-14
摘要： An inner ring 4 of a pipe joint 1 includes a cylindrical body portion 5 having a communication hole 5a for providing communication between flow passage holes 2c and 8a of a joint body 2 and a tube 8, and an annular primary sealing portion 11 projecting from a radially inner side of an axially outer end portion of the body portion 5 toward an axially outer side and to be press-fitted into an annular primary sealing groove 2d formed on the joint body 2. The primary sealing portion 11 is formed so as to be tapered from an axially inner end thereof toward an axially outer end thereof in an axial cross-sectional view, and has a flat surface 11c extending from a radially outer end 11b of the axially outer end thereof toward the radially inner side.
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公开(公告)号：US20240044425A1
公开(公告)日：2024-02-08
申请号：US18258813
申请日：2021-10-04
发明人： Yohei Okawa , Ayumi Kurosaki , Shingo Higuchi , Kazukiyo Teshima
IPC分类号： F16L13/16
CPC分类号： F16L13/165
摘要： A pipe joint includes: an inner ring having a bulge portion to be press-fitted into an end portion of the tube; a joint body having an inner circumference into which an end portion of the inner ring is to be press-fitted, and having an external thread portion on an outer circumference thereof; and a union nut having an internal thread portion to be tightened to the external thread portion, and configured to press the end portion of the tube when the internal thread portion is tightened to the external thread portion. The bulge portion has a tapered portion configured to generate a surface pressure between the tube and the tapered portion by pressing by the union nut. An outer circumferential surface of the tapered portion has a concave surface portion formed in a concave surface shape in an axial cross-sectional view.
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