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A hand wearable body squeegee comprising a glove portion, a concave squeegee band, and a linear squeegee band.
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| Number | Title | Issue Date |
| 7378810 | Method and apparatus for spindle motor control Information indicative of the placement of spindle motor components may be obtained and used to provide a correction to one or more BEMF-derived attributes used to control the spindle speed. In some implementations, first and second signals indicative of BEMF of dif... | 05/27/2008 |
| 7372224 | System and method for determining barrier motor parameters without using sensors A barrier operator comprises a first measuring apparatus for measuring a current used by a direct current (dc) motor to move a barrier and a second measuring apparatus for measuring a generated voltage of the dc motor. A controller is coupled to the first measuring ... | 05/13/2008 |
| 7308961 | Vehicle cruise control device and method A maximum permissible acceleration is calculated so as to take into account vehicle stability, driver's comfort, road surface information and traffic information, driver's specific taste in acceleration and deceleration, and the like. An acceleration limiting proces... | 12/18/2007 |
| 7253585 | Battery pack A method for conducting an operation including a power tool battery pack. The battery pack can include a housing, a first cell supported by the housing and having a voltage, and a second cell supported by the housing and having a voltage. The battery pack also can b... | 08/07/2007 |
| 7166980 | Methods and apparatus for monitoring a brushed permanent magnet motor using back-emf measurements Techniques sense a back-emf voltage from a brushed permanent magnet motor. Such techniques can be used for a variety of purposes, such as to estimate the current that is being applied to the motor, to estimate the motor's velocity, position, torque, and the like. On... | 01/23/2007 |
| 7084590 | Booster and motor controller A voltage sensor (101) is connected to output terminals (P, N) of a booster. The voltage sensor (101) detects a boosted voltage, and outputs the detected voltage to a first drive controller (102). The first drive controller (102) outputs ... | 08/01/2006 |
| 7068923 | Speed control apparatus of motor A speed control apparatus includes a speed control part 12 for generating a source current command based on a difference between a speed command of a motor 4 and speed detection in which a speed of the motor 4 for driving a load 2 is dete... | 06/27/2006 |
| 7062159 | Device for correcting a digital estimate of an electric signal A device for correcting a digital estimate of an electric signal is described. The device includes a comparator that generates a current proportional to the difference between an analog estimate signal, which derives from the digital estimate, and the electric signa... | 06/13/2006 |
| 7034542 | Current sensing circuit and method The present invention includes a plurality of FETs (211, 212, 213, 214, 215, 216, 217) including an operational amplifier with additional FETs (218, 219, 220,221) arranged as current mirrors, and a sense FET (101), and a current sensed at FET ( | 04/25/2006 |
| 7021072 | Current control loop for actuator and method Systems and methods for providing a current control loop for an actuator. A typical system includes a current command controller setting a command current, the current command controller being coupled to a drive circuit used to drive the actuator and a sampling modu... | 04/04/2006 |
| 6981402 | Speed and fluid flow controller A system and method for measuring fluid flow rate in a system where fluid is pumped, such as a gas monitoring instrument where gas is pumped from a space such as a room or enclosure through a conduit to a sensor. The flow of gas through a pump is determined by measu... | 01/03/2006 |
| 6977477 | Systems, apparatus, and methods for motor control Systems and methods are provided through which the current to a spindle motor of the recording medium of a mass storage device is modulated to avoid anomalies in the operation of mass storage device and reduce power consumption. In the example of a disc drive, the c... | 12/20/2005 |
| 6424107 | Apparatus and method for controlling an electric motor An apparatus (10) for controlling an electric motor (36) having a plurality of motor phases includes a motor controller (32) that controls energization of each phase of the plurality of motor phases. A compensation circuit (56, 84, 104) is associated with... | 07/23/2002 |
| 5598081 | Vector control method for controlling a rotor speed of an induction motor A vector control method is provided for controlling a rotor speed of an induction motor by an inverter which provides an AC current of varying frequency to the induction motor, and a vector controller which provides control voltage Vu, Vv, Vw, in response... | 01/28/1997 |
| 5539290 | Automatic venting system for a vehicle with obstruction detection utilizing dynamically modified thresholds A motor control system for controlling operation of an electric motor associated with a motor-operated vent in a vehicle. The system monitors and stores data relating to the operating current and detects occurrences of abnormal loads applied to the vent b... | 07/23/1996 |
| 5450520 | Load current sampling technique A circuit for sensing the current delivered to a load, or multiple loads, such presented by a polyphase DC motor, without significantly dissipating the energy delivered to the load, has a predriver circuit and a power delivery circuit for each load. The p... | 09/12/1995 |
| 4999556 | Pulse width modulator motor control A pulse width modulation control circuit includes a pulse width modulator which supplies a signal to a power switch tying together a DC signal generator and a motor and various sensing circuit including a control voltage disabler circuit. All of the sensi... | 03/12/1991 |
| 4893067 | Direct current motor speed control The motor speed control circuit senses average back EMF as a measure of motor speed. The back EMF charges a capacitor circuit which accumulates charge and develops a voltage indicative of the motor speed. A sample and hold circuit may be used to sample th... | 01/09/1990 |
| 4794310 | Phase angle control circuit for motors A control circuit for d-c motors, which are supplied by an a-c supply through phase angle control, and which obtains information regarding the actual current value from a current transformer secondary voltage, and which is utilized additionally also for d... | 12/27/1988 |
| 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 series with the motor armature windings and in electrical p... | 12/20/1988 |
| 4675584 | Control system A control system capable of improving a disturbance response characteristic, includes a control processing unit and a power converter. The control processing unit includes apparatus for (a) providing a signal A equal to a predetermined transfer function G... | 06/23/1987 |
| 4673852 | Device for the electric low-voltage driving of a rotatable mass having high inertia and a motor which is part of said device An electric device for driving a rotatable mass having a high inertia, said device comprising an electric motor supplied with power by a low-voltage dc source through an electronic energy converter supplying power to the armature (11) of the motor; the fi... | 06/16/1987 |
| 4669025 | Semiconductor junction temperature emulator The present device includes a resistor network wherein the values of the resistors are chosen such that the heat generated by current passing through the resistors will be substantially equal to heat generated at a semiconductor junction which is to be co... | 05/26/1987 |
| 4639652 | Control system for robot manipulator A control system for an multi-articulation robot manipulator in which an electric current used to drive the robot manipulator is detected and compared with a predetermined level band near the saturated current level of the electric current, and a feedback... | 01/27/1987 |
| 4622779 | Method and apparatus for speed control of a grinder A signal representative of the mass moment of inertia of a grinding wheel and its drive motor is integrated for a fixed time interval during start-up of the motor beginning when the motor speed or the motor current has reached a predetermined small value,... | 11/18/1986 |
| 4605885 | Method of controlling rotation speed of motor A method of controlling the rotation speed of a motor to maintain it at a desired value, comprising a step of obtaining a deviation between the detected rotation speed and the desired value, and a step of changing the gain of a feedback loop, which serves... | 08/12/1986 |
| 4574226 | Method and apparatus for controlling an electric motor the rotational speed of which is automatically reduced in no-load idling operation A method and apparatus for controlling an electric motor, in particular a motor for driving hand tools, saws, and the like, the rotational speed of which is automatically reduced in no-load idling operation and increased when working under load to pre-det... | 03/04/1986 |
| 4514668 | D.C. Motor driving circuit A D.C. motor driving circuit comprises a first transistor circuit comprising an initial stage transistor and a terminal stage transistor respectively connected in Darlington pairs, for supplying a current to a D.C. motor, coupled between the D.C. motor an... | 04/30/1985 |
| 4513231 | Control circuit of pulse width modulation inverter The invention relates to a control circuit of a pulse width modulation inverter, wherein a current control circuit to output a current control signal corresponding to a current command signal is provided, main transistors of a main circuit of the pulse wi... | 04/23/1985 |
| 4511829 | Direct current control in inductive loads A DC current control is provided for inductive loads which achieves high energy efficiency even though the supply voltage may be subject to considerable variations. The inductive load may be a DC motor, a solenoid, or similar device. The electric power is... | 04/16/1985 |
| 4503370 | Electronic clutch for electric tools of selectable speed An electronic clutch for a multispeed electric tool includes a voltage sensor having a D.C. voltage output proportional to the current absorbed by the tool's motor and dependent on the motor operating temperature. A comparator compares this D.C. voltage w... | 03/05/1985 |
| 4494057 | Speed control system for small medical motors A speed control system for small medical motors. The system comprises a drive voltage regulation circuit, a current detection circuit which generates a detection signal in accordance with motor current, a voltage detection circuit which generates a detect... | 01/15/1985 |
| 4490657 | Automatic torque taper circuit A dc motor drive includes a current limit circuit which produces a current limit signal that inhibits motor current to its commutation limit over a wide speed range. The current limit circuit includes an analog divider circuit which produces an output sig... | 12/25/1984 |
| 4489258 | Propulsion system for vehicles with a d-c machine A propulsion system for vehicles, includes a d-c machine, an armature current control element connected to the d-c machine, an alternating member having an output side connected to the armature control element and having an input side, an armature current... | 12/18/1984 |
| 4477752 | Speed control apparatus for DC motor A speed control apparatus for DC motor (1), comprises a bridge circuit formed by the winding of the motor (1), a resistor (2) series thereto, and two resistors (3 and 4). Therein, a reference voltage (Er) is produced by dividing a voltage V | 10/16/1984 |
| 4476417 | Control arrangement for a static converter A control arrangement for a static converter of the type which supplies a DC machine. A pilot signal is produced, the pilot signal being responsive to the actual speed value and the desired current value of the DC machine. The pilot signal is then combine... | 10/09/1984 |
| 4473783 | Motor control circuit A current limiting circuit, for a serial commutator motor, that monitors the flow of current through resistances chosen to model the motor, rather than the noisy flow of current through the motor itself. Current for one of the modeling resistances is deri... | 09/25/1984 |
| 4468724 | Method and apparatus for controlling load current A load DC motor is supplied with a DC current through a converter principally consisting of thyristors controlled by an ON-state control signal. The load current is detected both as to the mean value and the variation in time thereof. The mean value of th... | 08/28/1984 |
| 4458186 | Transistor control device for power transistor chopper A transistor control device in a power transistor chopper is arranged to charge a capacitor for feeding a base current to the chopper transistor with electrical energy stored in an impedance of a wiring connecting a DC power source to a load to which the ... | 07/03/1984 |
| 4454455 | Fault responsive means for changing control sequence of a multiple-bridge electric power converter In the propulsion system of an electric locomotive, a-c wayside power is converted to direct current for the traction motors by means of several phase-controlled rectifying bridges having serially connected outputs. The bridges are controlled sequentially... | 06/12/1984 |
