Roll assist mechanism for tarp systems

B - Operations – Transporting – 65 – H

Patent

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Details

B65H 75/34 (2006.01) B60J 7/08 (2006.01) B60P 7/04 (2006.01)

Patent

CA 2242125

A mechanism for assisting the rolling or unrolling of a tarp on a roll bar over the top opening of a trailer, container or similar structure. The mechanism includes an elongated, C-shaped housing, pulleys mounted at opposite ends of the housing, an elastic cord that is secured to the housing and passes about the pulleys, and a strap attached to the opposite, free end of the elastic cord for engaging an end of the roll bar. The housing, pulleys and cord are arranged so that the cord is extended when the tarp is in the open position, urging the active end of the crank to the closed position during the rolling step. The elastic cord pulls against movement at the active end of the roll bar when the bar is unrolled from the closed position to the open position.

Mécanisme contribuant au roulage et au déroulage d'une bâche sur une barre au-dessus de l'ouverture supérieure d'une remorque, d'un conteneur ou d'une structure similaire. Le mécanisme comprend un boîtier allongé en forme de C, des poulies installées aux extrémités opposées du boîtier, un câble élastique qui est fixé au boîtier et qui passe sur les poulies, et une courroie rattachée à l'extrémité opposée et libre du câble élastique afin de retenir une extrémité de la barre. Le boîtier, les poulies et le câble sont disposés de manière que le câble soit en extension lorsque la bâche est ouverte, pour forcer l'extrémité active de la manivelle en position fermée pendant le roulage. Le câble élastique s'oppose au déplacement de l'extrémité active de la barre lorsque cette dernière est déroulée de la position de fermeture vers la position d'ouverture.

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