Abstract: A stator defines multiple stator poles with associated electrical windings. A rotor includes multiple rotor poles. The rotor is movable with respect to the stator and defines, together with the stator, a nominal gap between the stator poles and the rotor poles. The rotor poles includes a magnetically permeable pole material. The rotor also includes a series of frequency programmable flux channels (FPFCs). Each FPFC includes a conductive loop surrounding an associated rotor pole. The stator and the rotor are arranged such that the electrical windings in the stator induce an excitement current within at least one of the FPFCs during start-up.

Abstract: A chair support shell has an integral back portion, seat portion, and joining portion between the back portion and the seat portion. At least a major portion of the support shell comprises a compliant structure, the compliant structure having a plurality of cells interconnected by a plurality of resilient members. The compliant structure provides compliance in the seat portion, compliance in the back portion, and compliance in the joining portion. The compliant structure enables recline of the back portion relative to the seat portion.

Abstract: An electric machine includes a stator and a rotor energizable by magnetic fields produced by the stator when receiving a stator current to produce relative motion between the rotor and the stator. A controller is configured to send the stator current through the stator at a current angle measured from the closest one of a pole of the rotor, determine a desired operational output of the electric machine, and determine a desired rotor motion corresponding to the desired operational output of the electric machine. The controller is further configured to calculate a vector control modulation applied to the stator that elicits the desired rotor motion, and adjust the current angle of the stator current based on the vector control modulation to cause the rotor to perform the desired rotor motion and achieve the desired operational output of the electric machine.

Abstract: Systems and methods for managing payment network transactions to a group account associated with a group are disclosed. One example system includes a memory including a data structure. The data structure includes transaction data representing multiple payment network transactions to the group account. Each of the multiple transactions is identified, in the transaction data, to one of multiple members of the group. The system includes a processor coupled to the memory and configured to cause a member interface to be displayed at a computing device associated with a first member of the group. The member interface includes a first indicator associated with the first member and representative of transactions identified to the first member, and the member interface includes a second indicator associated with a second member of the group and representative of one or more transactions identified to the second member.

Abstract: A method of operating a mineral processing kiln includes introducing a quantity of a selective non-catalytic reduction (SNCR) reducing agent into the kiln. The SNCR reducing agent may be a solid, liquid, or a gas. A mineral processing kiln modified for the implementation of SNCR is also disclosed.

Abstract: A method of operating a mineral processing kiln includes introducing a quantity of a selective non-catalytic reduction (SNCR) reducing agent into the kiln. The SNCR reducing agent may be a solid, liquid, or a gas. A mineral processing kiln modified for the implementation of SNCR is also disclosed.

Abstract: A method of operating a mineral processing kiln includes introducing a quantity of a selective non-catalytic reduction (SNCR) reducing agent into the kiln. The SNCR reducing agent may be a solid, liquid, or a gas. A mineral processing kiln modified for the implementation of SNCR is also disclosed.

Abstract: Current control values are established for an electric motor including providing a table of motor current control values as a function of motor operating angle, providing a torque request signal indicative of the desired amount of torque to be supplied by the motor, and providing a torque command signal having a value functionally related to the torque request signal and a feed-forward torque signal. The motor operating angle is monitored and the motor is energized using current control values from the table in response to the torque command signal. The amount of torque ripple experienced by the motor is measured when the motor is energized. The measured torque ripple is filtered using a time domain filter and a time domain filtered torque ripple signal is provided.

Abstract: Textile filaments are melt-spun, formed into a yarn, heated, cooled and false twisted while being simultaneously drawn, the upstream propagation of twist from the false twist device being arrested at the entry to the heater and the draw point of the yarn being stabilized on the heater. The twist arresting and draw point stabilizing means may be an abutment or pin with some filaments passing on each side, a radially pinned rotor, nip rolls or two parallel plates between which single filaments, but not twisted yarn, may pass. The false twist crimped yarn may be heat relaxed before wind up.

Abstract: Apparatus for heating strand material comprises two tubular liquid containing manifolds in liquid connection with a plurality of elongate tubular strand heater members and a tubular housing which contains a liquid heating unit and a liquid circulation pump. The tubular housing is connected by its ends to the central regions of the two manifolds and each heater member is connected at each end to a manifold by a short tube. The circulation pump comprises a rotary axial flow vaned impeller and an expansion tank is mounted above the tubular housing.

Abstract: In the manufacture of textile yarns from synthetic thermoplastic materials, such as polyamides, polyesters and polyolefins, e.g. polypropylene, a web or sheet of the material, which may be preformed or formed by extrusion or casting as a step in a continuous process, is subjected to "forging" as by a profiled roller to produce in the web or sheet parallel lines of weakness and then to such a drawing operation in a direction parallel to the lines of weakness that the web or sheet is stretched to many times its original length and, with or without assistance of other mechanical means, is thereby split into discrete, thin filaments suitable for textile yarns.