08-10-2020 дата публикации
Номер: US20200318301A1
Принадлежит:
A roadway or pavement sweeper with multiple sweeping modes for the removal of debris from a swept surface may, in some embodiments, include a sweeper vehicle having a pair of side-brooms independently movable between a retracted and extended position for sweeping debris into an area therebetween and at least one material-transfer broom to sweep a portion of the debris accumulated between the side-brooms as the vehicle moves in its direction of travel. A fan-driven suction-inlet may be provided at or adjacent each side of the vehicle. The at least one material-transfer broom may rotate in a first or other direction to transfer debris for entrainment into a selected suction-inlet for transfer to a debris hopper. Other embodiments are also described. 110-. (canceled)11. A sweeper vehicle system for moving in a direction of travel to remove debris from a roadway surface being swept , comprising:at least a first and a second side-broom mounted to the vehicle, each side-broom movable between a respective retracted position and an extended position, each of the side-brooms having a motor for rotating its respective side-broom in a direction of rotation to sweep at least a portion of the debris on the surface being swept into an area between the first and second side-brooms, the first side-broom in its retracted position and the second side-broom in its extended position;a first suction-inlet at or adjacent a first side of the vehicle and a second suction-inlet at or adjacent a second side of the vehicle, each suction-inlet connected through a respective air-flow valve to a debris hopper, each air-flow valve operable between a substantially open position and a substantially closed position, the air-flow valve for the second suction-inlet in its substantially open position;a fan for creating an air flow through the debris hopper and at least one of the suction-inlets when the valve associated with the at least one suction-inlet is in its substantially open position;a primary ...
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