Glam girl Heddy Lamar may have used her good looks to good effect on the silver screen, but she put her smarts to better use as an inventor. During World War II, she co-patented a frequency-switching system for torpedo guidance that was considered years ahead of its time.
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| Number | Title | Issue Date |
| 6687649 | System, method and computer program for a synoptic interlock prompting and input override system with a maintenance log A system, method and computer program for facilitating the operation of a control system utilizing one or more input devices is disclosed. The control system provides the ability to monitor and modify operating parameters of the input devices. A function ... | 02/03/2004 |
| 6587884 | Dual ethernet protocol stack for maximum speed access to a programmable logic controller (PLC) A control system includes an Internet web interface to a network of at least one programmable logic control system running an application program for controlling output devices in response to status of input devices. The Web interface runs Web pages from ... | 07/01/2003 |
| 6587900 | System for communicating diagnostic data in an industrial control system A system and corresponding method for communicating non-I/O data between components of an industrial control system (ICS) including control or automation devices and a programmable logic controller. The method includes the steps of: having one of the comp... | 07/01/2003 |
| 6493661 | Reusable multi-language support facility for software A software system that includes text messages intended for viewing by a user, where the user can select at any time from various supported spoken languages, the language in which the text messages are to be provided, i.e. a multi-language software system.... | 12/10/2002 |
| 6483289 | Modular sensor array, metering device and mounting and connection base A metering module has a housing, a metering circuit in the housing for receiving and processing at least one signal corresponding to an electrical quantity, and developing an output signal. A connector mounted to the said housing is coupled to the meterin... | 11/19/2002 |
| 6484061 | Web interface to a programmable controller A control system includes an Internet web interface to a network of at least one programmable logic control system running an application program for controlling output devices in response to status of input devices. The Web interface runs Web pages from ... | 11/19/2002 |
| 6466995 | Messaging application layer over ethernet to transport layer (TCP) communications method and apparatus for a modular terminal input/output system A communications adapter and method are provided for interfacing between a master device and an I/O device (body) having an output and/or an input. In the case of the I/O body having an output, the adapter has a TCP port for coupling to the master device ... | 10/15/2002 |
| 6452360 | Auto tuning and parameter identification of a control circuit A method for calculating a first and second gain for a controller circuit for a plant is disclosed. The method comprises the steps of providing a reference model circuit with desired circuit characteristics, providing a reference model adaptive circuit, s... | 09/17/2002 |
| 6448920 | System and method for converting analog values to and from real world values A first system is provided having a plurality of analog input signals for a plurality of analog input devices. Each analog input signal has an analog input signal value. The first system converts each analog input signal value to an ultimate digital input... | 09/10/2002 |
| 6446102 | Method and device for high speed scale conversion A method and a device for high-speed scale conversion wherein a value N within a range of N1 and N2 is converted into a small value M within a range of M1 and M2. The method includes the step of obtaining an approximate value of M by loading the value (N-... | 09/03/2002 |
| 6434157 | MODBUS plus ethernet bridge A bridge is disclosed for providing a connection between a MODBUS Plus network and an Ethernet network. The bridge includes a MODBUS circuit board, an Ethernet circuit board, and a CPU. The MODBUS circuit board is operably coupled to the local area networ... | 08/13/2002 |
| 6399876 | Transformer cooling method and apparatus thereof This invention relates to a cooling system for a transformer. Cooling panels of a radiator are fluidly connected to the transformer. Plates are positioned adjacent to or toward the ends of the cooling panels to form an enclosed flow path thereby increasin... | 06/04/2002 |
| 6397322 | Integrated intrinsically safe input-output module A method and system for performing a task in an intrinsically safe environment using an intrinsically safe, integrated module located on the safe side to convey signals to and from a field device on the hazardous side. The integrated module is configurabl... | 05/28/2002 |
| 6381834 | Method for dampening acoustical noise in a dry-type transformer A dry-type power transformer has a lower acoustical noise level by inserting sound absorbing pads at predetermined locations in an air gap formed longitudinally between a low voltage coil and its corresponding leg member of the transformer's iron core. Th... | 05/07/2002 |
| 6368530 | Method of forming cooling ducts in cast resin coils An improved method for creating cooling ducts in cast resin coils uses uniform cross section thermoplastic tooling segments. These segments are wound into windings between predetermined layers or radial sections, oriented parallel to the coil axis. They e... | 04/09/2002 |
| 6327511 | Input/output (I/O) scanner for a control system with peer determination The present invention is directed to an apparatus for communication with at least one device which resides on a standard communications network using a standard communications protocol. The apparatus has a scanner for scanning the device, a device scan ta... | 12/04/2001 |
| 6321272 | Apparatus for controlling internetwork communications An interface allows for the transfer of real time control data with guaranteed delivery times between devices on a general purpose network and an industrial control system. A proxy server takes the role of a TCP/IP router and is configured to control the ... | 11/20/2001 |
| 6282454 | Web interface to a programmable controller A control system includes an Internet web interface to a network of at least one programmable logic control system running an application program for controlling output devices in response to status of input devices. The Web interface runs Web pages from ... | 08/28/2001 |
| 6233626 | System for a modular terminal input/output interface for communicating messaging application layer over encoded ethernet to transport layer A communications adapter is provided for interfacing between a master device and an I/O device (body) having an output and/or an input. In the case of the I/O body having an output, the adapter has a TCP port for coupling to the master device via a transm... | 05/15/2001 |
| 6188298 | Winding transient suppression technique The present invention relates to a transformer having a conductive element spiraling along the length of an insulated wire of the coil. When formed into plurality of adjacent turns, the conductive element couples one of the plurality of turns with another... | 02/13/2001 |
| 6177848 | High frequency snubber for transformers The present invention relates to a transformer comprising a coil having an insulated wire formed into a plurality of turns defining a layer and a resistive element wrapped around the outer surface of the layer. The resistive element couples one of the plu... | 01/23/2001 |
| 6157282 | Transformer cooling method and apparatus therefor This invention relates to a cooling system for a transformer. A winding defining a coil, including a duct having an open top and bottom, is sealed to a sleeve, thus forming a closed circulatory path. A fluid is retained and circulated within the circulato... | 12/05/2000 |
| 6151640 | Control I/O module having the ability to interchange bus protocols for bus networks independent of the control I/O module A field bus network of input and output devices is coupled to a control system through an I/O interface module, regardless of their data structures. The I/O interface module is coupled to the control systemthrough a serial communication port. Local input ... | 11/21/2000 |
| 6151625 | Internet web interface including programmable logic controller for controlling output devices based on status of input devices A control system includes an Internet web interface to a network of at least one programmable logic control system running an application program for controlling output devices in response to status of input devices. The Web interface runs Web pages from ... | 11/21/2000 |
| 6147580 | Strip wound induction coil with improved heat transfer and short circuit withstandability An improved low voltage winding for dry insulated transformer has its windings resin encapsulated. The winding is constructed with flexible sheet conductors wound coincident with an insulating sheet material. Insulating spacers provide a means to form air... | 11/14/2000 |
| 6107769 | Positional-based motion controller with a bias latch A motion controller and a method of controlling the motion of a plurality of axes which prevents a discontinuous position command being generated to a follower axis. A follower mode transfer function circuit or routine generates a position command in resp... | 08/22/2000 |
| 6104612 | Clip-on heat sink The heat sink (10) of the present invention is used to absorb and dissipate heat from a solid-state device. The heat sink (10) comprises a generally U-shaped body (18) of a thermally conductive material. The U-shaped body (18) comprises two continuous leg... | 08/15/2000 |
| 6100783 | Energy efficient hybrid core A hybrid transformer core assembly having a first leg having a first end and a second end, a second leg having a first end and a second end, and opposing first and second yokes coupling the first and second legs to the first and second yokes to create a c... | 08/08/2000 |
| 6087613 | Process monitor for a weld controller A weld controller maintains an internal dynamic model of load impedance, which tracks normal impedance variations that occur as the weld tooling degrades. The weld controller contains a weld process monitor function that tests an estimated load impedance ... | 07/11/2000 |
| 6084372 | Electronic gearing from/to non-zero follower motion with phase adjust A motion controller and a method of controlling the motion of a plurality of axes which prevents a discontinuous position command being generated to a follower axis. A follower mode transfer function circuit or routine generates a position command in resp... | 07/04/2000 |
| 6072783 | I/O module for a serial multiplex data system with a programmable communication module selector A programmable data link module is used on a time division multiplex data bus. The module is functional as an input device, an output device, or both as an input and output device. It can receive data from the data bus during the selected time slot for a ... | 06/06/2000 |
| 6061603 | System for remotely accessing an industrial control system over a commercial communications network A control system allows a user to access a programmable logic controller (PLC). system over a communication network such as an Internet network using a web browser. The system includes an Internet web interface between the network and the programmable log... | 05/09/2000 |
| 6013892 | Resistance weld control with line impedance compensation A phase controlled weld controller system uses an internal model of weld line and load impedance and of open circuit weld input voltage to develop a nominal firing angle sequence to maintain a desired weld current sequence. The weld controller computes a ... | 01/11/2000 |
| 5991774 | Method for identifying the validity of an executable file description by appending the checksum and the version ID of the file to an end thereof A method for uniquely identifying a file, along with its particular version ID, used in an application program by a central processing unit provides a system for file security. The method computes a CRC for a file and then appends a version string and CRC... | 11/23/1999 |
| 5982645 | Power conversion and distribution system A power conversion system is described which includes a power input for accepting a waveform at a given power level and frequency, and a power output for providing an output waveform at a second given power level. A DC to AC converter accepts a waveform b... | 11/09/1999 |
| 5963022 | Method and apparatus for compensating phase distortion caused by a high impedance voltage source A phase control system has a stable timebase phase reference generated by an internal phase reference generator. The control includes a method for estimating and compensating phase distortion when an inductive load is driven by an AC voltage source having... | 10/05/1999 |
| 5963450 | Operator interface unit for monitoring and controlling devices having dissimilar data structures An operator interface unit for monitoring and controlling controllers coupled to a communications network has a common database that is accessible across the network, regardless of each controllers data structure. The operator interface unit provides an a... | 10/05/1999 |
| 5960174 | Arbitration method for a communication network A communications network is used to couple weld controllers and different operator interface units together, regardless of their data structures. An arbitration system provides a means for one operator interface unit to communicate to a selected weld cont... | 09/28/1999 |
| 5953226 | Control system having an application function with integrated self diagnostics A self diagnostic system is integrated into an application program for controlling a machine or process. The application program is comprised of various logical segments that have to be solved by a logic solving engine. The diagnostic program will annunci... | 09/14/1999 |
| 5929855 | Monitoring and control system using graphical representations with prelinked parameters for devices within a network A user interface for a control structure comprising a controller, and physical devices coupled to the controller is disclosed. The controller is adapted to control and monitor the physical devices. The user interface is coupled to the controller for displ... | 07/27/1999 |