Quick release dovetail lift coupling

Details Quick release dovetail lift coupling Quick release dovetail lift coupling

2003-04-04

2009-08-18

Chin, Paul T (Department: 3652)

Handling: hand and hoist-line implements

Grapple

Lewises

C294S093000

Reexamination Certificate

active

07575262

ABSTRACT:
A generally X-shaped lift coupling for use with a conventional dovetail socket. One leg of the X-shaped lift coupling slides axially in a keyway in the other leg between a position where the lower end of the sliding leg is engaged with an angularly extending wall of the dovetail socket, and a position where the sliding leg is fully disengaged from the dovetail socket. A retainer holds the slidable leg in assembled relationship with the fixed leg. At least the fixed leg includes a lifting eye for engagement by a lifting member. The application of a lifting force to the lifting eye causes the lower ends of the legs to wedgedly engage the dovetail socket to lock the lift coupling to the dovetail socket. When the slidable leg is also provided with a lifting eye, the two eyes are generally in registry when the slidable leg is fully engaged with the dovetail socket. Insertion of a lifting member through both eyes locks the two legs together in an assembled configuration.

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