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US 3,944,272 AGranted
Cargo container spreader with articulated structure for skewing and tilting
AssigneeMidland-Ross Corporation
InventorJack E. Fathauer
Life of this patent
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Abstract
Disclosed herein is a cargo container spreader arranged as an articulated assembly of which a main frame or spreader portions supporting a cargo container may be shifted in substantially universal angular movements relative to a spreader supporting facility, such as a crane, through suspension of the main frame on a pair of spaced upright subframes with respect to which the main frame is horizontally movable in its transverse direction. Skewing of the main frame occurs when it is shifted relative to the subframes in opposite transverse directions.
Claims9
In combination with a crane, a cargo container spreader comprising:
- a main frame having longitudinal and transverse axis and means for connecting with a cargo container positioned underneath the frame;
- a pair of normally upright subframes having means adapting them for separate supported pendant relation with said crane;
- portions of each subframe and said main frame being pivotally connected to define separate hinge means, each hinge means attaching one of said subframes to said main frame along one of two axes parallel to, and spaced at opposite sides of, said transverse axis, said hinge means being constructed for relative movement of the main frame and each subframe lengthwise of the respective hinge axis;
- and
- first power means operatively connected to each subframe and said main frame for reacting therebetween to effect said relative movement of the respective assembly and the main frame;
- and
- separate vertically adjustable means for pendantly connecting each subframe with said crane, said adjustable means being independently adjustable to raise and lower each end of the spreader relative to its other end.
4 more elements
Dependencies are inferred from the claim text.