A first case accommodating a first check valve of a switching valve switching a flow of hydraulic fluid to one of a first chamber and a second chamber of a cylinder device, an inside of which is segmented into the first chamber and the second chamber by a piston, and a second case which is stacked on the first case and in which a first actuation valve of the switching valve is accommodated to be displaced in a direction of stacking the first case are provided. A first valve chamber, accommodating the first actuation valve, of the second case has a pressure receiving surface on which pressure of hydraulic fluid that acts on the first valve chamber acts toward the first case.


    Access

    Download


    Export, share and cite



    Title :

    PUMP DEVICE AND HYDRAULIC ACTUATOR


    Additional title:

    DISPOSITIF DE POMPAGE ET ACTIONNEUR HYDRAULIQUE


    Contributors:

    Publication date :

    2015-09-25


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    F04B Verdrängerkraft- und Verdrängerarbeitsmaschinen für Flüssigkeiten , POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS / B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING / B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last / F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein / F15C Strömungsmittelbetriebene Schaltungselemente, besonders für Rechen- oder Steuerzwecke , FLUID-CIRCUIT ELEMENTS PREDOMINANTLY USED FOR COMPUTING OR CONTROL PURPOSES



    PUMP DEVICE AND HYDRAULIC ACTUATOR

    TSUTSUI HAYATO / TANAKA NOBUAKI / UEKI TAKESHI | European Patent Office | 2015

    Free access

    PUMP DEVICE AND HYDRAULIC ACTUATOR

    TSUTSUI HAYATO / SADAKATA KAZUHIKO / KAGAWA ATSUSHI | European Patent Office | 2015

    Free access

    PUMP DEVICE AND HYDRAULIC ACTUATOR

    TSUTSUI HAYATO / HORIE SHINYA / SADAKATA KAZUHIKO et al. | European Patent Office | 2015

    Free access

    Pump apparatus and hydraulic actuator

    TSUTSUI HAYATO / SADAKATA KAZUHIKO / KAGAWA ATSUSHI | European Patent Office | 2018

    Free access

    Pump apparatus and hydraulic actuator

    KAZUHIKO SADAKATA / HAYATO TSUTSUI / ATSUSHI KAGAWA | European Patent Office | 2015

    Free access