Abstract: A power take-off unit is connected to a power take-off gear/port on a concrete mixing truck transmission, the power take-off unit being driven by the engine so it is always providing power as long as the engine is running. A hydraulic pump is connected to and driven by the power take-off unit. Hydraulic lines connect the pump to a planetary drive assembly for the concrete mixing drum; the drum itself is capable of receiving only a small/light load of concrete, in the range of two to five cubic yards.

Abstract: A power take-off unit is connected to a power take-off gear/port on a concrete mixing truck transmission, the power take-off unit being driven by the engine so it is always providing power as long as the engine is running. A hydraulic pump is connected to and driven by the power take-off unit. Hydraulic lines connect the pump to a planetary drive assembly for the concrete mixing drum; the drum itself is capable of receiving only a small/light load of concrete, in the range of two to five cubic yards.

Abstract: Disclosed herein is a packet switching device coupled to receive inbound packets from a network, switch the packets through a switching fabric, and provide outbound packets to a network. Multiple different packet switching devices use such switching fabric to exchange inbound packets. The packet switching device includes an output traffic manager that selectively stores outbound packets from the switching fabric in queues until the packets can be transmitted to the network. When any queue is unable to store more outbound packets, the output traffic manager communicates to the input traffic manager to drop inbound packets destined for that queue, instead of transferring them to the switching fabric and ultimately dropping the packets as outbound packets. Thereby traffic through the switching fabric is reduced.

Abstract: Speed-up is implemented only in one or more portions of a network that would otherwise experience contention (i.e. when operated without speed-up). For example, an initial stage of a multi-stage interconnection network (MIN) is kept undilated while dilating at least a portion of a later stage. The dilated later stage eliminates or reduces contention, by receiving more traffic than traffic otherwise received by an undilated later stage. In one example, all output ports in the initial stage of a MIN are kept undilated, while one or more input ports of a later stage are dilated. In one implementation, the MIN has stages identified by a stage number that is in the range 0 to N−1, wherein N is the total number of stages, and each stage has output ports dilated by a factor “d” and the relation between number n of links in the output port of a stage and the stage's stage number I is n=d1.