公开(公告)号：US11285776B2

公开(公告)日：2022-03-29

申请号：US16146269

申请日：2018-09-28

Applicant: NHK SPRING CO., LTD.

Inventor： Akira Tange ,  Masato Sugawara ,  Yutaka Wakabayashi

IPC: B60G21/055 ,  F16F1/02 ,  F16F1/14 ,  B23P23/04

Abstract: A terminal sealed portion is formed on an end portion of a hollow rod made of steel. An enclosed space is formed on an inner side of the hollow rod. At an end of the enclosed space, a terminal gap is formed. A volatile powdered rust inhibitor is supplied in the enclosed space. As the volatile powdered rust inhibitor is vaporized, the enclosed space is turned into a rust-inhibiting atmosphere. As the vaporized component of the volatile powdered rust inhibitor is adsorbed to an inner surface of the enclosed space, an inner surface rust-inhibiting film is formed. The vaporized component also enters inside the terminal gap, and forms a terminal rust-inhibiting film.

公开(公告)号：US20220063785A1

公开(公告)日：2022-03-03

申请号：US17422881

申请日：2020-02-14

Applicant: NHK SPRING Co., Ltd.

Inventor： Masato SHIRAO ,  Marino AKITA ,  Takafumi OSHIMA

IPC: B63H20/12 ,  B63H25/42

Abstract: This outboard motor control device controls a plurality of outboard motors disposed on a rear portion of a hull of a boat. Each of the outboard motors includes a propulsion unit and a steering actuator. A boat includes an operation unit configured to operate the steering actuator and the propulsion unit. The operation unit is able to be positioned at a first position where the outboard motors do not generate a propulsion force of the boat and a second position where the outboard motors generate a propulsion force for moving the boat in a left-right direction. When the operation unit is moved from the first position to the second position and maintained at the second position, the outboard motors generate a first propulsion force during a first period from a first timing when the operation unit is moved to the second position to a second timing and subsequently generate a second propulsion force greater than the first propulsion force during a second period after the second timing.

公开(公告)号：US11219970B2

公开(公告)日：2022-01-11

申请号：US16043070

申请日：2018-07-23

Applicant: NHK SPRING CO., LTD.

Inventor： Naoki Tanaka

IPC: B23K37/04 ,  B23K26/244 ,  B23K101/36 ,  B23K26/22 ,  B23K26/06 ,  B23K26/08

Abstract: As first-time laser irradiation is performed on a workpiece, an initial nugget is formed. By emitting a laser beam for the second time at the initial nugget, a diameter of a back-side nugget portion is increased. A nugget includes a front-side nugget portion formed in a first plate, the back-side nugget portion formed in a second plate, and an annular flat surface portion. The flat surface portion is along a boundary portion between the first plate and the second plate. In a thicknesswise cross section of the second plate, a tilt angle of a peripheral surface of the back-side nugget portion is increased as a thicknesswise position of the peripheral surface approximates to a rear face of the second plate.

公开(公告)号：US20210396292A1

公开(公告)日：2021-12-23

申请号：US17281331

申请日：2019-09-30

Applicant: NHK SPRING CO., LTD.

Inventor： Yusuke TERADA

IPC: F16F3/02 ,  F16F1/32 ,  B21D35/00

Abstract: A disc spring which is used by arranging a plurality of the disc springs in an axial direction along a central axis includes an annular body plate portion that has an inner peripheral surface and aa outer peripheral surface which gradually extend toward one side in the axial direction from an outside toward an inside in a radial direction, and a stopper portion that protrudes from the body plate portion in a direction intersecting the inner peripheral surface and the outer peripheral surface of the body plate portion, in which in a case where an axial compression load is applied to a spring member in which a plurality of the disc springs are arranged in the axial direction, the stopper portion abuts another disc spring adjacent in the axial direction or a support member supporting an axial end portion of the spring member, the body plate portion and the stopper portion are integrally formed, and both axial end edges of the stopper portion are positioned inside both axial end edges of the body plate portion in the axial direction.

公开(公告)号：US11201040B2

公开(公告)日：2021-12-14

申请号：US16553988

申请日：2019-08-28

Applicant: NHK SPRING CO., LTD.

Inventor： Go Takahara ,  Toshihiko Hanamachi ,  Arata Tatsumi

IPC: H01J37/32 ,  H01L21/67 ,  H01L21/687 ,  C23C16/458 ,  C23C14/50 ,  C23C14/54

Abstract: A substrate supporting unit is provided. The substrate supporting unit possesses a shaft, a first heater, and a stage. The first heater is located in the shaft and is configured to heat an upper portion of the shaft. The stage is located over the shaft and includes a first plate, a second plate over the first plate, and a second heater between the first plate and the second plate.

公开(公告)号：US11174880B2

公开(公告)日：2021-11-16

申请号：US16492708

申请日：2018-01-25

Applicant: NHK SPRING CO., LTD.

Inventor： Hiroshi Mizukami ,  Ippei Iwai ,  Mieko Yanagida

IPC: F16L55/04 ,  F15B1/10 ,  F16L55/053

Abstract: An accumulator includes a pressure vessel and a partition portion separating an interior space of the pressure vessel into a liquid chamber and a gas chamber so that a volume ratio between the liquid chamber and the gas chamber in the pressure vessel is variable. The pressure vessel includes a first section including a thread portion for fastening the accumulator to a support member and a second section joined to the first section and formed by a single piece including a tool engagement portion capable of engaging with a tool for rotating the accumulator. The first section and the second section are fitted together by mating portions coaxial with the thread portion and the tool engagement portion.

公开(公告)号：US20210316587A1

公开(公告)日：2021-10-14

申请号：US17270275

申请日：2019-08-23

Applicant: NHK SPRING Co., Ltd.

Inventor： Yuichi SHIBATA ,  Taisuke SUWA

IPC: B60G11/52

Abstract: A suspension coil spring device includes a compression coil spring that has a coating film, a rubber vibration isolator, and an adhesive layer that joins the compression coil spring and the rubber vibration isolator to each other. The adhesive layer is a cured product of a reactive hot melt adhesive.

公开(公告)号：US20210310545A1

公开(公告)日：2021-10-07

申请号：US17263862

申请日：2019-07-31

Applicant: NHK SPRING CO., LTD. ,  DAIDO KOGYOCO., LTD.

Inventor： Yoshio YAMADA ,  Takao KOBAYASHI ,  Kazubito HIRAOKA ,  Sbuji TAKAHASH! ,  Hideaki SEKI

IPC: F16H7/08

Abstract: A tensioner includes a movable section, a fixed section, a flat spiral spring, and a back-up spring. The movable section receives load from an entrained transmission body through a tension member. The fixed section supports the movable section so as to be capable of displacing. The flat spiral spring biases the movable section so as to resist the tension member. The flat spiral spring unwinds in a state in which there is a small inter-plate friction force in cases in which there is a large biasing force applied to the tension member to counter load acting from the tension member. The flat spiral spring winds-up in a state in which there is a large inter-plate friction force in cases in which there is a small biasing force applied to the tension member to counter load acting from the tension member. The back-up spring limits wind-up of the flat spiral spring.

公开(公告)号：US20210308740A1

公开(公告)日：2021-10-07

申请号：US17273923

申请日：2019-09-03

Applicant: NHK SPRING CO., lTD.

Inventor： Masaaki MAEDA

IPC: B21F35/00

Abstract: Provided are a forming method for an arc spring, capable of easily and surely locating bearing faces on both end faces of a semi-finished product in predetermined positions, the bearing faces having lengths within permissible ranges in a circumferential direction. For a semi-finished product prior to curving an axis, it is determined whether circumferential lengths of bearing faces on both end faces are respectively within the permissible ranges based on end face image information of the both end faces imaged in an axial direction prior to the curving, a circumferential rotational position of the semi-finished product capable of respectively locating the bearing faces within the predetermined positions is specified using the end face image information, and the semi-finished product is rotated to the specified rotational position, and the wedge part is sequentially driven into inter-wires of the semi-finished product to deform the semi-finished product.

公开(公告)号：US20210301404A1

公开(公告)日：2021-09-30

申请号：US17263573

申请日：2019-08-06

Applicant: NHK Spring Co., Ltd.

Inventor： Satoshi Hirano

IPC: C23C24/04

Abstract: A method of manufacturing a laminate includes: forming a preprocessing coating on a surface of a substrate having insulating properties by accelerating the powdered material together with gas and spraying the powdered material in a solid phase onto the surface of the substrate, the powdered material including aluminum or an aluminum alloy as a main component; and forming a heat-treated coating having a surface with irregular asperities by heating a preprocessing laminate including the substrate and the preprocessing coating formed on the surface of the substrate.