Abstract: A connection device in which a hook member is carried in a casing member for both rotation about an axis of the hook member and movement longitudinally of the hook member inwardly and outwardly relative the casing. An actuating member is provided to displace the hook member simultaneously for rotation and axial movement. The connection device is particularly adapted to be used as an element of a releasable joint for modular frame construction of frame members having T-shaped longitudinally extending slots. With the hook member in an unlocked position, the hook member extends from one frame member carrying the hook member and permits passage into a slot of another frame member with the hook member in the slot in the unlocked position, the hook member may be moved to a locked position by rotation and withdrawal of the hook member relative the frame member by which it is carried so as to catch the head of the hook member in the T-shaped slot and draw the two frame members together.

Abstract: A connection device in which a hook member is carried in a casing member for both rotation about an axis of the hook member and movement longitudinally of the hook member inwardly and outwardly relative the casing. An actuating member is provided to displace the hook member simultaneously for rotation and axial movement. The connection device is particularly adapted to be used as an element of a releasable joint for modular frame construction of frame members having T-shaped longitudinally extending slots. With the hook member in an unlocked position, the hook member extends from one frame member carrying the hook member and permits passage into a slot of another frame member with the hook member in the slot in the unlocked position, the hook member may be moved to a locked position by rotation and withdrawal of the hook member relative the frame member by which it is carried so as to catch the head of the hook member in the T-shaped slot and draw the two frame members together.