Automatic sling lock

Details Automatic sling lock Automatic sling lock

E - Fixed Constructions

05

B

24/11.1

E05B 65/00 (2006.01)

Patent

CA 2007938

ABSTRACT OF THE DISCLOSURE A lock, capable of being automatically bolted and released, is disclosed which functions as a knot running along a loop made by a sling wound around a load to be dragged. The lock is made up of a keeper and of a bolt capable of fitting into it, the bolt having a radial lock face. There is provided a claw on the keeper, which can move between a retracted position to allow insertion of the bolt in the keeper and an active position where it locks with the lock face, after the bolt has been slid in the keeper. In the active position, a spring device presses on the claw to draw the bolt fully in the keeper. The keeper is also provided with a pair of pawls which are made to move between a retracted position free of the bolt, and an active position upstream of the lock face when the bolt is slid in the keeper. A damper device acts on the pawls for retarding their movement to retracted position when the sling, to which the bolt is fastened, is abruptly pulled, causing the pawls to butt against the lock face of the bolt and preventing its removal from the keeper so that the load may safely be dragged away, the noose around it being then safely tightened.

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