Abstract: A method of placing a slurry stream comprising dry friction reducer (DFR) into a subterranean formation comprising: forming a slurry comprising an aqueous-based fluid and a proppant by introducing a dry material comprising the proppant and the aqueous-based fluid into a blender; forming a DFR slurry stream comprising DFR; and introducing the DFR slurry stream into the formation, wherein forming the DFR slurry stream comprises: forming a DFR concentrate; adding the DFR concentrate into the slurry in the blender at a location within the blender distant a location at which the dry material is added thereto, and removing the DFR slurry stream from the blender; forming a DFR concentrate, removing a slurry stream from the blender, and adding the DFR concentrate into the slurry stream to provide the DFR slurry stream; and/or introducing dry, powdered DFR into the blender and removing the DFR slurry stream from the blender.

Abstract: A PSC motor includes a stator core, a rotor arranged in a rotation relationship with respect to the stator core, a first to eighth winding coil sets wound around the stator core and a capacitor. The motor has two kinds of configurations for 4-pole and 6-pole operation modes, respectively. Both configurations comprise a primary winding and a secondary winding which is connected in series with the capacitor, and have two reversible operation directions. The configurations operate different sets of winding coils when operating in different directions.

Abstract: A PSC motor includes a stator core, a rotor arranged in a rotation relationship with respect to the stator core, a first to eighth winding coil sets wound around the stator core and a capacitor. The motor has two kinds of configurations for 4-pole and 6-pole operation modes, respectively. The configuration for the 4-pole mode comprises a primary winding and a secondary winding which is connected in series with the capacitor, and has two reversible operation directions. When operating at one direction, the primary winding includes the first to fourth winding coil sets, and the secondary winding includes the fifth to the eighth winding coil sets; and when operating at another direction, the primary winding includes the fifth to the eighth winding coil sets, and the secondary winding includes the first to fourth winding coil sets.

Abstract: A multi-speed single-phase induction motor including a stator having a main winding selectively adapted for 2n-pole operation and 6n-pole operation, where n is an integer. The main winding includes a plurality of coil sets. The motor is configured to energize at least one of the coil sets during 2n-pole operation and during 6n-pole operation.

Abstract: A single phase, three-speed induction motor having 4, 6, and 8-pole speed configurations. In one embodiment, the motor is constructed and arranged to be used in connection with a washing machine. The 8-pole speed winding shares a portion of the 4-pole speed winding, but not all of the 4-pole speed winding is used in the 8-pole configuration. In one embodiment, the 4-pole speed winding includes four winding portions and the 8-pole speed configuration uses two of the four winding portions without the need for additional switch contacts to reconfigure the motor for operating in the 4-pole mode or the 6-pole mode. In one embodiment, shared winding portions are wound on the stator core in a generally non-sinusoidal distribution and non-shared winding portions are wound on the stator core in a generally sinusoidal distribution.

Abstract: A single phase, three-speed induction motor having 4, 6, and 8-pole speed configurations. In one embodiment, the motor is constructed and arranged to be used in connection with a washing machine. The 8-pole speed winding shares a portion of the 4-pole speed winding, but not all of the 4-pole speed winding is used in the 8-pole configuration. In one embodiment, the 4-pole speed winding includes four winding portions and the 8-pole speed configuration uses two of the four winding portions without the need for additional switch contacts to reconfigure the motor for operating in the 4-pole mode or the 6-pole mode. In one embodiment, shared winding portions are wound on the stator core in a generally non-sinusoidal distribution and non-shared winding portions are wound on the stator core in a generally sinusoidal distribution.

Abstract: A motor includes a stator core, a rotor in rotational relationship with the stator core and a main winding on the core. In one form, the main winding includes a 4-pole configuration and an 8-pole configuration and the motor has a 4-pole auxiliary winding on the core. A switching circuit selectively simultaneously energizes a portion only of the 4-pole configuration of the main winding and the 4-pole auxiliary winding when starting the motor for energizing the main winding in the 8-pole configuration. In another form, the main winding includes a 2-pole configuration and an 4-pole configuration and the motor has a 2-pole auxiliary winding on the core. In this latter form, the switching circuit selectively simultaneously energizes a portion only of the 2-pole configuration of the main winding and the 2-pole auxiliary winding when starting the motor for energizing the main winding in the 4-pole configuration.

Abstract: A motor comprising a 2/4-pole permanent-split capacitor motor having a shared main winding and a shared auxiliary winding. The shared auxiliary winding comprises a 4-pole auxiliary winding phase shifted one slot less than a phase shift of 90 degrees with respect to the 4-pole main winding. A switching circuit selectively simultaneously energizes the shared main winding and the shared auxiliary winding in the 2-pole and 4-pole configurations.