• Patent Title: Valve apparatus and fluid pressure system equipped therewith
  • Application No.: US16317872
    Application Date: 2017-07-22
  • Publication No.: US11428333B2
    Publication Date: 2022-08-30
  • Inventor: Shuhei OrimotoKoichi Kiyasu
  • Applicant: Caterpillar SARL
  • Applicant Address: CH Geneva
  • Assignee: Caterpillar SARL
  • Current Assignee: Caterpillar SARL
  • Current Assignee Address: CH Geneva
  • Priority: JPJP2016-148843 20160728
  • International Application: PCT/EP2017/068562 WO 20170722
  • International Announcement: WO2018/019741 WO 20180201
  • Main IPC: F16K11/07
  • IPC: F16K11/07 E02F9/22
Valve apparatus and fluid pressure system equipped therewith
Abstract:
It is to provide a control valve that can make the valve body smaller and the structure simplified and the hydraulic pressure system equipped therewith. The plural number of parallel feeder oil paths that are respectively connected to the plural number of pumps and are not cut off by displacement of spools is provided in the valve body in a linearly through all spool holes. For each section, a connection oil path is provided to connect any one side of parallel feeder oil paths to the bridge circuit B of the internal spools. Parallel feeder oil paths can be positioned in a simple shape, but also, just by properly providing connection oil paths, without depending on each section belonging to any of pump systems, positioning of section can be freely done within the valve body. Making the valve body smaller and the structure simplification can be executed.
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