Abstract: Some aspects of the present invention provide for the downloading of code, including but not limited to peripheral device code, upon the occurrence of predetermined events, sometimes referred to herein as “triggers.” For example, exceeding a predetermined number of errors within a predetermined time may comprise a trigger. Some implementations provide new peripheral device code each time a gaming machine initializes. Some embodiments provide peripheral devices with relatively small (or no) non-volatile memory. A smaller non-volatile memory (as compared to prior art peripheral devices of the same type) may be possible because it is not necessary—and may not be desirable—to retain peripheral device code in non-volatile memory.

Abstract: A pan type concrete mixer in which a plurality of sprayers are inserted in a substantially equl-spaced arrangement in a lid of the pan to extend into the chamber. Each sprayer has a head with two diametrically-opposite jet nozzles. Each head is capable of substantially 360° rotation. Each sprayer is connectable to a pressurized water supply whereby passage of water into each sprayer causes rotation of the respective head and jet discharge of spray from the respective nozzles around the inside of the chamber.

Abstract: A combustion boiler for burning fuel and producing heat to generate steam. A method of minimizing discharging of nitrogen oxides from a combustion boiler comprising the steps of spraying a reducing agent into an overfire air stream and supplying the overfire air stream to the combustion boiler. Vaporizing the sprayed reducing agent at least within about 0.1 seconds of the sprayed reducing agent entering the combustion boiler and reacting the vaporized reducing agent with the nitrogen oxides within the combustion chamber to reduce the nitrogen oxides and minimize discharge of nitrogen oxides from the combustion boiler.

Abstract: A combustion boiler for burning fuel and producing heat to generate steam. A method of minimizing discharging of nitrogen oxides from a combustion boiler comprising the steps of spraying a reducing agent into an overfire air stream and supplying the overfire air stream to the combustion boiler. Vaporizing the sprayed reducing agent at least within about 0.1 seconds of the sprayed reducing agent entering the combustion boiler and reacting the vaporized reducing agent with the nitrogen oxides within the combustion chamber to reduce the nitrogen oxides and minimize discharge of nitrogen oxides from the combustion boiler.

Abstract: A method by which a pair of communicating network equipment drivers can determine if the equipment they control such as a network adapter or a switch port are directly connected by a single network cable, is applicable to network protocols which include a link active signaling technique as part of the physical layer specification. The method includes determining whether the link is in a first state in which there is only one device coupled to the link without intervening devices which are members of a particular class, or in a second state in which there may be more than one device coupled to the link without intervening devices which are members of the particular class. If the link is in the first state, then a physical layer test involving the physical layer link active signaling mechanism is executed to ensure that the responding device is coupled to the same link without intervening devices that are not members of the particular class.