Abstract: A hub ring employed in mounting a rotating shaft of an electrical device, for example an electric motor, to a supporting bracket reduces or eliminates the transmission of vibration from the shaft to the supporting bracket and is provided with an integral locking mechanism that automatically secures the hub ring to the supporting bracket when the hub ring is positioned on the bracket without the need for separate attachment parts and/or fasteners.

Abstract: In a refrigerator motor with a hollow base-housing with an open mouth defined by a side wall, and a cover for the mouth, one of the housing and cover has integral with it at least one deflectable finger, one end of which is integral with one of said cover and housing and a free end of which is provided with a lip. The other of the housing and cover has integral with it a complementary ledge, spaced and shaped to receive and to be engaged by the lip. In either case, the cover carries, preferably integral with it, a motor mounting bracket by which the motor is mounted in a refrigeration unit. In a preferred embodiment, the finger is integral with the cover and the ledge is integral with the housing, and the mounting bracket has arms that extend beyond a lower perimeter of the housing.

Abstract: A brushless permanent magnet (BPM) motor has a stator mounted on a hub projecting from a base-enclosure. The base-enclosure is cup-shaped, open at an end remote from the stator hub, having a side wall and a top wall defining an interior space. A printed circuit board (PCB) is mounted above the top wall, below the stator. Electrical conductors electrically connected to a printed circuit on the printed circuit board extend through the top wall and into the interior space. The electrical conductors are mounted in a connector of the insulation displacement type. Preferably the connector is made integral with an interior surface of the base-enclosure.

Abstract: A switched reluctance motor (M) comprises a stator assembly (SA) including a stator (S) having a central bore (B) and a plurality of inwardly extending salient teeth (ST). A plurality of stator windings (W) are installed on the stator teeth. A rotor assembly (RA) includes a (R) rotor mounted on a rotor shaft (RS) and installed in the central bore for rotation with respect to the stator assembly. The rotor assembly has a pluralitry of outwardly extending salient teeth (RT) with gaps (G) extending lengthwise of the rotor assembly between adjacent rotor teeth. A noise reducer assembly (10) installed on the rotor assembly reduces the noise produced by the rotor when the motor is operating at normal speeds. The assembly includes a lug (14) made of an electrically non-conducting material inserted in each rotor gap and extending the lengthwise of the rotor assembly.

Abstract: In a refrigeration system in which coils are mounted in a coil passage, a fan system is provided by which air is caused to pass over the coils. The fan system includes a housing communicating with a coil passage. The housing has an inlet and an outlet each with a mouth, the mouths of the inlet and outlet being oriented substantially 180.degree. from one another. A cylindrical, elongated transverse flow fan is mounted in the housing transversely thereof and an electric motor is connected to rotate the fan. An inlet baffle extends around a part of the fan. An outlet baffle has a scoop part with a free edge extending along the length of the fan, spaced radially from the fan a short distance, and off set toward the outlet mouth. The outlet baffle, including the scoop part, defines one service of a passage to the outlet mouth. The air that passes through the housing flows through the inlet and the outlet mouths in planes substantially parallel with one another.

Abstract: A dynamoelectric machine in the preferred form of a permanent magnet motor has an integral blade assembly associated with the rotor for the motor. The motor includes an enclosure with which the blade assembly mates. The blade structure/housing combination provides a labyrinth moving seal to protect the motor and associated motor control. The blade assembly and enclosure preferably are constructed from nonconductive material and provide a fully electrically insulated motor-fan assembly, which eliminates the need for certain grounding requirements. Blade construction is optimized easily to reduce audible sound in operation use. A method of assembly for a motor provides an integral blade assembly housing arrangement.

Abstract: A motor, described as a brushless permanent magnet (BPM) motor, has a cup-shaped, open bottomed enclosure having a side wall and a top wall defining a lower interior space. The side wall has a port interrupting a bottom edge. A printed circuit board or other motor electric circuit is positioned above the top wall, below the stator. Electrical conductors electrically connected to the electric motor circuit extend through the top wall and into the interior space. Current supply conductors extend through the side wall port and are electrically connected to the electrical conductors from the circuit. An enclosure cover member has, projecting into the interior space, at least one deflectable prong with an overhanging lip, and a strain relief block positioned adjacent but spaced from the side wall port. The cover has a tool-receiving aperture to permit engagement of a tool with the prong.

Abstract: A household appliance (D) has a housing (H). A fan (A) located inside the housing circulates air through the appliance. The fan is attached to a motor (M) located outside the housing. The motor has a shaft (S) extending through an opening (O) in a sidewall (W) of the housing and the fan is connected to the inner end of the shaft. A hub ring (9) is used for mounting the motor to the housing and includes a flange (13) having tabs (17) which engage a hub U of the motor to interlock the motor/fan assembly with the hub ring. The housing has a projection (3) on the outside of the housing through which the shaft extends and the hub ring has a sleeve 11 received in the projection to align and support the motor/fan assembly.

Abstract: An electric motor for use with a pump has a stator assembly and a rotor assembly. The rotor assembly includes a rotatable shaft and a rotor affixed to and rotatable with the shaft. The stator and rotor assemblies are intended for installation in an appliance. A cover forms an endshield for the motor, as well as a portion of the housing of a pump for the appliance. The cover is constructed so as to align the shaft extending into the pump with operable portions of the pump.

Abstract: Electric motor structure for protection against the emission of burning and molten materials from open areas of a motor frame supporting the motor structure, including a resilient fire resistant barrier sheet having edges thereof interlocking with the edges of the motor frame defining such open areas, to provide a tight protective fit.

Abstract: A method and apparatus for making a rotor assembly for an electric motor wherein the rotor core of the assembly includes a stack of annular laminations having fixed molded annular end rings on opposed faces thereof with a rotor shaft extending through the core and fixed thereto by a molded rotor hub shaped in cup-like fashion at one end thereof to cooperate in forming an oil return member therewith.

Abstract: A belt driven system (1) employs a dynamoelectric machine (11) to rotate a pulley (7) on which is positioned a drive belt (13). An improvement is a belt locator (19) for locating the belt on the pulley. The locator is effective to properly locate the belt on the pulley if it is initially mis-installed with respect to the pulley, and maintains the belt position if the belt begins to slip off the pulley during operation of the system.

Abstract: A method and apparatus for making a rotor assembly for an electric motor wherein the rotor core of the assembly includes a stack of annular laminations having fixed molded annular end rings on opposed faces thereof with a rotor shaft extending through the core and fixed thereto by a molded rotor hub shaped in cup-like fashion at one end thereof to cooperate in forming an oil return member therewith.

Abstract: An electric motor ventilation structure having an interior fan with a dual concentric set of radially disposed blades located within an endshield of said motor in close proximity to the end of the rotor and stator assemblies within said endshield and to the other peripheral surfaces of said stator assembly within that endshield. The disposition of said blades is such as to break the hot air boundary layer adjacent to each of said windings and cause the movement of heated air through the axial and radial endshield apertures to the external environment and replenishment with cooler air from that environment during motor operation.

Abstract: A method and apparatus for making a rotor assembly for an electric motor wherein the motor core of the assembly includes a stack of annular laminations having fixed molded annular end rings on opposed faces thereof with a rotor shaft extending through the core and fixed thereto by a molded rotor hub shaped in cup-like fashion at one end thereof to cooperate in forming an oil return member therewith.

Abstract: An improved drain structure for a vertically mounted electric motor to be positioned below a liquid sump into which the rotor shaft of the motor can be connected including a drip pan through which the rotor shaft passes, the pan having peripheral side walls and drain means attached thereto and a liquid slinger above the pan adapted to sling liquid leakage in a radially outward direction below the pan side walls to be drained away from the motor.

Abstract: An improved electric motor ventilation structure including a "pull through" fan associated with a motor endshield including a shaft for supporting a fan on one end thereof, and defining a preselectively spaced and contoured air inlet and air circulating chamber adjacent the stator and rotor assembly of the electric motor to cause the circulating air to break the "hot" boundary layer of air immediately adjacent the motor windings.

Abstract: Means for reducing mechanical vibration or acoustical noise between a dynamoelectric machine (e.g., an electric motor) and its application is disclosed in which the endshield of the motor has at least one stud extending therefrom. The application (e.g., a washing machine transmission) has an application frame with at least one aperture therein coaxially receiving the stud. An elastomeric grommet having a bore therethrough receives at least a portion of the stud and the grommet bears on the endshield of the motor and on the application frame.