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公开(公告)号：US20200271251A1
公开(公告)日：2020-08-27
申请号：US16794969
申请日：2020-02-19
发明人： Takahiro Gunji , Atsushi Kurosawa
IPC分类号： F16L19/025 , B60T17/04 , F16L58/04
摘要： A tube fitting is provided with a resin coating layer over a coated region surfaces of a threaded portion and a contact portion. The resin coating layer includes a polyethylene based substance, a lubricant, and solid particles. When mass per unit area w (g/m2) is defined as a value obtained by dividing the mass difference between a state with the resin coating layer and a state without the resin coating layer by the surface area of the coated region, the mass per unit area w satisfies a relation 0.79
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公开(公告)号：US20240084935A1
公开(公告)日：2024-03-14
申请号：US18517790
申请日：2023-11-22
发明人： Takahiro Gunji , Atsushi Kurosawa
IPC分类号： F16L19/025 , B32B1/08 , B60T17/04 , F16L19/02 , F16L19/028 , F16L58/04 , F16L58/18
CPC分类号： F16L19/025 , B32B1/08 , B60T17/043 , F16L19/0243 , F16L19/0283 , F16L58/04 , F16L58/184 , B32B2597/00
摘要： A method for manufacturing a tube fitting includes steps of: preparing the tube fitting; and forming a resin coating layer upon a coated region provided upon the surface of the tube fitting. Forming the resin coating layer includes: dipping the tube fitting into a coating material that includes as components a polyethylene based substance, a lubricant, and solid particles and having viscosity within a range of 4.24 to 5.27 mPa·s at 25° C., and adhering the coating material to the coated region; and, drying the coating material which is adhered to the coated region of the tube fitting. In the dipping step, the mass per unit area w is controlled within a range 0.79
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公开(公告)号：US11879572B2
公开(公告)日：2024-01-23
申请号：US16794969
申请日：2020-02-19
发明人： Takahiro Gunji , Atsushi Kurosawa
IPC分类号： F16L19/025 , B60T17/04 , F16L58/04 , F16L19/02 , F16L19/028 , F16L58/18 , B32B1/08
CPC分类号： F16L19/025 , B32B1/08 , B60T17/043 , F16L19/0243 , F16L19/0283 , F16L58/04 , F16L58/184 , B32B2597/00
摘要： A tube fitting is provided with a resin coating layer over a coated region surfaces of a threaded portion and a contact portion. The resin coating layer includes a polyethylene based substance, a lubricant, and solid particles. When mass per unit area w (g/m2) is defined as a value obtained by dividing the mass difference between a state with the resin coating layer and a state without the resin coating layer by the surface area of the coated region, the mass per unit area w satisfies a relation 0.79
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公开(公告)号：US11958454B2
公开(公告)日：2024-04-16
申请号：US17634064
申请日：2020-08-07
发明人： Takahiro Gunji , Atsushi Kurosawa
IPC分类号： B60T17/04 , F16B7/18 , F16B33/06 , F16L19/028 , F16L58/18
CPC分类号： B60T17/043 , F16B7/18 , F16B33/06 , F16L19/028 , F16L58/184
摘要： A tube fitting includes: a zinc-based plated layer; and a resin coating layer that is positioned at an outermost surface at an outer side of the zinc-based plated layer and includes a polyethylene substance, a lubricant, and solid particles. When a fitting average plating thickness t relating to the thickness of the zinc-based plated layer is defined, 2.1
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公开(公告)号：US20240093812A1
公开(公告)日：2024-03-21
申请号：US18517598
申请日：2023-11-22
发明人： Takahiro Gunji , Atsushi Kurosawa
IPC分类号： F16L19/025 , B32B1/08 , B60T17/04 , F16L19/02 , F16L19/028 , F16L58/04 , F16L58/18
CPC分类号： F16L19/025 , B32B1/08 , B60T17/043 , F16L19/0243 , F16L19/0283 , F16L58/04 , F16L58/184 , B32B2597/00
摘要： An axial force measurement device includes a frame, a tightening actuation unit that performs tightening operation upon a screw type tube fitting installed upon a tube upon which is formed an annular portion projecting in the radially outward direction from the tube, a testing member, and a mating member holding unit that holds the testing member into which the tube fitting is screwed and that is coupled to the tube. The tightening actuation unit and the mating member holding unit are provided to the frame in line along the direction of a reference axis that extends in the direction of the center line of the tube fitting and the tube axis of the tube. The testing member has a first part that engages with the tube fitting, and a second part against which the annular portion of the tube is pressed.
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公开(公告)号：US20220348181A1
公开(公告)日：2022-11-03
申请号：US17634064
申请日：2020-08-07
发明人： Takahiro Gunji , Atsushi Kurosawa
摘要： A tube fitting includes: a zinc-based plated layer; and a resin coating layer that is positioned at an outermost surface at an outer side of the zinc-based plated layer and includes a polyethylene substance, a lubricant, and solid particles. When a fitting average plating thickness t relating to the thickness of the zinc-based plated layer is defined, 2.1
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