Abstract: A positive displacement sorter apparatus and method includes providing a plurality of interconnected slats defining an endless web, an upper run of the web defining a conveying surface. A plurality of pusher shoes are provided, each moving along at least one of the plurality of slats to laterally displace articles on the conveying surface. Each of the pusher shoes includes a diverting portion extending above the conveying surface. The diverting portion includes a diverting surface and a stop surface. The diverting surface contacts an article and laterally displaces that article. A lifting force is applied by the diverting surface to a portion of the article being diverted. The stop surface limits movement of the article relative to the pusher shoe.

Abstract: A positive displacement sorter apparatus includes a plurality of interconnected slats defining an endless traveling web. An upper run of the web defines a first conveying surface traveling in a longitudinal direction. A plurality of pusher shoes are provided, each moving along at least one of the slats to laterally displace an article on said conveying surface. A web end portion of the web is extendable and contractible in the longitudinal direction. A product handling conveyor at the web end portion has a second conveying surface that is adapted to supply product to, or receive product from, the first conveying surface. The product handling conveyor has a conveyor end portion that is adjacent to the web and is moveable with extension and contraction of the web end portion. In this manner, the first and second conveying surfaces maintain a constant relative relationship.

Abstract: A conveyor sorter includes a conveying surface movable in a longitudinal direction and a plurality of pusher shoes capable of traveling laterally of the conveying surface. At least one diverting rail is configured to selectively guide at least one of the pusher shoes laterally of the conveying surface. At least one diverter associated with the diverting rail is adapted to selectively transfer one or more pusher shoes to the diverting rail. The diverting rail has at least a first portion and a second portion. The first portion is at a first angle with respect to the longitudinal direction and the second portion is at a second angle with respect to the longitudinal direction that is different from the first angle. A pusher shoe guided by the diverting rail travels at a first lateral rate along the first portion and at a second, different lateral rate along the second portion.

Abstract: A positive displacement sorter apparatus includes a plurality of interconnected slats defining an endless traveling web. An upper run of the web defines a first conveying surface traveling in a longitudinal direction. A plurality of pusher shoes are provided, each moving along at least one of the slats to laterally displace an article on said conveying surface. A web end portion of the web is extendable and contractible in the longitudinal direction. A product handling conveyor at the web end portion has a second conveying surface that is adapted to supply product to, or receive product from, the first conveying surface. The product handling conveyor has a conveyor end portion that is adjacent to the web and is moveable with extension and contraction of the web end portion. In this manner, the first and second conveying surfaces maintain a constant relative relationship.

Abstract: A positive displacement sorter apparatus and method includes providing a plurality of interconnected slats defining an endless web, an upper run of the web defining a conveying surface. A plurality of pusher shoes are provided, each moving along at least one of the plurality of slats to laterally displace articles on the conveying surface. Each of the pusher shoes includes a diverting portion extending above the conveying surface. The diverting portion includes a diverting surface and a stop surface. The diverting surface contacts an article and laterally displaces that article. A lifting force is applied by the diverting surface to a portion of the article being diverted. The stop surface limits movement of the article relative to the pusher shoe.

Abstract: A method and apparatus for sorting or pre-sorting objects contains a system of conveyors and crossover diverters incorporating the topology of an omega network. The sorter interconnects a series of perfect shuffle networks, interleaved with banks of crossover switches. Collision avoidance is implemented by controlling flow on accumulator conveyors entering the crossover switches. Extra banks of crossover switches may be added to provide redundancy and load-balancing capabilities to the system.

Abstract: A positive displacement sorter includes a conveying surface, a plurality of pusher shoes capable of traveling laterally of the conveying surface travel direction, a diverting assembly selectively diverting the pusher shoes and a control. The pusher shoes are generally separated from each other and the travel of direction by a shoe pitch. The diverting assembly includes a plurality of diverting rails extending generally diagonally under the conveying surface and a plurality of actuators associated with the diverting rails. The control is capable of controlling at least two of the actuators in a manner that selectively diverts at least two of the pusher shoes that are spaced apart in integer increments of the shoe pitch notwithstanding that the actuators are separated from each other by more than the shoe pitch.

Abstract: A positive displacement sorter includes a plurality of interconnected slats defining an endless web, an upper run of the web defining a conveying surface conveying articles in a longitudinal direction. A plurality of pusher shoes move along the slats to laterally displace articles on the conveying surface. The pusher shoes include a base and a member extending from the base below the conveying surface. At least one diverting rail extends diagonally under the conveying surface and at least one diverter is associated with the at least one diverting rail. The at least one diverter includes an actuator that selectively actuates the member toward at least one diverting rail. The at least one diverting rail has a terminal portion opposite the at least one diverter. The terminal portion includes an upper surface engaging an upper portion of the member and a lower surface engaging a lower portion of the member. The upper and lower surfaces direct the member in the longitudinal direction.

Abstract: A positive displacement sorter apparatus and method includes providing a plurality of slats being interconnected in an endless web, an upper run of the web defining a conveying surface, and a plurality of pusher shoes gliding along at least some of the slats to laterally displace articles on the conveying surface. A linear motor system is provided to propel the web and includes a plurality of linear motor secondaries at the slats and at least one primary for propelling the secondaries. A control system controls the primaries.

Abstract: A conveyor sorter and method of laterally displacing articles for diverting articles from a conveying surface includes providing a plurality of movable pushers that are associated with the conveying surface and adapted to move transversely across the conveying surface. A plurality of diverting rails are configured to guide selected ones of the movable pushers across the conveying surface. A plurality of diverters are adapted to selectively divert at least one movable pusher to the diverting tracks when activated into a diverting state. The diverting tracks may include segments that are oriented at different angles with respect to the direction of movement of the conveying surface. This causes selected pusher shoes to be laterally displaced at a first rate during an initial portion of the travel and at a second rate during a subsequent portion of the travel.

Abstract: A sortation system includes a metal frame member and a traveling member having a series of wheels supported by the frame member. The traveling member defines an upper surface that supports articles being sorted. A wear strip is provided between said frame member and the wheels. The wear strip is made up of at least one wheel support strip and a sound deadening material between the at least one wheel support strip and the frame member.

Abstract: A diverting assembly for diverting articles from a conveying surface includes a plurality of movable pushers that are associated with the conveying surface and adapted to move transversely across the conveying surface. A plurality of diverting tracks are configured to guide selected ones of the movable pushers across the conveying surface. A plurality of diverters are adapted to selectively divert at least one movable pusher along the diverting tracks when activated into a diverting state. The diverting tracks may include segments that are oriented at different angles with respect to each other. A controller may select a subset of at least two diverters from the plurality of diverters and activate them into the diverting state. The activation of the diverters may be simultaneous, or the downstream diverter may be activated prior to the upstream diverter being activated.

Abstract: A positive displacement sorter apparatus and method includes providing a plurality of slats being interconnected in an endless web, an upper run of the web defining a conveying surface, and a plurality of pusher shoes gliding along at least some of the slats to laterally displace articles on the conveying surface. A linear motor system is provided to propel the web and includes a plurality of linear motor secondaries at the slats and at least one primary for propelling the secondaries. A control system controls the primaries.

Abstract: A positive displacement sorter apparatus includes a plurality of interconnected slats defining an endless web, an upper run of the endless web defining a conveying surface. A plurality of pusher shoes are provided, each moving along at least one of the plurality of slats to laterally displace articles on the conveying surface. A linear motor propulsion system may be provided for propelling the web including at least one motor primary and a plurality of motor secondaries at the slats.

Abstract: A positive displacement sorter apparatus and method includes providing a plurality of slats being interconnected in an endless web, an upper run of the web defining a conveying surface, and a plurality of pusher shoes gliding along at least some of the slats to laterally displace articles on the conveying surface. A linear motor system is provided to propel the web and includes a plurality of linear motor secondaries at the slats and at least one primary for propelling the secondaries. A control system controls the primaries.

Abstract: A positive displacement sorter apparatus and method includes providing a plurality of slats being interconnected in an endless web, an upper run of the web defining a conveying surface, and a plurality of pusher shoes gliding along at least some of the slats to laterally displace articles on the conveying surface. A linear motor system is provided to propel the web and includes a plurality of linear motor secondaries at the slats and at least one primary for propelling the secondaries. A control system controls the primaries.

Abstract: A positive displacement sorter apparatus includes a plurality of interconnected slats defining an endless web, an upper run of the endless web defining a conveying surface. A plurality of pusher shoes are provided, each moving along at least one of the plurality of slats to laterally displace articles on the conveying surface. A linear motor propulsion system may be provided for propelling the web including at least one motor primary and a plurality of motor secondaries at the slats.

Abstract: A positive displacement sorter, preferably of the parallel displacement type, includes a conveying surface, a plurality of pusher shoes capable of travelling laterally of the conveying surface, a plurality of diverting rails extending diagonally under the conveying surface and a plurality of electromagnetic actuators associated with the diverting rails. The pusher shoes include a transfer assembly below the conveying surface including a pilot member made of a magnetically permeable material. A pusher shoe is diverted to one of the diverting rails by the actuator associated with the diverting rail magnetically attracting the pilot member associated with that pusher shoe to magnetically initiate a divert. The transfer member associated with the pusher shoe mechanically completes the divert that is initiated magnetically. This allows actuators to be positioned at a pitch that is no greater than the shoe pitch.

Abstract: A method and apparatus for sorting objects includes providing a sorter having a conveying surface, a plurality of pusher shoes capable of traveling laterally of the conveying surface, a plurality of diverting rails extending diagonally under the conveying surface, and a plurality of diverters associated with the diverting rails. The pusher shoes including an article-contacting member extending at least partially above the conveying surface to laterally displace articles on the conveying surface and a transfer assembly having a magnetic member below the conveying surface. The transfer assembly engages ones of the diverting rails to laterally displace the corresponding one of the pusher shoes. Actuators are provided at the diverters. The actuators are selectively energized to attract at least one of the magnetic members towards the associated one of the diverting rails. Residual magnetic attraction between the actuators and the magnetic members is reduced when the actuators are not being energized.

Abstract: A diverting assembly for diverting articles from a conveying surface includes a plurality of movable pushers that are associated with the conveying surface and adapted to move transversely across the conveying surface. A plurality of diverting tracks are configured to guide selected ones of the movable pushers across the conveying surface. A plurality of diverters are adapted to selectively divert at least one movable pusher along the diverting tracks when activated into a diverting state. The diverting tracks may include segments that are oriented at different angles with respect to each other. A controller may select a subset of at least two diverters from the plurality of diverters and activate them into the diverting state. The activation of the diverters may be simultaneous, or the downstream diverter may be activated prior to the upstream diverter being activated.