Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7368889 | Motor control apparatus and control method thereof A motor control apparatus supplying AC power to a motor having a plurality of motor windings having an inverting part including a bridge circuit having a plurality of switching units, and supplying the AC power to the motor; brake relays short circuiting the motor w... | 05/06/2008 |
| 7362065 | Regenerative breaking system for electric vehicle Several embodiments of electric vehicle control and control apparatus wherein the amount of regenerative braking of the vehicle and the type of braking is determined by current conditions to provide simpler and more effective control regardless of condition of the p... | 04/22/2008 |
| 7315144 | AC drive apparatus, vehicle control apparatus, and power conversion method and vehicle control method A motor is driven with variable frequency AC power converted from DC power, and an AC output power from the motor is converted to DC. In the conversion, an electromotive force regenerated by the motor is consumed by a plurality of resistors. When the consumption of ... | 01/01/2008 |
| 7291996 | Optical disc drive and brake control method thereof An optical disc drive 1 includes a spindle motor 11 for rotating the optical disc 2 and a spindle driver for driving the spindle motor 11 equipped with a rotation number counter 232 for measuring the rotation number of the spindle ... | 11/06/2007 |
| 7262571 | Resistive braking module with thermal protection A braking module includes a braking load, an input terminal, an output terminal, and control logic. The input terminal is adapted to receive a motor drive signal. The control logic is adapted to receive a motor enable signal, couple the output terminal to the input ... | 08/28/2007 |
| 7224561 | Protective circuit and method for operating said protective circuit, in particular for overvoltage protection for an electronic control system for a motor vehicle Protective circuit and a method for operating said protective circuit in particular for overvoltage protection for an electronic control system for a motor vehicle protective circuit, comprising a control unit (1) and a switch unit, with the switch unit monit... | 05/29/2007 |
| 7224137 | Instantaneous fan stopping method and structure thereof The present invention provides an instantaneous fan stopping method and structure thereof. The method and structure can eliminate the inertial rotating state of the fan when the power supplied to the fan is cut off. In accordance with the present invention, a closed... | 05/29/2007 |
| 7221115 | Method and apparatus for controlling multiplexed motors A control for stopping the rotation of the output shafts of a plurality of multiplexed motors configured in columns and rows with the first connector of each motor in a given column connected in parallel and with the second connector of each motor of a given row of ... | 05/22/2007 |
| 7176648 | Energy management apparatus and method for injection molding systems An energy management control apparatus for a molding machine that includes a first electrically-driven prime mover configured to drive at least a first molding machine device, and a second electrically-driven prime mover configured to drive at least a second molding... | 02/13/2007 |
| 7170246 | Motor control apparatus A motor control apparatus supplying braking power to brake a motor comprises a braking power providing unit to receive input power having an input power voltage lower than a braking power voltage and to boost the input power voltage up to the braking power voltage t... | 01/30/2007 |
| 7129658 | Electro-mechanical actuator braking apparatus and method using motor commutation sensor output to derive piston displacement A braking system is disclosed that includes a brake (22), a ram (20) shiftable in a linear direction relative to the brake (22) for actuating the brake (22), and a stop (24) for limiting movement of the ram (20). The system ... | 10/31/2006 |
| 7126299 | Enhanced system and method for controlling discharge of electric energy from machines Certain exemplary embodiments can comprise a method comprising: receiving electrical energy from a braking system of a vehicle at a working coil, the vehicle comprising a first wheel drive comprising a first electric motor; and via the working coil, transferring the... | 10/24/2006 |
| 7106023 | Motor driving apparatus The present invention is directed to the provision of a servomotor driving apparatus that feeds energy stored in a power storage part connected with a DC link that connects a rectifier circuit with an inverter circuit so that the energy stored in the power storage p... | 09/12/2006 |
| 7106016 | Inductive heating system and method for controlling discharge of electric energy from machines Certain exemplary embodiments can comprise a method comprising: receiving electrical energy from a braking system of a vehicle at a working coil, the vehicle comprising a first wheel drive comprising a first electric motor; and via the working coil, transferring the... | 09/12/2006 |
| 7081735 | System and method for bypassing a motor drive A motor control system comprising a plurality of motor controllers and a power source adapted to drive an electric motor. The motor control system comprises a switch that is selectively operable between at least a first position and a second position. In the first p... | 07/25/2006 |
| 7069123 | Adaptive algorithm for locating network devices in an ECP brake-equipped train A method of locating nodes in train having at least one node per car and includes enabling each node; querying each enabled node to respond during a response interval; disabling each node which responded; and re-querying the enabled nodes until no further responses ... | 06/27/2006 |
| 7053570 | Control circuit for a dual directional direct current motor employing a single alternating current power source A control circuit operates a dual directional DC motor from an AC power source. A controller has first and second position indication inputs adapted to receive respective first and second position indications. The controller also has first and second direction outpu... | 05/30/2006 |
| 7042178 | Motor driving apparatus A motor driving apparatus including a regeneration control function and a power storage device for accumulating a regenerative current and for supplying an inverter section with electric power during acceleration. The inverter section is connected to a converter sec... | 05/09/2006 |
| 7038411 | Motor stop control device utilizable for reel-type gaming machine In the motor stop control device utilizable for the reel-type gaming machine 1, there are provided the stepping motor 70 having two pairs of excitation phases for rotating the reel 3 on the outer periphery of which a plurality of symbols are for... | 05/02/2006 |
| 7034482 | Regeneration control for hybrid vehicle Disclosed is a control apparatus for a hybrid vehicle having an engine, a drive motor (3) that regenerates power, and an electric power storage device (6) that gives/receives power to/from the drive motor (3). The control apparatus includes powe... | 04/25/2006 |
| 7012392 | Multi-stage dynamic braking resistor network A multi-stage dynamic braking resistor network (23) is provided that includes a plurality of dynamic brake resistors (1a–d) for dissipating, as heat, regenerative energy inputted onto a system bus (17) by a motor or actuator (19)... | 03/14/2006 |
| 6906493 | Electronic brake for motor In an electronic system, motor braking is accomplished by applying direct current (DC) voltage, developed across a capacitive element during a run mode operation, across terminals of an alternating current (AC) or an induction motor. While the motor is ON, i.e. duri... | 06/14/2005 |
| 6900606 | Device for inrush current prevention and dynamic braking in a motor A device for inrush current prevention and dynamic braking in a motor having a plurality of power inputting terminals, comprises a diode rectifying unit rectifying power supplied from an AC power supplying unit; a capacitor smoothing the power rectified by the diode... | 05/31/2005 |
| 6879123 | Device to control a 3-phase motor A device to control a 3-phase motor having an inverter connected to each phase terminal and a brake to arrest the 3-phase motor, includes a power supply to supply power to the brake and the inverter at the same time based on a predetermined synchronization signal. T... | 04/12/2005 |
| 6864651 | Bi-directional motor control circuit A motor control circuit includes a forward rotation control circuit, a reverse rotation control circuit, and a brake control circuit. The forward rotation control circuit allows a first current source to supply a first current signal to a motor drive circuit for ope... | 03/08/2005 |
| 6577483 | Dynamic braking method and apparatus An apparatus for decreasing speed of an inverter driven inertial load within a time period for use with a dynamic brake across a DC link including a controller for controlling the inverter to regulate the power returned to the brake such that, when a brak... | 06/10/2003 |
| 6571163 | Electrically controlled, decentralized control system in a vehicle An electrically controlled, decentralized control system in a vehicle includes at least two energy sources which are independent of one another and at least two control units. In addition, at least one high-current load is allocated to each control unit. ... | 05/27/2003 |
| 6564110 | Position controlling apparatus capable of reducing the effect of disturbance A discrete Kalman filter 12 and a disturbance estimating unit 13 are added to a feedback loop for feeding back a detected value of position from a position detector 6. The Kalman filter estimates position and velocity of an object to be controlled, therea... | 05/13/2003 |
| 6498448 | Motor break releasing device A motor brake releasing device includes an electromagnetic brake for locking a motor shaft and a switch mounted between the electromagnetic brake and a releasing-power-supply for the brake. The switch can be operated by an AND signal produced by a motor d... | 12/24/2002 |
| 6441573 | Blended electrical/friction braking system with electric brake feedback monitor and method of use thereof A blended electrical/friction braking system includes an electric brake feedback monitor which monitors a first signal corresponding to an electric brake effort request of an electric motor of an electrically powered vehicle. The electric brake feedback m... | 08/27/2002 |
| 6424798 | Device for controlling sensorless brushless-DC-motor A sensorless brushless-DC-motor mounted on an electric or hybrid vehicle is powered by an on-board battery through an inverter supplying a three-phase pulse width modulated voltage (PWM voltage). The inverter is controlled to generate the PWM voltage havi... | 07/23/2002 |
| 6373210 | Electric motor and method for operating such a motor Conventionally converter-controlled electric motors are allowed to operate in generational mode during braking and to convert the electrical energy so produced into heat. Such motors may also comprise electromagnetically actuated mechanical brakes. In the... | 04/16/2002 |
| 6333611 | Motor drive apparatus for an injection molding machine A motor drive apparatus is provided in an injection molding machine in order to supply electrical energy to a motor. The motor drive apparatus includes an electricity accumulation unit for accumulating electrical energy; and an electricity accumulation ci... | 12/25/2001 |
| 6291952 | Method and circuit arrangement for operating an electromagnetically actuated mechanical brake of an electric motor Electric motors, in particular geared motors, are often equipped with electromagnetically actuated mechanical brakes. In order to ensure that an excitation coil (3) can be operated with alternating-current mains supplies of various voltages, it is propose... | 09/18/2001 |
| 6094023 | Method and device for braking an all-mains motor A method and a device for electrical braking of an all-mains motor by which disconnection of supplied feed current to the motor causes an electric switching operation, whereby electric current arranged to cause a reversed rotary direction for the rotor (1... | 07/25/2000 |
| 6087800 | Integrated soft starter for electric motor A solid state motor starter, commonly referred to as a soft starter, is constructed in a manner to be easily manufacturable while at the same time combining all the required components in a relatively small package. A solid state power switch is clamped b... | 07/11/2000 |
| 6081081 | Electric motor-driven wheel brake for vehicles The wheel brakes of each vehicle axle or side or diagonal are supplied with current by a separate voltage source. To reduce the load on the vehicle's electrical system, the wheel brakes of a front axle are supplied with current first, and then the wheel b... | 06/27/2000 |
| 5982119 | Motor drive apparatus including braking means A motor drive apparatus used in a motor for controlling a rotor therein to rotate in regular and reverse directions includes a rotating direction detecting circuit for detecting a first direction in which rotor is rotating. A comparator compares a command... | 11/09/1999 |
| 5973420 | Electrical system having a clear conductive composition An electrical system, or a trigger circuit for use in connection with an electrical system, is disclosed. The electrical system includes a circuit element responsive to applied current, a power source for providing current to the circuit element, a substr... | 10/26/1999 |
| 5962997 | Electric motor-driven wheel brake for vehicles The wheel brakes of each vehicle axle or side or diagonal are supplied with current by a separate voltage source. To reduce the load on the vehicle's electrical system, the wheel brakes of a front axle are supplied with current first, and then the wheel b... | 10/05/1999 |
