ANTI-TWIST DEVICE FOR A FOLDABLE COUPLER, AND FOLDABLE COUPLER COMPRISING AN ANTI-TWIST DEVICE

Patentradars sammanfattning

Dellner Couplers AB's invention addresses the problem of coupler shank twisting (sagging/rotation about the longitudinal axis) in foldable railway couplers when the front shank portion is folded for stowing. The anti-twist device comprises an attachment member mountable on either the rear shank portion or a vertical support, a blocking assembly with a movable blocking element, and a control member that drives the blocking element between non-blocking and blocking positions. A key novelty is that the device is actively engaged only during folding/stowing—automatically deactivating when the coupler returns to the aligned, locked state—thereby preventing interference with normal coupler pivoting and twist during track operation. An activation device linked to the joint lock or foldable joint automatically triggers the anti-twist device upon joint lock release or front shank pivoting.

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