公开(公告)号：US20210131515A1

公开(公告)日：2021-05-06

申请号：US16491754

申请日：2018-03-08

Applicant: NHK SPRING Co., Ltd.

Inventor： Hideaki SAKAI

IPC: F16F1/32

Abstract: The disc spring is a disc spring for being fitted on a rotary shaft and includes: an annular body portion; a claw portion protruding inward in a radial direction from an inner peripheral edge of the body portion, wherein the claw portion gradually extends toward one side in an axial direction as it goes inward in the radial direction, and at least a tip part of the claw portion is provided with a hole.

公开(公告)号：US20200011392A1

公开(公告)日：2020-01-09

申请号：US16491018

申请日：2018-03-08

Applicant: NHK SPRING Co., Ltd.

Inventor： Hideaki SAKAI

IPC: F16F1/32

Abstract: The wave spring includes an annular body formed by alternately connecting a convex portion and a concave portion in a circumferential direction, wherein the annular body is provided with a notch.

公开(公告)号：US20210003185A1

公开(公告)日：2021-01-07

申请号：US16967252

申请日：2019-02-22

Applicant: NHK SPRING Co., Ltd.

Inventor： Hideaki SAKAI ,  Atsushi YONEOKA

IPC: F16F1/32 ,  F16F1/02

Abstract: A wave spring includes an annular body in which crests and valleys are alternately and continuously formed in a circumferential direction. At least a portion of the annular body in the circumferential direction is a joined portion. The joined portion of the annular body is a flat portion extending in a plane orthogonal to a center axis of the annular body.