公开(公告)号：US20240151197A1

公开(公告)日：2024-05-09

申请号：US18279825

申请日：2022-04-21

Applicant: USUI CO., LTD.

Inventor： Kosuke SUZUKI

IPC: F02M55/02

CPC classification number: F02M55/025 ,  F02M55/02

Abstract: A concentration of the stress due to a fuel pressure is avoided at a communication port between a fuel passage of a fuel rail body and a branch hole and the surrounding portion of the communication port at which the maximum stress is generated. A fuel rail having a fuel rail body 1 provided with a fuel passage 2 in a axial center direction of the fuel rai body 1, a boss 3 is provided on an outer peripheral surface of the fuel rai body 1, a receiving recess 5 of a mating member 4 is provided on an inner periphery of the boss 3, a branch hole 7 is provided between one end portion 6 of the receiving recess 5 of the boss 3 and the fuel passage 2 of the fuel rail body 1 for making the fuel passage 2 communicate with the receiving recess 5, the one end portion 6 being nearer to the fuel rail body 1 than the other end portion, and an axial length of the branch hole 7 is greater than a wall thickness of the fuel rail body 1.

公开(公告)号：US20240050882A1

公开(公告)日：2024-02-15

申请号：US18268019

申请日：2021-12-27

Applicant: USUI CO., LTD.

Inventor： Tetsunobu SUZUKI ,  Masaru SUZUKI

IPC: B01D45/16

CPC classification number: B01D45/16 ,  B01D2257/80 ,  F02M26/35

Abstract: A gas-liquid separator comprises a pipe member through which a gas-liquid two-phase fluid flows, the gas-liquid two-phase fluid comprising gas and liquid, and a swirling flow generator within the pipe member, the swirling flow generator being configured to swirl the gas-liquid two-phase fluid to separate the gas and the liquid therefrom. The swirling flow generator comprises blades that extend spirally about a central axis of the pipe member. Each of the blades comprises a distal end in a pipe radial direction of the pipe member. The distal ends are continuous over an entire circumference of the pipe member when the pipe member is viewed from an axial direction thereof. A communication portion is provided between the pipe member and the swirling flow generator. The communication portion is configured to communicate a first space upstream of the swirling flow generator with a second space downstream of the swirling flow generator.

公开(公告)号：USD987686S1

公开(公告)日：2023-05-30

申请号：US29772814

申请日：2021-03-04

Applicant: USUI CO., LTD.

Designer： Kazuma Hinobayashi ,  Kazuhiro Serizawa

Abstract: FIG. 1 is a front view of an injector holder of fuel rail for gasoline direct-injection engine showing our new design;
FIG. 2 is a rear view thereof;
FIG. 3 is a right side view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a top view thereof;
FIG. 6 is a bottom view thereof;
FIG. 7 is a front view thereof with section lines;
FIG. 8 is a cross-sectional view along line 8-8 of FIG. 7; and,
FIG. 9 is a cross-sectional view along line 9-9 of FIG. 7.
The dashed broken line showing is included for the purpose of illustrating portions of the article that form no part of the claim.

公开(公告)号：US20220112572A1

公开(公告)日：2022-04-14

申请号：US17427864

申请日：2020-02-13

Applicant: NIPPON STEEL CORPORATION ,  USUI CO., LTD.

Inventor： Taizo MAKINO ,  Masahiro YAMAZAKI ,  Yuji ARAI ,  Osamu ENDO ,  Naoki SERIZAWA ,  Tatsuya MASUDA

IPC: C21D9/08 ,  F16L9/02 ,  C22C38/50 ,  C22C38/48 ,  C22C38/46 ,  C22C38/44 ,  C22C38/42 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C21D8/10 ,  C21D6/00

Abstract: A steel pipe for a fuel injection pipe has a chemical composition consisting of, by mass %: C: 0.17 to 0.27%, Si: 0.05 to 0.40%, Mn: 0.30 to 2.00%, P: 0.020% or less, S: 0.0100% or less, O: 0.0040% or less, Ca: 0.0010% or less, Al: 0.005 to 0.060%, N: 0.0020 to 0.0080%, Ti: 0.005 to 0.015%, Nb: 0.015 to 0.045%, Cr: 0 to 1.00%, Mo: 0 to 1.00%, Cu: 0 to 0.50%, Ni: 0 to 0.50%, V: 0 to 0.15%, and the balance: Fe and impurities. The metal micro-structure consists substantially of tempered martensite, or tempered martensite and tempered bainite. A prior-austenite grain size number is 9.0 or more. The hardness is within the range of 350 to 460 HV1. When a maximum value of a square root of an area of inclusions observed in a cross section perpendicular to a longitudinal direction of the steel pipe is taken as an (n=1 to 20), a maximum value amax of an is 30.0 μm or less, and an average value aav of an is 40% or more of amax.

公开(公告)号：US20210348106A1

公开(公告)日：2021-11-11

申请号：US17284926

申请日：2019-10-23

Applicant: USUI CO., LTD.

Inventor： Toshifumi KASHIWAGI ,  Iwane SUZUKI

IPC: C12M1/00 ,  C12M1/34 ,  B01F3/04 ,  B01F5/10 ,  B01F15/00

Abstract: The gas dissolution device includes a dissolution vessel storing a part of culture solution in a culture vessel, a gas supply pipe connected to a carbon dioxide cylinder and supplying carbon dioxide through an end inserted into the dissolution vessel, a gas discharger provided at the gas supply pipe and turning the carbon dioxide into microbubbles, and a mass flow controller controlling a flowrate of the carbon dioxide flowing in the gas supply pipe. Here, a water depth from the gas discharger to a liquid level of the culture solution in the dissolution vessel is set deeper than a water depth of the culture solution in the culture vessel.

公开(公告)号：US11015231B2

公开(公告)日：2021-05-25

申请号：US16699113

申请日：2019-11-29

Applicant: USUI CO., LTD.

Inventor： Koichi Hayashi

IPC: B23K1/00 ,  C21D9/08 ,  C22C38/12 ,  F02M55/04 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/44 ,  F02M55/02 ,  B23K103/04 ,  B23K101/04

Abstract: To obtain, at low cost, a fuel rail that maintains low hardness and good formability before being formed into a tube stock, can be made to form a welded pipe, and has high-strength properties with which the fuel rail can withstand a high fuel pressure even when formed so as to be relatively thin. A fuel rail for gasoline direct injection that is used at a fuel pressure of at least 30 MPa and is formed from an iron-alloy welded pipe. The fuel rail comprises an iron alloy that contains chemical components of C, Si, Mn, P, S, Nb, and Mo. The plate thickness t and the outer diameter D of the fuel rail have a ratio t/D of 0.2 or less. A bainitic structure can be precipitated by brazing the fuel rail in a furnace during manufacturing.

公开(公告)号：US20190264643A1

公开(公告)日：2019-08-29

申请号：US16319825

申请日：2017-06-26

Applicant: USUI CO., LTD.

Inventor： Kengo MUROFUSHI ,  Takanori KANDA

IPC: F02M55/00

Abstract: To obtain an end cap that enables a brazing material ring to be appropriately placed and brazing to be reliably performed when inserting and placing an insertion part of the end cap in an end part of a rail body and securing the end cap by brazing it with the brazing material ring and, also, that is unlikely to result in a broken rail body when internal pressure is applied. An end cap to be inserted into and placed inside an end part of a rail body 2 and secured to an inner circumference of the rail body 2 by brazing, wherein an outer circumference of an insertion part 3 for insertion into the rail body 2 comprises an engagement groove 10 that is composed of a pair of side surfaces 11, 12 and a bottom surface 13 and that is capable of engagement with a brazing material ring 15.

公开(公告)号：US20190184440A1

公开(公告)日：2019-06-20

申请号：US15848619

申请日：2017-12-20

Applicant: USUI CO., LTD. ,  USUI INTERNATIONAL CORPORATION

Inventor： Vishal Shah ,  Masakazu Koike

IPC: B21D7/14 ,  B21D7/08

CPC classification number: B21D7/14 ,  B21D7/08

Abstract: An apparatus is provided for bending a pipe and checking a bent shape of the pipe. The apparatus includes a bender for forming a bend in the pipe and at least two cameras for determining an alignment of the pipe in proximity to the free end of the pipe.

公开(公告)号：US20180051665A1

公开(公告)日：2018-02-22

申请号：US15559829

申请日：2016-02-01

Applicant: USUI CO, LTD.

Inventor： Hiroyuki NISHIZAWA ,  Shuji SUZUKI

IPC: F02M55/02

CPC classification number: F02M55/025 ,  F02M2200/05 ,  F02M2200/8076 ,  F02M2200/9053 ,  F02M2200/9076

Abstract: To obtain a gasoline direct injection rail that enables plating treatment to be easily and reliably performed on the inside of a rail body and an inlet part, also, that includes an orifice, and that has excellent mechanical properties. In a gasoline direct injection rail comprising a steel rail body 4, an inlet part 6 provided integrally with or separately from a first end 5 of the rail body 4 and comprising therein a communication passage 7 in communication with a fuel passage of the rail body 4, and a plurality of injector holders in communication with the fuel passage, a stainless orifice member 1 formed separately from the rail body 4 is securely disposed in the communication passage 7 of the inlet part 6.

公开(公告)号：US20250163872A1

公开(公告)日：2025-05-22

申请号：US18839001

申请日：2023-02-27

Applicant: USUI CO., LTD.

Inventor： Tomoya SASAKURA

IPC: F02M25/08 ,  B01D53/04

Abstract: A vehicle pipe member includes a first end connected to a canister that adsorbs fuel boil-off gas in a fuel tank; a second end open to an atmosphere; a pipe body comprising an intermediate portion in a length direction and a bent portion formed at the intermediate portion; a plurality of adsorbing members hat fill the pipe body and adsorb the fuel boil-off gas in gas discharged from the canister to the atmosphere; and at least one support member provided within the pipe body and supporting an inner diameter of the pipe body, wherein the at least one support member is disposed at the bent portion.