Overhead truck door opening and closing mechanism

A roll-up overhead door mechanism in combination with a cargo truck that has a cargo hold;

• the truck comprising:
• a cargo truck having a cargo hold;
• the cargo truck having a door frame with parallel vertical frame members and an upper cross frame member that is joined to the vertical frame members to define two upper corners;
• a roll-up overhead door having a lower portion;
• the roll-up overhead door being movable between open and closed positions with respect to the cargo hold of the truck;
• an opening and closing mechanism for opening and closing the roll-up overhead door;
• the opening and closing mechanism having a guide aligned with one of the vertical frame members;
• and a loop having a portion passing over the guide in a manner that allows the loop to be moved with respect to the guide;
• the loop secured to the lower portion of the door with a bracket;
• the loop having first and second portions extending down from the guide;
• both the first and second portions being disposed along and outside the one of the vertical frame members such that they are readily accessible for manipulation by a person opening or closing the roll-up overhead door;
• and
• at least one of the first and second portions adapted to raise the door from its closed position towards its open position when the portion is pulled down toward the ground.