Control Of Temperature Patents (Class 700/202)
  • Patent number: 11958226
    Abstract: In one aspect, there is provided an injection molding system configured to operate in a plurality of cycles. The system comprises, amongst other things, a controller that is configured for performing a comparison of a variable pressure setpoint with a target pressure value. The controller is configured to, when the target pressure value is less than the variable pressure setpoint by at least a predetermined lower bound, (i) decrease the variable pressure setpoint to a reduced variable pressure setpoint and (ii) not further decrease the variable pressure setpoint from the reduced variable pressure setpoint until the pump assembly operates for a plurality of stabilizing cycles at the reduced variable pressure setpoint.
    Type: Grant
    Filed: September 21, 2020
    Date of Patent: April 16, 2024
    Assignee: Husky Injection Molding Systems Ltd.
    Inventors: Weichun Yu, Gregory Allan Schultz
  • Patent number: 11921526
    Abstract: A method for controlling a heated process of an electric heater includes obtaining a setpoint variable indicating a target temperature of the heater. The method includes identifying an energy profile for the heater based on the setpoint variable. The energy profile provides a defined magnitude of initial electrical energy to be applied to the heater to have a temperature of the heated process reach the target temperature. The method includes obtaining a process variable indicating a performance characteristic of the heated process. The method includes providing electrical energy to the heater based on at least one of the energy profile and the process variable.
    Type: Grant
    Filed: September 2, 2021
    Date of Patent: March 5, 2024
    Assignee: WATLOW ELECTRIC MANUFACTURING COMPANY
    Inventors: Andrew Oplawski, Jeremy Quandt, Keith Ness, Jacob Lindley
  • Patent number: 11754308
    Abstract: A system and method for cooling a building using cool fresh outside air is disclosed. When the integrated thermostat is operating during a heating period, the integrated thermostat operates a remote air conditioning unit, such as a furnace, an HVAC unit, an electric baseboard heater, or a heat pump, to heat air provided to the building interior. When the integrated thermostat is operating during a cooling period or a fresh air cooling period, the integrated thermostat compares the indoor air temperature with the temperature of the outdoor fresh air. The integrated thermostat operates a remote fan, such as a whole-house exhaust fan, to draw the cooler fresh air into the building interior in response to the outdoor air temperature being less than the indoor air temperature and/or in response to the indoor temperature being greater than a fresh air cooling set point stored in the memory.
    Type: Grant
    Filed: August 25, 2022
    Date of Patent: September 12, 2023
    Inventor: Jason Sullins
  • Patent number: 11186951
    Abstract: When the efficiency of heating with steam is enhanced by adding a condensed water film formation-suppressing amine in a heating step of heating a material to be heated with the steam via a metallic material, the amount of the condensed water film formation-suppressing amine to be added is controlled based on any of the concentration of the condensed water film formation-suppressing amine in a drain, the pH of the drain, the electroconductivity of the drain, the amount of the drain, the amount of the steam, the temperature of the drain, the temperature of the metallic material, and the amount of the metallic material eluted in the drain.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: November 30, 2021
    Assignee: KURITA WATER INDUSTRIES LTD.
    Inventors: Shintaro Mori, Hideki Nishida, Shogo Ujiie, Qian Lin
  • Patent number: 9728923
    Abstract: A power supply of a transformer outputs alternating current (AC) and direct current (DC) and contains: a housing and a lid for covering a first end of the housing. An input interface is formed on a second end of the housing, and the lid includes a DC output interface and an AC output interface. A light string contains a power supply of a transformer and a light emitting unit, the power supply outputs alternating currents (AC) and direct currents (DC), and the power supply contains: a housing and a lid for covering a first end of the housing. An input interface is formed on a second end of the housing, the lid includes a DC output interface and an AC output interface, and the DC output interface couples with a DC output connector, and the DC output connector connects with plural bulbs of the light string.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: August 8, 2017
    Assignee: GUANG ZHOU TING SHEN ELECTRIC CO., LTD.
    Inventor: Chia-Chun Wang
  • Patent number: 8798783
    Abstract: The object of the present invention is to provide a remote assistant system for a foundry, i.e., a plant that comprises a plurality of machines. The remote assistant system in a foundry includes a first sequencer for controlling a molding line and a second sequencer for controlling a molding machine. It further includes a sequencer-communicating mechanism for connecting the first sequencer to the second sequencer, a first mobile computer for transmitting information by video images, etc. to a remote location, a mechanism for providing communication between mobile computers to selectively connect one of the sequencers to the first mobile computer, a second mobile computer for receiving the information from the first mobile computer, for displaying the information, and for correcting the ladder logic program and giving instructions to the operator by an assistant at a remote location.
    Type: Grant
    Filed: February 8, 2010
    Date of Patent: August 5, 2014
    Assignee: Sintokogio, Ltd.
    Inventors: Akiyoshi Niinomi, Yoshitake Kawamoto, Yasuhiro Miwa, Nobuaki Natsume, Kenji Ishiguro
  • Patent number: 8501060
    Abstract: For controlling temperature in the molding of plastics, metal, ceramic, or die-casting, a circulator supporting a molding machine includes a fixed displacement pump driven by an electronic servo motor for volumetric metering of thermal fluid to or from the molding machine. A pre-set or dynamically controlled volume and flow rate profile matches the heating and cooling requirement of a molding machine and process. Volumetric metering may be based on parameters such as time, machine cycle status, temperature, pressure, and/or flow rate. Fluid may be circulated through the mold at positive or negative pressure at fixed, variable, or pulsed flow. The supply side in a fluid loop may be restricted so as to cause a pressure drop in or upstream of the mold, die or barrel, and seed bubbles may be injected into the fluid flow to excite vaporization and lowering of the fluid temperature.
    Type: Grant
    Filed: February 13, 2007
    Date of Patent: August 6, 2013
    Assignee: MoldCool International LLC
    Inventor: Kenneth E. Johnson
  • Patent number: 8457775
    Abstract: A method for defining a uniform injection molding interface includes selecting at least one common control parameter from multiple injection molding machines, setting at least one standardization page, establishing a uniform injection molding interface by configuring the at least one common control parameter into the at least one standardization page, storing the data related to the uniform injection molding interface into a storage unit, and connecting the uniform injection molding interface to the control device via an input control device to enable the control device to control the multiple injection molding machines in response to the control parameters set via the uniform injection molding interface.
    Type: Grant
    Filed: September 17, 2009
    Date of Patent: June 4, 2013
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Mi-Chien Chen, Hsien-Cheng Kuo, Wei Zeng
  • Patent number: 8306669
    Abstract: A thermostat-controlled heater/cooler is used to condition air in a temperature-controlled region. A target temperature is obtained and compared to the temperature of the region to determine if heating/cooling is required. If yes, then outside air is directed into the region without operating heater/cooler and updated temperatures of the region are measured. The directing and measuring are continued until (1) the measured temperature equals the target temperature, at which time control returns to the obtaining a target temperature step, or (2) the updated measured temperature differs from the target temperature by a chosen amount, and in some examples, if the updated temperature does not reach the target temperature within a chosen length of time, or the target temperature changes, or the program segment ends, at which time directing outside air into the temperature-controlled region is stopped and the heater/cooler is operated under control of the thermostat.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: November 6, 2012
    Assignee: Tim Simon, Inc.
    Inventors: Blaine M. Smith, Matthew T. Fisher
  • Publication number: 20120277900
    Abstract: There is set forth a system comprising an injection molding assembly mold and a processing circuit. The mold can have a stationary section and a moveable section. The stationary section can have a channel assembly and one or more nozzle. The processing circuit can comprise one or more processor, a communication interface, and a memory including a volatile memory and a non-volatile memory. The processing circuit can be mounted to the stationary section or the moveable section in a manner that the processing circuit can be supported in a fixed position relative to the stationary section or the moveable section. The mold can further comprise one or more sensor unit, each sensor unit including one or more sensor.
    Type: Application
    Filed: April 29, 2011
    Publication date: November 1, 2012
    Applicant: Mold-Masters (2007) Limited
    Inventor: Bruce Catoen
  • Patent number: 8239066
    Abstract: The disclosure provides systems and methods of use of an HVAC graphical interface dashboard. In various embodiments, the dashboard includes a weather tab, wherein invoking the weather tab advances to a weather screen. The dashboard also includes an indoor humidity tab. A programs tab and a home tab are also provided. The dashboard further comprises: a) a screen that employs a backlight to display information to a user; b) a backlight, and c) a motion detector, wherein the backlight is turned on by the motion detector upon a detection of motion.
    Type: Grant
    Filed: October 21, 2009
    Date of Patent: August 7, 2012
    Assignee: Lennox Industries Inc.
    Inventors: Jacob Jennings, Thomas Gerald Pavlak, Amanda Filbeck, Christopher W. Spencer
  • Patent number: 8234013
    Abstract: A semiconductor manufacturing system includes a semiconductor manufacturing apparatus, a first controller for controlling the semiconductor manufacturing apparatus, an auxiliary machine for the semiconductor manufacturing apparatus, a second controller for controlling the auxiliary machine, and a third controller for electrically coupling the first and second controllers. The second controller outputs an auxiliary machine-in-operation signal to the third controller when the auxiliary machine is operating, outputs an auxiliary machine-stopping signal to the third controller when the auxiliary machine is stopping, and operates or stops the auxiliary machine according to an instruction signal received from the third controller.
    Type: Grant
    Filed: November 5, 2010
    Date of Patent: July 31, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Tetsu Tomine, Atsushi Osada
  • Patent number: 8155782
    Abstract: A fluid heating apparatus heats fluid in a passage to a target temperature. The fluid heating apparatus includes a fluid heating unit that heats the fluid, a fluid temperature measuring unit that measures a temperature of the fluid, and a pressure control unit that controls a pressure in the passage such that the pressure becomes equal to a target pressure. While the fluid in the passage is heated to the target temperature and when a temperature estimated from the thermal conductivity and specific heat is not increased, the pressure control unit increases the target pressure. According to a fluid heating method, when the fluid is heated by the fluid heating apparatus, the pressure control unit controls the pressure of the fluid such that the pressure becomes equal to or higher than a critical pressure.
    Type: Grant
    Filed: August 3, 2007
    Date of Patent: April 10, 2012
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Kenzo Oshihara, Ryuuta Yamaguchi
  • Patent number: 8114321
    Abstract: A method and apparatus are disclosed for managing thermal energy transfer between a mold, die or cavity and a thermal transfer fluid. The thermal energy being exchanged with the mold, die or cavity is calculated in real time as a function of the temperature differential between inlet and outlet fluid temperatures, the volumetric rate of fluid delivery, and known characteristics of the fluid. The rate of thermal energy exchange is controlled by varying the fluid delivery rate in accordance with a desired thermal energy exchange profile.
    Type: Grant
    Filed: February 13, 2006
    Date of Patent: February 14, 2012
    Assignee: MoldCool International, LLC
    Inventor: Kenneth E. Johnson
  • Patent number: 8055391
    Abstract: A server device constituting a group management system includes one or more manufacturing apparatuses for performing a preset process on a target substrate, and the server device includes a measurement information storage unit for storing therein one or more measurement information; an instruction receiving unit for receiving an output instruction of the measurement information, which contains information specifying a predetermined start point and valid time information; a measurement information acquisition unit for acquiring, from the measurement information storage unit, measurement information ranging from the predetermined start point to a time point of the valid time; an output information composing unit for composing output information by using the acquired measurement information; and an output unit for outputting the output information composed by the output information composing unit.
    Type: Grant
    Filed: July 9, 2007
    Date of Patent: November 8, 2011
    Assignee: Tokyo Electron Limited
    Inventors: Masashi Takahashi, Minoru Obata, Noriaki Koyama
  • Publication number: 20110184550
    Abstract: A single stand alone controller system (100) for controlling combination of hot-runner system (102) and mold assembly (104), assembly (104) connectable to system (102), controller system (100) comprising: processor (110); interface modules (112) configured to operatively couple to system (102) and assembly (104), processor (110) connected with modules (112); and controller-usable medium (114) embodying instructions (116) executable by processor (110), processor (110) connected with said medium (114), instructions (116) including: executable instructions for directing said processor (110) to control said system (102) and said assembly (104).
    Type: Application
    Filed: January 25, 2010
    Publication date: July 28, 2011
    Applicant: Husky Injection Modling Systems Ltd.
    Inventors: Angelo MIER, Keith Carlton, David Scott Rotondo
  • Publication number: 20100332018
    Abstract: A method for defining a uniform injection molding interface includes selecting at least one common control parameter from multiple injection molding machines, setting at least one standardization page, establishing a uniform injection molding interface by configuring the at least one common control parameter into the at least one standardization page, storing the data related to the uniform injection molding interface into a storage unit, and connecting the uniform injection molding interface to the control device via an input control device to enable the control device to control the multiple injection molding machines in response to the control parameters set via the uniform injection molding interface.
    Type: Application
    Filed: September 17, 2009
    Publication date: December 30, 2010
    Applicants: HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: MI-CHIEN CHEN, SHIEN-CHENG KUO, WEI ZENG
  • Patent number: 7831323
    Abstract: A flexible control system and method of controlling a processing operation. The control system and method may be employed to control a high speed manufacturing system for processing articles of manufacture requiring processes to be performed on the articles at a pre-selected processing rate includes a trunk for simultaneously conveying a plurality of the articles of manufacture at the pre-selected processing rate in a first mode of motion from the beginning of the manufacturing system to the end of the system. At least one branch processing station is positioned intermediate the beginning and the end of the trunk wherein the branch processing station during its operation performs at least one process on articles of manufacture conveyed on the branch processing station and where the articles are conveyed in a second mode of motion.
    Type: Grant
    Filed: January 10, 2007
    Date of Patent: November 9, 2010
    Assignee: Eveready Battery Company, Inc.
    Inventors: Patrick Weber, Suresh Viswanathan
  • Patent number: 7788545
    Abstract: A broadcast receiving device includes a card slot, a fan, a temperature sensor, a memory component and a control unit. The card slot accepts an IC card. The fan rotates to cool the IC card. The temperature sensor measures a first temperature. The memory component stores correlation information indicating a correlation between the first temperature and a second temperature of the IC card. The control unit acquires the second temperature based on the first temperature and the correlation information. The control unit determines if the second temperature exceeds a predetermined temperature. The control unit switches from a first output mode, in which an audio-video signal is outputted via the IC card, to a second output mode, in which the audio-video signal is outputted by bypassing the IC card, when the control unit determines that the second temperature exceeds the predetermined temperature.
    Type: Grant
    Filed: March 6, 2008
    Date of Patent: August 31, 2010
    Assignee: Funai Electric Co., Ltd.
    Inventor: Tsutomu Yanagi
  • Patent number: 7671304
    Abstract: A multiple zone temperature controller for a hot runner injection molding system. The temperature controller includes inputs for signals from two or more thermocouples corresponding to two or more heating zones. The thermocouple inputs are time-division multiplexed and the output is amplified and input to a microcontroller. The microcontroller manages and controls operation of power switching stages for controlling the power supplied to heating elements corresponding to each of the heating zones. The multiplexer is a low impedance switch.
    Type: Grant
    Filed: October 18, 2005
    Date of Patent: March 2, 2010
    Assignee: Mold-Masters (2007) Limited
    Inventor: James Nguyen
  • Patent number: 7647134
    Abstract: There are provided a method of operating a temperature management device. For example, there is disclosed a method of operating a temperature management device. The method comprises transmitting towards the temperature management device a probe, the probe having a pre-determined format; receiving a probe response, the probe response being representative of at least one dynamic operational characteristic of the temperature management device; analyzing the probe response to obtain a control parameter suitable for controlling operation of the temperature management device.
    Type: Grant
    Filed: September 18, 2007
    Date of Patent: January 12, 2010
    Assignee: Husky Injection Molding Systems Ltd.
    Inventor: Majid Khadem Sameni
  • Patent number: 7507359
    Abstract: The invention relates to a method and to a device for controlling/regulating the distribution of the injection molding compound in multi-cavity injection molds, especially for molds with a large number of cavities, for example 48 to 128 cavities. The invention distributes the injection molding compound in groups of, for example, four to twelve nozzles. Each group is provided with one classical nozzle, as the master nozzle, that is controlled via the local heating capacity and temperature sensors. All other nozzles or cavities of the same group are configured as slave nozzles that have no temperature sensors. The virtual actual temperatures are computed via saved model computations and are displayed on the user panel. The user is thus provided with the desired/actual temperature values for every nozzle and can thus influence every single nozzle, depending on the result, in the form of temperature values.
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: March 24, 2009
    Assignee: Nestal-Maschinen AG
    Inventor: Friedrich Werfeli
  • Publication number: 20090076644
    Abstract: There are provided a method of operating a temperature management device. For example, there is disclosed a method of operating a temperature management device. The method comprises transmitting towards the temperature management device a probe, the probe having a pre-determined format; receiving a probe response, the probe response being representative of at least one dynamic operational characteristic of the temperature management device; analyzing the probe response to obtain a control parameter suitable for controlling operation of the temperature management device.
    Type: Application
    Filed: September 18, 2007
    Publication date: March 19, 2009
    Inventor: Majid Khadem Sameni
  • Patent number: 7480542
    Abstract: An injection mold apparatus has multiple injection zones, each zone having at least one heater and at least one temperature sensor generating a temperature indicating signal. A power source provides power to the heaters. A controller controls the temperature of at least some of the zones. For efficiency, the controller has two separate processors, a data-receiving processor for receiving temperature indicating signal from each sensor as well as power signals, and a control processor for receiving data from the data-receiving processor and for controlling the amount of power provided to the heaters. Preferably, the control is in a housing, with the housing mounted directly on the mold. Modified PID calculations are utilized. Power calculations for the amount of power to the heaters utilizes a modulo based algorithm.
    Type: Grant
    Filed: January 23, 2003
    Date of Patent: January 20, 2009
    Assignee: Caco Pacific Corporation
    Inventors: Charles R. Kroeger, Rolf T. Anderson, Keith A. Rubow
  • Patent number: 7465417
    Abstract: The present invention provides a method and system for controlling the quality of a product produced by an injection molding production process. The invention includes performing a multivariate analysis on injection molding process data collected real-time and determining whether the real-time data is within a predetermined production control limit. When the real-time production data exceeds the control limit, the process is considered out of control and product produced during the out of control condition is removed real-time from the injection molding production process.
    Type: Grant
    Filed: July 19, 2004
    Date of Patent: December 16, 2008
    Assignees: Baxter International Inc., Umetrics AB
    Inventors: Lee Merrill Hutson, Svante Wold
  • Patent number: 7343505
    Abstract: A method and system are provided for thermal management of a CPU. Both hardware and software data are used to periodically calculate a power consumption index. An internal database is provided to convert power consumption data to rotational speed of an associated cooling fan for the CPU. Based upon a change in the calculated power consumption, the rotational speed of the fan may be adjusted to accommodate the change in power consumption. Accordingly, the method and system monitors and adjusts the rotational speed of the cooling fan based upon available hardware and software data.
    Type: Grant
    Filed: October 28, 2004
    Date of Patent: March 11, 2008
    Assignee: International Business Machines Corporation
    Inventors: Yuji Chotoku, Rieko Kataoka, Takayuki Katoh
  • Publication number: 20080039970
    Abstract: Disclosed is: (i) a method of a molding system, (ii) a controller of a molding system, (iii) an article of manufacture of a controller of a metal molding system, (iv) a network-transmittable signal of a controller of a molding system and/or (v) a molding system, amongst other things.
    Type: Application
    Filed: August 14, 2006
    Publication date: February 14, 2008
    Inventors: Jan Marius Manda, Robert Domodossola
  • Patent number: 7218990
    Abstract: A barrel has an injection nozzle at the forward end, and an injection screw inside, and heaters in the outer circumference. The barrel injects the molten resin from the injection nozzle at the forward end by the rotation of the injection screw. In the barrel, the temperatures of each parts are controlled by a temperature control section. A controller sets a shift minus temperature to uniformly lower the temperature of the parts, and a shift absolute temperature to lower the temperatures of the parts to a predetermined temperature. An operation panel section selects the shift minus temperature or shift absolute temperature to lower the temperatures of the parts. The temperature control section lowers the temperatures of the parts of the barrel by using the temperature selected when the injection molding machine is temporarily stopped.
    Type: Grant
    Filed: April 12, 2006
    Date of Patent: May 15, 2007
    Assignee: Toshiba Kikai Kabushiki Kaisha
    Inventors: Hiroshi Katsuta, Hirotaka Sekino, Ryoji Tominaga, Kunihiko Noda, Yasumasa Sugiyama, Takato Baba
  • Patent number: 7181311
    Abstract: A plastics processing machine, in particular injection molding machine or extruder, includes at least one component represented by a clamping unit, feed and metering apparatus, plasticizing unit, injection unit, or separate injection apparatus, and characterized by specific parameters for carrying out at least one working or process step. A control device is connected to the at least one component and configured to control the at least one component, with the component-specific parameters being useable in the control device for control of the component. Provided for the component is a separate memory device in which the component-specific parameters are stored and can be transmitted to the control device prior to or upon startup of operation of the component.
    Type: Grant
    Filed: August 29, 2005
    Date of Patent: February 20, 2007
    Assignee: Demag Ergotech GmbH
    Inventors: Oswald Dachs, Karl Rudolf Lüttich, Gerd Warnecke, Andreas Melkus
  • Patent number: 7058475
    Abstract: A system for integrating a software programmable logic controller functions along with the human machine interface functions for plastics molding machines is disclosed. A general purpose computer integrates the programmable logic controller functions of monitoring and controlling input output devices and sensors along with the human machine interface functions of monitoring and presenting the status of the plastics molding to an operator. Through this system, primarily the data latency exhibited between the human machine interface and the programmable logic controller are eliminated, along with the cost of maintenance and upgrade of the machine.
    Type: Grant
    Filed: January 10, 2003
    Date of Patent: June 6, 2006
    Assignee: Siemens Energy & Automation, Inc.
    Inventor: Matthias Erhardt
  • Patent number: 7020540
    Abstract: A method and apparatus are disclosed for controlling temperature of a plant comprising plural temperature control zones, wherein an effective control parameter for a first zone for which a signal representing measured temperature is available is produced according to an algorithm relating measured temperature, a desired temperature and a control parameter associated with a device affecting temperature in the first temperature control zone, the effective control parameter is summed with an offset value representing a proportional offset of the effective control parameter of a second temperature control zone relative to the effective control parameter of the first temperature control zone and the result is applied to control a device affecting temperature in the second temperature control zone.
    Type: Grant
    Filed: May 14, 2004
    Date of Patent: March 28, 2006
    Assignee: D-M-E Company
    Inventors: Thomas Linehan, Fred Schroeder
  • Patent number: 6874561
    Abstract: A method (300) and a system (100) for controlling a casting process are described herein. The system (100) generally includes a die casting device (110) and a measuring device (120). The die casting device (110) includes a mold (130) configured to produce molded parts (140). The measuring device (120) may determine a position of the mold (130) within the die casting device (110) in a casting cycle. The measuring device (120) may determine an incremental increase in weight of molded parts (140) associated with the casting cycle. Based on the incremental increase in weight of molded parts (140), the measuring device (120) may provide a notification in response to a trigger event. The measuring device (120) may also reset the die casting device (110) for another casting cycle based on the incremental increase in weight of molded parts (140).
    Type: Grant
    Filed: October 30, 2002
    Date of Patent: April 5, 2005
    Assignee: Cast Products, Inc.
    Inventor: Mark Mandel
  • Patent number: 6691209
    Abstract: A method and apparatus for storing data in a mass storage system implementing striped RAID technology by topological categorization and ordering of the data according to the topology of the storage areas. A mass storage system includes a mass storage space for storing data items of a plurality of data types. Each data item contains data of a corresponding data type and each data type is defined by the characteristics of the information represented by the data. The storage space is topologically organized as a plurality of basic units of storage space containing a predetermined number of data blocks of predetermined sizes. A data classifier categorizes each data item as a member of a data type and, for each data type, orders the data of the data items into one or more data block groups in a corresponding write buffer wherein each data block group corresponds to a basic unit of storage, and writes each data item into a corresponding data type area of the storage space.
    Type: Grant
    Filed: May 26, 2000
    Date of Patent: February 10, 2004
    Assignee: EMC Corporation
    Inventor: Mark Andrew O'Connell
  • Publication number: 20030154004
    Abstract: An injection mold apparatus has multiple injection zones, each zone having at least one heater and at least one temperature sensor generating a temperature indicating signal. A power source provides power to the heaters. A controller controls the temperature of at least some of the zones. For efficiency, the controller has two separate processors, a data-receiving processor for receiving temperature indicating signal from each sensor as well as power signals, and a control processor for receiving data from the data-receiving processor and for controlling the amount of power provided to the heaters. Preferably, the control is in a housing, with the housing mounted directly on the mold. Modified PID calculations are utilized. Power calculations for the amount of power to the heaters utilizes a modulo based algorithm.
    Type: Application
    Filed: January 23, 2003
    Publication date: August 14, 2003
    Inventors: Charles R. Kroeger, Rolf T. Anderson, Keith A. Rubow
  • Patent number: 6529796
    Abstract: An injection mold apparatus has multiple injection zones, each zone having at least one heater and at least one temperature sensor generating a temperature indicating signal. A power source provides power to the heaters. A controller controls the temperature of at least some of the zones. For efficiency, the controller has two separate processors, a data-receiving processor for receiving temperature indicating signal from each sensor as well as power signals, and a control processor for receiving data from the data-receiving processor and for controlling the amount of power provided to the heaters. Preferably, the control is in a housing, with the housing mounted directly on the mold. Modified PID calculations are utilized. Power calculations for the amount of power to the heaters utilizes a modulo based algorithm.
    Type: Grant
    Filed: July 21, 1999
    Date of Patent: March 4, 2003
    Assignee: Caco Pacific Corporation
    Inventors: Charles R. Kroeger, Rolf T. Anderson, Keith A. Rubow
  • Publication number: 20010047221
    Abstract: Described and claimed is a method of controlling a boiler in which control is based on information from a control Matrix applicable to the specific operating parameters of said boiler.
    Type: Application
    Filed: December 13, 2000
    Publication date: November 29, 2001
    Inventor: Roger W. Fowee