Patents Examined by Kelsey E Cary
  • Servo valve
    Patent number: 11078931
    Abstract: A servo valve comprises a valve housing, a cavity formed in the valve housing and defining a longitudinal axis (X), and a member disposed in the cavity and axially-moveable therein, wherein the member comprises a portion with first and second cylindrical sections having a first diameter (R1, R2), a central section located between the first and second cylindrical sections and having a second diameter (R3), and first and second frusto-conical sections connecting the first and second sections to the central section and forming respective first and second frusto-conical surfaces. A plurality of ports, each form a fluid passage through the valve housing and have first and second nozzles with first and second nozzle openings.
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: August 3, 2021
    Assignee: HAMILTON SUNSTRAND CORPORATION
    Inventor: Marcin Korczyński
  • Valve stem extension
    Patent number: 11079039
    Abstract: Systems and methods for extending a valve stem. The systems include an extender, a securing apparatus, a cover, and a handle. The extender is placed on and around the valve stem and the cover over and around the extender. The handle is secured to an upper surface of the extender by the securing apparatus. The methods include configuring the extension onto a valve stem by removing a securing apparatus and a handle and affixing the extender and cover to a lower surface of a valve. The securing apparatus secures the handle to an upper surface of the extender.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: August 3, 2021
    Inventor: Cameron Karber
  • Rotary stepping actuator for valve
    Patent number: 11073225
    Abstract: Valve system with rotary stepping actuator to actuate a valve stem. An actuator drive shaft supported for stepwise rotation imparts rotation to a valve stem nut to axially move a valve stem to open and close valve flow trim. The drive shaft forms peripheral first and second slotted circular drive paths co-axially spaced from each other. Actuation assemblies releasably engage forward or reverse ratchet pawls in a drive shaft slot to incrementally rotate the drive shaft in forward or reverse steps. One or both of the forward and reverse ratchet pawls is one of a plurality of ratchet pawls, such that each forward or reverse step by one of the plurality of ratchet pawls incrementally rotates the drive shaft through a partial forward or reverse step which is a fraction of a predetermined angular increment set by the slot spacing.
    Type: Grant
    Filed: October 9, 2018
    Date of Patent: July 27, 2021
    Assignee: Master Flo Valve Inc.
    Inventors: Yan Gregory Klyashitsky, Anwar Abdul Sleiman
  • Crank pin configuration for butterfly valve
    Patent number: 11067176
    Abstract: A torque transfer arrangement for a butterfly valve includes a crank having a tubular portion with an outer radial surface and an inner radial surface defining a cylindrical bore about a first axis. The tubular portion has two openings connecting the outer surface with the inner surface. A shaft is sized and configured to fit within the cylindrical bore and aligned with the first axis. A hole formed therethrough is substantially perpendicular to the first axis. A tapered pin is sized and configured to snuggly engage within the two openings and the hole. A butterfly valve and method are also disclosed.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: July 20, 2021
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Robert DeFelice, David J. Zawilinski
  • Valve and method for producing a valve
    Patent number: 11060494
    Abstract: A valve is provided, in particular an injection valve, having a valve seat and a valve needle which extends along a closing direction for the most part, the valve seat having a valve-seat surface, and a valve-closing element is mounted on an end of the valve needle facing the valve seat, the valve-closing element being able to be moved between an open position and a closed position, and the valve-closing element together with the valve-seat surface forming a sealing seat in the closed position, the valve-closing element having a greater core hardness and/or surface hardness than the valve-seat surface.
    Type: Grant
    Filed: August 5, 2019
    Date of Patent: July 13, 2021
    Assignee: Robert Bosch GmbH
    Inventor: Fatima Mutlu
  • Spool servo valve
    Patent number: 11060536
    Abstract: A servo valve includes a valve housing, a cavity formed in the valve housing defining an axis (X) and an axially moveable member disposed in the cavity. The member comprises flat surfaces parallel to the axis (X). A channel is formed within the cavity and a plurality of ports each forming a fluid passage through the valve housing in fluid communication with a spool and with the channel. The plurality of ports include first and second nozzles with nozzle openings, wherein in a first axial position of the member the first nozzle opening is at least substantially obstructed by the first flat surface, and in a second axial position of the member the second nozzle opening is at least substantially obstructed by the second surface, the member controlling fluid between the spool and the channel.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: July 13, 2021
    Assignee: HAMILTON SUNSTRAND CORPORATION
    Inventors: Maciej Bujewicz, Marcin Korczynski
  • Gas appliance, gas valve and control method thereof
    Patent number: 11060724
    Abstract: A gas appliance includes a burner, a gas valve, and a control device, wherein the gas valve includes a valve body, a flow regulator, a hot film anemometer, and a stepper motor. The valve body communicates with the burner and a gas source. The flow regulator is driven by the stepper motor to change a gas flow rate supplying to the burner. The hot film anemometer is disposed in the valve body and includes a probe exposed to the outlet passage. The control device executes a control method for the gas valve: sensing the gas flow rate in the outlet passage with the hot film anemometer; comparing the gas flow rate sensed by the hot film anemometer with a predetermined gas flow rate, and controlling the stepper motor to drive the flow regulator based on the comparison result, whereby to stabilize the gas flow rate.
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: July 13, 2021
    Assignee: GRAND MATE CO., LTD.
    Inventors: Chung-Chin Huang, Chin-Ying Huang, Hsin-Ming Huang, Hsing-Hsiung Huang, Yen-Jen Yeh
  • Regulating valve for a gas cooking appliance and gas cooking appliance incorportating said regulating valve
    Patent number: 11054047
    Abstract: Regulating valve for a gas cooking appliance, comprising a valve body with an inlet conduit and at least one outlet conduit, and a rotating disc arranged between the inlet conduit and the outlet conduit, comprising a plurality of connecting holes for regulating the gas flow, more than one connecting hole overlapping with an outlet hole of the outlet conduit, and the rotating disc comprising a main series of connecting holes increasing in size in the direction of increasing gas flow. There is an intercalated hole between successive holes of the main series and after each hole of the main series, the size of each intercalated hole being smaller than the size of the preceding contiguous hole of the main series.
    Type: Grant
    Filed: July 19, 2018
    Date of Patent: July 6, 2021
    Assignee: COPRECI, S. COOP.
    Inventor: Felix Querejeta Andueza
  • Diaphragm valve and flow rate control device for semiconductor manufacturing apparatus
    Patent number: 11047490
    Abstract: A diaphragm valve and a flow rate control device for a semiconductor manufacturing apparatus are configured so as to allow an increase of a valve flow rate while avoiding an increase in size of the valve. The diaphragm valve includes a diaphragm with an outer periphery being pressed and a valve seat part in a valve chamber of a body having an inflow path and an outflow path, with the diaphragm being configured to open and close the valve chamber by an ascending/descending motion of a stem. The diaphragm has a substantially-flat cross sectional form having a substantially-planar center region and a boundary region. The boundary region is on an outer peripheral side of the center region and has a radius of curvature smaller than that of the center region, and the boundary region is positioned near an outer peripheral side of the valve seat part.
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: June 29, 2021
    Assignee: KITZ SCT CORPORATION
    Inventor: Chokuto Kou
  • Systems and methods for a plug valve
    Patent number: 11022228
    Abstract: A valve seat is provided herein. The valve seat may include a ceramic valve seat insert positioned within a metal valve seat housing and comprising an indentation corresponding to a retention lip of the metal valve seat housing and a compliant sleeve positioned coaxially around at least a portion of an outer surface of the ceramic valve seat insert.
    Type: Grant
    Filed: September 12, 2018
    Date of Patent: June 1, 2021
    Assignee: Caldera Engineering, LC
    Inventors: Ryan Weber, Jeffrey Robison, Brad Allan
  • Automatically resettable press-type switching valve and bathtub faucet
    Patent number: 11022234
    Abstract: An automatically resettable press-type switching valve includes a valve housing, an operating portion, a driven rod, a water blocking member, and a resetting member. The valve housing is formed therein with an inlet and outlet passages. A water blocking seat is provided between the inlet and outlet passages. The operating portion drives the driven rod to move axially so as to form a forward pressure difference or reverse pressure difference between two opposing sides of the water blocking member, by which the water blocking member is pushed to move axially with the driven rod. The resetting member is drivingly connected with the water blocking member, when there is no water pressure at a side of the inlet passage, the resetting member drives the water blocking member to separate from the water blocking seat, and the inlet passage is communicated with the outlet passage.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: June 1, 2021
    Assignee: XIAMEN SOLEX HIGH-TECH INDUSTRIES CO., LTD.
    Inventors: Zhijian Wei, Lihong Hu, Fangqi Lin, Tangjun Dan
  • Automatic back-pressure valve for use in supercritical fluid chromatographic system
    Patent number: 11015717
    Abstract: An automatic back-pressure valve comprises a spring support (1), an ejector rod spring (2), an ejector rod (3), a piston rod (4), a guide band (5), a cylinder body (6), an O-ring seal ring A (7), an O-ring seal ring B (8), a piston rod spring (9), a cylinder cover (10), a guide sleeve (11), a conical ceramic element (12), a seal ring (13), a sealing base (14), a valve body (15), a screw (16) and a positioning sleeve (17).
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: May 25, 2021
    Assignee: JIANGSU HANBON SCIENCE & TECHNOLOGY CO., LTD.
    Inventors: Jie Liu, Yan Zhang, Zhong Yan, Zhiling Li
  • Valve
    Patent number: 11009051
    Abstract: A valve includes a valve housing (2) for transport of a heatable fluid such as hydraulic oil. The valve housing has at least one utility connection (A, B), at least one pressure supply connection (P), and at least one return connection (T1, T2). A control slide (6) is guided in the valve housing (2) in a longitudinally displaceable manner. In at least one position of the control slide (6), the pressure supply connection (P) is at least partially separated from the utility connection (A, B), and the heatable fluid arrives, proceeding from this pressure supply connection (P) and via a heat-emitting connection in the control slide (6), at the at least one return connection (TI, T2) as a loss volume flow. The loss volume flow serves as a heat source and heats at least regions of the control slide (6).
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: May 18, 2021
    Assignee: HYDAC SYSTEMS & SERVICES GMBH
    Inventors: Sascha Alexander Biwersi, Christoph Stoenner, Michael Timothy Teiga
  • Diaphragm valve
    Patent number: 11002372
    Abstract: A diaphragm valve includes a valve seat disposed in a valve chamber in a body, an annular groove provided on the outer periphery of the valve seat, a diaphragm provided so as to be able to make contact with and leave the valve seat via a pressurizing device, and a primary-side flow path communicating the valve chamber, in which an inner diameter of a secondary-side flow path contiguously provided to the annular groove is 2.0 to 4.5 times a groove width of the annular groove, and an intersection cross-sectional area between the annular groove and the secondary-side flow path is smaller than a cross-sectional area of the secondary-side flow path and the intersection cross-sectional area is configured to be equal to or larger than 35% with respect to a sectional area of the secondary-side flow path to acquire a predetermined Cv value.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: May 11, 2021
    Assignee: KITZ SCT CORPORATION
    Inventor: Chokuto Kou
  • Valve device
    Patent number: 10989312
    Abstract: Valve device based on a closing disc formed by disc parts which are movably arranged on activation bolts extending between two stop discs, and where movement of the activation bolts or disc parts in longitudinal direction of the valve device results in that the relative position between the disc parts are changed and the valve device opens or closes.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: April 27, 2021
    Inventor: Bernt Erik Röst
  • Manually controlled high pressure valve and a glass chiller using thereof
    Patent number: 10989311
    Abstract: A manually controlled high pressure valve includes a valve body having an air inlet, an air outlet and a mounting hole; an adjusting device arranged in the mounting hole by hermetically connecting to the inside wall of the mounting hole and having an air inlet hole and an air outlet hole; a limiting block arranged below the adjusting device and matched with the adjusting device and the air inlet for controlling the air intake from the air inlet hole of the adjusting device. The limiting block can be jacked up by the high pressure of the air inlet and block off the air inlet to stop jetting outwardly when the gas is not exhausted from the air outlet of the valve; and the limiting block can be removed to form a gap between the limiting block and the inlet hole when it is required to jet outwardly.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: April 27, 2021
    Inventors: Deben Tan, Shaolin Wang
  • Fluid valve assembly, process valve positioner and use of a fluid valve assembly in control of a process valve
    Patent number: 10968924
    Abstract: A fluid valve assembly having a central bore and a stem axially-movable within the central bore and actuated by an axial pilot force and an axial counter force. An inner supply pressure chamber is provided to retain a stabilized supply pressure providing the axial counter force affecting on the stem. A seal member is arranged coaxially with the stem between the inner supply pressure chamber and an outer supply pressure chamber which is connected to a supply pressure input line. A metering edge is arranged coaxially with the stem to control fluid flow from the outer supply pressure chamber to an actuator chamber. Means are provided to stabilize the supply pressure in the inner chamber against sudden pressure drops in the outer supply pressure chamber.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: April 6, 2021
    Assignee: NELES FINLAND OY
    Inventors: Jan Gunell, Mika Olkkonen, Juuso Jokinen, Joni Kukkonen, Jyri Hakola
  • Proportional flow control and counterbalance valve having single seat configuration
    Patent number: 10969801
    Abstract: An example valve includes: a first port configured to be fluidly coupled to an actuator; a second port configured to be fluidly coupled to a reservoir; a third port configured to provide an output pilot fluid signal and receive an input pilot fluid signal; a fourth port configured to be fluidly coupled to a source of fluid; a pilot poppet configured to be subjected to a first fluid force of fluid received at the first port and configured to be subjected to a second fluid force of the input pilot fluid signal; a solenoid actuator sleeve that is axially movable between an unactuated state and an actuated state; and at least one setting spring configured to apply a biasing force on the pilot poppet.
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: April 6, 2021
    Assignee: Sun Hydraulics, LLC
    Inventor: Bernd Zähe
  • Proportional flow control valve with counterbalance valve integrated therewith
    Patent number: 10969800
    Abstract: An example valve includes: a first port configured to be fluidly coupled to an actuator; a second port configured to be fluidly coupled to a reservoir; a third port configured to provide an output pilot fluid signal and receive an input pilot fluid signal; a fourth port configured to be fluidly coupled to a source of fluid; a pilot poppet configured to be subjected to a first fluid force of fluid received at the first port; a pilot piston interfacing with the pilot poppet and configured to be subjected to a second fluid force of the input pilot fluid signal; a solenoid actuator sleeve that is axially movable between an unactuated state and an actuated state; and at least one setting spring configured to apply a biasing force on the pilot piston and the pilot poppet.
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: April 6, 2021
    Assignee: Sun Hydraulics, LLC
    Inventor: Bernd Zähe
  • Booster assembly for gate valves
    Patent number: 10969018
    Abstract: A booster assembly includes a booster body configured to removably couple to an actuator body of an actuator of a gate valve, a booster stem configured to removably couple to an actuator stem of the actuator, and a booster biasing member configured to provide a supplemental force to supplement an actuating force applied by the actuator to drive a gate of the gate valve from an open position to a closed position.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: April 6, 2021
    Assignee: Cameron International Corporation
    Inventors: Delbert Edwin Vanderford, Stuart Robinson, Joseph A Hedges