A pump apparatus includes: a pump that ejects a hydraulic fluid; and a selector valve that switches a direction of a flow of the hydraulic fluid to be supplied to one of a first chamber and a second chamber into which a cylinder apparatus is internally partitioned by a piston, the first chamber extending during a stroke of the piston for extending the cylinder apparatus, and the second chamber extending during a stroke of the piston for shortening the cylinder apparatus, and the selective valve has, at a channel connected to the second chamber, an orifice that is narrower than a channel connected to the first chamber.


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    Title :

    Pump apparatus and hydraulic actuator


    Contributors:

    Publication date :

    2015-09-30


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING



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