In one aspect the invention provides a safety lock device, for use with a pump-jack having a gear box and at least one rotating member, the safety lock device comprising an engagement member suitable for securely engaging the rotating member to prevent further substantial rotation of said rotating member and a mounting frame to mount the safety lock device to the gear box. The engagement member may be actuated between a locked position and an unlocked position.


    Access

    Download


    Export, share and cite



    Title :

    Safety lock device for pump-jack


    Contributors:

    Publication date :

    2017-02-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B62C VEHICLES DRAWN BY ANIMALS , Von Tieren gezogene Fahrzeuge / F16D COUPLINGS FOR TRANSMITTING ROTATION , Nicht schaltbare Kupplungen



    Jack lock

    LUDWIG DUANE L | European Patent Office | 2018

    Free access

    JACK WITH HYDRAULIC LOCK

    DRAKE FRANK | European Patent Office | 2024

    Free access

    Pump Jack Pulley

    BLYSHCHYK VYACHESLAV | European Patent Office | 2016

    Free access

    Jack capable of prying automobile lock

    FANG YONG | European Patent Office | 2023

    Free access

    Car lifting jack safety control device and car lifting jack

    CHENG YUANXIONG / LI SHA / CHENG LIBO | European Patent Office | 2021

    Free access