Railways – Sledways
Patent
1992-08-07
1993-05-18
Le, Mark T.
Railways
Sledways
104165, 104212, 104222, B61B 1300
Patent
active
052111148
ABSTRACT:
A pulling system for pulling or moving a large object, such as pulling components of an offshore oil/gas production platform onto an adjacent barge that is subsequently transported to the installation site. This pulling system incorporates a single elongated rod that is connected between the object to be moved and a puller unit that pulls the object along a track. During operation, the puller unit causes a gripping unit to grip the rod so that the puller unit can move the object. Afterwards, the gripping unit releases its engagement of the rod, repositions itself with respect to the rod, and regrips the rod so that movement of the object may again be initiated by the puller unit.
REFERENCES:
patent: 4007915 (1977-02-01), Chambers
patent: 4014266 (1977-03-01), Naslund et al.
patent: 5150656 (1992-09-01), Lobb et al.
Campbell Edwin A. B. W.
Chaplin Paul D.
Gibson Paul F.
Hyde Brian D.
Taylor Michael J.
Edwards Robert J.
Hoelter Michael L.
John Gibson (Lifting Gear) Agencies Ltd.
Le Mark T.
McDermott International Inc.
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