Patent ID: 7740429

Claim:
A double locking apparatus for use with a roll-off vehicle usable for transporting detachable containers comprising: A. a housing means securable with respect to a transport vehicle for facilitating retaining of containers with respect thereto: B. a first locking arm means pivotally movably mounted with respect to said housing means and being pivotally movable between a first locking position and a first retracted position for facilitating detachable securement of a container with respect to a roll-off vehicle; C. a second locking arm means pivotally movably mounted with respect to said housing means at a position spatially disposed from said first locking arm means, said second locking arm means being pivotally movable between a second locking position and a second retracted position for further facilitating detachable securement of a container with respect to a roll-off vehicle; D. a movable drive link means movably attached with respect to and extending between said first locking arm means and said second locking arm means for powering movement thereof, said movable drive link means including: (1) a first arm engagement section being movably engaged with respect to said first locking arm means for facilitating urging movement thereof between said first locking position and said first retracted position; (2) a second arm engagement section spatially disposed from said first arm engagement section and being movably engaged with respect to said second locking arm means for facilitating urging movement thereof between said second locking position and said second retracted position; and E. a drive means attached with respect to a roll-off vehicle and being longitudinally extensible and retractable, said drive means also being movably attached with respect to said movable drive link means for powering movement thereof and for urging movement of said first locking arm means from said first locking position toward said first retracted position and from said first retracted position toward said first locking position, and for urging movement of said second locking arm means from said second locking position toward said second retracted position and from said second retracted position toward said second locking position, the movable attachment between said drive means and said movable drive link means and between said first arm engagement section and said first locking arm means and between said second arm engagement section and said second locking arm means facilitating movement of said first locking arm means to said first locking position despite any inability of said second locking arm means to fully move to said second locking position and facilitating movement of said second locking arm means to said second locking position despite any inability of said first locking arm means to fully move to said first locking position.