Invention Grant
- Patent Title: Vane pump
-
Application No.: US17600566Application Date: 2020-03-16
-
Publication No.: US11959482B2Publication Date: 2024-04-16
- Inventor: Masamichi Sugihara
- Applicant: KYB Corporation
- Applicant Address: JP Tokyo
- Assignee: KYB CORPORATION
- Current Assignee: KYB CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Rabin & Berdo, P.C.
- Priority: JP 19078491 2019.04.17
- International Application: PCT/JP2020/011467 2020.03.16
- International Announcement: WO2020/213327A 2020.10.22
- Date entered country: 2021-09-30
- Main IPC: F04C14/26
- IPC: F04C14/26 ; F01C21/08 ; F01C21/10 ; F04C2/344 ; F04C2/356 ; F04C15/06

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
- US20220170459A1 VANE PUMP Public/Granted day:2022-06-02
Information query