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Document Title |
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8084967 |
Motor controller and printer
A motor controller is provided. The motor controller includes a motor drive unit that drives a plurality of motors; a thermal shutdown unit that is provided in the motor drive unit and that stops...
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8085514 |
Modular on-machine controller
A modular control assembly is provided for on-machine control of a desired machine. One embodiment has a machine mountable base and a replaceable control unit, wherein the machine mountable base...
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8049469 |
Safety circuit and battery pack using the same
A safety circuit includes a thermal fuse electrically connected in a main current path so that an electric current flowing in the main current path flows through the thermal fuse; a switching...
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7970650 |
POS device
A POS device includes a rotation shaft vertically fixed, a rotary plate provided so as to be rotatable about the rotation shaft, a rotating portion placed on the rotary plate and having at least a...
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7954334 |
Inverter system and vehicle
An inverter system having a semiconductor device, and a railway vehicle using this inverter, provide a more accurate determination of whether an abnormal heat generation from the inverter is...
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7839108 |
Electric motor stator winding temperature estimation
A temperature estimation controller and methods are provided for controlling a torque command to prevent overheating of one or more of a plurality of phases of a permanent magnet motor. The...
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7800872 |
Switch-state monitoring device
Provision is made for a switch-state monitoring device that not only monitors the state of a switch but also prevents a motor burnout. A switch-state monitoring device for a switch that opens and...
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7486490 |
Actuator for the actuation of a clutch and/or a gear mechanism
An actuator for a clutch or gear mechanism in a motor vehicle comprises an electric motor and an incremental encoder. The encoder comprises a position measurement signal output at which a position...
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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...
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7049518 |
Shielded cable, process for assembling the same and compressor unit having the same
A shielded cable has a cable body providing an electromagnetic shielding portion around a conductive wire thereof, a connector fitted to one end of the cable body and having a casing including a...
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7005827 |
Starting circuit for single-phase induction motor
A starting circuit for a single-phase induction motor includes a motor starting positive characteristic thermistor and a triac arranged in a series connection, and a triac control positive...
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6989976 |
Overcurrent protection circuit
A resistance value variable element (18a) changes its resistance value in response to abnormal exothermic heat caused by an overcurrent of an external electrical equipment (3). A bias voltage...
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6847187 |
Detection of loss of cooling air to traction motors
A thermal protection apparatus for an AC traction motor including a stator, a rotor, a blower fan and an inverter includes a method and apparatus for predicting the motor temperature assuming that...
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6542846 |
Thermal management system for a portable ultrasound imaging device
A thermal management system for a portable battery powered electronic device, and particularly, a portable battery powered ultrasound device, which controls the temperature of the device such that...
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6490158 |
Motor start capacitor assembly
A motor start capacitor assembly for providing an enclosure for a motor start capacitor and a thermistor electrically connected in series. The enclosure is constructed of a low temperature plastic...
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6452359 |
Starting system for an electric motor
An improvement in a starting system for an electric motor, which drives a hermetic compressor of refrigeration and comprises a main winding (1), and an auxiliary winding (2), which are energized by...
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6317304 |
Assembly of electric motor-controlling components
An assembly of starting elements and protectors for use with electric motors. One of the objectives is to provide an assembly which can be quickly and easily adapted to the housing of a compressor....
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6249104 |
Cutout start switch heating
A motor start switch includes a temperature responsive resistor element and a cutout switch electrically connected in series with a start winding of an electric motor. The cutout switch is in...
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6236550 |
Motor activating circuit device and refrigerator
A positive thermistor device used in a motor activating circuit device of a refrigerator for example includes a positive thermistor element having a pair of opposed electrodes, each of which...
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6169648 |
Electronic motor protection system
An electronic motor protection system which protects electric motors against various fault conditions such as over-temperature (12) of the individual windings of the motor and low voltage (18, 20)....
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6107669 |
Load actuating semiconductor circuit having a thermally resistive member
An intelligence power device (IPD), having a temperature-sensitive and heat-damage protecting function, is used as a semiconductor relay which controls load current supplied to an electric load. A...
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6090735 |
Semiconductive ceramic composition and semiconductive ceramic element using the same
A semiconductive ceramic composition having negative resistance-temperature characteristics, wherein the composition comprises lanthanum cobalt oxide as the primary component, and, as secondary...
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5867083 |
Protective device for surge current protection of associated equipment in communications systems
A small-size high-performance electronic protective device (10) is provided for use in protecting communication equipment including an exchange servicing module against application of abnormal...
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5852539 |
Overheat circuit for a utility vehicle
An overheat protection circuit includes a resistor having a first lead connected to the engine temperature switch and the power take off (PTO) relay coil circuit. The second lead of the resistor is...
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5793171 |
Control circuit for controlling the driving of a DC motor for a mirror assembly of a vehicle
When a switch 12 is turned on, a relay coil 14b is excited by a current generated at the very moment when electric power of a dc power source 11 is supplied to a condenser 16 for actuation....
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5784232 |
Multiple winding sensing control and protection circuit for electric motors
The present invention involves control and protection circuit for a compressor motor which includes an inductively activated contactor for controlling the flow of current to the compressor motor....
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5729416 |
Motor starter and protector module
A combination motor starter and protector module is described. The base member, in one embodiment, forms a motor protector compartment and a motor starter compartment. The motor protector, in one...
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5645746 |
Use of PTC devices
Use of PTC circuit protection devices in motor vehicle wiring systems. The devices can replace some or all of the fuses conventionally used. Preferred devices contain PTC conductive polymers....
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5617281 |
Low cost circuit controller
A circuit controller for selectively connecting a power source to a load includes a switching mechanism, which selectively connects the power source to the load and switches a current which flows...
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5612847 |
Power window circuit board overcurrent protection
A vehicle door (22) has a window (24) capable of being opened and closed. A master power window switch assembly (26) is mountable in an arm rest (28) of the door (22) near a driver of the vehicle....
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5530613 |
Current limiting circuit controller
A circuit controller for selectively connecting a power source to a load includes a non-overcurrent protective electrical switching mechanism and a conductive polymer current limiter connected in...
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5473495 |
Combination load controller
A combination load controller for controlling application of power to a load such as a motor, has an input terminal coupleable to a power source, and an output terminal coupleable to a load. A...
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5436784 |
Motor protection relay using thermal models
The motor relay includes thermal models representing the start and run conditions of a motor. The thermal models are implemented using measured current values and certain known operating parameters...
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5428493 |
Motor starting relay device having PTC thermistors
In a relay device, a first PTC thermistor has one end connected to a first external connecting terminal, and the other end connected to one end of a second PTC thermistor, the other end of which is...
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5323287 |
Protective device for electric motors
A protective device for electric motors for protecting electric motors from high operational temperatures, has an element for determining an operational temperature of an electric motor and an...
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5291085 |
Split-phase starter for an electric motor
A split-phase starter for an electric motor having a casing made up of a casing body and a lid secured to the casing body, the casing body having a first casing and a second casing, a relay contact...
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5264766 |
Wiper motor high current protection PTC
In a vehicle window wiper system having an electric drive motor with high, low and common brushes, electric motor energizing apparatus and forward and reverse motor operation, an auto-resetting...
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5153805 |
Temperature-compensated thermal protector
A protective PTC device is heated by a heater PTC device or by a resistor to an elevated temperature greater than ambient but less than its switching temperature. The elevated temperature of the...
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5123081 |
Temperature control system for motors and power components of a material handling vehicle
The present invention features a system and method for preventing overheating of a motor and/or power amplifier of a material handling vehicle by controlling the performance of the vehicle as a...
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5015937 |
Parametric current control for microstepping unipolar motor
A unipolar motor control system includes motor current regulation derived from monitoring battery voltage and motor temperature. The monitored battery voltage and motor temperature are inputs to a...
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4973146 |
Electrically driving system for foldable rearview mirrors of motor vehicle
An electrically driving system for the rearview mirrors, wherein the incorporated motors are rotated normally or reversibly in response to the operation of a operational switch, thereby erecting or...
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4914329 |
Ventilation air flow block in an electric motor
An electric motor includes a fan attached to the end of a rotor shaft extending through an opening in an end shield of the motor housing. The fan forces air about the housing to cool the motor...
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4862306 |
Combination motor protector and starter apparatus
A motor protector and starter particularly suited for refrigeration compressor motors are mounted in the recess of a first housing portion with their resilient female sockets disposed in alignment...
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4806832 |
Fan with temperature controlled rotation speed
The invention employs a stabilization circuit including a longitudinal branch with a series connection of a Zener diode and a resistor and in the other longitudinal branch with the series...
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4792877 |
Electric motor armature current control circuit
An electric motor armature current control circuit includes an electric motor with an armature in series with a protective device comprising a pair of polymer PTC elements connected in electrical...
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4721894 |
Temperature monitor system for an intermittent duty wound field motor
A thermistor circuit for sensing the temperature of an intermittent duty wound field motor is connected between the field and armature windings of the motor. When the field and armature winding...
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4716486 |
Electric motor comprising a thermistor-type overcurrent protection device
A device providing protection against over-currents in the windings of an electric motor having a rotor (3) and at least two windings (1, 2) comprises at least two parallel thermistors (17, 18)...
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4701824 |
Protected refrigerator compressor motor systems and motor protectors therefor
A motor protector having a thermostat metal element thermally coupled to an electrical motor in a refrigerator compressor motor system has a heater responsive to motor current thermally coupled to...
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4646195 |
Motor protector particularly suited for use with compressor motors
A motor protector of the type having a snap acting thermostatic element is shown particularly adapted for use with compressor motors in which a conventional three pin header is mounted on the...
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4574229 |
Power efficient motor starter and circuit breaker for an induction motor
A motor starter and protection circuit is disclosed wherein a bimetallic contact support supports moveable contacts which are electrically interconnected with stationary contacts during normal...
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