The present invention relates generally to the field of retrieval of sunken objects and also to the field of securing and lifting devices. Attachment of lifting lines to sunken objects using remote controlled manipulators is one of the most difficult tasks involved in recovering objects from the deep ocean. This is often a very difficult task if the object is partially buried in mud or sand. The present invention was developed to assist in inserting slings under partially buried objects. The present invention is particularly useful for inserting a lift sling under objects resting in sand or mud. Features of the sling include a lightweight jetting tube supported and guided by a special sling holder assembly. The sling is attached to the nozzle end of the jetting tube and is pulled under the object as the jetting tube is advanced. Jetting water is provided by a vehicle mounted pump through a hose with a manipulator operable quick disconnect fitting. Once the sling has been drawn under the object to be recovered, a rope attached at one of its ends to the sling holder assembly can be looped over the object and through an eye in the opposite end of the lift sling to cinch or choke up the sling around the object.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Lift Sling Emplacement Device


    Contributors:
    D. J. Hackman (author) / D. W. Caudy (author) / R. L. Wernli (author) / C. S. Albro (author)

    Publication date :

    1981


    Size :

    14 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




    Lift sling of vacuum adsorption

    GWON TAE YEONG | European Patent Office | 2017

    Free access

    Sling bars, methods for attaching a subject sling to sling bars, and lift systems using sling bars

    CONEJO CASTAÑO ALEJANDRO NOE / REINKE CHRISTIAN H / O'NEAL TODD P et al. | European Patent Office | 2023

    Free access

    Transfer and lift device for sling cutting

    European Patent Office | 2022

    Free access

    SLING BARS, METHODS FOR ATTACHING A SUBJECT SLING TO SLING BARS, AND LIFT SYSTEMS USING SLING BARS

    CONEJO CASTAÑO ALEJANDRO NOE / REINKE CHRISTIAN H / O'NEAL TODD P et al. | European Patent Office | 2021

    Free access

    Transfer and lift device for sling cutting

    BAEK SEUNG MIN | European Patent Office | 2022

    Free access