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公开(公告)号：US20180043415A1
公开(公告)日：2018-02-15
申请号：US15550157
申请日：2016-04-26
发明人： Hirokazu OCHIAI
摘要： A washer that includes: an inner peripheral face formed in an arc shape; an outer peripheral face formed in an arc shape concentric with the inner peripheral face on a radially outer side of the inner peripheral face; and outer peripheral cut-out portions (such as a left outer peripheral cut-out portion and a right outer peripheral cut-out portion) formed at positions of the outer peripheral face corresponding to end portions (a first end portion and a second end portion) of the inner peripheral face to have the same shapes as outside shapes of the corresponding end portions of the inner peripheral face.
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公开(公告)号：US20180172061A1
公开(公告)日：2018-06-21
申请号：US15735774
申请日：2016-04-26
发明人： Hirokazu OCHIAI
摘要： A method of manufacturing a washer capable of improving a material yield is provided. The method includes: a preparation step of preparing a longitudinal member which includes an upper corrugated portion and a lower corrugated portion including crest portions formed on at least one of an upper surface and a lower surface and valley portions continuous to the crest portions in the right-left direction; and a deformation step of deforming the longitudinal member such that the upper surface and the lower surface are arcuate as viewed in the direction from the front to the rear.
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公开(公告)号：US20180169736A1
公开(公告)日：2018-06-21
申请号：US15737071
申请日：2016-10-21
发明人： Hirokazu OCHIAI
CPC分类号： B21D53/20 , B21D11/10 , B21D11/20 , B21D13/00 , B21D28/06 , F16B43/00 , F16C17/04 , F16C33/14
摘要： A method of manufacturing a washer capable of improving a material yield is provided. The method includes: a preparation step of preparing a longitudinal member which includes an upper crest portion and a lower crest portion formed on at least one of an upper surface and a lower surface of the longitudinal member, and an upper valley portion and a lower valley portion continuous to the upper crest portion and the rower crest portion in the right-left direction, respectively, the upper valley portion and the lower valley portion provided with projections, respectively; and a deformation step of deforming the longitudinal member such that the upper surface and the lower surface are arcuate as viewed in the direction from the front to the rear.
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