Underrun guard for road vehicles

B - Operations – Transporting – 60 – R

Patent

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Details

B60R 19/56 (2006.01) B60R 19/26 (2006.01)

Patent

CA 2240821

An underrun guard for a road transport vehicle is disclosed comprising a beam intended to be supported across the rear of the vehicle by support means which yield under a force which would otherwise be likely to cause damage to the vehicle. The support means comprises at least one first plate for attachment to the beam and at least one second plate for attachment to the vehicle, and clamping means for clamping the plates together while permitting relative sliding movement between said first and second plates when a substantial force is applied to the beam. A high friction element may be sandwiched between the first and second plates to increase the sliding friction generated on relative movement of the plates, thereby increasing the reaction force restraining such movement.

Dispositif de protection arrière se fixant sous un véhicule de transport routier. Ce dispositif consiste en une poutre destinée à être supportée à l'arrière du véhicule par des dispositifs d'appui qui fléchissent sous une force donnée, sans quoi cette force pourrait endommager le véhicule. Les dispositifs d'appui comprennent au moins une première plaque se fixant à la poutre et au moins une deuxième plaque se fixant au véhicule, ainsi que des dispositifs servant à serrer les deux plaques l'une contre l'autre tout en leur permettant de glisser l'une par rapport à l'autre lorsqu'une force importante est appliquée à la poutre. Un élément à coefficient de friction élevé peut être fixé entre les première et deuxième plaques pour accroître le frottement de glissement généré par le mouvement relatif des plaques, augmentant ainsi la force de réaction qui empêche un tel mouvement.

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