In one preferred form there is provided an accessory (28) for a shank type lifting hook (30). The accessory (28) comprises a mounting portion (32) for receiving the shank (34) of the lifting hook (30). An actuator mechanism (36) is provided for being operated to 5 limit movement of a safety gate (38) to provide a number of operating conditions (58). The operating conditions (58) include a locked condition (40) in which the safety gate (38) is secured in a closed condition (42) so as to extend across the opening of the hook portion (46) of the lifting hook (30)so that the hook portion (46) is able to securely hold a lifting load. Fig.4 Fig.5 28 coo co coo coo "t CD co


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    Title :

    High tonnage lifting hooks


    Contributors:
    DINSE JOHN (author)

    Publication date :

    2018-01-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B66C Krane , CRANES / E21B EARTH OR ROCK DRILLING , Erd- oder Gesteinsbohren



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