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7583037 Mobile storage unit with holding brake and single status line for load and drive detection  
The present invention is a mobile storage unit including an electric motor operably connected to wheels movably supporting the unit, and a motor brake operably connected to the electric motor. A...
7557525 Dual swing gate control system  
A control system and method for ensuring proper closure of a dual swing gate. The control system employs position sensors for monitoring the position of each gate arm. A “differential position”...
7554277 Circuit device for increasing the useable motor voltage in a long stator drive and method for operating a magnetically levitated vehicle provided with said type of circuit device  
A circuit device is disclosed which is used to increase useable motor voltage in a long stator drive. Further, suitable methods for operating a magnetically levitated vehicle provided with the...
7504794 Planar motor  
A common electrode plate formed on a common electrode base attached to the lower surface of the movable stage faces a split electrode plate formed on a split electrode base attached to the upper...
7429845 System and method for controlling a stage assembly  
A stage assembly ( 220 ) that moves a work piece ( 200 ) a movement step ( 257 ) includes a first stage ( 238 ), a first mover assembly ( 242 ), a second stage ( 240 ), and a second mover assembly...
7304448 Developing apparatus and image processing system with the developing apparatus  
A developing apparatus is capable of moving a stage for supporting a substance to be developed from a detachable position to a developing area below a developing unit, and two-dimensional movement....
7282874 Alignment apparatus, exposure apparatus, and device manufacturing method  
An alignment apparatus which moves a object comprises a first structure having a holding member which holds the object, a second structure having a magnet which constitutes a linear motor, the...
7262575 Method and apparatus for precise positioning of an object with linear stepper motors  
Methods and apparatus for precise positioning of an object using linear actuators based on linear stepper motors operating in microstepping or full step mode, a control algorithm based on...
7245092 Alignment stage apparatus, exposure apparatus, and semiconductor device manufacturing method  
An alignment stage apparatus including a vacuum chamber, a linear motor including a plurality of coils to drive a stage, a coil selector which selectively energizes the plurality of coils, and a...
7233119 Method and circuit arrangement for the sensorless determination of load states of synchronous linear motors  
The invention relates to a method and to a circuit arrangement used to regulate synchronous linear motors, especially linear drive mechanisms in film drawing systems. The force (F clip ) between...
7173387 Arrangement having at least one long-stator linear motor, for operating magnetically levitated vehicles  
The invention relates to an arrangement for operating a magnetically levitated vehicle by means of an arrangement having at least one long-stator linear motor. The linear motors are sub-divided,...
7135827 Sawyer motor forcer with integrated drive electronics  
A digitally controlled, integrated Sawyer motor forcer consists of a rigid mechanical housing containing one or more linear motor segments, integrated control electronics, cooling means, and...
6943508 Tubular linear synchronous motor control for elevator doors  
An apparatus for effecting non-contact linear door displacement comprising a tubular motor formed of a stator ( 1 ) formed from a plurality of magnets ( 21 ) arranged along a linear axis ( 15 ),...
6856106 H-bridge apparatus and method  
An apparatus has a first H-bridge having a first motor contact on a shared first side and a second motor contact on a second side. The apparatus also has a half H-bridge having a third motor...
6779447 Device for registering the position of a rotor part in a transport system  
A device for registering the position of a rotor part in a transport system also having a static part in addition to the rotor part includes a dimensional standard forming part of the rotor part,...
6770890 Stage devices including linear motors that produce reduced beam-perturbing stray magnetic fields, and charged-particle-beam microlithography systems comprising same  
Stage devices are disclosed that achieve high positioning and movement accuracy while producing substantially reduced outwardly extending stray magnetic fields. The stage devices are especially...
6727666 XY table for a semiconductor manufacturing apparatus  
An XY table used in a semiconductor manufacturing apparatus including lower (X table) fixed to an X movable element and an upper table (Y table) fixed to a Y movable element, in which the upper...
6583597 Stage apparatus including non-containing gas bearings and microlithography apparatus comprising same  
Stage apparatus are disclosed for holding an object (e.g., substrate or reticle, for example) in a microlithography system, especially a system for performing microlithography in a vacuum...
6548970 Two-axis motion machine  
An individual section glassware forming machine that includes at least one blow mold for forming articles of glassware, a sweepout station for transferring glassware to a machine conveyor, and a...
6518718 Speed electromotive force phase control system adapted to low speed  
Three-phase/d-q converters convert an output voltage V outputted from a power converter and a coil current flowing through a propulsion coil to a voltage and a current in a dq rotary coordinate...
6411049 Method and apparatus for operating a magnet vehicle  
A method and an apparatus for operating a magnetically levitated magnet vehicle ( 5 ) are described, with a synchronous long stator linear motor, which comprises a plurality of winding sections (...
6310455 Positioning and actuating drive  
An electric motor, gearbox, position phase angle sensor and motor phase angle sensor are integrated in a common housing to reduce the size of a positioning and actuating system. The housing also...
6281644 Combined linear motor  
To prevent adverse effect, on machining accuracy, of cogging thrust of linear motors when used in a combined linear motor driving a machine tool. Three linear motor movers are fixedly attached to a...
6240843 Sheet transport system for a rotary printing press  
A sheet transport system for a rotary printing press, including a sheet transport device having a sheet holder, and a first and a second propulsive drive element for propulsively driving the sheet...
6218792 Circuit arrangement of modular design, in particular for propulsion off a railroad vehicle  
A circuit arrangement (3) of modular design, in particular for propulsion of a railroad vehicle, having at least two series-connected, power-electronic modules (M 1 , M 2 , . . . M n ), which each...
6153955 Implementing comprehensive PID engine with single bit adder  
A digital image printer that performs certain digital image processing functions using parallel integrated circuitry and other functions using serial integrated circuitry in an effort to minimize...
6127790 Method and apparatus for passively trimming sawyer motors to correct for yaw errors  
A system is disclosed for correcting for rotational errors in a linear motor system. A shunt resistor is coupled in parallel with a winding of a phase of a motor of the linear motor system to...
6043571 Linear-motor-driven transport installation  
In a linear-motor-driven transport installation, in particular a linear-motor-driven simultaneous stretching installation, the tenter-clip carriage return section (10) is divided into at least...
6011367 Controller for devices driven by linear motors  
An improved control device for linear-motor-driven equipment, in particular for the drive of tenters of a film stretching plant, has a central control device (1) and a multiplicity of converters...
5760564 Dual guide beam stage mechanism with yaw control  
A dual guide beam stage mechanism for accurate X-Y positioning for use e.g. in semiconductor processing equipment provides accurate planar motion and yaw control. Over-constraint between components...
5744924 Guideless stage with isolated reaction frame  
A guideless stage for aligning a wafer in a microlithography system is disclosed, and a reaction frame is disclosed which isolates both external vibrations as well as vibrations caused by reaction...
5464128 Electrically operated dispensing appliance having two electric motors for advancing and retracting thrust rods  
The electrically operated dispensing appliance comprises two electric motors (1, 26), one of the electric motors (1) acting upon the driving screw (70) through a first gear drive (2) having a...
5453671 Electromotive actuator for a central door locking system of a motor vehicle  
The invention relates to an electromotive actuator with a housing for a central door locking system of a motor vehicle having a first slide adjustable by a first electric motor between two end...
5327060 Positioning device using Lorentz forces  
A positioning device includes a table (5, 69), which is displaceable in two coordinate directions (X, Y) by means of Lorentz forces of electric linear motors over a base (3) and is guided over the...
5280225 Method and apparatus for multi-axis rotational motion  
An apparatus for multi-axis rotational motion includes a spherical structure (102) and a housing (104), the housing (104) at least partially enclosing the spherical structure (102) and movably...
5248923 Manipulator using plane pulse motor  
In order to obtain a manipulator using a plane pulse motor showing advantageous features such that even in a case where a moment of force is applied to the manipulator in a falling direction, the...
5237252 Method of driving plural linear induction motors in a transporting system  
A transporting system includes plural primary dispersedly arranged linear induction motors and plural continuously movable bodies connected by a secondary conductor in an endless path. At least one...
5125347 Power supply system for a linear motor type transportation system  
A power supply system for a linear motor type transportation system includes a series of driving coils disposed along a railroad track for producing a moving magnetic field to drive a train, a...
5115172 Phase locked loop speed control circuit for controlling speeds and relative positions of objects  
The invention concerns a phase locked loop speed control circuit for controlling the speeds of two or more objects. It includes pulse generators for generating reference pulses, first counters for...
5107157 Linear guide apparatus  
A linear guide apparatus comprises a fixed body; a movable body movable on the fixed body in a predetermined direction; a retainer disposed between the fixed and movable bodies, for rotatably...
5036262 Method of determining control instructions  
Methods for rapidly determining the discrete control information to independently propel a plurality of carriages with a synchronous linear motor divided into zones for control are useful for a...
4967122 Digital synchronizing circuit for brushless DC motor  
An acceleration system (10) for a brushless DC motor (12) is disclosed having the functional capability of rapid acceleration through one or more mechanical resonance points with electronic...
4955303 Linear motor feeder system  
The invention relates to a linear motor feeder system in which a linear motor is supplied with driving power from equipment on the ground. Divided armature coils are serially connected two by two...
4924164 Software zoning of conveyor control  
The assembly (10) is a self-propelled conveyor system including a vehicle (12) having wheels (18) and a motor (16) for moving the vehicle (12) along a track (20). The vehicle (12) includes a speed...
4853602 System for using synchronous secondaries of a linear motor to biaxially draw plastic films  
A system useful for controlling multiple secondaries of a linear disposed motor along an elongated path, with the system having a linear synchronous motor with its elongated primary disposed along...
4817494 Magnetic reconnection launcher  
An electromagnetic launcher includes a plurality of electrical stages which are energized sequentially in synchrony with the passage of a projectile. Each stage of the launcher includes two or more...
4808892 Bi-directional drive motor system  
A bi-directional drive motor of the type having a force coil suspended in a magnetic field of a magnetic core assembly is provided. The force coil is made larger than the center pole piece which it...
4731569 Apparatus for controlling a magnet in a magnetically suspended vehicle having a linear stator  
A magnet controller for a magnetically suspended vehicle of the linear stator type for travelling along a rail track (1) forming a linear stator having teeth of uniform determined width, responds...
4721892 Power supply apparatus for linear motor  
Disclosed is a power supply apparatus for a linear motor transportation system having a number of discrete linear motor units serially arranged along a track to generate a moving magnetic field for...
4714400 Plural robotic drive  
A robotic system includes two joints moving a common load-bearing member along a path for positioning a load. Each joint includes a linear electric motor and a feedback loop, the latter driving the...
Matches 1 - 50 out of 97 1 2 >