Pipe handling apparatus

Details Pipe handling apparatus Pipe handling apparatus

1979-05-11

1980-11-25

Marbert, James B.

Handling: hand and hoist-line implements

Grapple

Expanding

294 8625, E21C 1900

Patent

active

042354692

ABSTRACT:
An apparatus for insertion into the interior of large diameter pipe or tubing which engages inner portions of the pipe so that the pipe may be lifted and moved. Slip assemblies are wedged into engagement with inner portions of the pipe. The amount of wedging may be varied with a hydraulic cylinder or other suitable power source. Pipe guide members are provided to insure centering of the apparatus within the pipe.

REFERENCES:
patent: 2231206 (1942-01-01), Pollard et al.
patent: 2523972 (1950-09-01), Sharratt et al.
patent: 2624610 (1953-01-01), Murphy
patent: 2648563 (1953-08-01), Hall
patent: 2687324 (1954-08-01), Grunsky et al.
patent: 2939739 (1960-06-01), Grunsky
patent: 3265431 (1966-08-01), Burner
patent: 3638989 (1972-02-01), Sandquist
patent: 3709546 (1973-01-01), Vaughan
patent: 3801148 (1974-04-01), Rosgon et al.

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