With Other Condition Responsive Valve Control Patents (Class 137/51)
  • Patent number: 8398938
    Abstract: A microfluidic thermal bend actuated pressure pulse valve having an inlet for receiving a flow of liquid, an outlet for outputting the flow of liquid, a meniscus anchor between the inlet and the outlet such that the flow from the inlet towards the outlet stops at the meniscus anchor where the liquid forms a meniscus, a movable member for contacting the liquid, and, a thermal expansion actuator for displacing the movable member to generate a pulse in the liquid to dislodge the meniscus such that the liquid flow towards the outlet resumes.
    Type: Grant
    Filed: June 1, 2011
    Date of Patent: March 19, 2013
    Assignee: Geneasys Pty Ltd
    Inventors: Mehdi Azimi, Matthew Taylor Worsman, Kia Silverbrook
  • Patent number: 8271142
    Abstract: Provided is an easy to use valve controller designed to obtain optimum operation performance. The valve controller is designed to control the valve opening of an expansion valve by calculating the valve opening such that a detected temperature coincides with a target temperature. The valve controller includes an automatic for calculating a deviation between the detected temperature and the target temperature and for calculating a changing amount of the valve opening by substituting at least the deviation and a set control parameter into an arithmetic expression to automatically set the control parameter. The valve controller further includes and control level adjuster for adjusting a magnitude of the valve opening calculated with the control parameter set by the automatic tuning means in stages in accordance with a set control level.
    Type: Grant
    Filed: March 12, 2009
    Date of Patent: September 18, 2012
    Assignee: Fujikoki Corporation
    Inventor: Yoshio Ogawa
  • Publication number: 20110315234
    Abstract: An agricultural implement system is provided that includes a valve in fluid communication with first and second actuating cylinders and with first and second fluid conduits. The valve is configured to control fluid flow from the first and second fluid conduits to the first and second actuating cylinders. Furthermore, a controller is communicatively coupled to first and second pressure sensors and to the valve. The first pressure sensor is coupled to the first fluid conduit, and the second pressure sensor is coupled to the second fluid conduit. The controller is configured to determine whether the first fluid conduit or the second fluid conduit is supplying fluid to the valve based on signals from the first and second pressure sensors, and to automatically control fluid flow to the first and second actuating cylinders such that wheel assemblies are rotated to a desired angle relative to an implement frame.
    Type: Application
    Filed: June 29, 2010
    Publication date: December 29, 2011
    Applicant: CNH America LLC
    Inventors: Ricardo Diaz, Leonard A. Bettin
  • Patent number: 7503203
    Abstract: There is provided a rotary valve for fluid analytical systems. The present valve provides improved characteristics such as an extended lifetime. The valve can fulfil different fluid analytical functions and can be a multi-ports and/or multi-positions valve. The valve is provided with extra recesses in the rotor and extra ports in the stator. These recesses allow to cancel the effect of any possible leaks by evacuating them. Such a valve then prevents cross-port leaks and can advantageously be used in highly critical applications. Moreover, the present valve can be used in an analytical system which is advantageously self-diagnostic.
    Type: Grant
    Filed: October 1, 2004
    Date of Patent: March 17, 2009
    Assignee: Mecanique Analytique Inc.
    Inventors: Yves Gamache, André Fortier
  • Patent number: 7432845
    Abstract: To provide an inexpensive hot-water supply system that allows a user to readily select a desired unit for a physical quantity indicated on a display section of a remote controller. A bathroom-installed remote controller 4 is provided with a indication unit switching device that switches the units of hot-water temperature and hot-water amount represented by data transmitted from a water heater and indicated on a display section 20 between Fahrenheit/gallon (shown in FIG. 3(a)) and Celsius/liter (shown in FIG. 3(b)) depending on the presence or absence of long press of an operational switch 32 while the water heater is in a stand-by state.
    Type: Grant
    Filed: April 18, 2006
    Date of Patent: October 7, 2008
    Assignee: Rinnai Corporation
    Inventors: Kumiko Yasutani, Shinji Nagata
  • Patent number: 7418885
    Abstract: A device for driving a plurality of hydraulic shift cylinders, especially shift cylinders for shifting gears of a twin-clutch transmission, includes a first slide valve having a control intake to which control pressure is applied, a system pressure intake to which system pressure is applied, two outlets and at least one return outlet, the one outlet being connected to the system pressure intake and the other outlet being connected to the return outlet, as desired, and a valve device connected to the outlets of the slide valve via which the shift cylinders may be selectively actuated.
    Type: Grant
    Filed: May 10, 2005
    Date of Patent: September 2, 2008
    Assignee: LuK Lamellen und Kupplungsbau Beteiligungs KG
    Inventors: Eric Müller, Manfred Homm
  • Patent number: 7279076
    Abstract: In an apparatus capable of distilling and refining an easily polymerizable substance, piping is performed so that when a strainer in action is switched to a backup strainer, the strainer can be switched after removing air in the backup strainer to replace air in the backup strainer with a discharge liquid of a pump. According to the apparatus, switching the strainers installed on an upstream side of the pump for extracting a liquid of a vacuum distillation column, which distills and refines the easily polymerizable substance, can be performed with no trouble during operation of the distillation column. When the apparatus includes a device for measuring a differential pressure between an upstream side and a downstream side of the strainer in action, two or more strainers installed in parallel can be switched at proper times and the easily polymerizable substance can be produced efficiently.
    Type: Grant
    Filed: March 1, 2006
    Date of Patent: October 9, 2007
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Shuhei Yada, Yasushi Ogawa, Hirochika Hosaka, Yoshiro Suzuki, Mitsuo Nakamura
  • Patent number: 6530390
    Abstract: The invention provides a pressure reducing valve in which a minimum pressure can be secured even when an engine speed is reduced. A pressure reducing valve changing an output pressure in correspondence to an engine speed has means for outputting a predetermined minimum pressure when the engine speed is equal to or less than a first predetermined rotational speed.
    Type: Grant
    Filed: June 18, 2001
    Date of Patent: March 11, 2003
    Assignee: Komatsu Limited
    Inventors: Shinobu Nagura, Shuuji Hori
  • Patent number: 6164926
    Abstract: A variable displacement compressor having a pressurizing passage, which extends through a cylinder block. The pressurizing passage connects a discharge chamber and a crank chamber. A valve is arranged in the pressurizing passage. A drive shaft rotates and produces centrifugal force that causes the valve to open the pressurizing passage. The pressure of the crank chamber is increased when the rotation of the drive shaft is accelerated thereby opening the pressurizing passage with the valve. This moves a swash plate such that its inclination, relative to a plane perpendicular to the drive shaft, decreases. As a result, the compressor shifts from a maximum displacement state to a minimum displacement state, which improves the acceleration performance of an engine connected to the compressor. Furthermore, the displacement of the compressor in the minimum displacement state is 50% of that in the maximum displacement state. This prevents an excessive decrease in the cooling capability of the compressor.
    Type: Grant
    Filed: March 26, 1999
    Date of Patent: December 26, 2000
    Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventor: Masahiro Kawaguchi
  • Patent number: 5819777
    Abstract: A flow control device or valve used in a power steering system of an automotive vehicle. The flow control device comprises a housing formed with an axially extending hole in which a spool valve is movably disposed. A first pressure chamber is defined in the hole, with one end of the spool valve. A drain passage is opened to the first pressure chamber and closable with the spool valve. A second pressure chamber is defined in the hole, with the other end of the spool valve. A restricting orifice is provided to be communicated with the first pressure chamber. An introduction passage is formed to be communicated through the restricting orifice with a discharge passage and opened to the first pressure chamber. The pressure in the discharge passage is introduced to the second pressure chamber. A first spring is disposed in the second pressure chamber to bias the spool valve in a direction to close the drain passage. A spring holding member is movably and coaxially disposed in the axially extending hole.
    Type: Grant
    Filed: July 2, 1996
    Date of Patent: October 13, 1998
    Assignee: Unisia Jecs Corporation
    Inventors: Yukio Uchida, Norihiro Saita
  • Patent number: 4815436
    Abstract: An apparatus for preventing the outflow of a fuel from a fuel tank for vehicle comprises a vent tube device connected to the fuel tank and a canister device connected to the inlet system of an engine to supply the fuel into the tank, an evaporating tube device separated from the vent tube device and connected to the fuel tank and the canister device to supply the evaporated fuel within the tank to the canister device, a shut-off valve disposed in the vent tube device to pass and interrupt the fuel flow through the vent tube device, an opener switch for detecting the opening and closing states of a lid opener opening and closing a filler lid for supplying the fuel into the fuel tank, and a control device for controlling the opening and closing of the shut-off valve by the opener switch to open the shut-off valve only in the open state of the lid opener.
    Type: Grant
    Filed: August 26, 1986
    Date of Patent: March 28, 1989
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Michiaki Sasaki, Haruo Mochida, Tetsuzi Nasu
  • Patent number: 4309269
    Abstract: A process for conveniently transporting particulate coal and crude oil together as a slurry through a pipeline. The coal, having particle size of 20-350 mesh size range, is added to the oil in sufficient amount to form a transportable coal-oil slurry. The slurry is maintained at sufficient velocity and turbulence in the pipeline to prevent solids settling, and also at sufficient pressure, temperature, and time conditions to liquify at least 5 weight percent of the coal. Also, when the sulfur content of the coal used is less than the oil, the sulfur content of the delivered oil portion is reduced during its transit through the pipeline. At its destination, the oil portion can be separated from the slurry and passed to refining operations, while the coal along with some contained heavy oil can be either liquefied to produce hydrocarbon liquid fuel products, or burned as fuel in a power plant.
    Type: Grant
    Filed: May 30, 1979
    Date of Patent: January 5, 1982
    Assignee: Hydrocarbon Research, Inc.
    Inventors: Bernard L. Denker, Peter Maruhnic
  • Patent number: 4250713
    Abstract: An apparatus for providing selective fluid communication between a helium transporter and an electric machine with superconductive exciter windings includes a coupling of the transporter which is mated to an undriven end of the shaft of the electric machine. Passages in the coupling and shaft supply liquid helium to the winding and return warmed liquid helium to the transporter. Quick interchangeability of the transporter is facilitated by a bayonet fitting and a spring biased sealing arrangement between corresponding passages in the coupling and shaft. A pressure actuated valve in the passages is provided to interrupt fluid communication when the pressure of the liquid helium falls below a predetermined value. A centrifugal force actuated valve in the passages is provided to interrupt fluid communication when the shaft speed falls below a predetermined value.
    Type: Grant
    Filed: January 24, 1979
    Date of Patent: February 17, 1981
    Assignee: BBC Brown, Boveri & Company, Limited
    Inventor: Willy Germann
  • Patent number: 4216554
    Abstract: A system to protect piping and containers from damage by freezing of contained aqueous liquid includes a temperature-actuated SPDT switch connected at its movable contact to a rechargable battery. The fixed contacts of the switch are connected to two input terminals of a DC motor of a motor-actuated valve having its valve opened or closed depending upon the operation of the switch. The movable contact normally engages the fixed contact that provides voltage to close the valve, if open, as the sensed temperature is above about 35.degree. F., but moves to the other fixed contact when the temperature drops to 35.degree. F. to open automatically the valve. A relay having a coil energized by AC power has a normally open contact coupling the motor and the fixed contact used to close the valve so that closing is inhibited, if the AC power is off, until power is on.
    Type: Grant
    Filed: February 12, 1979
    Date of Patent: August 12, 1980
    Assignee: Gard, Inc.
    Inventors: Albert J. Glueckert, Robert J. Honegger, Everett E. Nylund, Philip A. Saigh
  • Patent number: 4214437
    Abstract: A governor is adjusted as to speed by having a fluid diaphragm directly connected to a speeder spring which acts against a thrust bearing which bears against the flyweight toes. The fluid diaphragm is resisted by a set of low speed springs at all times. A lost motion arrangement brings a set of normal speed springs into use at larger diaphragm movement so that the response to the speed adjustment varies for different values of pressure acting upon the diaphragm.
    Type: Grant
    Filed: April 10, 1978
    Date of Patent: July 29, 1980
    Inventor: Richard R. Gillespie
  • Patent number: 4164234
    Abstract: An arrangement for metering a blast of air delivered to a driven machine, particularly a sheet separation device of a sheet feeder. A control slide is connected via an air intake opening to a pressure source, and the control slide has an air discharge opening connected to the driven machine and leading into the open. The latter opening is controlled or disconnected during upward movement or stoppage of the machine coupled to the driven machine by means of a control element actuated as a function of the machine speed. The air intake opening and the air discharge opening leading to the driven machine, face each other coaxially, and upon reaching a set final speed, these openings are connectable by means of a coaxial recess passing through the control element. A rotary valve plug with a through-bore is provided to form the control element.
    Type: Grant
    Filed: September 19, 1977
    Date of Patent: August 14, 1979
    Assignee: Georg Spiess GmbH
    Inventor: Rudolf Liepert
  • Patent number: 4038956
    Abstract: This disclosure deals with a variable fluid pressure regulator wherein the level at which the fluid pressure is regulated is adjustable. A member has a flow passage formed therein, and the fluid flows through the passage and out of the member, and a closure is positioned over the opening. The closure is yieldably mounted relative to the member and a spring urges the closure toward the opening. A recess or cavity is formed in the closure, and the fluid flows from the opening, into the recess, and then through a space between the closure and the member. The fluid pressure in the passage is a function of the spring force and the effective area of fluid pressure on the closure, and the effective area comprises the area of the opening plus any area of the recess which lies outside the margin of the opening. The regulated fluid pressure level may be varied by laterally shifting the closure relative to the opening in order to change the effective area.
    Type: Grant
    Filed: September 9, 1974
    Date of Patent: August 2, 1977
    Assignee: Cummins Engine Company, Inc.
    Inventors: Julius P. Perr, Edward D. Smith, Harry L. Wilson