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| Number | Title | Issue Date |
| 7965476 | Current producing circuit, current producing method, and electronic device A current producing circuit includes a first current source that applies a first current, the first current being changed at a first rate with respect to a temperature, a second current source that applies a second current, the second current being changed at a seco... | 06/21/2011 |
| 7889462 | Protective circuit for protection of an appliance, in particular an electric motor, against thermal overloading At least one embodiment of the invention relates to a protective circuit for protection of an appliance, in particular of an electric motor, against thermal overloading. In at least one embodiment, the protective circuit includes a first and a second terminal for co... | 02/15/2011 |
| 7397222 | On-line testable solid state reversing DC motor starter A solid state reversing DC motor starter that is testable on-line and satisfies the requirements for nuclear safety grade equipment. The motor starter employs a bridge of solid state switches which connect the polarity of the motor winding to conform to the desired ... | 07/08/2008 |
| 7394629 | Motor overload tripping system and method with multi-function circuit interrupter A technique is provided for controlling operation of motors of different sized or ratings. Components used to apply and interrupt current to the motors may be shared in control devices for the different motors. The components may include contactors or circuit interr... | 07/01/2008 |
| 7383133 | Diffuse seismic imaging systems and methods Systems and methods are disclosed to construct subsurface images from diffuse seismic energy. Various disclosed system embodiments include multiple seismic sensors that each convert received seismic energy into one or more seismic signals. One or more processor comb... | 06/03/2008 |
| 7372676 | Motor coil-shorting detecting unit In order to be acceptable for safety critical applications, it is necessary for an electrical machine to allow continued operation despite an electrical short circuit in one of the operational phases of that electrical machine. It will be appreciated that an electri... | 05/13/2008 |
| 7365450 | Current cutoff circuit and electric steering wheel lock An electric cutoff circuit for preventing overheating of a load. The current shutoff circuit includes an FET connected to a motor circuit. A relay fault detection circuit is connected to the motor circuit to detect potential at the motor circuit. A CPU sends a contr... | 04/29/2008 |
| 7362550 | Electric motor comprising a temperature monitoring device Disclosed is an electric motor comprising a temperature monitoring device which is provided with at least two temperature sensors that have different temperature characteristics and are connected to terminal clamps by means of electrical wires, whereby it is possibl... | 04/22/2008 |
| 7355826 | Power supply apparatus capable of detecting abnormality of current flowing through drive circuit A current detection unit starts sampling of a motor current at the timing when the motor current has exceeded a threshold value, and holds a maximum motor current value for each prescribed operation cycle. An abnormality determination unit determines whether the max... | 04/08/2008 |
| 7355139 | Miniature circuit breaker A miniature circuit breaker includes an elastic contact piece to contact with two terminals of a circuit, thereby electrically connecting the circuit. One end of the elastic contact piece fixed to a terminal is a fixed end, and the other end of the elastic contact p... | 04/08/2008 |
| 7336455 | System and method for proactive motor wellness diagnosis The present invention is directed to a power meter or overload relay including a housing and a plurality of sensors configured to monitor operation of a motor. A processor disposed within the housing and configured to receive operational feedback from the plurality ... | 02/26/2008 |
| 7336048 | Method for operating a power tool In a method for operating a power tool with an energy accumulator, in particular a rechargeable energy accumulator, which supplies power to an electric drive motor, a clock frequency is generated by an electronic unit, with which a gate of a MOSFET—which supplies ... | 02/26/2008 |
| 7307396 | Overload protection system for an electrical device A protection system for an electrical device may include at least one temperature sensitive element located in a region adjacent to a component of the electrical device and configured to provide an output related to an actual temperature in the region. The system ma... | 12/11/2007 |
| 7304561 | Motor overload protector An enclosed motor protector has a housing formed by a base (10) and a cover (12) received on the base and enclosing a recess (10a) formed in the base. A first terminal (14) extends through an opening in the housing and mounts a sta... | 12/04/2007 |
| 7304447 | Motor controller A motor controller includes: a motor control part for driving and controlling a motor; an estimated temperature computing part for computing an estimated temperature of a winding of the motor; and a motor protecting part for protecting the motor from being burned wh... | 12/04/2007 |
| 7294142 | Selective organ cooling catheter with guidewire apparatus and temperature-monitoring device A catheter and method for heating or cooling a surrounding fluid in a feeding vessel in a vasculature of a patient. The catheter includes a heat transfer element shaped and arranged to create turbulence in a surrounding fluid. A guidewire tube runs substantially par... | 11/13/2007 |
| 7268987 | Motor starter device A motor starter device having an elongated base provided with power poles acted upon by a contactor part and a protection part. The base houses power current lines 15 and their control mechanism 20. Two movable linkages (30, 40) are associated w... | 09/11/2007 |
| 7260452 | Apparatus, method and computer program product for monitoring AC line current through the step start resistors of a high voltage power supply A circuit to monitor ac line current through resistors employed to provide a ‘step start’ in a power supply, including means to monitor the current flowing through the step start resistors, comprising a peak detector, a sample and hold circuit, an analog to digi... | 08/21/2007 |
| 7259946 | Integrated electric motor and control system and method An electrically and thermally protected electrical machine is disclosed. The electrical and thermal protection is provided by one or more control components placed in a conduit box of the electrical machine to disrupt power transmission to the electrical machine upo... | 08/21/2007 |
| 7253998 | Starting and protection device, in particular for refrigerator motors, fitted with a shaped casing so as to keep the protector separate from the other components A starting and protection device for refrigerator motors having a thermal protection device and a PTC resistor, includes a common casing containing the protector and the PTC resistor. The casing is formed by two separate bodies designed to house the protector and th... | 08/07/2007 |
| 7254514 | Method and system for predicting remaining life for motors featuring on-line insulation condition monitor A method and a system for determining a remaining time before failure of a motor system are provided. The method and the system determine the remaining time before failure based on historical motor data and operational parameter data associated with the motor system... | 08/07/2007 |
| 7240508 | Connecting package for refrigerator compressor Disclosed is a connecting package for a refrigerator compressor. The connecting package includes a base including an overload protector mounting section and a motor starter relay element mounting section and having first to third pin connecting ports connected to a ... | 07/10/2007 |
| 7222050 | Apparatus for determining overheating of motor, method for determining overheating of motor, computer-readable medium, motor control apparatus, motor control method, and printing apparatus A temperature condition of a motor is estimated more accurately based on a drive amount of the motor. An apparatus for determining overheating of a motor, includes: an information obtaining section that obtains information about a drive amount of a motor and informa... | 05/22/2007 |
| 7206176 | Circuit and method for protecting against overload of an electric motor The invention relates to a circuit (1) for protecting against overload of an electric motor (2), more particularly an electrically powered air blower for a vehicle, with the purpose of providing sufficient and appropriate protection even when several e... | 04/17/2007 |
| 7196490 | Variable speed motor A variable speed motor includes first and second main windings wound on a stator, and a relay for performing a switching operation between serial/parallel connections of the first and second main windings to control motor speed. The variable speed motor further incl... | 03/27/2007 |
| 7189111 | Stand-off bracket for securing a wire harness connector assembly to DC electric motor and associated method An assembly and associated method for securing a connector to an electric motor. An elongated bracket has a specified shape and size and is constructed of a spring steel material. A pair of screws secure the bracket at a first end to a supporting location associated... | 03/13/2007 |
| 7167348 | Miniaturized motor overload protector A Digital Programmable Motor Overload Protector includes a base module and a detachable, removable user interface module interfaced through a serial communications link. The base module provides motor overload analysis through a programmable Digital Signal Processor... | 01/23/2007 |
| 7162883 | Compressor diagnostic method A method includes determining base-line operating parameters for a compressor, generating a high-side signal indicative of high-side compressor operating conditions, generating a low-side signal indicative of low-side compressor operating conditions, and comparing t... | 01/16/2007 |
| 7161318 | Regulating device for a motor The invention relates to a regulating device (1) for a motor, comprising a housing (2) which can be associated with said motor and in which a control unit (5) and an actuator (6) are arranged. Due to heat-related reasons, said device can ... | 01/09/2007 |
| 7150604 | Electric box for compressor assembly A compressor assembly includes a compressor having a known vibration frequency when operated at normal operating parameters; and an electric box assembly having a frame member mounted to the compressor for containing electrical components related to the compressor, ... | 12/19/2006 |
| 7126368 | System and method for detecting motor coil-to-coil faults A system and method detects coil-to-coil faults in an electric motor having a plurality of coils. The method includes applying a square wave signal to a first coil of the motor, connecting a capacitor and a resistor between ground potential and a second coil of the ... | 10/24/2006 |
| 7116588 | Low supply voltage temperature compensated reference voltage generator and method A reference voltage generator uses a conventional forward junction voltage generating device and a conventional thermal generator to generate a thermal voltage. The forward junction voltage and the thermal voltages have respective thermal sensitivities that act oppo... | 10/03/2006 |
| 7111983 | Temperature detection method and apparatus for inverter-driven machines 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, includin... | 09/26/2006 |
| 7113381 | Overcurrent protection circuit including auto-reset breaker and PTC resistor An overcurrent protection circuit for low-voltage, high-current electrical systems comprises a Positive Temperature Coefficient (PTC) resistor in series with an auto-reset thermal breaker. The breaker allows for intermittent current within an assumed product usage d... | 09/26/2006 |
| 7112900 | Method and system for sensing switch position to prevent inadvertent startup of a motor A method for preventing sudden inadvertent operation of a motor of a tool or appliance when the motor is initially electrically connected to a power source while an On/Off switch for controlling the motor is in a closed (i.e. ‘On’) position. The method includes ... | 09/26/2006 |
| 7109840 | Protector for electrical apparatus A protector (10) particularly useful for wye-connected three phase electrical motors has a header (12) mounting first and second terminal pins (14) to which L-shaped pin heaters (16) are mounted along with stationary electrical contacts (... | 09/19/2006 |
| 7102481 | Low current electric motor protector A low current motor protector (10, 10′) has an oblong metal housing (12) defining a switch chamber and formed with an open end. The housing has opposing flange portions extending transversely from the open end. Spaced apart lid portions (18... | 09/05/2006 |
| 7102314 | Brushless motor control apparatus having overheat protecting function A brushless motor control apparatus detects a phase current flowing in a brushless motor, converts the phase current to a vector current including a d-axis current of a magnetic flux direction component and a q-axis current of a torque direction component orthogonal... | 09/05/2006 |
| 7091691 | Variable speed motor An outer-rotor variable-speed motor, to which single-phase AC power is applied and on which a rotor is provided outside a stator, comprises first and second main windings provided on a stator of the motor to form a plurality of poles, a frequency detector for detect... | 08/15/2006 |
| 7088563 | Internal motor protector for hermetic compressor A protective device (1) which is attached on an internal side of a compressor, includes a housing (10) of an insulating material, a motor protector (20) placed on the housing (10) and having a thermally responsive switch inside, a fuse de... | 08/08/2006 |
