| Patent Number |
Title Of Patent |
Date Issued |
| RE36340 |
Centrifugally cast pipe |
October 12, 1999 |
| A centrifugally cast plastic pipe comprised of a polymer derived from monomers polymerized in bulk is provided. A pressurized cylindrical mold provides smooth inner and outer surfaces. Pipes with a wall thickness of from 1/8 inch to 3 inches and an outer diameter of 1 inch to 12 feet are |
| 7613855 |
Modular control system and method for water heaters |
November 3, 2009 |
| 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. The second controlle |
| 7610671 |
Method for assembling an electric motor using a slip fit tolerance ring |
November 3, 2009 |
| An electric motor includes a stator, a housing supporting the stator and having a bearing seat with an inner surface and an inner end, a bearing having an outer surface, a shaft rotatably supported by the bearing, and a rotor supported by the shaft. The motor also includes a tolerance ri |
| 7603204 |
System and method for controlling temperature of a liquid residing within a tank |
October 13, 2009 |
| 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 temperature control |
| 7574120 |
System and method for estimating and indicating temperature characteristics of temperature contr |
August 11, 2009 |
| 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 filled at least partially |
| 7541701 |
Totally enclosed fan cooled motor |
June 2, 2009 |
| A motor assembly comprises a first end frame, a second end frame including at least one air outlet aperture, an air shroud surrounding a stator between the first end frame and the second end frame, the air shroud cooperating with the stator to form at least one air passage, and coope |
| 7514887 |
Electrical machine and method of controlling the same |
April 7, 2009 |
| 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 includes applying a |
| 7508156 |
Electrical machine having a series chopper circuit |
March 24, 2009 |
| 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 motor, where the seco |
| 7508103 |
Electric machine having a tilted voltage adjustment |
March 24, 2009 |
| A terminal board includes an attachment portion engageable with an end cap and defines an attachment plane that is substantially parallel to an end plane defined by the end cap, and a first terminal portion adapted to receive a first terminal wire. The first terminal portion defines a fi |
| 7468570 |
Stator assembly for an electric machine and method of manufacturing the same |
December 23, 2008 |
| 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 back portion of each |
| 7427844 |
Switch assembly, electric machine having the switch assembly, and method of controlling the same |
September 23, 2008 |
| 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 switch assembly include |
| 7414191 |
Electrical-component assembly and method of assembling the same |
August 19, 2008 |
| 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 a longitudinal axis |
| 7355520 |
Motor diagnostic indicator |
April 8, 2008 |
| A motor receiving power from a power source. The motor comprises a motor housing, a stator at least partially disposed within the motor housing and supported by the motor housing, a rotor disposed to magnetically interact with the stator, and a visual indicator integrated with the ho |
| 7348706 |
Stator assembly for an electric machine and method of manufacturing the same |
March 25, 2008 |
| 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 back portion of each |
| 7327118 |
Electric machine and method of operating the electric machine |
February 5, 2008 |
| 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 signal based at least i |
| 7307366 |
Brushless permanent magnet machine with axial modules of rotor magnetization skew and method of |
December 11, 2007 |
| 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 include a first roto |
| 7271560 |
Assembly for moving a barrier and method of controlling the same |
September 18, 2007 |
| An assembly for moving a barrier from one of a closed position and an opened position to the other of the closed position and the opened position. The assembly includes a motor to supply one of a first power and a second power to the barrier. The assembly also includes a controller t |
| 7268505 |
Electric machine and method of operating the electric machine |
September 11, 2007 |
| 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 signal based at least i |
| 7259487 |
Electric machine including circuit board mounting means |
August 21, 2007 |
| 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 may include a sing |
| 7247967 |
Electric motor having a stator |
July 24, 2007 |
| 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 plurality of yoke lami |
| 7247964 |
Electrical machine with magnetized rotor |
July 24, 2007 |
| An electrical machine comprises a stator and a rotor. The rotor is adapted to magnetically interact with the stator to promote rotation of the rotor about an axis. The rotor includes a rotor core and a plurality of magnetized arcs supported by the rotor core. The plurality of magnetized |
| 7183741 |
Switch assembly, electric machine having the switch assembly, and method of controlling the same |
February 27, 2007 |
| 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 switch assembly include |
| 7183687 |
Brushless permanent magnet machine with reduced cogging and torque ripple and method of producin |
February 27, 2007 |
| 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) phases and (p) poles |
| 7157827 |
Spoke permanent magnet rotor |
January 2, 2007 |
| 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 piece between the |
| 7148598 |
Spoke permanent magnet rotors for electrical machines and methods of manufacturing same |
December 12, 2006 |
| 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 outwardly relative to the |
| 7143503 |
Brushless permanent magnet machine with axial modules of rotor magnetization skew and method of |
December 5, 2006 |
| 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 include a first roto |
| 7109621 |
Electric motor having a printed circuit board attached to a stator and at least partially suppor |
September 19, 2006 |
| 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 at least partially disp |
| 7102324 |
Fixed speed drive |
September 5, 2006 |
| 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. The inverter is conf |
| 7098567 |
Brushless permanent magnet machine with reduced cogging and torque ripple and method of producin |
August 29, 2006 |
| 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 (p) is an integer, is |
| 7045979 |
Multiple-speed electric machine and method of operating the same |
May 16, 2006 |
| 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 can include a switch |
| 7042192 |
Switch assembly, electric machine having the switch assembly, and method of controlling the same |
May 9, 2006 |
| 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 auxiliary circuit element |
| 7034500 |
Electric drive assembly |
April 25, 2006 |
| 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. Supplying the first |
| 6989649 |
Switch assembly, electric machine having the switch assembly, and method of controlling the same |
January 24, 2006 |
| 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 configured to recei |
| 6982532 |
Electric machine |
January 3, 2006 |
| 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 may include a sing |
| 6982507 |
Electric motor assembly with a module attached to a motor housing |
January 3, 2006 |
| 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 from rotating relat |
| 6975049 |
Electrical machine and method of manufacturing the same |
December 13, 2005 |
| 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 material. The bridge co |
| 6943524 |
Switched reluctance motor regulation |
September 13, 2005 |
| 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. |
| 6940198 |
Brushless permanent magnet machine with reduced cogging and torque ripple and method of producin |
September 6, 2005 |
| An electrical machine comprises a stator and a rotor. The rotor 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 (p) is an integer, is |
| 6933640 |
Electric machine and method of assembling the same |
August 23, 2005 |
| An electric machine having a stator, a rotor, a first intermediate portion, an end cap, a second intermediate portion, and a second end cap. The first and second intermediate portions partially cover the stator. The electric machine further includes a fastener that couples the first and |
| 6933638 |
Electric motor having a reverse air flow cooling system |
August 23, 2005 |
| An electric motor having a reverse air flow cooling system that eliminates the need to extend lead wires past the fan. The electric motor includes a fan positioned on the lead-end of the motor to move air through a housing of the electric motor in a direction generally defined from the s |
| 6926502 |
Combination shield and conduit box cover |
August 9, 2005 |
| An apparatus comprising a driven element, a driving element operably coupled to the driven element, and a shield coupled to the driving element such that the shield at least partially covers at least one of the driven element and the driving element. The driven element includes a housing |
| 6882070 |
Electric motor having a terminal board |
April 19, 2005 |
| An electric motor including having a housing, a stator fixed relative to the housing, a shaft rotatable about a motor axis, a rotor supported by the shaft for rotation with the shaft relative to the stator, a terminal board fixed relative to the housing, and first and second electrical |
| 6873131 |
Dual voltage electric motors |
March 29, 2005 |
| An electric motor selectively connectable to receive one of a plurality of supply voltages, the plurality of supply voltages comprising a low supply voltage and a high supply voltage. The motor can comprise a stator having a first winding and a second winding, a shaft rotatable about a m |
| 6867525 |
Brushless permanent magnet machine with axial modules of rotor magnetization skew and method of |
March 15, 2005 |
| 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 include a first roto |
| 6857989 |
Treadmill including a motor having an outer rotor |
February 22, 2005 |
| A treadmill including a frame, a power supply, and a motor coupled to the frame and to the power supply. The motor includes a shaft and a stator fixedly coupled to the frame, at least one bearing coupled to the shaft, and a rotor coupled to the at least one bearing. The rotor includes at |
| 6856115 |
Method of and apparatus for controlling the operation of an induction motor using a model of the |
February 15, 2005 |
| A controller for a motor and a method for controlling the operation of the motor. The controller includes a model of the motor, where the model is utilized to determine modeled values of first and second motor variables. An estimated value of slip is adjusted based at least in part on a |
| 6800975 |
Electric motor shaft access cover |
October 5, 2004 |
| An electric motor having a shaft access cover. The electric motor includes a housing that defines an aperture, a stator fixed relative to the housing, a shaft rotatable relative to the housing so the aperture provides access to an end portion of the shaft, and a rotor connected to th |
| 6788022 |
Electric motor |
September 7, 2004 |
| An electric motor controllable to operate at a number of distinct output speeds. The electric motor includes a single set of mechanical parts in combination with a multiple sets of electromagnetic parts having different configurations, where the number of electromagnetic parts correspond |
| 6766573 |
Electric motor bonding apparatus |
July 27, 2004 |
| An electric motor having an integrally formed bonding apparatus that allows an installer to quickly and efficiently bond the electric motor to a bonding grid of a bonding area. A fastener having a head is inserted into an aperture of the housing of the electric motor such that a bonding |
| 6745456 |
Apparatus and method of making a rotor core with elimination of outer periphery machining |
June 8, 2004 |
| An apparatus and an associated method are utilized to make a rotor core. The apparatus includes a support for supporting a lamina stack that has an axis extending along the stack. The apparatus includes a plurality of collets. A collet moving mechanism moves the collets radially inward |
