Abstract: An electric motor built for exposure to high pressure fluid includes a unitary metal sleeve that provides a fluid barrier between the rotor and the stator. An overmolded resin encapsulates the stator windings and reinforces the sleeve to minimize deformation of the sleeve under high fluid pressures. The overmolded resin also fixes the positions of insulation displacement connectors connected to the stator windings, thereby avoiding mechanical brackets and fasteners for holding the insulation displacement connectors in position.

Abstract: An electric motor built for exposure to high pressure fluid includes a unitary metal sleeve that provides a fluid barrier between the rotor and the stator. An overmolded resin encapsulates the stator windings and reinforces the sleeve to minimize deformation of the sleeve under high fluid pressures. The overmolded resin also fixes the positions of insulation displacement connectors connected to the stator windings, thereby avoiding mechanical brackets and fasteners for holding the insulation displacement connectors in position.

Abstract: An electric motor built for exposure to high pressure fluid includes a unitary metal sleeve that provides a fluid barrier between the rotor and the stator. An overmolded resin encapsulates the stator windings and reinforces the sleeve to minimize deformation of the sleeve under high fluid pressures. The overmolded resin also fixes the positions of insulation displacement connectors connected to the stator windings, thereby avoiding mechanical brackets and fasteners for holding the insulation displacement connectors in position.

Abstract: An electric motor built for exposure to high pressure fluid includes a unitary metal sleeve that provides a fluid barrier between the rotor and the stator. An overmolded resin encapsulates the stator windings and reinforces the sleeve to minimize deformation of the sleeve under high fluid pressures. The overmolded resin also fixes the positions of insulation displacement connectors connected to the stator windings, thereby avoiding mechanical brackets and fasteners for holding the insulation displacement connectors in position.

Abstract: An electric motor built for exposure to high pressure fluid includes a unitary metal sleeve that provides a fluid barrier between the rotor and the stator. An overmolded resin encapsulates the stator windings and reinforces the sleeve to minimize deformation of the sleeve under high fluid pressures. The overmolded resin also fixes the positions of insulation displacement connectors connected to the stator windings, thereby avoiding mechanical brackets and fasteners for holding the insulation displacement connectors in position.

Abstract: An electric motor built for exposure to high pressure fluid includes a unitary metal sleeve that provides a fluid barrier between the rotor and the stator. An overmolded resin encapsulates the stator windings and reinforces the sleeve to minimize deformation of the sleeve under high fluid pressures. The overmolded resin also fixes the positions of insulation displacement connectors connected to the stator windings, thereby avoiding mechanical brackets and fasteners for holding the insulation displacement connectors in position.

Abstract: An electric motor built for exposure to high pressure fluid includes a unitary metal sleeve that provides a fluid barrier between the rotor and the stator. An overmolded resin encapsulates the stator windings and reinforces the sleeve to minimize deformation of the sleeve under high fluid pressures. The overmolded resin also fixes the positions of insulation displacement connectors connected to the stator windings, thereby avoiding mechanical brackets and fasteners for holding the insulation displacement connectors in position.

Abstract: An electric motor built for exposure to high pressure fluid includes a unitary metal sleeve that provides a fluid barrier between the rotor and the stator. An overmolded resin encapsulates the stator windings and reinforces the sleeve to minimize deformation of the sleeve under high fluid pressures. The overmolded resin also fixes the positions of insulation displacement connectors connected to the stator windings, thereby avoiding mechanical brackets and fasteners for holding the insulation displacement connectors in position.

Abstract: A magnetic drive assembly includes a housing having a cylindrical end bell portion and a cylindrical hub portion adjacent the end bell portion, wherein the radius of the hub portion is greater than the radius of the end bell portion. One or more mounting tabs extend radially outward from the hub portion. The housing has heat transfer fins associated with the mounting tabs for dissipating heat and structurally supporting the mounting tabs in the manner of a gusset. The heat transfer fins may be arranged on opposite sides of each mounting tab to provide support for the mounting tab in opposite axial directions of the housing. To relieve internal pressure, the housing may have at least one pressure equalization vent allowing passage of gas but not passage of liquid into and out of the housing.

Abstract: For improved water resistance, the stator assembly of a d.c. brushless motor is encapsulated in an overmolding formed from a mixture of a thixotropic, flexible epoxy resin and glass fibers. The overmolding may be applied to the stator assembly by a vacuum pressure impregnation process. The overmolding may also encapsulate a Hall effect circuit board and sensors of the motor.

Abstract: A magnetic drive assembly includes a housing having a cylindrical end bell portion and a cylindrical hub portion adjacent the end bell portion, wherein the radius of the hub portion is greater than the radius of the end bell portion. One or more mounting tabs extend radially outward from the hub portion. The housing has heat transfer fins associated with the mounting tabs for dissipating heat and structurally supporting the mounting tabs in the manner of a gusset. The heat transfer fins may be arranged on opposite sides of each mounting tab to provide support for the mounting tab in opposite axial directions of the housing. To relieve internal pressure, the housing may have at least one pressure equalization vent allowing passage of gas but not passage of liquid into and out of the housing.

Abstract: A method of making a slotless electric motor wherein the active winding segments are adhesively affixed to a support surface or previously deposited active wire segments to form a self-supporting winding structure. The self-supporting structure is then secured in a magnetic structure of the slotless stator.

Abstract: A method of making a slotless electric motor wherein the active winding segments are adhesively affixed to a support surface or previously deposited active wire segments to form a self-supporting winding structure. The self-supporting structure is then secured in a magnetic structure of the slotless stator.

Abstract: A method of making a slotless electric motor wherein the active winding segments are adhesively affixed to a support surface or previously deposited active wire segments to form a self-supporting winding structure. The self-supporting structure is then secured in a magnetic structure of the slotless stator.