Nidec Motor Corporation

Emerson Electric Company

John H Hussey

Jeffrey Scott Sherman

Vincent P Fargo

Steven R Palmer

Mark S Amalfitano

Chetan O Modi

Keith I Hoemann

William L Riggs

Joseph A Vehige

Kent Lee White

Ryan M Bastien

Alan D Crapo

Thomas M Bourquin

Chuck Peters

Daniel E Bailey

Kent A Sheeran

Marc J Corcoran

John Scott Rose

Ralph D Furmanek

J Scott Rose

Chuck Roessler

Eric De La Garza

Charles J Roessler

Fidel Flores Mercado

Samuel E Mayberry

Larry Dawson Barton

Barry B O'Brien

Jeffery J Meystrik

Mordechai Schwartz

René Cruz Iglesias

Jeffrey J Meystrik

A rotor for an electric motor includes a core, a plurality of magnets, and a magnet retention cap. The core is rotatable about an axis and defines a plurality of magnet-receiving slots. Each of the magnets is received in a respective one of the magnet-receiving slots. The magnet retention cap is fixed relative to the core and includes a resiliently deformable magnet retention element configured to restrict axial movement of the magnets relative to the core.

Retention cap for permanent magnet rotor

An electric motor includes a stator assembly and a rotor assembly. The rotor assembly includes a rotor shaft that is rotatable relative to the stator assembly about a rotation axis. The motor also includes an endshield, a bearing assembly rotatably supporting the rotor shaft on the endshield, a shaft ground assembly electrically coupled to the rotor shaft, and a bearing lockplate. The bearing lockplate is fixedly coupled to the endshield. The shaft ground assembly is supported by the bearing lockplate on the endshield.

Bearing lockplate supporting electric motor shaft ground

A blower motor is provided for use in a machine. The motor includes a stator and a rotor rotatable about an axis. The stator includes a generally toroidal core, a first-main winding, and an auxiliary winding that is electrically out of phase with the first-main winding. The first-main winding and the auxiliary winding are both full pitch windings.

Induction motor having full pitch winding

An electric motor includes a housing shell, an electrical component, and a baffle for directing airflow to the electrical component. The baffle includes a baffle connection element. The shell includes a shell connection element. Interengagement of the connection elements at least substantially restricts axial shifting of the baffle.

Electric motor with air baffle

A motorized pump assembly includes a pump and a motor for driving the pump. The pump includes a pump housing that at least in part defines a pump chamber. The motor includes a stator, a rotor rotatable about an axis, a motor housing, and a bearing assembly. The rotor includes a motor shaft extending along the axis. The motor housing includes an endshield that at least in part defines a motor chamber in which the stator and the rotor are at least substantially received. The bearing assembly rotatably supports the motor shaft on the endshield. The pump housing and the endshield are fixed to one another and cooperatively at least in part define an overflow chamber adjacent the pump chamber. The endshield defines a drainage channel fluidly interconnected with the overflow chamber and configured to direct fluid from the overflow chamber away from the bearing assembly.

Pump motor for high temperature fluids

A location and retention component is provided for positively locating an overspeed guard and retaining a centrifugal actuator at an optimum positional relationship relative to each other. The system includes a first and second retention element removably engagable to the output shaft of a motor and axially fixable to the shaft at corresponding locations to maintain the optimum positional relationship. The first retention element serves as a positive stop for assembling the overspeed guard on the motor shaft, while the second retention element ensures that the centrifugal actuator is properly placed within the overspeed guard.

Actuator overspeed guard

An HVAC system includes a heating/cooling element; an electric motor; a speed sensor; and a control device. The heating/cooling element includes a heating element, a cooling element, and heat exchangers. The motor has a rotatable shaft coupled with a blower wheel. The speed sensor senses a rotational speed of the motor shaft and the blower wheel and includes a magnet coupled with the motor shaft for rotation therewith; and a coil assembly mounted concentrically over the magnet and operable to generate an alternating signal when the magnet rotates relative to the coil. The alternating signal has an electrical characteristic that is generally proportional to the rotational speed of the shaft. The control device determines a rotational speed of the motor shaft and disables operation of the heating/cooling element when the alternating signal indicates that the rotational speed of the shaft drops below a minimum threshold speed.

HVAC blower motor with speed sensor

An electrical motor has been developed having an epoxy, which encapsulates a stator winding to protect the stator winding from the humid and damp atmosphere associated with a cooling tower. The electrical motor includes a stator core, a stator winding configured about the stator core, and an epoxy encapsulating at least an end portion of the stator winding, the epoxy enabling the stator winding to be isolated from an atmosphere surrounding a fan within in a cooling tower operated by the electrical motor in which the stator core and the stator winding are positioned.

Cooling tower motor having improved moisture protection

An electric induction motor assembly includes a rotor assembly and a stator assembly. The rotor assembly includes an exposed bar rotor comprising a plurality of axially stacked, punched-to-size rotor laminations. The stator assembly includes a plurality of axially stacked, punched-to-size stator laminations. Each of the laminations presents an axial thickness of less than 0.024 inches. The rotor assembly and the stator assembly cooperatively define a radially extending air gap between a radially outer periphery of the rotor assembly and a radially inner periphery of the stator assembly that is less that 0.012 inches.

Exposed bar induction motor with punched-to-size air gap

A hermetic motor includes a stator having at least one winding formed by a winding wire, and an on-winding motor protector having at least one contact. To improve the reliability and reduce the cost of the hermetic motor, the winding wire is directly coupled (without a lead wire) to the motor protector contact. Additionally, a common wire extending from the motor protector to a cluster block (if applicable) can be the same type of wire as the winding wire.

Hermetic motors with windings coupled to on-winding motor protectors via welded terminals

An electric motor assembly includes a stator assembly and a rotor assembly having a shaft disposed within a motor case. The motor case includes an endshield with a centrally disposed bearing-receiving core that is configured to receive any one of a plurality of bearing assemblies, including at least a ball bearing and a self-aligning bearing, for rotatably supporting the shaft. The core includes a bearing assembly engagement surface with a generally cylindrical first portion and a generally frustoconical second portion, such that any of the selected bearings received therein directly contacts and engages the first surface portion or the second surface portion.

Electric motor endshield having variable bearing arrangement

A stator assembly adapted for use in an electric motor. The assembly includes a stator core having an annular rim and a plurality of teeth extending radially inward from the rim. The stator core has an outer diameter, a root tooth diameter and an inner diameter. Each tooth has a root, a neck extending inward from the root, a head opposite the root, and a length measured from its root to its head. The neck has a width. Each adjacent pair of teeth define a slot having an area. The assembly also includes a winding having aluminum and/or copper wrapped around at least three teeth of the stator core. The stator core and winding have four, six or eight magnetic dipoles. The stator core outer diameter is in a range from about 5.1 inches to about 5.9 inches. The stator core inner diameter is less than about 3.0 inches.

Electric machine

A method for attaching an electric conductor to an electrically conductive terminal. The electric conductor comprises a wire and a cladding surrounding the wire. The wire has an exposed end portion extending from an end of the cladding. The method comprises placing a sleeve over the electric conductor. The sleeve is of an electrically insulative material. The method further includes positioning the exposed end portion of the wire adjacent the terminal, securing the exposed end portion of the wire to a first portion of the terminal in a manner so that the exposed end portion of the wire is mechanically secured to and electrically coupled to the terminal, moving the sleeve along the electric conductor to a position in which a portion of the sleeve is adjacent the terminal, and securing the sleeve to a second portion of the terminal in a manner so that the sleeve is mechanically secured to the terminal.

Growing community of inventors

St. Louis, MO, United States of America

John H Hussey