Patent ID: 6945357

Claim:
A load transfer device comprising: first and second spaced-apart rotary members and an axle extending continuously therebetween along a common axis of rotation to provide support thereof about the common axis of rotation, each rotary member having a hub and at least one recess formed in its periphery; a slipper member extending between the rotary members and defining therewith a space adapted to receive an elongate support element along which the device is adapted to travel, in use; an attachment for attaching a load to the device; an access that enables said elongate element to be introduced into or removed from said space so as to allow the device to be attached to or detached from the elongate element; said access including at least one notch provided in the hub portion of each rotary member; said attachment including a moveable link assembly operable between: (a) a blocking position in which it prevents access to the notches by said elongate support element, and (b) a release position in which it allows access to the notches by said elongate support element without movement of the rotary members away from each other on the axle along the common axis, whereby said slipper member is enabled to pass over the elongate support element to cover or expose said space according to whether the device is being attached to or released from the elongate support element; and said attachment including at least a first attachment member having a first connecting eye for attaching a load to the device and wherein said moveable link assembly includes an obstructor for obstructing said connecting eye when the moveable link assembly is in the release position in which it allows access to said notches by said elongate support element.