Assignee: A. O. Smith Corporation

Location: Milwaukee, WI
No. of patents: 237

Number	Title	Issue Date
8064757	System and method for estimating and indicating temperature characteristics of temperature controlled liquids Embodiments of the present disclosure generally pertain to systems and methods for estimating and indicating temperature characteristics of temperature controlled liquids. A system in accordance with one exemplary embodiment of the present disclosure has a tank fill...	11/22/2011
8061308	System and method for preventing overheating of water within a water heater tank A water heating system has a tank, a first heating element, a first temperature sensor, and a controller. The first heating element is mounted on the tank, and the controller is electrically coupled to the first temperature sensor. The controller is configured to de...	11/22/2011
7881831	System and method for controlling temperature of a liquid residing within a tank A water heating system including a tank to store water, a temperature sensor positioned to detect a temperature of the water, and a temperature control element configured to alter the temperature of the water. The system also includes a controller configured to cont...	02/01/2011
7822325	Water heater and method of customizing the water heater A water heater including a vessel, a heating fixture (e.g., an electric-resistance heating element, a gas burner) having a rated maximum heating output, and a controller. The controller includes an interface and a temperature sensor. The controller can control the h...	10/26/2010
7791234	Motor end frame assembly and motor incorporating the same An electric motor includes a stator, a rotor positioned adjacent the stator and cooperating with the stator to generate a torque, and a bearing support assembly coupled to the rotor to at least partially support the rotor for rotation. An end frame includes a post p...	09/07/2010
7737598	Electric motor having a stator A stator configured to rotate a rotor with a number of magnetic poles includes a yoke that includes a back portion and a first type and first quantity of integral teeth, and a second type and second quantity of insertable teeth coupled to the back portion. At least ...	06/15/2010
7709991	Rotor assembly for an electric machine including a vibration damping member and method of manufacturing same A rotor for an electric machine includes a shaft that is rotatable about an axis and defines a first diameter normal to the axis. A first core portion defines a first aperture having a first aperture diameter that is larger than the first diameter. The first core po...	05/04/2010
7687965	Electric machine, stator assembly for an electric machine, and method of manufacturing the same A stator for a motor having a rotor includes a plurality of laminations each formed in a first elongated arrangement. Each lamination includes a first leg, a second leg, and an intermediate portion that are configured to be rearranged and stacked in a stackwise dire...	03/30/2010
7672751	System and method for controlling temperature of a liquid residing within a tank A system for controlling a temperature of a liquid residing within a tank comprises a tank, a first heating element, a first switch, a temperature-based switch, and logic. The first heating element is mounted on the tank, and the temperature-based switch is coupled ...	03/02/2010
7671555	Motor, a method of operating a motor, and a system including a motor An air movement system including a blower and an external controller operable to receive signals from a sensing device and generate a command based on the received signals. The command includes an address. The system also includes a communication channel coupled to ...	03/02/2010
7669311	Method of manufacturing a core for an electrical machine A method of manufacturing a core for an electrical machine. The method includes providing a planar sheet of magnetic material and creating first and second generally U-shaped laminations from the planar sheet. The first and second generally U-shaped laminations resu...	03/02/2010
7613855	Modular control system and method for water heaters A water heater has a modular control system. The water heater comprises a tank, a heating element, a first controller, and a second controller. The heating element is coupled to the tank. The first controller is mounted on the tank and has a first communication port...	11/03/2009
7603204	System and method for controlling temperature of a liquid residing within a tank A system for controlling a temperature of a liquid residing within a tank comprises a temperature sensor, a temperature control element, memory, and logic. The temperature sensor is configured to detect the temperature of the liquid residing within the tank, and the...	10/13/2009
7574120	System and method for estimating and indicating temperature characteristics of temperature controlled liquids Embodiments of the present disclosure generally pertain to systems and methods for estimating and indicating temperature characteristics of temperature controlled liquids. A system in accordance with one exemplary embodiment of the present disclosure has a tank fill...	08/11/2009
7514887	Electrical machine and method of controlling the same An electrical machine having a stator and a rotor. The stator includes a core and a plurality of windings disposed on the core in a multiple-phase arrangement. The rotor is disposed adjacent to the stator to interact with the stator. A method of operating the motor ...	04/07/2009
7508156	Electrical machine having a series chopper circuit A controller and a motor assembly having a controller. The controller includes a first switch assembly in a series configuration with the motor, where the first switch assembly has a first transistor, a second switch assembly in a parallel configuration with the mot...	03/24/2009
7468570	Stator assembly for an electric machine and method of manufacturing the same A stator for a multi-phase electric machine having a plurality of core segments interconnected with one another and a plurality of coils. At least one core segment includes a plurality of teeth and a back portion that at least partially interconnects the teeth. The ...	12/23/2008
7427844	Switch assembly, electric machine having the switch assembly, and method of controlling the same A pump assembly for pumping a liquid and a method of controlling the pump assembly. The pump assembly includes a motor coupled to a pump, and an electronic switch assembly electrically connected to the motor to control the current through the motor. The electronic s...	09/23/2008
7414191	Electrical-component assembly and method of assembling the same An electrical-component assembly that includes a first housing portion that includes a wall. The wall includes a slot. At least a portion of the slot includes threads. An electrical component includes a body and a threaded protrusion. The threaded protrusion defines...	08/19/2008
7348706	Stator assembly for an electric machine and method of manufacturing the same A stator for a multi-phase electric machine having a plurality of core segments interconnected with one another and a plurality of coils. At least one core segment includes a plurality of teeth and a back portion that at least partially interconnects the teeth. The ...	03/25/2008
7332845	Spoke permanent magnet rotor A rotor includes a shalt that defines a rotor axis, a first end portion coupled to the shaft, and a pole piece that defines an enclosed aperture therethrough. A second end portion is positioned to dispose the pole piece between the first end portion and the second e...	02/19/2008
7327118	Electric machine and method of operating the electric machine A method of and apparatus for controlling an electric machine. The method can include using a controller to detect whether power is present at a first node of the controller, detect whether power is present at a second node of the controller, generate at least one s...	02/05/2008
7268505	Electric machine and method of operating the electric machine A method of and apparatus for controlling an electric machine. The method can include using a controller to detect whether power is present at a first node of the controller, detect whether power is present at a second node of the controller, generate at least one s...	09/11/2007
7247967	Electric motor having a stator An electric motor stator including a yoke having a plurality of yoke laminations. A body portion is formed as part of each of the plurality of yoke laminations. A first tooth is continuous with the body portion and is formed as part of at least a portion of the plur...	07/24/2007
7183741	Switch assembly, electric machine having the switch assembly, and method of controlling the same A pump assembly for pumping a liquid and a method of controlling the pump assembly. The pump assembly includes a motor coupled to a pump, and an electronic switch assembly electrically connected to the motor to control the current through the motor. The electronic s...	02/27/2007
7183687	Brushless permanent magnet machine with reduced cogging and torque ripple and method of producing the same An electrical machine including a rotor rotatable about an axis and a stator adapted to magnetically interact with the rotor. The stator including (t) teeth and one or more windings with compact coils disposed around the teeth. The one or more windings having (m) ph...	02/27/2007
7157827	Spoke permanent magnet rotor A spoke permanent magnet rotor that includes a shaft defining a rotor axis. A first non-magnetic end portion is coupled to the shaft and a ferromagnetic pole piece defines an aperture therethrough. A second non-magnetic end portion is positioned to dispose the pole ...	01/02/2007
7148598	Spoke permanent magnet rotors for electrical machines and methods of manufacturing same A rotor assembly for an electric motor includes a spoke permanent magnet rotor and a shaft connected thereto. The spoke permanent magnet rotor has an axis of rotation, permanent magnet material, and ferro-magnetic material. The permanent magnet material extends outw...	12/12/2006
7143503	Brushless permanent magnet machine with axial modules of rotor magnetization skew and method of producing the same An electrical machine having a machine output rating. The electrical machine including a shaft rotatable about an electrical machine axis, a rotor coupled to the shaft and rotating with the shaft, and a stator including a stator core. The rotor is configurable to in...	12/05/2006
7109621	Electric motor having a printed circuit board attached to a stator and at least partially supporting a bearing An electric motor that includes a stator, a rotor including a rotor shaft and a support member coupled to the stator. A first bearing is at least partially disposed within the support member and a printed circuit board is coupled to the stator. A second bearing is a...	09/19/2006
7102324	Fixed speed drive A controller for an electric machine. The controller includes a first voltage input that directly provides a first voltage to the electric machine, a second voltage input configured to receive a second voltage, and an inverter coupled to the second voltage input. Th...	09/05/2006
7098567	Brushless permanent magnet machine with reduced cogging and torque ripple and method of producing the same An electrical machine comprises a stator and a rotor. The stator includes a plurality of stator teeth and a winding with compact coils disposed on the teeth. The winding has (m) phases and (p) poles; where (m) is an integer and is greater than or equal to two; where...	08/29/2006
7045979	Multiple-speed electric machine and method of operating the same An electric machine assembly having an electric machine. The electric machine can include a first speed circuit and a second speed circuit. In some constructions, both speed circuits can be of a permanent split capacitor design. At least one of the speed circuits ca...	05/16/2006
7042192	Switch assembly, electric machine having the switch assembly, and method of controlling the same A compressor having a winding circuit and a driven member being driven in part by a winding of the winding circuit. The compressor further includes an auxiliary circuit connected in a parallel relationship with the winding circuit. The auxiliary circuit has an auxil...	05/09/2006
7034500	Electric drive assembly An electric drive includes a rotatable shaft, a first drive member, and a second drive member, and is supplied with power from a controller. The controller is operable to supply a first power from a power electronics converter, and a second power that is line power....	04/25/2006
6989649	Switch assembly, electric machine having the switch assembly, and method of controlling the same A switch assembly including a switch (e.g., an electronic switch) and a controller connected to the switch to control the switch. The switch assembly can also include a power supply connectable to a power source and connected to the controller. The power supply is c...	01/24/2006
6982532	Electric machine An electric machine having a stator assembly that includes a stator core and a coil supported by the stator core and a rotor assembly that includes a shaft and a rotor supported by the shaft that is in magnetic interaction with the stator core. The electric machine ...	01/03/2006
6982507	Electric motor assembly with a module attached to a motor housing An electric motor assembly including a mechanism for mounting a module housing end on a motor housing end, and a mechanism for drivingly connecting a module shaft end to a motor shaft end. The assembly further includes a mechanism for preventing the module housing f...	01/03/2006
6975049	Electrical machine and method of manufacturing the same An electrical machine including a rotor and a stator. The stator includes a core and a coil disposed on the core. In one construction, the core is generally U-shaped and comprises magnetic material. The electrical machine also includes a bridge comprising magnetic m...	12/13/2005
6943524	Switched reluctance motor regulation A motor control system that switches between voltage control and angle control. The motor control system includes a comparator, an angle control, and a voltage control. ...	09/13/2005

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Assignee: A. O. Smith Corporation