Class 318/275 - With automatic starting and/or stopping

Subclass of Class 318 - Electricity: motive power systems
Definition: Subject matter in which means are provided for also automatically
No. of patents: 30
Last issue date: 11/04/2008

Number	Title	Issue Date
7446492	Fan system and stopping method for motor thereof A fan system and a stopping method for the fan system are provided. The fan system is electrically connected to a power supply and receives the power therefrom. The fan system includes an energy storage apparatus, a motor and a start-up device. The energy storage ap...	11/04/2008
7372226	Method for switching off a power tool In a method for shutting off a drive motor (12) of a power tool that drives a tool, the drive motor (12) is shut off as a function of a variable threshold value (E1) if the tool jams. The threshold value (E1) is determined in at l...	05/13/2008
7301295	Stabilizer control device A stabilizer control device includes a stabilizer having torsion bars and a brushless motor having an exciting coil, a rotating direction switching device switching a rotating direction of the brushless motor, an excitation control device for controlling power suppl...	11/27/2007
7275631	Engaging/disengaging fail-safe door closing device for rolling fire door and door machine having same There is disclosed an engaging/disengaging fail-safe door closing device for a rolling fire door, provided between a power device and a speed reducing device of a door machine, including an electromagnet fixed inside a housing of the door machine and disposed around...	10/02/2007
7270591	Electric sander and motor control therefor A hand held orbital sander has a housing having an electronically commutated motor disposed therein and an orbit mechanism disposed beneath the housing. A motor controller is coupled to the motor. The motor controller changes the speed of at which it runs the motor ...	09/18/2007
7268508	Direct current motor control circuit and wiper system using said circuit The invention relates to a direct current motor control circuit. The invention also relates to the use thereof in a windscreen wiper system for vehicles. An MOS FET transistor with an anti-parallel diode (M3) is serially mounted on the braking system (M2	09/11/2007
7190137	Method to control an electronically commutated motor and motor controller The invention relates to a method to control an electronically commutated motor in which the motor current is influenced as a function of an operating parameter of the motor. According to the invention, the motor current is adaptively switched as a function of the o...	03/13/2007
7126294	Method and device for controlling photovoltaic inverter, and feed water device A photovoltaic inverter control method includes steps of monitoring a variation in output voltage of a solar battery by a power and voltage monitoring circuit (51) and, when the variation occurs, accelerating or decelerating an electric motor (3) to ma...	10/24/2006
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
7000352	Backdoor system of vehicle having pressure sensor for detecting object pinched by backdoor A pinched object detection apparatus includes a couple of pressure sensors arranged at lateral end portions of a backdoor of a vehicle and another couple of pressure sensors arranged at lateral end portions of a rear opening of the vehicle. An object pinched between...	02/21/2006
6979976	Driving apparatus for driving a brushless motor A driving system for driving a brushless motor effects a rotation control of a rotor by sequentially switching application of a current to magnetic coils disposed in a stator in response to a detection signal from a pole-position detector. The driving system compris...	12/27/2005
6943510	Excitation circuit and control method for flux switching motor An excitation circuit for a flux switching motor. The circuit includes a low-value film capacitor across the DC side of a bridge rectifier. A plurality of electronic switches are arranged in an H-bridge configuration for switching current flow through an armature wi...	09/13/2005
6822408	Method of securing a machine element and/or a load connected to the machine element in a fixed position In a method of holding a machine element, whose position is directly or indirectly controlled by an electromotive drive in the absence of a self-locking mechanism, the drive is halted and a brake is activated to maintain the machine element in a holding position, wi...	11/23/2004
6563287	Method of controlling three phase motor starting sequence A motor starter. The motor starter comprises a motor; start, run, shorting and transition contactors operably associated with the motor; and run, start, shorting and transition auxiliary contactors. The transition auxiliary contactor operably controls the...	05/13/2003
6337553	Circuit arrangement and method for operating and electrical motor A circuit arrangement with a digital controller for operating an electric motor and a method for starting an electric motor are disclosed. Electric motors require a considerably higher current immediately after they have been switched on and during the ru...	01/08/2002
6182723	Switchable router brake system Improvements made to a router a relate to a switchable router brake system. The switchable brake system permits a motor brake to be selectably engaged to operate when the router motor is turned off. When engaged, the motor brake, which comprises a brake r...	02/06/2001
6114820	Power window apparatus having safety unit A power window apparatus is provided for detecting pinching in accordance with the opened/closed position of the window and a state of rotation of a motor, the apparatus having a position sensor which detects a safety-control suspension region of the wind...	09/05/2000
6047534	Stopping and restarting device in independent driven spindle in spinning machine Regarding an independently driven type spindle in a spinning machine, when a yarn breakage is occurred in a spindle 10, a brake operating member 35 of the spindle 10 is moved toward a spindle shaft 13. During the movement of the brake operating member 35,...	04/11/2000
5198734	Method and means for stopping backspinning motor A method for stopping the backspinning of a submersible pump motor prior to restarting the motor. A control circuit is provided which rectifies A.C. control voltage and applies the resulting D.C. voltage to an induction motor. This sets up a stationary ma...	03/30/1993
5142210	Abnormal state detecting apparatus of a machine tool An abnormal state detecting apparatus of a machine tool having a servomotor. The apparatus is provided with a device for detecting an abnormal acceleration and an abnormal torque of the servomotor and a device for detecting an abnormal operation state of ...	08/25/1992
5091680	Motor brake circuit for magnetic disk drive system A device for braking a rotating magnetic disk in a magnetic storage system senses a back EMF generated by a drive spindle motor. By electrically shorting the coils in the drive spindle motor the rotation of the magnetic disk is stopped. The back EMF is co...	02/25/1992
4922168	Universal door safety system A safety system is disclosed for universal attachment to existing garage door openers. A transmitter of infrared energy transmits a beam laterally of the door opening to detect any obstruction to door closing movement. A safety control circuit is adapted ...	05/01/1990
4749923	Electric sewing machine motor control device A motor control device provided on an electric sewing machine comprising a brushless permanent-magnet motor and in combination with a magnetic pole sensor, rotational-speed and rotational-speed polarity detector for sewing machine, detectors for needle-po...	06/07/1988
4659970	Vehicle docking apparatus and method Automatic guided vehicles are commonly used in industrial material handling operations. Such vehicles must be accurately docked at predetermined stop locations without the guidance or assistance of human operators. The subject apparatus is used in conjunc...	04/21/1987
4587467	System for orienting a rotating member A system for orienting a rotating member includes a slow down and a stop sensor. A logic circuit receives inputs from the sensors to slow and stop the rotating member. A slow down signal must be received before a stop signal can effect the rotations. Star...	05/06/1986
4458185	Propulsion control apparatus for passenger vehicles A cam controller for determining the operation of an electric motor is coupled with a stepping motor to provide predetermined positional movements of the cam controller in response to a desired electric motor operation control signal and in accordance wit...	07/03/1984
4341455	Conducting toner transfer apparatus Novel apparatus for transferring magnetic and conducting toner from a dielectric surface to plain paper by interposing a dielectric belt mechanism between the dielectric surface of an imaging drum and a plain paper substrate such that the toner is first t...	07/27/1982
4267914	Anti-kickback power tool control An impending kickback condition is the operation of a power tool or machine tool system is sensed and used to control or eliminate the kickback. The ability to sense an impending kickback condition can be used in all categories of power driven tools. The ...	05/19/1981
4249117	Anti-kickback power tool control An impending kickback condition in the operation of a power tool or machine tool system is sensed and used to control or eliminate the kickback. The ability to sense an impending kickback condition can be used in all categories of power driven tools. The ...	02/03/1981
4015179	DC motor control circuit A DC motor control Circuit for providing improved starting and stopping control is provided. The control circuit includes a DC constant voltage source, a control transistor, a DC motor and a switching transistor having a first switching control electrode ...	03/29/1977

PatentStorm

Quotables

PatentStorm News

Class 318/275 - With automatic starting and/or stopping