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公开(公告)号:US11339884B2
公开(公告)日:2022-05-24
申请号:US16637608
申请日:2018-12-03
Applicant: KYB Corporation
Inventor: Takeshi Terao , Atsushi Fujii , Nobuyoshi Yoshida
Abstract: A valve device includes a relief valve configured to be opened when a pressure in a fluid pressure circuit reaches a predetermined pressure and to relieve a working fluid, a tank passage connected to a tank, a main relief passage connecting the relief valve and the tank passage, and a sub relief passage branching from the main relief passage and connected to the tank passage separately from the main relief passage.