Invention Grant
- Patent Title: Hydraulic control apparatus
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Application No.: US16700226Application Date: 2019-12-02
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Publication No.: US11268621B2Publication Date: 2022-03-08
- Inventor: Kunio Kimpara , Masayuki Nojo , Mamoru Murakami , Hiroaki Kosugi
- Applicant: Nidec Tosok Corporation , Subaru Corporation
- Applicant Address: JP Zama; JP Tokyo
- Assignee: Nidec Tosok Corporation,Subaru Corporation
- Current Assignee: Nidec Tosok Corporation,Subaru Corporation
- Current Assignee Address: JP Zama; JP Tokyo
- Agency: Keating & Bennett
- Priority: JPJP2018-227982 20181205
- Main IPC: F16K17/04
- IPC: F16K17/04 ; F16K15/18 ; F15B1/26 ; F16K11/07 ; F01M1/16

Abstract:
A hydraulic control apparatus includes an output-side oil passage into which oil from a first oil passage and oil from a second oil passage flow, and a pressure regulating check valve regulating a hydraulic pressure in the second oil passage. The pressure regulating check valve includes first and second elastic portions housed in a spool hole between a valve body and a bottom of the spool hole. A natural length of the second elastic portion is shorter than a distance between the valve body and the bottom when the valve body closes an inflow hole. The second elastic portion applies an elastic force to the valve body in a state in which the valve body opens the inflow hole.
Public/Granted literature
- US20200182363A1 HYDRAULIC CONTROL APPARATUS Public/Granted day:2020-06-11
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