With Threshold Circuit Device Patents (Class 34/531)
  • Patent number: 10138584
    Abstract: A method for controlling a washing machine is described. The method includes washing laundry by rotating the pulsator in alternating directions with at least a portion of the laundry soaked in wash water in the washing tub. The method further includes draining the wash water from the washing tub; supplying additional wash water into the washing tub. The method further includes increasing a rotation speed of the washing tub with the laundry soaked in the additional wash water. The method further includes sensing a degree of vibration while increasing the rotation speed of the washing tub. The method further includes, based on the sensed degree of vibration being smaller than an allowable degree of vibration, dehydrating the laundry by draining the additional wash water from the washing tub and rotating the washing tub at an increased rotation speed.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: November 27, 2018
    Assignee: LG Electronics Inc.
    Inventors: Kwangchul Heo, Seungwook Jung
  • Patent number: 9543176
    Abstract: Operating methods of purge devices for containers are provided. The operating methods comprise a step of aligning an opening of a container to a first purging unit and placing the container in the purge device. After the container is purged, the container will be heated and filled with extreme clean dry air (XCDA) or nitrogen to finalize the purging process.
    Type: Grant
    Filed: July 16, 2015
    Date of Patent: January 10, 2017
    Assignee: GUDENG PRECISION INDUSTRIAL CO., LTD.
    Inventors: Yung-Chin Pan, Shun-Sheng Chiu
  • Patent number: 9441880
    Abstract: A laundry treating appliance and method for controlling the operation of a laundry treating appliance having a rotatable drum at least partially defining a treating chamber for receiving laundry for treatment in accordance with a treating cycle of operation by determining the presence of a bulky laundry item based on image data of the laundry within the treating chamber.
    Type: Grant
    Filed: July 9, 2013
    Date of Patent: September 13, 2016
    Assignee: Whirlpool Corporation
    Inventors: Farhad Ashrafzadeh, James P. Carow, Shreecharan Kanchanavally
  • Patent number: 8959794
    Abstract: A control system for dryers in which the rotation speed of the motors are changed through frequent on/off connections to the electric power line. In accordance with the invention this task is solved by interrupting the electric power driving the electric motor for short periods in such a way that the motor does not come to a complete standstill or remains at a constant speed below the maximum speed. The motor power interruption or application is based upon readings of sensors reading dryer parameters other than the actual speed of the motor being controlled.
    Type: Grant
    Filed: October 17, 2012
    Date of Patent: February 24, 2015
    Inventor: Roderich W. Graeff
  • Patent number: 8869426
    Abstract: A washing and/or drying appliance includes a heating circuit (140) for heating a washing liquid and/or a drying air flow, connected to voltage distribution lines (105a,105b) distributing power inside the appliance. The heating circuit includes at least one heating resistor (205) in series to switch means (210a,210b) controlled by an appliance control unit (125) for selectively energizing the heating resistor when required. The switch means of the heating circuit includes a first and a second switch (210a,210b) in series to the heating resistor, the heating resistor being interposed between the first and second switches. A monitoring circuit arrangement is provided, which includes a first resistor (R1) in shunt to the heating resistor and having a resistance substantially higher than that of the heating resistor, and a pull-up network connected between a first terminal (215b;215a) of the heating resistor and one of the voltage distribution lines.
    Type: Grant
    Filed: May 12, 2011
    Date of Patent: October 28, 2014
    Assignee: Electrolux Home Products Corporation N.V.
    Inventors: Marco Lorenzi, Paolo Driussi
  • Patent number: 8707580
    Abstract: A dryer having an improved automatic dryness detection circuit is provided. Wet clothing in the dryer bin contacts a sensor and causes a pulse to be sent to a microcontroller if the resistance of the clothes is low enough. The microcontroller disregards pulses which are shorter than a threshold time and counts pulses which are longer than a threshold time. The microcontroller issues a termination signal if the rate of pulses is lower than a threshold rate.
    Type: Grant
    Filed: October 21, 2009
    Date of Patent: April 29, 2014
    Assignee: STMicroelectronics, Inc.
    Inventor: Thomas L. Hopkins
  • Patent number: 8549771
    Abstract: A device and method are provided for detecting a root moisture content of clothing in a clothes dryer. The dryer has two conducting bars situated in the dryer bin. A pulse generator circuit is coupled to the conducting bars. A microcontroller is coupled to an output of the pulse generator circuit. The pulse generator circuit generates a pulse when wet clothing contacts the conducting bars in the dryer bin. The microcontroller receives the pulses and counts the pulses that are longer than a threshold length. The microcontroller issues a termination signal based on the number of counted pulses.
    Type: Grant
    Filed: October 21, 2009
    Date of Patent: October 8, 2013
    Assignee: STMicroelectronics, Inc.
    Inventor: Thomas L. Hopkins
  • Patent number: 8528227
    Abstract: A method of operating a heat pump clothes dryer operating on a mechanical refrigeration cycle is disclosed. The method includes partitioning all energy available in the heat pump clothes dryer into a first amount of energy and a second amount of energy; using the first amount of energy to attain a standard parameter performance for the heat pump clothes dryer; and using the second amount of energy to accelerate a dry cycle of the heat pump clothes dryer, wherein using the second amount of energy to accelerate a dry cycle of the heat pump clothes dryer comprises using the second amount of energy to energize an auxiliary heater during a start transient phase of the dry cycle to decrease the start transient phase.
    Type: Grant
    Filed: March 21, 2011
    Date of Patent: September 10, 2013
    Assignee: General Electric Company
    Inventors: David G. Beers, Brent Alden Junge, Nicholas Okruch, Jr., Amelia Lear Hensley
  • Patent number: 7971371
    Abstract: A clothes dryer has a degree of dryness control system that is responsive to moisture level of clothing articles tumbling in a drum and a target moisture value to control the drying cycle of the clothes dryer. The clothes dryer has a load size parameter producing module and an air flow detection parameter module. These modules generate one of two parameter conditions used by the processor to modify or select an appropriate moisture target value. The load size producing parameter module generates one of a small load input parameter and a large load input parameter. The air flow detection module produces one of a first and second air flow parameter to be utilized by the degree of dryness processor. As a result, the processor selects one of four target moisture values from these conditions.
    Type: Grant
    Filed: October 29, 2007
    Date of Patent: July 5, 2011
    Assignee: Mabe Canada Inc.
    Inventor: Sébastien Beaulac
  • Patent number: 7373208
    Abstract: Each of controllers includes: a transistor; a data processor for executing predetermined data processing and turning the transistor on or off in accordance with the data processing result; a pull-up resistor connected to an output terminal of the transistor; and a level separating resistor connected to the output terminal of the transistor, and the data processor of each controller detects a signal level of a control signal output from the output terminal of the transistor and judges whether or not any defect has occurred in its own controller, based on the detection result.
    Type: Grant
    Filed: August 31, 2005
    Date of Patent: May 13, 2008
    Assignee: Hitachi, Ltd.
    Inventors: Kenichi Ozaki, Taro Takahashi, Xiaoming Jiang
  • Patent number: 7231727
    Abstract: The present invention relates to a moisture removal apparatus and method for accurately detecting moisture generation in an early stage and quickly removing it so as to prevent steam or frost from being formed on glass surfaces of vehicles and industrial devices, and other surfaces. The apparatus comprises a surface resistance detector (50) including two detection terminals attached on an insulation surface with a predetermined gap therebetween, and showing different resistances according to an amount of moisture on the insulation surface; a static electricity preventer (60) preventing static electricity generation to the signal sensed by the surface resistance detector (50); a moisture sensor (70) determining moisture states through variations of the current that flows according to resistances of the surface resistance detector (50), and outputting a corresponding signal; and a driver (80) being operable to the signal output by the moisture sensor (70) and removing moisture generated on the surface.
    Type: Grant
    Filed: April 23, 2002
    Date of Patent: June 19, 2007
    Assignee: ISGK Co., Ltd.
    Inventors: Dong-Chual Kang, Dong-Hyun Kang, Sang-Bock Cho
  • Publication number: 20040261287
    Abstract: A system includes a device for setting a material, such as ink, deposited on a textile or graphic. A programmable logic controller includes a power intensity selector and an application module and is operably connected to the device. The application module is capable of generating a power intensity output signal in response to the power intensity selector. The power intensity output signal is transmitted to the device for a predetermined time period.
    Type: Application
    Filed: June 24, 2003
    Publication date: December 30, 2004
    Inventors: Joel K. Zupancic, Tomasz P. Kocjan
  • Patent number: 6807750
    Abstract: An apparatus and method for controlling the removal of moisture from seed cotton in a cotton gin. The moisture level and rate of seed cotton entering a seed cotton dryer stage of a cotton gin are measured, and, based on those measurements and the desired moisture level of the seed cotton, the seed cotton dryer stage of the cotton gin is controlled to remove a precise amount of moisture from the seed cotton.
    Type: Grant
    Filed: February 5, 2004
    Date of Patent: October 26, 2004
    Assignee: Cotton Moisture, LLC
    Inventors: Gene C. Lewis, Steven E. Lewis, Jerry B. Wright, Jr.
  • Patent number: 6401359
    Abstract: A semiconductor wafer (W) is mounted on top of a mounting stand (3) within a vacuum vessel of a vacuum processing apparatus such as a vacuum film-formation apparatus or an etching apparatus for semiconductor wafers. A heat-transfer gas such as helium is supplied to a gap between the wafer and the mounting stand, and film-formation or etching is performed while the wafer is held at a predetermined temperature. To ensure a simple and reliable detection of any leakage of the helium from between the wafer and the mounting stand during this process because of an abnormal state, the surface of a dielectric material such as aluminum nitride that configures the mounting stand (3) is given a mirror finish and the wafer (W) is attracted to the surface of the mounting stand (3) by an attractive force of at least 1 kg/cm2, whereby the helium from the gas supply path (5) is sealed in on the rear surface side of the wafer (W).
    Type: Grant
    Filed: September 5, 2000
    Date of Patent: June 11, 2002
    Assignee: Tokyo Electron Limited
    Inventor: Hideaki Amano
  • Patent number: 6334267
    Abstract: An apparatus for confirming the initial conditions of a clothes dryer prior to the start of the drying cycle is provided. The clothes dryer comprises a drying chamber with air inlet and outlet ports. A blower powered by a first motor is arranged in the outlet port to draw air into the drying chamber through the inlet port. A burner for heating the air before it enters the drying chamber is arranged in the inlet port. Also arranged at the inlet port is a air proving device for measuring the air flow through the drying chamber. A second motor is provided for the drive system which creates the tumbling action in the drying chamber. The air flow proving device must be enabled before the second motor is started.
    Type: Grant
    Filed: October 19, 2000
    Date of Patent: January 1, 2002
    Assignee: American Dryer Corporation
    Inventor: Dennis Slutsky
  • Patent number: 6079121
    Abstract: A humidity-modulated dual-setpoint temperature controller is disclosed in which the two setpoints of the temperature controller are adjusted as a function of measured humidity. Parameters other than humidity could also be used to adjust the dual setpoints of the temperature controller. The controller is particularly useful in controlling the heater element of a clothes dryer in order to improve the energy efficiency of the dryer.
    Type: Grant
    Filed: August 3, 1998
    Date of Patent: June 27, 2000
    Assignee: Ther-O-Disc, Incorporated
    Inventors: Prasad S. Khadkikar, James A. Tennant, Philip B. Eder, Bernd D. Zimmermann
  • Patent number: 6023854
    Abstract: The invention relates to a spin extractor for extracting liquid from wet laundry by rotating a drum with the laundry contained therein at high speed about a horizontal axis. In an inventive spin extractor, while an operation controller controls the speed of the drum so that the laundry is slightly pressed on the inner peripheral wall of the drum by centrifugal force and rotates with the drum, a position detector detects the position of an eccentric load due to the laundry as a first position. Then, the speed of the drum is raised to a second speed for weak extraction, which is lower than a predetermined maximum speed for extraction, and the position detector detects the position of the eccentric load as a second position. A quality determiner checks the displacement of the second position from the first position to determine the uniformity in extraction quality of the articles, where the extraction quality of an article represents how easily liquid is extracted therefrom.
    Type: Grant
    Filed: July 16, 1998
    Date of Patent: February 15, 2000
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Yoshitaka Tsunomoto, Tomohiko Ikeda, Masafumi Nishino, Kiyonori Tamura
  • Patent number: 5992049
    Abstract: A grain moisture regulating system includes a grain bin with a perforated grain supporting floor and a fan for blowing outside ambient air into the grain bin through the grain mass set thereupon, and through an air outlet at the top of the grain bin. A humidistat fan control system measures ambient moisture in the air outside the grain bin and compares it to ambient moisture in the air inside the grain bin for controlling the fan. A fan operation control system includes a plurality of moisture content sensors which measure ambient moisture in the air outside the grain bin and ambient moisture in the air above the grain mass in the grain bin to produce a signal for the humidistat fan control system.
    Type: Grant
    Filed: March 11, 1996
    Date of Patent: November 30, 1999
    Inventor: Gary L. Trost
  • Patent number: 5761828
    Abstract: The gas flow and ignition of gas in a gas fired clothes dryer is controlled by coupling a soft ferrite material radiatively to an igniter element and non-radiatively to a heat sink. The temperature assumed by the ferrite material is above its curie point when the igniter element is hot enough to ignite the gas and below its curie temperature when the igniter is insufficient to ignite the gas. The change in the permeability of the ferrite material moves a magnet which controls the heating of the igniter element and the flow of gas.
    Type: Grant
    Filed: November 26, 1996
    Date of Patent: June 9, 1998
    Inventor: Eric K. Larson
  • Patent number: 5737852
    Abstract: A dryness control circuit for a household clothes dryer including a power supply circuit and a moisture sensing circuit. The power supply circuit converts high voltage AC power into low voltage, DC power. The low voltage, DC power is supplied to the moisture sensing circuit. The moisture sensing circuit includes a moisture sensor having a pair of spaced-apart electrodes, a time delay circuit, an electrostatic discharge attenuation circuit, and a motor controller circuit. The motor controller circuit includes a control hysteresis or dead-band in which operation of a timer motor is unaffected. The time delay circuit includes an RC network which slowly charges and discharges to prevent erroneous dryness or moisture readings, which are sensed by the moisture sensor, from causing the motor controller circuit to improperly actuate or deactuate the timer motor. The electrostatic discharge attenuation circuit negates the deleterious effects of static build up.
    Type: Grant
    Filed: August 5, 1996
    Date of Patent: April 14, 1998
    Assignee: White Consolidated Industries, Inc.
    Inventors: Sanjay P. Shukla, Sean F. Myers, William B. Hughett
  • Patent number: 5651193
    Abstract: A grain dryer for providing a controlled drying process through a housing. The housing has a path for grain to be dried such that the grain is dried as the grain moves along the path. The grain dryer also has a fan and heater assembly for supplying heated air to the path for drying grain in the path. The grain dryer can control the flow of grain along said path and has sensors disposed in predetermined positions so as to detect different fault conditions. The sensors generating corresponding fault signals in response to the detection of fault conditions. The grain dryer also has a controller operatively connected to the sensors, the controller is responsive to fault signals to initiate a predetermined shutdown procedure upon receipt of any one of the fault signals. A memory is operatively connected to the controller for electronically recording and identifying information concerning shutdown procedures initiated by the controller. The grain dryer controller controls the start-up of in a predetermined manner.
    Type: Grant
    Filed: February 9, 1994
    Date of Patent: July 29, 1997
    Assignee: The GSI Group, Inc.
    Inventors: Virgil O. Rhodes, Timothy P. McDonough, Cloyce Newton, Victor D. Goeckner, Gary Woodruff