Patent ID: 7728244

Claim:
A mail sorting and sequencing system, comprising at least one DPP unit for forming groups of mail items and for sorting and sequencing mail items of the following types of mail: a first type of mail items; and a second type of mail items substantially more difficult to process than said first type of mail items; said at least one DPP unit comprising: a first conveyor system a number of trucks travelling along a path; at least one feed unit communicating with said first conveyor system, said feed unit receiving one of said first and second type of said mail items and loading one of said first and second type of said mail items into said trucks; and at least one accumulating device cooperating with said first conveyor system to receive one of said first and second type of said mail items released by said trucks; said accumulating device comprises a second conveyor system located beneath an unloading portion of said path of said first conveyor system; one of said trucks engages said unloading portion to run over said accumulating device; and said one truck has an unloading mechanism enabling release of one of said first and second type of said mail items from said one of said trucks and wherein each of said trucks defines a number of pockets each of which communicates externally of said truck through at least one loading opening and is bounded thereof by an unloading hatch movable between a closed position and an open position enabling said mail items to slide by force of gravity out of said pockets.