| Patent Number |
Title Of Patent |
Date Issued |
| 6617750 |
Microelectricalmechanical system (MEMS) electrical isolator with reduced sensitivity to inertial |
September 9, 2003 |
| Microelectricalmechanical systems (MEMS) manufactured on a microscopic scale using integrated circuit techniques may be used to measure a variety of parameters using electrical signals generated by the movement of small beams. Inertial noise may be canceled by the duplication of the beam |
| 6617657 |
Process for manufacture of micro electromechanical devices having high electrical isolation |
September 9, 2003 |
| The present invention relates to a fabrication process relating to a fabrication process for manufacture of micro-electromechanical (MEM) devices such as cantilever supported beams. This fabrication process requires only two lithographic masking steps and offers moveable electromecha |
| 6611416 |
Safety relay circuit for large power contactors |
August 26, 2003 |
| An apparatus and method for monitoring main contacts and auxiliary contacts of a power contactor is disclosed. The apparatus includes four circuits, the first of which has an on state in which a coil of the contactor is energized, and an off state. The first circuit switches from the off |
| 6611257 |
Automatic detection of touch plane type |
August 26, 2003 |
| A method of determining a type of touch plane operator input device comprises sensing the impedance across first and second terminals of a touch plane operator input device to distinguish the touch plane operator input device as being one of at least two different types of touch plane |
| 6606665 |
Multiple connection architecture for communication with a computer numerical control resident in |
August 12, 2003 |
| A workstation utilized in machine control. The workstation comprises a computer having an open control interface and a computer numerical control resident on the workstation. Communications between the computer and the computer numerical control are converted into an acceptable protocol |
| 6597146 |
Method and apparatus to compensate for cyclic load disturbances in a control system |
July 22, 2003 |
| A method and apparatus for essentially eliminating cyclic disturbances in a motor control system, the method including identifying frequencies of undesirable components in a feedback signal that exceed a threshold level and generating a combined signal including sine wave components |
| 6594126 |
Method and apparatus for extinguishing an arc through material surface ablation |
July 15, 2003 |
| A technique is provided for forcing greater voltage investment in an arc developed during interruption of a current carrying path. A source element is provided in a secondary current carrying path parallel to a primary path through the device. Upon interruption of the primary current car |
| 6593870 |
MEMS-based electrically isolated analog-to-digital converter |
July 15, 2003 |
| An isolated-ADC and a method for providing isolated analog-to-digital conversion are disclosed. The isolated-ADC includes a microelectromechanical system (MEMS), a comparator, and a digital-to-analog converter (DAC). The MEMS includes a beam element supported from a substrate for mov |
| 6591311 |
Method and system for selecting controller output value source |
July 8, 2003 |
| A method and system for selecting an output value source for an industrial control device are disclosed. The invention avoids the problems associated with conventional output devices by allowing a user to define one or more attributes associated with the output device, as well as definin |
| 6587122 |
Instruction syntax help information |
July 1, 2003 |
| A system for displaying instruction syntax help information to a user as instructions are entered into an editor or other tool. The instruction syntax is presented with the next parameter in the instruction highlighted to prompt the user for entry 6f that parameter. A database of instruc |
| 6583374 |
Microelectromechanical system (MEMS) digital electrical isolator |
June 24, 2003 |
| A microelectricalmechanical system (MEMS) digital isolator may be created in which an actuator such as an electrostatic motor drives a beam against a predefined force set, for example, by another electrostatic motor. When the threshold of the opposing force is overcome, motion of the bea |
| 6577483 |
Dynamic braking method and apparatus |
June 10, 2003 |
| 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 brake command is received, the po |
| 6569701 |
Method for fabricating an isolated microelectromechanical system device |
May 27, 2003 |
| A method is presented for fabricating an electrically isolated MEMS device having a conductive outer MEMS element, and an inner movable MEMS element spaced apart from the conductive outer MEMS element. The inner element includes a nonconductive base having a plurality of conductive struc |
| 6567761 |
In-die part measurement system |
May 20, 2003 |
| A part measurement system includes a press machine, a part measurement sensor and a press controller. The press machine includes a lower die coupled to an upper die, wherein the lower die includes a top surface supporting a strip of material to be formed into a part after a stripper |
| 6564702 |
System for measuring material in a press |
May 20, 2003 |
| A part measurement system includes a press machine, a material measurement sensor, and a press controller. The press machine includes a lower die coupled to an upper die, wherein the lower die includes a top surface supporting a strip of material to be formed into a part after a stripper |
| 6559658 |
Noise resistant electronic presence sensor |
May 6, 2003 |
| An electromagnetic field presence sensor independently evaluates the presence or absence of an object in a variety of frequency ranges. Conflicting indications of the presence of the object in these different ranges, such as may be caused by electromagnetic interference, is resolved |
| 6556950 |
Diagnostic method and apparatus for use with enterprise control |
April 29, 2003 |
| A data construct set and method for use with an industrial process which is controlled according to execution code wherein a processor running the code generates requests to mechanical resources to cause the resources to perform the process, the construct enabling generation of diagnosti |
| 6555935 |
Apparatus and method for fast FET switching in a digital output device |
April 29, 2003 |
| An industrial control output device is provided which provides electrical isolation between device power and field power. The device includes two isolation devices, one of which is adapted to energize a power switching device, and the other is adapted to de-energize the switching device. |
| 6553268 |
Template language for industrial controller programming |
April 22, 2003 |
| A programming language for programming industrial controllers in relay ladder logic language, the programming language including both extensions to standard RLL rung form itself and extensions wholly independent of the standard form. The language uses a plurality of templates, each templ |
| 6549434 |
Harmonic mitigating method and apparatus |
April 15, 2003 |
| A harmonic mitigating apparatus connected between a three phase power source and a load provides a multiple-winding reactor for reducing harmonics directed from the load to the source, the apparatus including, for each system phase, first and second line windings in series between th |
| 6549034 |
Programmable logic controller for safety systems with reduced cross-wiring |
April 15, 2003 |
| A safety system programmable logic controller provides for cross connection of inputs and outputs of separate independent control modules through the use of virtual wire connections passing as messages on a single logical backplane. The backplane executes a high level protocol that provi |
| 6546785 |
System and method for dynamic lubrication adjustment for a lubrication analysis system |
April 15, 2003 |
| A system and methodology is provided for dynamically adjusting fluids that operate as a lubricant in a machine, and for dynamically controlling fluid properties of a fluid that is operational in situ in a machine. The system includes a control module having a processor and one or more se |
| 6545860 |
Automation control enclosure having a glandplate to facilitate input and output connections |
April 8, 2003 |
| A system to facilitate the use of an automation control disposed within an enclosure. An automation control, such as a distributed motor starter, is disposed within an enclosure. The control is coupled to modules, such as I/O modules, mounted to a glandplate. The glandplate is mounted to |
| 6545456 |
Hall effect current sensor package for sensing electrical current in an electrical conductor |
April 8, 2003 |
| A Hall-effect sensor package for sensing electrical current in an electrical conductor, is provided which includes a ferromagnetic core having an air gap, the core allowing for the electrical conductor to pass therethrough. The sensor package also includes a Hall-effect generator, at |
| 6543978 |
Restraint method and apparatus for threaded fasteners |
April 8, 2003 |
| A method and apparatus for restricting rotation of a threaded fastener, the apparatus including a bracket member having a securing segment and an extending segment that are integrally linked wherein the securing segment forms a recess and the extending segment forms at least one restrain |
| 6541933 |
Angle control of modulating wave to reduce reflected wave overvoltage transients |
April 1, 2003 |
| Method and apparatus for eliminating greater than twice motor overvoltage by altering modulating signals provided to a PWM controller which in turn provides firing pulses to a PWM inverter. The modulating waves are altered by either tying them to positive or negative DC buses or limiting |
| 6535926 |
Time synchronization system for industrial control network using global reference pulses |
March 18, 2003 |
| Local clocks used for coordinating events in an industrial control system may be synchronized using time messages transmitted on standard communication networks. A master industrial controller incorporates a time values in a time messages transmitted to the other controllers, the time |
| 6532154 |
Stack assembly housing |
March 11, 2003 |
| A stack assembly comprising a housing into which an alternating sequence of elements such as heat sinks and printed circuit boards (PCBs) carrying press-packaged semiconductor devices may be mounted and placed under pressure by a clamping device for use in a variety of power system a |
| 6529785 |
Jog control for industrial control network |
March 4, 2003 |
| The method and system for an industrial control system network jog control of the present invention provides responsive jogging of a machine for a consistent, fixed duration that minimizes the effects of network and processor delays. A jog message is input at a human machine interface by |
| 6528988 |
Technique for programming a programmable device while coupled to another component in a circuit |
March 4, 2003 |
| A system and method for programming a Hall effect sensor while the sensor is connected into the circuitry for a given application. The system includes a fixture for receiving the printed circuit board to which the sensor is mounted. A plurality of contacts, such as pogo pins, are arr |
| 6522944 |
Driver board control system for modular conveyor with address-based network for inter-conveyor c |
February 18, 2003 |
| A method and control system are provided for controlling a modular conveyor system, which may be networked together with other such systems in order to implement a control strategy for a modular conveyor system. The control system comprises a communications port for interconnection of th |
| 6520464 |
Assembly for facilitating mounting and removal of an article |
February 18, 2003 |
| A mounting arrangement facilitates mounting and removal of an article, such as an elongated housing for a proximity sensor. A bracket and a coupling each have an aperture extending therethrough for receiving the article. A central axis extends through the apertures. The coupling includes |
| 6518528 |
Limit switch with direct opening action |
February 11, 2003 |
| A switch comprises a first and second contacts, a plunger, a toggle bar, and a spanner. A preferred trip lever arrangement is used in which a trip lever transfers an actuating force from the plunger to the toggle bar, and the toggle bar is caused to move farther than the plunger to provi |
| 6516279 |
Method and apparatus for calculating RMS value |
February 4, 2003 |
| A technique for computing RMS values for sampled waveforms. More specifically, a technique for computing RMS values for periodic waveforms, using data taken from a full waveform, a half waveform or some other portion of a waveform is described. Each RMS calculation is based on a diff |
| 6511328 |
Through panel wiring system |
January 28, 2003 |
| A programmable logic controller (PLC) assembly. The PLC assembly has a PLC and a protective enclosure having a through-panel connector. The PLC is housed within the protective enclosure and electrically coupleable to the through-panel connector. The through-panel connector has a connecto |
| 6510361 |
Computer numerical control utilizing synchronized logic execution in an open computer platform |
January 21, 2003 |
| A computer numerical control system for controlling and monitoring machine motion. The CNC system combines a CNC executive and a logic engine for controlling execution of a part program. The logic engine is capable of executing under an operating system of a personal computer. The logic |
| 6504356 |
Microelectro-mechanical high resolution current sensing apparatus |
January 7, 2003 |
| A current sensor includes a deflectable member disposed in a magnetic field. Nulling or compensating members may be mechanically coupled to the deflectable member. Feedback or readout devices coupled to the structure provide signals indicative of deflection of the deflectable member unde |
| 6501450 |
System for contrast control using linearized variable network of parallel resistive terms |
December 31, 2002 |
| A system for controlling contrast of a liquid crystal display is provided by means of a parallel network of resistors. A processor controls general operations of the system and is configured to determine a desired contrast setting of the LCD. The processor is operative to assign a binary |
| 6501282 |
Highly sensitive capacitance comparison circuit |
December 31, 2002 |
| A capacitance comparison circuit determines the relative value of two capacitors, such as may be sensor elements, by monitoring voltage changes caused by charge redistribution between the capacitors when they are series connected and then connected alternately in a first and second p |
| 6493202 |
Electromagnetic operator for an electrical contactor and method for controlling same |
December 10, 2002 |
| An electromagnetic operator includes first and second coils wound coaxially. An armature partially surrounds the coils for channeling flux during energization of the coils. The armature may be formed of a bent plate and secured to a ferromagnetic support. A control circuit applies en |
| 6487455 |
Distributed real time operating system |
November 26, 2002 |
| An operating system for distributed industrial controllers ensures the completion of enrolled application programs within a predetermined time span as is required for robust industrial control by preallocating dynamic and static hardware resources on a per application basis and in a mann |
| 6487091 |
Method and apparatus for supplying data and power to panel-supported components |
November 26, 2002 |
| A technique for supplying power and data signals to panel-mounted components includes distribution of power and data conductors in a trunk wireway and further distribution to component locations via drop cable assemblies disposed in drop wireways. The drop cable assemblies and trunk |
| 6483317 |
System for identifying valid connections between electrical system components and responding to |
November 19, 2002 |
| Circuitry for protecting a first electrical system when connected to a second electrical system via a bus which provides a current-carrying signal to the first electrical system and includes a reset signal which is monitored by the second electrical system. The circuitry includes a c |
| 6477067 |
Method and apparatus for compensating for device dynamics in inverter based control systems |
November 5, 2002 |
| A method and apparatus for reducing distortion at the outputs of an inverter system, the apparatus including a polarity discriminator for determining the polarity of a current passing through an output terminal to a load, a compensator programmed with different upper and lower compen |
| 6470377 |
Networked file operations for computer numerical controls |
October 22, 2002 |
| A networked system combines multiple workstations, storage devices and file handlers with multiple computer numerical controls. Typically, each workstation comprises a personal computer with a Windows-based operating system utilizing a standard process-to-process communication protocol, |
| 6469916 |
Method and apparatus for compensating for device dynamics and voltage drop in inverter based con |
October 22, 2002 |
| A method for mitigating current distortion on inverter supply lines that supply a load with power from a PWM inverter, the inverter including a switch and diode bridge constructed using devices that are characterized by losses that cause current distortion, the invert, lines and load |
| 6466005 |
High resolution current sensing apparatus |
October 15, 2002 |
| A current sensor includes a deflectable member disposed in a magnetic field. Nulling or compensating members may be mechanically coupled to the deflectable member. Feedback or readout devices coupled to the structure provide signals indicative of deflection of the deflectable member unde |
| 6465728 |
Spring clip for electronic device and heat sink assembly |
October 15, 2002 |
| An electronic device/heat sink assembly having at least first and second heat generating electronic devices, a heat sink member, a resilient integral spring clip, the clip including a base member and first and second oppositely facing resilient leg members extending from opposite end |
| 6463339 |
High reliability industrial controller using tandem independent programmable gate-arrays |
October 8, 2002 |
| A highly reliable industrial controller uses low complexity field programmable gate-arrays (FPGA) in lieu of standard microprocessors where each FPGA is programmed so as to provide for a different internal implementation of the control program as a set of interconnected logical gates |
| 6463338 |
Industrial controller and network card with buffer negotiation |
October 8, 2002 |
| An interface for a network communication card for industrial controllers uses a dual-port memory that may be re-partitioned by values communicated through the dual-port memory itself. A default partitioning and a non re-partitionable common area allow flexible re-partitioning without |
