Patent ID: 8438784

Claim:
A cargo roll up door opening system, the system comprising: a roll up cargo door providing access to a cargo enclosed area of a cargo vehicle; an overhead door opening system comprising: a drive motor, a linear motion controlling mechanism in operational communication with the drive motor; a opener linkage arm linking the roll up cargo door and the linear motion controlling mechanism together in operational communication; a door opener carriage assembly comprising a release control element providing a removably engaging coupling between the roll up cargo door and the linear motion controlling mechanism; a linkage arm bracket attached to the roll up cargo door; a slip linkage interface provided between the linear motion controlling mechanism and the linkage arm bracket, wherein the slip linkage interface allows the opener linkage arm to move along the slip linkage independent of the roll up cargo door, and engaging to move the roll up cargo door when the opener linkage arm contacts an engagement position of the slip linkage; a linkage biasing member biasing the opener linkage arm towards the engagement position of the slip linkage; and a release mechanism operationally located external to the cargo enclosed area and in operational engagement with the disengaging linkage wherein the user can operate the release mechanism from outside the cargo enclosed area causing the disengaging linkage to disengage the coupling between the roll up cargo door and the linear motion controlling mechanism.