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公开(公告)号：US11028893B2
公开(公告)日：2021-06-08
申请号：US16779799
申请日：2020-02-03
Applicant: NHK Spring Co., Ltd.
Inventor： Toshio Kazama , Noritoshi Takamura , Shigeki Ishikawa , Takeshi Suzuki
IPC: F16F1/02 , F16F1/14 , C22C21/10 , B60G11/14 , C22C21/06 , B60G21/055 , B60G11/18 , C22C21/00 , F16F1/06 , C22C1/04
Abstract: An elastic member is an elastic member formed of a wire having a cross section that is substantially circular, the cross section being orthogonal to a longitudinal direction, and the elastic member being expandable and contractible in a predetermined direction; and including: a first alloy portion that is made of an aluminum alloy having a tensile strength larger than 950 MPa and equal to or less than 1100 MPa at room temperature; and a second alloy portion configured to cover the first alloy portion, the second alloy portion having a thickness in a radial direction smaller than a radius of the first alloy portion, and being made of an aluminum alloy having a tensile strength of 100 MPa to 650 MPa at room temperature.
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公开(公告)号：US20200173510A1
公开(公告)日：2020-06-04
申请号：US16779799
申请日：2020-02-03
Applicant: NHK Spring Co., Ltd.
Inventor： Toshio Kazama , Noritoshi Takamura , Shigeki Ishikawa , Takeshi Suzuki
Abstract: An elastic member is an elastic member formed of a wire having a cross section that is substantially circular, the cross section being orthogonal to a longitudinal direction, and the elastic member being expandable and contractible in a predetermined direction; and including: a first alloy portion that is made of an aluminum alloy having a tensile strength larger than 950 MPa and equal to or less than 1100 MPa at room temperature; and a second alloy portion configured to cover the first alloy portion, the second alloy portion having a thickness in a radial direction smaller than a radius of the first alloy portion, and being made of an aluminum alloy having a tensile strength of 100 MPa to 650 MPa at room temperature.
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公开(公告)号：US10591011B2
公开(公告)日：2020-03-17
申请号：US15740634
申请日：2016-06-28
Applicant: NHK SPRING CO., LTD.
Inventor： Toshio Kazama , Noritoshi Takamura , Shigeki Ishikawa , Takeshi Suzuki
IPC: F16F1/02 , F16F1/14 , C22C21/10 , B60G11/14 , C22C21/06 , B60G21/055 , B60G11/18 , C22C21/00 , F16F1/06 , C22C1/04
Abstract: An elastic member is an elastic member formed of a wire having a cross section that is substantially circular, the cross section being orthogonal to a longitudinal direction, and the elastic member being expandable and contractible in a predetermined direction; and including: a first alloy portion that is made of an aluminum alloy having a tensile strength larger than 950 MPa and equal to or less than 1100 MPa at room temperature; and a second alloy portion configured to cover the first alloy portion, the second alloy portion having a thickness in a radial direction smaller than a radius of the first alloy portion, and being made of an aluminum alloy having a tensile strength of 100 MPa to 650 MPa at room temperature.
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公开(公告)号：US20200072272A1
公开(公告)日：2020-03-05
申请号：US16495466
申请日：2018-03-02
Applicant: NHK Spring Co., Ltd.
Inventor： Noriyoshi Kaneda , Takeshi Suzuki
Abstract: A fastening member includes a screw thread formed therein. A portion including a crest portion of the screw thread is formed of a first alloy material and includes: a thick portion where the portion is maximized in thickness in a circumferential direction; and a thin portion where the portion is minimized in thickness in the circumferential direction. A portion including a root of the screw thread is formed of a second alloy material having a tensile strength higher than that of the first alloy material.
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公开(公告)号：US10294977B2
公开(公告)日：2019-05-21
申请号：US15126698
申请日：2015-03-20
Applicant: NHK Spring Co., Ltd. , TOPURA CO., LTD.
Inventor： Toshio Kazama , Takeshi Suzuki , Shigeto Mori
Abstract: A fastening member includes a first alloy portion and a second alloy portion. The first alloy portion is made of an aluminum alloy including 0.005 wt % to 5.0 wt % zinc and 0.6 wt % to 2.0 wt % magnesium and is provided to a part that comes into contact with at least one of a plurality of members serving as a fastening target. The second alloy portion is made of an aluminum alloy including more than 2.0 wt % and 5.0 wt % or less magnesium and more than 5.0 wt % and 10 wt % or less zinc and is joined to the first alloy portion.
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Patent Agency Ranking
公开(公告)号：US20170089384A1
公开(公告)日：2017-03-30
申请号：US15126698
申请日：2015-03-20
Applicant: NHK Spring Co., Ltd. , TOPURA CO., LTD.
Inventor： Toshio Kazama , Takeshi Suzuki , Shigeto Mori
CPC classification number: F16B33/00 , B32B15/016 , C22C21/06 , C22C21/10 , F16B33/06
Abstract: A fastening member includes a first alloy portion and a second alloy portion. The first alloy portion is made of an aluminum alloy including 0.005 wt % to 5.0 wt % zinc and 0.6 wt % to 2.0 wt % magnesium and is provided to a part that comes into contact with at least one of a plurality of members serving as a fastening target. The second alloy portion is made of an aluminum alloy including more than 2.0 wt % and 5.0 wt % or less magnesium and more than 5.0 wt % and 10 wt % or less zinc and is joined to the first alloy portion.
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公开(公告)号：US11505851B2
公开(公告)日：2022-11-22
申请号：US16955425
申请日：2018-12-21
Applicant: NHK Spring Co., Ltd.
Inventor： Takeshi Suzuki , Junichi Nakano
Abstract: An aluminum alloy according to the present invention includes 1.2% by mass to 4.0% by mass of copper, 4.0% by mass to 14.0% by mass of zinc, 0.5% by mass to 4.0% by mass of magnesium, 0.01% or less of silicon, and 0.01% or less of iron, with the balance containing aluminum and inevitable impurities, and has an average equivalent circle crystal grain size of 500 nm or less.
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公开(公告)号：US11378147B2
公开(公告)日：2022-07-05
申请号：US16559137
申请日：2019-09-03
Applicant: NHK SPRING CO., LTD.
Inventor： Takeshi Suzuki , Yoshiki Ono , Shimpei Kurokawa , Kosuke Shibairi
IPC: F16F1/02 , C21D9/02 , C22C38/04 , C22C38/02 , C21D7/06 , C21D1/18 , C22C38/18 , C21D8/06 , B24C1/10
Abstract: A spring consists of, by mass %, 0.5 to 0.7% of C, 1.0 to 2.0% of Si, 0.1 to 1.0% of Mn, 0.1 to 1.0% of Cr, not more than 0.035% of P, not more than 0.035% of S, and the balance of Fe and inevitable impurities. The spring has a structure including not less than 65% of bainite and 4 to 13% of residual austenite by area ratio in a cross section. The spring has a compressive residual stress layer in a cross section from a surface to a depth of 0.35 mm to D/4, in which D (mm) is a circle-equivalent diameter of the cross section. The spring has a high hardness layer with greater hardness than a center portion by 50 to 500 HV from a surface to a depth of 0.05 to 0.3 mm.
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公开(公告)号：US11286972B2
公开(公告)日：2022-03-29
申请号：US16495466
申请日：2018-03-02
Applicant: NHK Spring Co., Ltd.
Inventor： Noriyoshi Kaneda , Takeshi Suzuki
Abstract: A fastening member includes a screw thread formed therein. A portion including a crest portion of the screw thread is formed of a first alloy material and includes: a thick portion where the portion is maximized in thickness in a circumferential direction; and a thin portion where the portion is minimized in thickness in the circumferential direction. A portion including a root of the screw thread is formed of a second alloy material having a tensile strength higher than that of the first alloy material.
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公开(公告)号：US11279990B2
公开(公告)日：2022-03-22
申请号：US15999785
申请日：2017-02-16
Applicant: NHK SPRING CO., LTD. , TOPURA CO., LTD.
Inventor： Noriyoshi Kaneda , Takeshi Suzuki , Kouhei Miyamoto , Naoki Horiuchi
IPC: C22C21/14 , C22C21/16 , C22C21/18 , C22C21/08 , C22C21/02 , C22C21/00 , C22F1/043 , C22F1/057 , F16B19/06 , F16B35/00 , F16B37/00
Abstract: An aluminum alloy contains 0.7% to 1.8% of silicon, 0.5% to 2.1% of copper, 0.4% to 1.8% of manganese, 0.6% to 1.6% of magnesium, and 0.1% to 0.7% of zinc in terms of mass ratio and the balance aluminum with inevitable impurities.
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