Invention Application
- Patent Title: VANE PUMP
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Application No.: US17600566Application Date: 2020-03-16
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Publication No.: US20220170459A1Publication Date: 2022-06-02
- Inventor: Masamichi SUGIHARA
- Applicant: KYB Corporation
- Applicant Address: JP Tokyo
- Assignee: KYB Corporation
- Current Assignee: KYB Corporation
- Current Assignee Address: JP Tokyo
- Priority: JP2019-078491 20190417
- International Application: PCT/JP2020/011467 WO 20200316
- Main IPC: F04C2/344
- IPC: F04C2/344

Abstract:
A vane pump includes: pump chambers formed by a rotor, a cam ring, and vanes; a first suction port that guides working fluid guided by a suction passage to the pump chambers; a second suction port that guides the working fluid guided from the suction passage through a communication passage to the pump chambers; and a return passage to which excessive fluid of the working fluid discharged from the pump chambers is guided. The return passage has: a body-internal passage through which the excessive fluid flows along an axis direction at an outer side of the cam ring in a radial direction; and a turning passage that reverses the excessive fluid guided through the body-internal passage towards the second suction port.
Public/Granted literature
- US11959482B2 Vane pump Public/Granted day:2024-04-16
Information query
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