公开(公告)号：US20240271000A1

公开(公告)日：2024-08-15

申请号：US18567205

申请日：2022-06-10

Applicant: NHK SPRING CO., LTD.

Inventor： Daisuke IBANO ,  Tsuyoshi MATSUDA ,  Norihumi ARISAKA

IPC: C09D175/04 ,  C08G18/10 ,  C08G18/76 ,  F16F1/02

CPC classification number: C09D175/04 ,  C08G18/10 ,  C08G18/76 ,  F16F1/024 ,  C08G2150/00 ,  F16F2228/007

Abstract: A coating agent, a cured product of which after curing having a tear strength, at each of 25° C. and 80° C., of 20 KN/m or more, and having a type A durometer hardness at 25° C. of from 30 to 100, and a spring using the same.

公开(公告)号：US20230304556A1

公开(公告)日：2023-09-28

申请号：US18076717

申请日：2022-12-07

Applicant: NHK SPRING CO., LTD.

Inventor： Shinichi NISHIZAWA ,  Daisuke IBANO ,  Tsuyoshi MATSUDA ,  Norifumi ARISAKA ,  Shun MURAMATSU ,  Chihiro ITO ,  Takuto SUZUKI ,  Masatake KINOSHITA ,  Asuka KAWASAKI

IPC: F16F1/04 ,  C09D175/04

CPC classification number: F16F1/042 ,  C09D175/04

Abstract: A coil spring includes a wire rod and an elastic coat provided on the wire rod. The coil spring includes a coil section including a plurality of coil portions. The wire rod includes a round cross-sectional portion, a cross-section varying portion, and a rectangular cross-sectional portion along the longitudinal direction of the wire rod. The cross section of the rectangular cross-sectional portion is substantially square and has a first plane and a second plane. The first plane and the second plane oppose each other in the coil section. The elastic coat is provided on at least one of the first plane and the second plane. The elastic coat is continuous from the round cross-sectional portion to the cross-sectional variation portion and the rectangular cross-sectional portion.

公开(公告)号：US20230304557A1

公开(公告)日：2023-09-28

申请号：US17703295

申请日：2022-03-24

Applicant: NHK SPRING CO., LTD.

Inventor： Shinichi NISHIZAWA ,  Daisuke IBANO ,  Tsuyoshi MATSUDA ,  Norifumi ARISAKA ,  Shun MURAMATSU ,  Chihiro ITO ,  Takuto SUZUKI ,  Masatake KINOSHITA ,  Asuka KAWASAKI

IPC: F16F1/04 ,  F16F1/06

CPC classification number: F16F1/043 ,  F16F1/06 ,  F16F2238/026 ,  F16F2230/00 ,  B60G11/14

Abstract: A coil spring includes a wire rod and an elastic coat provided on the wire rod. The coil spring includes a coil section including a plurality of coil portions. The wire rod includes a round cross-sectional portion, a cross-section varying portion, and a rectangular cross-sectional portion along the longitudinal direction of the wire rod. The cross section of the rectangular cross-sectional portion is substantially square and has a first plane and a second plane. The first plane and the second plane oppose each other in the coil section. The elastic coat is provided on at least one of the first plane and the second plane. The elastic coat is continuous from the round cross-sectional portion to the cross-sectional variation portion and the rectangular cross-sectional portion.

公开(公告)号：US20250088052A1

公开(公告)日：2025-03-13

申请号：US18292630

申请日：2022-04-22

Applicant: NHK SPRING CO., LTD.

Inventor： Youhei KAMEDA ,  Tsuyoshi MATSUDA ,  Yoshikazu MINEDA ,  Soichi NAKAYAMA

IPC: H02K1/28

Abstract: This rotor includes a rotor shaft, a permanent magnet held at an outer periphery of the rotor shaft, and a magnet reinforcement tube formed in a cylindrical shape and covering the permanent magnet from an outer peripheral side of the permanent magnet. The magnet reinforcement tube includes plural layers layered in a radial direction, and has plural fiber sheets wound individually for each layer, and each fiber sheet being solidified with resin.

公开(公告)号：US20230304558A1

公开(公告)日：2023-09-28

申请号：US18321447

申请日：2023-05-22

Applicant: NHK SPRING CO., LTD.

Inventor： Shinichi NISHIZAWA ,  Daisuke IBANO ,  Tsuyoshi MATSUDA ,  Norifumi ARISAKA ,  Shun MURAMATSU ,  Chihiro ITO ,  Takuto SUZUKI ,  Masatake KINOSHITA ,  Asuka KAWASAKI

IPC: F16F1/04 ,  F16F1/02

CPC classification number: F16F1/043 ,  F16F1/024

Abstract: A coil spring includes a wire rod and an elastic coat provided on the wire rod. The coil spring includes a coil section including a plurality of coil portions. The wire rod includes a round cross-sectional portion, a cross-section varying portion, and a rectangular cross-sectional portion along the longitudinal direction of the wire rod. The cross section of the rectangular cross-sectional portion is substantially square and has a first plane and a second plane. The first plane and the second plane oppose each other in the coil section. The elastic coat is provided on at least one of the first plane and the second plane. The elastic coat is continuous from the round cross-sectional portion to the cross-sectional variation portion and the rectangular cross-sectional portion.