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| Number | Title | Issue Date |
| 8185857 | Signal conversion facility and method for creating programming for a signal conversion facility A signal converter device has a programmable logic circuit, wherein a number of binary input signals are being transmitted from the outside of the signal converter unit. The programmable logic circuit is programmed by a programming in such a way, as to detect binary... | 05/22/2012 |
| 7705548 | Enhancement of the efficiency of energy recovery during spindle motor step-up phases for parking the R/W head of a disk storage device upon external supply failure Energy recovery during recirculation phases of the phase windings of a multiphase spindle motor is increased when all the MOSFETs of the output bridge stage associated therewith are turned off (tristated) for charging a hold capacitor. This is accomplished by allowi... | 04/27/2010 |
| 7583036 | Electrically driven vehicle In an electrically driven vehicle having a controller, the vehicle has a steering angle sensor for outputting a detected value of a steering angle of the vehicle, the controller includes a first torque order pattern along which a torque order for a first electric mo... | 09/01/2009 |
| 7312595 | Motor control apparatus Presence/absence of a failure in a feedback control system of a motor is monitored. When a failure is detected in the feedback control system, the motor is driven by switching to an open-loop control. During the open-loop control, the motor is rotated by sequentiall... | 12/25/2007 |
| 7205730 | Article transport vehicle The invention provides an article transport vehicle that includes: a vehicle body; a first wheel that supports the vehicle body; a second wheel that is disposed spaced apart from the first wheel in a fore-and-aft direction, and that supports the vehicle body; a firs... | 04/17/2007 |
| 7186155 | Power steering rate controller for a boat and method The invention provides a device and method for producing substantially kinematic steering of a boat whose yaw rate and direction is approximately proportional to the rate and direction that a steering device such as a steering wheel is being operated. The invention ... | 03/06/2007 |
| 7150339 | Electrically powered bicycle An electrically powered bicycle is disclosed including a rear fork assembly having a pair of structures extending from a frame, a wheel attached between the structures of the rear fork assembly, an electric motor mounted adjacent to the wheel, and a drive mechanism ... | 12/19/2006 |
| 7026780 | Method for stabilizing the movement of an articulated chain of a chain block, especially to prevent the formation of a resonance oscillation of the chain, and a chain block apparatus The invention concerns a method for stabilizing the motion of an articulated chain of a chain block, especially to prevent the formation of resonance oscillation of the chain, in which an articulated chain is led across a polygonal chain wheel with non-uniform pitch... | 04/11/2006 |
| 7007618 | Motor system for sewing machine A motor system for a sewing machine includes a motor unit rotatable at a first rotation speed; a clutch unit with an output shaft capable of being coupled to or separated from the motor unit; a speed changing unit for switching the first rotation speed to a second r... | 03/07/2006 |
| 6815914 | Control method for light deflection device The invention concerns a light deflection device, and a control method for the light deflection device, which are rich in expandability of drive control. The light deflection device includes a polygon mirror to reflect the light beam; a rotor, having a magnet, to ro... | 11/09/2004 |
| 6759818 | Electromotive actuator and method for controlling the same To realize structure simplification and reduction in manufacturing cost without lowering power transmission efficiency and reliability. The present invention includes a first motor 5 and a second motor 6, and a lead 2 of a ball screw 12 i... | 07/06/2004 |
| 6680589 | Relay contact monitoring device A device for monitoring the state of relay contacts is especially useful for controlling motor windings in air conditioning systems. When a first relay switch, which is operative to supply power to a first motor winding does not open as desired, a switch ... | 01/20/2004 |
| 6583590 | String drawing device for a racquet A string drawing electrical device for a racquet has a casing, a string holder, an actuating device and a control unit. The string holder is rotatably attached to a panel of the casing. The actuating device is mounted in the casing and provides two functi... | 06/24/2003 |
| 6153988 | Arrangement for operating an electromagnetic brake of a vehicle An arrangement for operating a brake of a vehicle has a controllable operating electric motor and a conversion device for converting the rotational movement of the operating electric motor into a translational movement of one or several brake element(s) w... | 11/28/2000 |
| 5895140 | Control system for communications between driving units and control units An image forming apparatus including a status detecting unit for detecting a status of each portion of the apparatus, a driving unit for driving each portion of the apparatus, an input unit having an input data storing unit for storing input data detected... | 04/20/1999 |
| 5747950 | Steering system for vehicles or ships A steering system for vehicles or ships is provided, with a steering handwheel and a steering element with no mechanical linkage line therebetween, with a steering handwheel sensor device, a steering element sensor device and a control arrangement which, ... | 05/05/1998 |
| 5491390 | Electric propulsion system for a bicycle An electric propulsion system for a bicycle includes one or two electric motors secured to a mounting assembly attached to the bicycle, a drive roller that impinges on the front wheel of the bike, a battery pack secured to the frame of the bicycle, and a ... | 02/13/1996 |
| 5481165 | Drive device for a sewing machine A drive device for a sewing machine comprises a high speed main motor having a power transmitting flywheel, and a low speed auxiliary motor having a power transmitting pulley. The power transmitting flywheel and the power transmitting pulley being mounted... | 01/02/1996 |
| 5357177 | Electrical adjustment device An electrical adjustment device, in particular an electrical chain transfer device for bicycles is disclosed, comprising an adjusting element, a drive device for the adjusting element, a control unit for controlling the drive device and a presetting devic... | 10/18/1994 |
| 4965498 | Electrically operated system for drawing curtains and other types of barriers An electrically operated drawing system for drawing and undrawing curtains includes an electric motor, a clutch having a solenoid, a rotation detector for detecting rotation of the electric motor, an operating switch for outputting command signals, and a ... | 10/23/1990 |
| 4847543 | Motion control drive interface A man to machine interface for the control of video or motion picture camera movement for use with a camera aiming system which can reproduce a specific camera movement any number of times. The interface moves the camera in the pan or tilt axis giving an ... | 07/11/1989 |
| 4712052 | Digital servo-control system A digital servo-control system used for driving a machine with a plurality of drive shafts having a digital type multi-axis position control unit, provided in common to all of the drive shafts, for computing a torque command value for each drive shaft on ... | 12/08/1987 |
| 4698565 | Hoist with overload safety protection The hoist, lifting apparatus or the like of our invention comprises at least one hoist motor, a protective controller for the hoist motor, and an overload safety device operating on the protective controller, wherein the overload safety device has a cable... | 10/06/1987 |
| 4689527 | Double driving device for machines This invention provides a double driving device which includes two motors, sharing a same common shaft or having their shafts linked together, and a control circuit. The two motors have different horse power and are used in machines, such as presses or sh... | 08/25/1987 |
| 4651066 | Ferrite permanent magnet electrical machine and the application thereof within vehicle traction drives A drivetrain (48) for an electric passenger vehicle (10) includes a battery (40) for energizing a single-phase A.C. traction motor (18) which drives a ground engaging wheel (12) through a multi-speed transaxle (20). The motor is characterized by an extern... | 03/17/1987 |
| 4612485 | Overhead doors operating apparatus Overhead doors operating apparatus uses a single motor power unit to operate a selected one of a plurality of overhead doors through a selectively energized coupling, such as an electromagnetic clutch, or if desired, all of the doors in unison by energizi... | 09/16/1986 |
| 4491767 | Synchronizing synchronous motors, motors prior to clutch closure In the inching of a grinding mill or similar apparatus which is driven by a pair of synchronous motors through fluid actuated clutches, the motors must be angularly alined one with the other in order that the load be shared equally between the motors. The... | 01/01/1985 |
| 4405883 | Apparatus for stopping rotation of tape reels An apparatus for rapidly and positively stopping the rotations of first and second tape reels which are driven independently, without introducing slack or damages to a recording medium of a tape form wound by the first and second tape reels. The control s... | 09/20/1983 |
| 4362975 | Device for controlling a bidirectional DC motor This device for controlling the operation of a bidirectional DC motor comprises a pair of double-throw control reversing switches and a pair of ON-OFF switches, a solenoid-operated brake associated with the motor shaft, and two pairs of unidirectional ele... | 12/07/1982 |
| 4271379 | Web fed printing press motor control A web fed press has at least one press unit including a first web driving means driven by a first motor. Downstream from the press unit is a second web driving means, such as nip rolls, driven by a second motor. Encoders are associated with the motors to ... | 06/02/1981 |
| 4222512 | Device for controlling rotary motion A rotary drive device for effecting, for example, displacement of a printing roller towards or away from a pressure roller in a printing press, is formed by a direct current or alternating current high speed motor coupled mechanically to a permanent magne... | 09/16/1980 |
