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US 4,068,878 AGranted
Container lift coupling
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorIrving Wilner
Life of this patent
Estimating the term…
Abstract
A twist lock coupling for use in handling cargo containers of the type used n I.S.O. systems. An elongated support bar is inserted and rotated within an attachment fitting of the container. A keeper rotatable on the bar, and receivable on the fitting, includes a transverse recess for locking the bar in an orthogonal position thereto.
Claims10
A twist lock coupling for a hollow lift fitting having a slot therethrough, comprising, in combination:
- a shank member for inserting in the slot and having an elongated shank portion adapted to be connected at one end to a lifting device and having at the other end a pair of opposed segments laterally extending in opposite directions from said shank portion formed to closely fit through the slot when parallelly aligned therewith and to engage the inside of the lift fitting on either side of the slot when orthogonally aligned therewith;
- and
- a locking member rotatably and slidably disposed on said shank portion intermediate the ends and laterally extending in opposite directions from said shank portion and formed to fit in the slot when parallelly aligned therewith, said locking member having a recess formed therein for non-rotatable gravitational engagement with said segments and the fitting when said shank member is inserted in the slot with said segments orthogonally aligned below the slot, thereby locking said shank member in the lift fitting.
A twist lock coupling for a lift fitting, comprising, in combination:
- an elongated shank adapted to be connected at one end to a lifting device and to be inserted from one end into the fitting;
- a support member formed to be received in the fitting when aligned therewith and to engage the fitting when not aligned therewith and secured to the other end of said shank;
- and
- a locking member rotatably and slidably disposed on said shank and formed to be inserted in the lift fitting when aligned therewith, said locking member having a recess formed therein for non-rotatably gravitational engagement with said support member when said support member is engaged and said locking member is received in the fitting, thereby locking said support member in the lift fitting.
1 more element
Dependencies are inferred from the claim text.