公开(公告)号：US11940031B2

公开(公告)日：2024-03-26

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 ,  B60G11/14

CPC classification number: F16F1/043 ,  F16F1/06 ,  B60G11/14 ,  B60G2202/12 ,  B60G2206/42 ,  B60G2600/44 ,  B60G2800/162 ,  F16F2230/00 ,  F16F2230/0023 ,  F16F2238/026

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：US20210403702A1

公开(公告)日：2021-12-30

申请号：US17473600

申请日：2021-09-13

Applicant: NHK SPRING CO., LTD.

Inventor： Katsumi Mizuno ,  Asuka Kawasaki

IPC: C08L63/00 ,  C08G59/50 ,  C08K3/013 ,  H05K1/03 ,  H05K1/05

Abstract: According to an embodiment, a thermosetting epoxy resin composition including an epoxy resin, an aromatic amine compound, a boron-phosphorus complex, and a phosphorus compound is provided. The aromatic amine compound is represented by the following general formula (1) (where R1 represents an alkyl group, m represents an integer of 2 or more, n represents an integer of 0 or more, and m and n satisfy m+n≤6, and when n is an integer of 2 or more, a plurality of R1 may be the same as or different from each other).