| Patent Number |
Title Of Patent |
Date Issued |
| D576941 |
Electric motor |
September 16, 2008 |
|
| 7419305 |
Sealing system for bearing assembly |
September 2, 2008 |
| A sealing assembly for a bearing assembly. The sealing system comprising a removable cover and a rotatable member. The bearing assembly also comprising a bearing insert and a bearing housing. The removable cover is securable to the bearing housing. The rotatable member is secured to the |
| 7413054 |
Oil circulation retention system and method |
August 19, 2008 |
| A bearing lubrication (oil circulation) system having a check valve configuration for preventing overflow of an oil reservoir or tank. The pressurized oil circulation system may comprise a pump that pressurizes oil from the tank and circulates the oil through a supply conduit to a be |
| 7385328 |
Cogging reduction in permanent magnet machines |
June 10, 2008 |
| A permanent magnet motor having a rotor and a stator and configured such that when the leading edge of each pole of the rotor aligns with a stator tooth the trailing edge of that pole is generally not aligned with a stator tooth. |
| 7382138 |
System and method for non-destructive testing of rotors |
June 3, 2008 |
| A method is provided for testing an electrical characteristic of a rotor. In one embodiment, the method may include applying current to the rotor, measuring voltage drop between first and second positions on the rotor, and evaluating the electrical characteristic of the rotor based at le |
| 7362017 |
Motor with integrated drive unit and shared cooling fan |
April 22, 2008 |
| An integrated motor and drive assembly includes a motor, a fan, and a drive unit. The motor is responsive to at least one drive signal. The fan is axially aligned with the motor and operable to generate a cooling flow. The drive unit is axially aligned with the fan and operable to ge |
| 7348702 |
Apparatus and method for flywheel based cooling |
March 25, 2008 |
| In accordance with exemplary embodiments, the present invention provides a transient power source that includes a flywheel that stores kinetic energy. In the event of a loss of main or operating power, the kinetic energy stored in the flywheel is converted into electrical energy. As one |
| 7336013 |
High mechanical strength electrical connection system and method |
February 26, 2008 |
| In accordance with one embodiment, the present technique provides a bushing that is configured to electrically and mechanically couple a conductor bar of a rotor assembly to an end ring of the rotor assembly. The exemplary bushing has an interior surface that is configured to abut ag |
| 7314330 |
Bushing system for power transmission products |
January 1, 2008 |
| A system is provided for securing two ends of a rotating member, such as a shaft, with respect to a non-rotating member, such as a mounting hub. Inner and outer sleeves have tapered surfaces and are positioned about the rotating member and provided within a bore of the non-rotating m |
| 7305767 |
Shaft and hub mounting system and method |
December 11, 2007 |
| A system is provided for securing a rotating member with respect to a non-rotating member. A hollow member, such as a mounting hub or an inner ring of a bearing assembly, includes an extension having an annular outer groove. One or more tapered sleeves serve to lock the hollow member abo |
| 7299915 |
Motorized pulley |
November 27, 2007 |
| The present technique, in accordance with one exemplary embodiment, relates to a motorized pulley. The exemplary motorized pulley includes a rim or housing inside of which are disposed an electric motor and a gear assembly, which is configured to transfer torque of the electric motor to |
| 7291958 |
Rotating back iron for synchronous motors/generators |
November 6, 2007 |
| The present invention relates to systems and methods for a synchronous motor/generator including at least one back iron element which is rotated along with a rotor of the motor/generator. Rotation of the back iron(s) mitigates eddy current losses and improves efficiency in the motor/ |
| 7252118 |
Motor coil winding and insertion method and apparatus |
August 7, 2007 |
| According to one aspect, the present technique provides methods and apparatus for inserting coil windings into a stator. Advantageously, the windings may be wound in a vertical configuration to facilitate insertion of the windings into stator slots. Moreover, the exemplary embodiment |
| 7217193 |
Shaft coupling system and method |
May 15, 2007 |
| A coupling assembly having an integral flange hub configured to bear against a flexible coupling element, and an external flange element configured to engage the hub to exert compressive force on the flexible coupling element. The assembly further includes a nut having inner threads |
| 7207741 |
Bushing system for power transmission products |
April 24, 2007 |
| A system is provided for securing two ends of a rotating member, such as a shaft, with respect to a non-rotating member, such as a mounting hub. Inner and outer sleeves have tapered surfaces and are positioned about the rotating member and provided within a bore of the non-rotating m |
| 7197811 |
Method for separating stator windings of an electric motor during manufacture |
April 3, 2007 |
| A technique for separating the stator leads of an electric motor during the manufacturing process. The technique comprises a system having a lead gathering assembly, a lead separator, and a drive mechanism. The lead gathering assembly is adapted to gather together a plurality of stator |
| 7184902 |
Motor parameter estimation method and apparatus |
February 27, 2007 |
| A system and method for establishing estimated values of electrical parameters of a motor. The electrical parameters may be established from motor databases, measured input electrical data, measured output data, and various estimations to account for unknown motor parameters. Compens |
| 7164243 |
System and method for establishing motor efficiency during balanced or unbalanced operating cond |
January 16, 2007 |
| A system and method for establishing a plurality of operating parameters of a multiphase motor. The plurality of electrical parameters may be established from stator resistance data and electrical input data. The system and method may be used to decompose the electrical input data into |
| 7147926 |
Corrosion-resistant and stain-resistant component and method for manufacturing same |
December 12, 2006 |
| A multi-layer corrosion protection system and a method for applying the multi-layer corrosion protection system. The system comprises a corrosion-resistant layer plated onto a metallic substrate. The corrosion-resistant layer may be deposited using an autocatalytic (electroless) proc |
| 7140090 |
Method of manufacturing an electric motor |
November 28, 2006 |
| A technique for securing a conduit box to a housing of an electric motor is disclosed. The technique includes forming a hollow extension from a surface of the conduit box. The conduit box is placed on a motor frame so that the hollow extension is inserted into a hole in the motor frame t |
| 7135834 |
Modified field oriented control |
November 14, 2006 |
| In accordance with certain embodiments, the present technique provides a reduced current field-oriented-control scheme. For example, the present technique provides a method of controlling an induction device in which a predetermined reduction factor is employed to reduce the flux-current |
| 7135830 |
System and method for identifying operational parameters of a motor |
November 14, 2006 |
| A system and method for establishing estimated values of electrical parameters of a motor. The electrical parameters may be established from stator resistance data and motor data obtained at a single load on the motor. The electrical parameters also may be established without stator |
| 7122932 |
Rotor for an induction device |
October 17, 2006 |
| According to one embodiment, the present invention provides a rotor assembly. The exemplary rotor assembly includes a plurality of rotor laminations, which cooperate to form a rotor core, capped at each end by end members. Extending through the rotor core and the end members, a plura |
| 7111983 |
Temperature detection method and apparatus for inverter-driven machines |
September 26, 2006 |
| A resistance temperature detector device and system are provided for measuring the temperature adjacent to windings within a stator assembly. The resistance temperature detector comprises a resistive element enclosed within a plurality of insulative layers, including insulation panel |
| 7100747 |
Integral motor brake manual release mechanism |
September 5, 2006 |
| The present invention relates to a manual brake release mechanism for an electromagnetic brake of an electronic motor. The manual brake release mechanism includes a cam and lever assembly operable to move an armature plate away from a friction disk, thereby, disengaging an electromagneti |
| 7099852 |
Detection of pump cavitation/blockage and seal failure via current signature analysis |
August 29, 2006 |
| A system and method is provided for monitoring the operating condition of a pump by evaluating fault data encoded in the instantaneous current of the motor driving the pump. The data is converted to a frequency spectrum which is analyzed to create a fault signature having fault attribute |
| 7095153 |
Extended core for motor/generator |
August 22, 2006 |
| An extended stator core in a motor/generator can be utilized to mitigate losses in end regions of the core and a frame of the motor/generator. To mitigate the losses, the stator core can be extended to a length substantially equivalent to or greater than a length of a magnetically ac |
| 7027938 |
Packaging for dynamoelectric machine diagnostic system |
April 11, 2006 |
| A machine diagnostic system for on-line diagnosis of a machine including a package for a machine diagnostic module that collects data relating to operation of the machine. The package is mounted to an outer mounting surface of the machine and includes a container which contains the m |
| 6988832 |
Bearing insert with controlled endplay |
January 24, 2006 |
| A system and method is provided to accommodate positional variations in a bearing assembly, which has a clearance adjustment assembly for setting the roller clearance therein. The bearing assembly has multiple rows of tapered rollers disposed circumferentially between an inner sleeve and |
| 6980298 |
System for monitoring sealing wear |
December 27, 2005 |
| A system for determining at least one condition of a seal including an optical fiber for transmitting light from a light source. The optical fiber is embedded in the seal and operatively coupled to an interferometric system. The interferometric system is operatively coupled to a proc |
| 6941644 |
Method for winding segments of a segmented wound member of an electromechanical device |
September 13, 2005 |
| A method of constructing a segmented wound member of an N phase electromechanical device comprises winding N sets of segments and combining the N sets of segments in a common circular arrangement to form the wound member. The N sets of segments are wound with a single continuous leng |
| 6939053 |
System and method for mounting a shaft within a hollow member |
September 6, 2005 |
| A system is provided for securing a rotating member with respect to a non-rotating member. A hollow member, such as an inner ring of a bearing assembly, includes an extension having an annular outer groove. A tapered sleeve serves to lock the hollow member about a mechanical component, s |
| 6938322 |
Method of making an electric motor stator assembly having a novel winding arrangement |
September 6, 2005 |
| A method is disclosed for making an electric motor stator. In accordance with the method, coil groups are inserted for different electrical phases through a first and second ends of a stator core. An insertion tool is used for insertion of the coil groups independently. Coils for individ |
| 6930427 |
Electric apparatus having a stator with insulated end laminations within the central opening of |
August 16, 2005 |
| A technique is provided for manufacturing a stator of an electrical machine, such as a motor. The stator is formed by using thin end plates or laminations that are attached to each other by rods around a group of laminations. The end plates maintain pressure on the laminations. Within |
| 6912927 |
Modular-flexible wormshaft assembly |
July 5, 2005 |
| A worm shaft is provided with an intermediate worm thread section between first and second end structures, wherein at least one of the first and second end structures has a coupling structure for a desired extension of a plurality of modular worm shaft extensions. The desired extension a |
| 6891308 |
Extended core for motor/generator |
May 10, 2005 |
| An extended stator core in a motor/generator can be utilized to mitigate losses in end regions of the core and a frame of the motor/generator. To mitigate the losses, the stator core can be extended to a length substantially equivalent to or greater than a length of a magnetically ac |
| 6886985 |
Auxiliary fan cooling of bearing housings |
May 3, 2005 |
| A temperature controlled bearing includes a bearing element disposed within a temperature conductive housing for receiving and facilitating the rotation of a shaft. An oil sump may be formed within the housing or bearing which contains a supply of lubricant for the bearing. At least one |
| 6862538 |
Induction motor module and motor incorporating same |
March 1, 2005 |
| A system and method for establishing estimated values of a plurality of electrical parameters of a motor. The plurality of electrical parameters may be established from stator resistance data and electrical input data obtained with no load on the motor. The plurality of electrical parame |
| 6857784 |
Adapter mounted bearing assembly |
February 22, 2005 |
| A system and method is provided for setting the roller clearance of a multi-row tapered roller bearing assembly via a clearance adjustment assembly and an outer retaining sleeve. The bearing assembly has multiple rows of tapered rollers disposed circumferentially between an inner sleeve |
| 6857179 |
Method for making an electric motor stator |
February 22, 2005 |
| A technique for making a stator for an electric motor or similar machine includes disposing a plurality of concentric coils in a stator core such that leads exit both ends of the stator core. The coils are disposed in accordance with a winding pattern that is particularly suited for maki |
| 6849804 |
Method system for insulating electrical windings |
February 1, 2005 |
| A technique and system for insulating conductors is provided in which insulating tubes are formed by winding insulating tape on a mandrel, with two or more layers of tape being wound in the same or opposite helical directions. The layers are bonded to one another and multiple tubes are |
| 6844648 |
Electric motor stator and motor incorporating same |
January 18, 2005 |
| A winding pattern and technique for a stator of an electric motor is provided. The pattern is particularly well-suited for forming a four-pole, three-phase machine. The winding pattern permits concentric windings to be fully installed in slots of a stator core by machine in multiple step |
| 6836204 |
Electric motor winding insulation method and apparatus |
December 28, 2004 |
| A technique is provided for insulating a winding or coil for an electrical machine such as a motor. The coil is wound and placed in a taping station. Multiple layers of insulating tape are applied along an end region with leads bent back from the end region. The taping station permits th |
| 6819018 |
System and method of reducing bearing voltage |
November 16, 2004 |
| Technique for reducing bearing current discharges in a system by increasing the surface area between the shaft and the frame of the system and thereby increasing the rotor to frame capacitance. |
| 6798096 |
Thermal barrier and cooling air deflector for totally enclosed motor |
September 28, 2004 |
| The present invention provides for a system and method for facilitating cooling of a totally enclosed motor. A first thermal barrier is coupled to a first end bracket and is operable to insulate bearings from internal heat produced by the motor. Either an external fan located opposite th |
| 6796739 |
Torsional joint assembly and method of making same |
September 28, 2004 |
| A torsional joint assembly and method of making same having members of formed of dissimilar materials bonded together at calculated angles to result in essentially singularity-free joints. |
| 6781264 |
Integral field cup and front end shield for an electric brake motor |
August 24, 2004 |
| The present invention provides for a system and method for integrating an electric motor with an electromagnetic brake. An integral field cup and front end shield is employed to function as both a brake field cup and a motor end shield. The integral field cup and front end shield houses |
| 6768411 |
Electric motor stator assembly having novel winding arrangement and method of making same |
July 27, 2004 |
| A stator assembly for use in an electromechanical machine includes an improved concentric winding arrangement. Groups of concentric coils are alternately inserted from both ends of the stator core. In other words, a first phase group is inserted from one end. The stator core is then |
| 6745640 |
Method for manufacturing a worm shaft for a gearbox and gearbox incorporating same |
June 8, 2004 |
| A method for manufacturing worm shafts for a gearbox. The method comprises using a common worm shaft blank to produce worm gears for all of the gear ratios of a family of gearboxes. The common worm shaft blank has a defined outer diameter. The method may comprise establishing an axial pi |
| 6734584 |
Thermal barrier and cooling air deflector for totally enclosed motor |
May 11, 2004 |
| The present invention provides for a system and method for facilitating cooling of a totally enclosed motor. A first thermal barrier is coupled to a first end bracket and is operable to insulate bearings from internal heat produced by the motor. Either an external fan located opposite th |
