Overhead truck door opening and closing mechanism
AssigneeBarton Family Limited Partnership
InventorRobert G. Barton
Life of this patent
Estimating the term…
Abstract
An opening and closing mechanism for a roll-up cargo door for a truck is intended to decrease injuries to the people who load and unload items from box trucks and semi-trailers. The mechanism allows the user to open and close the overhead roll-up door of these trucks while standing firmly and safely on the ground at the rear corner of the truck. The door opening and closing mechanism is in the form of a loop of material that is attached to a lower portion of the roll-up door and a guide disposed near the top of the door frame. The loop includes an indicator that shows the user which side of the loop is to be pulled down depending on the position of the door. The mechanism can be retrofit onto existing truck frames.
Claims20
An opening and closing mechanism that allows a roll-up overhead door to be opened and closed wherein the door includes a lower portion when closed;
- the mechanism comprising:
- a guide;
- 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 adapted to be secured to the lower portion of the door with the loop on the outside of the door.
A roll-up overhead door mechanism for a cargo truck with a cargo hold;
- the 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;
- the roll-up overhead door comprising:
- a roll-up overhead door having a lower portion;
- and
- an opening and closing mechanism that allows the roll-up overhead door on the truck to be opened and closed;
- the opening and closing mechanism having a guide disposed at one of the two upper corners of the door frame;
- 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 and disposed on the outside of the door.
Dependencies are inferred from the claim text.