Dayton-Phoenix Group, Inc.
|Dayton-Phoenix Group, Inc. Patent applications|
|Patent application number||Title||Published|
|20140132198||Control for Multi-Phase Induction Motor - A method of controlling operation of a multi-phase induction motor may include transmitting a low-speed operation signal by a master computer to a control signal board for low-speed operation of the motor; the control signal board receiving the low-speed operation signal, and in response to the low-speed operation signal, the control signal board sensing that the master computer is not simultaneously transmitting a high-speed operation signal, and in response to receiving the low-speed operation signal and not simultaneously receiving the high-speed operation signal, closing contactors in a power section to transmit power to the motor for low-speed operation, whereby the motor is connected to a source of multi-phase power and operates at low-speed; and the control signal board transmitting a first feedback signal to the master computer that the motor is connected to the source of multi-phase power and is running at low speed.||05-15-2014|
|20120248908||Cooled Fan Motor And Method Of Operation - A cooled fan motor may include an elongate housing adapted to be attached to a tankhead, the housing having at least one longitudinally extending groove, a shaft rotatably attached to the housing, a hub attached to the shaft, the hub having at least one opening therethrough and shaped to form a gap with a tankhead attached to the housing, a rotor attached to the hub, and a stator mounted on the housing such that the groove in the housing forms an air passage between the housing and the stator connecting the gap and the opening. Air external to the motor is able to enter through the gap between the hub and tankhead, flow along the air passage formed by the groove in the housing and exit the motor through the opening in the hub, thereby cooling an interior of the motor. In one aspect, the hub includes radially extending blades such that when the stator is energized, rotation of the hub and blades causes air to enter through the gap, flow along the air passage and exit the motor through the opening in the hub. The groove in the housing may be adjacent bearings carried in the housing for supporting the shaft, such that air movement during operation of the motor may cool the bearings and bearing lubricant and thereby prolong bearing life.||10-04-2012|
|20120038309||Control For Multi-Phase Induction Motor - A method and system for controlling operation of a multi-phase induction motor may include the steps of transmitting a signal by a master computer to actuate a first switch for high-speed or low speed operation of the motor, receiving the signal by a control signal board, and in response to the signal, the control signal board may determine that the motor is enabled for high-speed operation and disabled for low-speed operation, or enabled for low-speed operation and disabled for high-speed operation, as the case may be. In response to the motor state, the control signal board may close or open delta-to-wye contactors, then transmit a signal to a power section to close power contactors to connect the motor to a source of multi-phase power. The method may include a standby loop of operation in which the control signal board constantly monitors the condition of the system to determine the existence of a fault condition, which may include the temperature of the power section contactors exceeding a predetermined value, the presence of a current overload in the power contactors and whether the master computer generates high and low-speed operation signals simultaneously. The system also may include a running loop of operation in which the same fault conditions are monitored during operation of the motor.||02-16-2012|
|20100127592||STATOR-SLOT WEDGE AND DYNAMOELECTRIC-MACHINE STATOR HAVING STATOR SLOTS AND WEDGES - A dynamoelectric-machine stator includes a stator lamination stack, a plurality of electrically-conductive magnetic wedges, a plurality of electrically-insulative nonmagnetic wedges, and coil windings. The stator lamination stack has circumferentially-spaced-apart stator teeth. Adjacent stator teeth each have a tooth side bounding an intervening stator slot. Adjacent stator teeth each have a radially-outermost tooth tip which circumferentially projects from the corresponding tooth side into the intervening stator slot to partially close the intervening stator slot. The coil windings are randomly wound in the stator slots. The magnetic wedges are each positioned in a corresponding stator slot and physically and solid-magnetically contact the corresponding tooth tips to fully close the corresponding stator slot proximate the corresponding tooth tips. The nonmagnetic wedges are each positioned in a corresponding stator slot between the corresponding coil windings and the corresponding magnetic wedge. A stator-slot magnetic wedge of particular shape is also described.||05-27-2010|
|20100052464||AC-INDUCTION-MOTOR ROTOR LAMINATION HAVING ROTOR SLOTS - An AC-induction-motor rotor lamination has a longitudinal axis and circumferentially spaced apart and closed rotor slots. Each rotor slot includes first through fifth corners, a straight slot base, straight first and second slot sides, and first and second curved sides. The slot base extends from the first corner to the second corner, the first slot side extends substantially radially inward from the second corner to the third corner, and the second slot side extends substantially radially inward from the first corner to the fourth corner. The first and second curved sides extend from a corresponding one of the third and fourth corners to the fifth corner. A rotor lamination having slot sides extending substantially radially outwardly from the second and first corners, and rotor laminations having open rotor slots (with slot sides extending substantially radially inward or outward) are also described.||03-04-2010|
|20100019611||MOTOR/GENERATOR PHASE INSULATION ARTICLE AND METHOD FOR MANUFACTURING - Apparatus including a monolithic, motor/generator phase insulation article having a manufactured state and a ready-to-use state. The insulation article has longitudinally-spaced-apart first and second tabs and flexible, transversely-spaced-apart first and second legs each having a first end monolithically joined to the first tab and a second end monolithically joined to the second tab. The first and second tabs are disposed longitudinally closer together in the manufactured state than in the ready-to-use state. In the manufactured state the first and second legs each have a more serpentine shape, and in the ready-to-use state the first and second legs each have a less serpentine shape. A method for manufacturing the insulation article is also described which cuts a monolithic, substantially-rectangular sheet of motor/generator phase insulation to create the insulation article.||01-28-2010|
|20090304535||LOCOMOTIVE-RADIATOR-COOLING-FAN TANKHEAD ASSEMBLY - Apparatus including a locomotive-radiator-cooling-fan tankhead assembly having a substantially-circular base plate and a substantially-circular outer ring. The base plate has a central longitudinal axis and a circumference. The outer ring is substantially coaxially aligned with the central longitudinal axis and is attached to the base plate proximate the circumference. The base plate has a substantially-planar first surface having a central recess substantially coaxially aligned with the central longitudinal axis and having circumferentially-separated, first and second peripheral recesses each radially spaced apart from the central recess and extending radially inward from proximate the circumference. The outer ring longitudinally extends beyond the first surface. The tankhead assembly is devoid of any gussets attached to the base plate and is devoid of any gussets attached to the outer ring.||12-10-2009|
Patent applications by Dayton-Phoenix Group, Inc.