Patent ID: 7367091

Claim:
An attachment device for attaching a sling to a hoist by engaging with an attachment formation on the hoist, which attachment formation comprises a body part and enlarged head, the attachment device being adapted to have a sling-connecting element attached to it and comprising first and second elements disposed in face to face relationship with one another and moveable relative to one another between first and second positions; the first element comprising a slot having a first portion through which the head of the attachment formation will pass and a second portion extending from the first portion and through which the body of the attachment portion can pass but through which the head will not pass; the second element having an opening through which the head of the attachment formation can pass and which aligns with the first portion of the slot in the first element when the first and second elements are in their first relative position and which aligns with the second portion of the slot when the first and second elements are in their second relative position, in which position the second element blocks the first portion of the slot in the first element; the first and second elements having apertures which are able to receive a retaining element when the first and second elements are in their second relative position to hold them in such position, the apertures registering with one another when the elements are in their second relative position but do not register when the elements are in their first relative position.