Leakage Patents (Class 73/40)
  • Patent number: 11508932
    Abstract: The present disclosure relates to a package structure, a display panel, a display device, and a method for detecting a package structure. The package structure includes a first package layer and a second package layer disposed opposite to each other, and a sealing element between the first package layer and the second package layer for forming a sealed space between the first package layer and the second package layer. The package structure further includes a detecting element located in the sealed space, the detecting element including an oxygen sensitive material, the oxygen sensitive material including a material whose light emission characteristics are changed after exposure to oxygen.
    Type: Grant
    Filed: February 14, 2018
    Date of Patent: November 22, 2022
    Assignees: BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD., HEFEI BOE DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Dong Xu, Yajun Li, Kai Wang, Feng Yu
  • Patent number: 11499906
    Abstract: A coupling device for a mask test means is disclosed. Provided according to an embodiment of the present invention is a coupling device for a mask test means, comprising: a pressing member which can receive a first member of a mask test means on one side thereof and can move up and down; and a support member which can receive a second member of the mask test means on one side thereof and is disposed below the pressing member, wherein the support member includes a lower member having a perforation means for forming a perforation in a mask, and the pressing member includes an upper member into which at least a portion of the perforation means can be inserted.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: November 15, 2022
    Assignee: APM ENGINEERING CO., LTD.
    Inventor: Gwan Hoon Yoon
  • Patent number: 11493400
    Abstract: The disclosed embodiments include systems and methods for recording a pressure profile using a sensor connected to a flowline, generating a pressure pulse in the flowline by closing a valve connected to the flowline, calculating a first derivative and a second derivative of the pressure profile, and determining a parameter of the pressure pulse based on the first derivative and the second derivative of the pressure profile.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: November 8, 2022
    Assignee: Halliburton Energy Services, Inc.
    Inventors: David B. Bennett, Antonio K. Acquaah, Manish Vishwanath
  • Patent number: 11473997
    Abstract: Embodiments of systems and methods for supplying fuel, enabling communications, and conveying electric power associated with operation of a hydraulic fracturing unit of a plurality of hydraulic fracturing units are disclosed and may include a fuel line connection assembly configured to be connected to the first hydraulic fracturing unit and to supply fuel from a fuel source to a gas turbine engine connected to the hydraulic fracturing unit. A system also may include a communications cable assembly configured to be connected to the hydraulic fracturing unit and to enable data communications between the hydraulic fracturing unit and a data center or another hydraulic fracturing unit. A system further may include a power cable assembly configured to be connected to the hydraulic fracturing unit and to convey electric power between the hydraulic fracturing unit and a remote electrical power source or the plurality of hydraulic fracturing units.
    Type: Grant
    Filed: April 11, 2022
    Date of Patent: October 18, 2022
    Assignee: BJ Energy Solutions, LLC
    Inventors: Tony Yeung, Ricardo Rodriguez-Ramon, Patrick Thomson
  • Patent number: 11473990
    Abstract: In an embodiment a membrane includes a hydrophobic region having a plurality of hierarchically arranged micrometer-sized and submicrometer-sized units consisting of a membrane material, wherein a single micrometer-sized unit has a diameter of from 1 ?m to 5 ?m and a single submicrometer-sized unit has a diameter of <1 ?m, and wherein the membrane is configured to be used in a pressure sensor system.
    Type: Grant
    Filed: September 16, 2019
    Date of Patent: October 18, 2022
    Assignee: TDK ELECTRONICS AG
    Inventors: Markus Eberstein, Peter Sättler, Christian Wohlgemuth
  • Patent number: 11467055
    Abstract: Leak detection device having a dome with a main body and a seal configured to define a detection chamber between the main body and the test zone, the seal including a peripheral sealing lip configured to come into contact with the sealing membrane and having a closed contour encircling the detection chamber, an analysis tool connected to the detection chamber to analyze a gas present in the detection chamber in which the sealing lip is configured to have at least in a service state in which a reduced pressure is applied in the detection chamber, a pinch portion that is pinched between the main body and the sealing membrane.
    Type: Grant
    Filed: May 21, 2019
    Date of Patent: October 11, 2022
    Assignee: GAZTRANSPORT ET TECHNIGAZ
    Inventors: Gael Tos, Sebastien Larroque, Carlos Da Cunha, David Hassler, Olivier Perrot, Anthony De Faria, Vincent Fraysse, Charles Gimbert, Bruno Deletre
  • Patent number: 11466707
    Abstract: A fluid leakage detection system has a detection space to which working oil leaked out through a rod seal is guided; the rod seal being configured to seal an annular gap between a piston rod and a cylinder head; a sensor unit configured to detect pressure in the detection space; and a controller configured to acquire detected result from the sensor unit, wherein the controller has: a calculation unit configured to calculate a pressure parameter representing a pressure fluctuation in the detection space; a determination unit configured to determine occurrence of leakage of the working oil based on the pressure parameter; and the pressure parameter includes an upper limit value and a lower limit value of the pressure fluctuation obtained from the detected result detected by the sensor unit within a predetermined detection period.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: October 11, 2022
    Assignee: KYB CORPORATION
    Inventors: Yusuke Takahashi, Takahiro Iwamoto, Keitaro Yoshida, Takayoshi Kikuchi
  • Patent number: 11457517
    Abstract: A lighting system including a lighting device configured to be connected to an object. The lighting device includes a body, at least one visible light source connected to the body, and at least one ultraviolet light source connected to the body. The at least one ultraviolet light source is operably coupled to the at least one visible light source. The lighting device is configured for strobing the visible light and ultraviolet light sources by turning the at least one ultraviolet light source on upon the at least one visible light source turning off and turning the at least one ultraviolet light source off upon the at least one visible light source turning on such that a reflectance material of an object, which is not being illuminated by the at least one visible light source, is illuminated by the at least one ultraviolet light source.
    Type: Grant
    Filed: October 21, 2020
    Date of Patent: September 27, 2022
    Inventors: Joel A. Nichols, Dominic Picciuto
  • Patent number: 11346308
    Abstract: Methods and systems are provided for diagnosing degradation in a variable volume device included within a pressure-less fuel tank. In one example, a method may include, upon conditions being met, operating a pump of an evaporative emissions control (EVAP) system leak detection module (ELCM) to evacuate the variable volume device. A degradation of the variable volume device may be indicated based on a change in pressure at the variable volume device.
    Type: Grant
    Filed: July 9, 2021
    Date of Patent: May 31, 2022
    Assignee: Ford Global Technologies, LLC
    Inventor: Aed M Dudar
  • Patent number: 11326977
    Abstract: The present disclosure belongs to the field of municipal engineering and urban water supply network, and provides an efficient method for localizing leaks in a districted metering area (DMA) of water supply pipe networks based on valve operations and online water metering, which is implemented in multiple stages to gradually reduce the leaking area. At each stage, the DMA is firstly decomposed into two sub-areas using an optimized valve operation strategy determined by a minimized objective function, wherein a graph theory-based method is used for the solution. Then the sub-areas containing leaks are identified through online water balance analysis based on smart demand meters, thereby reducing the leaking area. The minimum leaking area is identified with the least number of valve operations. Compared with the traditional methods, the method of the present disclosure can obviously improve the efficiency and accuracy of leak localization and is easy to implement.
    Type: Grant
    Filed: August 31, 2020
    Date of Patent: May 10, 2022
    Assignee: ZHEJIANG UNIVERSITY
    Inventors: Feifei Zheng, Yuan Huang, Qingzhou Zhang
  • Patent number: 11313390
    Abstract: A hydraulic drive system includes: a first hydraulic pump of the variable capacitance type; a first regulator including a first proportional valve; a second hydraulic pump that dispenses operating oil; a switch valve; a control device; and a malfunction detection device. The switch valve can switch to a third valve position in which the switch valve allows the operating oil dispensed from both the first hydraulic pump and the second hydraulic pump to be supplied to first and second traveling hydraulic motors and first and second hydraulic actuators. The control device controls the operation of the first proportional valve by outputting a first flow rate command signal to the first proportional valve, and when the malfunction detection device detects a malfunction of an electrical system related to the first proportional valve, the control device switches the switch valve to the third valve position.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: April 26, 2022
    Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Akihiro Kondo, Naoki Hata, Nobuyuki Kinoshita
  • Patent number: 11311174
    Abstract: An imaging scope includes an internal surface defining an internal cavity, a window permitting visual inspection of the internal cavity, a fluid in the internal cavity having a pressure different than ambient pressure, and a leak indicator transitionable between nonvisible and visible through the window when the pressure of the fluid changes toward ambient pressure.
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: April 26, 2022
    Assignee: Karl Storz Endovision, Inc.
    Inventor: Vernon Hopkins
  • Patent number: 11300472
    Abstract: The invention relates to an installation (1) for detecting and locating a leak in at least one fluid transport circuit (Ps, Pt), notably an anemometer circuit of an aircraft, having a leak test apparatus (10) including means (12) for detecting a leak in the said at least one fluid transport circuit (Ps, Pt). In one example, the means for locating a leak includes injecting means (Pp, 14, Ev2) of a trace gas under pressure into the said at least one fluid transport circuit (Ps, Pt), which means are situated in the said leak test apparatus (10), and a trace-gas detection probe (30) intended to be moved along the said at least one fluid transport circuit (Ps, Pt) on the outside thereof, in order to locate the leak.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: April 12, 2022
    Assignee: ATEQ
    Inventors: Frederic Platel, Gabriel Nativel
  • Patent number: 11268877
    Abstract: A plate fin fluid processing device includes active layers, where each active layer includes a fin plate sandwiched between parting sheets so that an active fluid space is defined between the parting sheets. The active layers include an outermost active layer having an inlet and an outlet. A contingent layer body is positioned adjacent to the outermost active layer and includes a fin plate positioned between a parting sheet and a cap sheet. The contingent layer body has a fluid space that is sealed with respect to the atmosphere. A pressure monitoring system is in communication with the fluid space of the contingent layer body. An emergency pressure relief device is configured to release a pressure within the fluid space if a preset pressure is exceeded.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: March 8, 2022
    Assignee: Chart Energy & Chemicals, Inc.
    Inventors: Adam McNeilly, Steven J. Vallee, Kyle Adams, Emma Carter, Zeke Skarlupka, Joseph Vanevenhoven, Robert Robson
  • Patent number: 11187193
    Abstract: An active dual purge system includes: an intake pipe, a compressor to compress air, a canister to collect an evaporation gas, a purge line extending from the canister to a front end of the compressor, a branch line branching off from the purge line and extending to a rear end of a throttle valve body, a purge pump installed in the purge line, a purge valve installed in the purge line, a vent valve installed in a vent line extending from the canister toward the atmosphere, a first sensor installed in the purge line, and a second sensor installed in the purge line, and a controller to perform different tests on the purge pump, the purge valve and the vent valve in different operating states, and diagnose whether at least one of the purge line, the branch line, or the vent line are abnormal using on-board diagnosis (OBD).
    Type: Grant
    Filed: December 8, 2020
    Date of Patent: November 30, 2021
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Young-Kyu Oh, Keum-Jin Park
  • Patent number: 11149582
    Abstract: Methods and Systems for health-monitoring of a multi-channel pressure transducer of a gas turbine engine are described. The method comprises monitoring a deviation between a first channel and a second channel of a multi-channel pressure transducer over time, determining a rate of change of the deviation, extrapolating a trend over time based on the rate of change of the deviation to predict when the deviation will reach a threshold, and triggering a maintenance action for the pressure transducer based on the trend.
    Type: Grant
    Filed: October 16, 2019
    Date of Patent: October 19, 2021
    Assignee: PRATT & WHITNEY CANADA CORP.
    Inventor: Antwan Shenouda
  • Patent number: 11125643
    Abstract: There is provided a sealing detection method for a sealing structure, comprising the following steps: S1, attaching a thin film on a gasket to seal an opening; S2, disposing a sealing ring directly below the base to seal a lower opening of the mounting through hole; S3, providing a vent hole on sealing ring through which the sealing ring communicates with a gas source with a gas pressure sensor; S4, starting to supply or pump gas to form a positive pressure or a negative pressure region between the sealing ring and the base; S5, maintaining the air pressure state for a certain time, during which the gas pressure sensor performs real-time detection of gas flow; S6, comparing detected gas flow with qualified threshold range; S7, sorting products with the sealing structure according to detection results; S8, peeling off the thin film and completing the detection.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: September 21, 2021
    Assignee: SUZHOU RS TECHNOLOGY CO., LTD.
    Inventors: Jiafu Wu, Lei Miao
  • Patent number: 11079128
    Abstract: A system to characterize gas in a building includes a processor; a gas sensor coupled to the processor; a gas valve coupled to the processor; an encryption module executed by the processor to secure gas data; and a transceiver to communicate secured gas data over a network to a remote processor.
    Type: Grant
    Filed: May 31, 2019
    Date of Patent: August 3, 2021
    Assignee: Blockchain Generation Ventures
    Inventors: Bao Tran, Dave Nyhof
  • Patent number: 11065652
    Abstract: An endoscope cleaning station for cleaning an endoscope includes a sink having an inlet connected to a water supply for filling the sink and a drain for draining the sink, a fill solenoid for controlling a flow of water to the inlet of the sink, a detergent pump and detergent valve that cooperate to selectively dispense detergent into another flow of water thus creating a detergent solution, a manifold for injecting the detergent solution into the endoscope, a lumen solenoid for controlling the flow of the detergent solution to the manifold, a pressure regulator disposed downstream of the lumen solenoid and upstream of the manifold to reduce a pressure of the detergent solution delivered to the manifold, and a high-pressure port connected to a narrow channel of the endoscope, the high-pressure port receiving the detergent solution that bypasses the pressure regulator so that the detergent solution exiting the high-pressure port into the narrow channel has a higher pressure than the pressure of the detergent s
    Type: Grant
    Filed: April 24, 2018
    Date of Patent: July 20, 2021
    Assignee: 9485562 Canada Inc.
    Inventors: Scott Connelly, Robert Swayne, Mark Howes
  • Patent number: 11067468
    Abstract: Systems and methods for leak detection of aircraft doors. One embodiment is an apparatus for leak testing a seal between an aircraft door and a fuselage of an aircraft. The apparatus includes a structural frame that includes a suction cup configured to suction an outer surface of the aircraft door. The structural frame further includes legs to extend in length to push the structural frame away from the fuselage and cause the suction cup to pull the aircraft door toward an outside of the aircraft to tighten the seal between the aircraft door and the fuselage of the aircraft.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: July 20, 2021
    Assignee: The Boeing Company
    Inventors: Tyler Emerson Berkey, Emnet T. Gemechu
  • Patent number: 11054333
    Abstract: A portable oil leak detection system having an oil sensor mountable to an engine and configured to detect the presence of oil and a processor positioned within a portable housing. The processor is configured to receive a signal indicative of the oil sensor detecting oil, record a timestamp in response to receiving the signal indicative of the oil sensor detecting oil, and activate an alert indicating that the oil sensor has detected oil.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: July 6, 2021
    Assignee: Caterpillar Inc.
    Inventors: Samuel James Boston, Samuel Jaroslav Stafl
  • Patent number: 11052268
    Abstract: A respiratory mask body defining a breathable air zone for a wearer and having a shut-off valve is provided. In an exemplary embodiment, the mask body includes one or more inlet ports configured to receive one or more breathing air source components. The shut-off valve is operable between a closed position and an open position, and when in a closed position the shut-off valve prevents fluid communication between the one or more inlet ports and the breathable air zone and the shut-off valve returns to an open position in the absence of an applied force.
    Type: Grant
    Filed: May 22, 2014
    Date of Patent: July 6, 2021
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: William A. Mittelstadt, Carl W. Raines, III, David R. Stein, Nathan A. Abel, David M. Blomberg, Michael J. Cowell, Gary E. Dwyer, Thomas I. Insley, Michael J. Svendsen, Dylan T. Cosgrove, Kent E. Lageson, Chaodi Li
  • Patent number: 11047345
    Abstract: An evaporated fuel processing device includes: a canister configured to adsorb fuel evaporated from a fuel tank; a vapor pipe connecting the fuel tank to the canister; a sealing valve provided in the vapor pipe to be driven by an actuator to quantitatively control an opening degree; and a controller. The controller includes: a restoration detector configured to detect that the supply of power from a battery to the controller is restored after the supply of power from the battery to the controller is cut off; and a restoration actuator configured to drive the actuator so that the sealing valve is fully closed or fully opened when the restoration detector detects that the supply of power is restored.
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: June 29, 2021
    Assignee: HAMANAKODENSO CO., LTD.
    Inventor: Yuuichirou Miura
  • Patent number: 10989622
    Abstract: A flexible leak testing machine for tightness testing of a cylinder head, an engine block or similar workpiece has at least one sealing plate, a machine frame with at least one workpiece holding device for the workpiece and an adjusting device with a first drive for bringing together the workpiece and the sealing plate into a test position. The leak testing machine is flexibly usable in that it includes a changeover device for sealing plates. The changeover device has an adjustable holding arrangement on the machine frame, with sealing plate holders and an associated drive for sealing plate changeover.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: April 27, 2021
    Assignee: ELWEMA AUTOMOTIVE GMBH
    Inventors: Antonio Alvarez, Eberhard Ilg
  • Patent number: 10969294
    Abstract: Methods and systems are provided for expediting the generation of positive pressure and vacuum during corresponding phases of a fuel system leak test. Adjustments to the settings of active grille shutters and air dams enables heat to be trapped in the vehicle for the pressure phase and a cooling air flow to be provided during a vacuum phase. The adjustments enable the response time and completion frequency of an EONV test to be improved.
    Type: Grant
    Filed: January 23, 2019
    Date of Patent: April 6, 2021
    Assignee: Ford Global Technologies, LLC
    Inventor: Aed M. Dudar
  • Patent number: 10962465
    Abstract: Devices to determine the filtration behavior of a device for filtering gaseous fluid. These devices are characterized by unchanged reproducibility during further tests. To this end, the device comprises a first device for setting a particular differential pressure, a second device having a certain degree of filtration efficiency of the gaseous fluid, which flows through the devices, of the filter test system such that a differential pressure and/or filtration efficiency are adjustable in a variable fashion and independently of one another, and the first device (2) and the second device (3) are normal for filtration, with permanently constant characteristics with regard to the differential pressure that is set and the filtration efficiency that is set as a reference device for simulation of a filtering separator, a first adapter for coupling on the inflow side, and a second adapter for coupling on the outflow side.
    Type: Grant
    Filed: January 29, 2019
    Date of Patent: March 30, 2021
    Assignee: Topas GmbH
    Inventors: Rene Adam, Andreas Rudolph, Franziska Mayer, Stephan List
  • Patent number: 10928270
    Abstract: There is provided a method and an apparatus analysing the condition of a liquid conduit system. Data is received from at least one sensor indicative of pressure within the system and then processed to generate an inflexion coded data subset for each sensor. The inflexion coded data is then cycle counted across at least one time period to generate a second data subset for each time period comprising a count of pressure cycles, the amplitude of these pressure cycles and an average pressure. A cumulative pressure-induced stress can then be calculated for each of the at least one time periods using the second data subset.
    Type: Grant
    Filed: October 10, 2016
    Date of Patent: February 23, 2021
    Assignee: IP2IPO INNOVATIONS LIMITED
    Inventors: Asher John Hoskins, Ivan Iordanov Stoianov
  • Patent number: 10919512
    Abstract: A method is described for detecting a leakage during the operation of a braking system. A braking intention signal characterizing a braking intention is generated by actuating a final control system of an actuating circuit; a setpoint braking pressure required in an active circuit is ascertained based on the braking intention signal; an actual braking pressure in the active circuit is set according to the setpoint braking pressure with the aid of a pressure generation unit by moving a displacement piston to actuate a wheel brake coupled to the active circuit; and a pressure modulation is carried out. The pressure modulation includes setting the actual braking pressure in the active circuit to a value greater than the setpoint braking pressure, and lowering the actual braking pressure until the setpoint braking pressure is reached by moving the displacement piston at a predetermined piston speed.
    Type: Grant
    Filed: August 5, 2019
    Date of Patent: February 16, 2021
    Assignee: Robert Bosch GmbH
    Inventors: Bertram Foitzik, Timo Haible
  • Patent number: 10876858
    Abstract: A device for use in a leak check test of an air data system includes a device body, an opening extending into the device body with the opening being configured to allow a probe to be at least partially inserted into the opening, and walls surrounding the opening with the walls being situated to seal a port in the probe such that air is prevented from flowing into or out of the port while the probe is inserted into the opening. A method of performing a leak check test includes covering the port with the device to seal the port, heating air within a gas path in the air data system, measuring the change in pressure of the air resulting from an increase in temperature of the air, and determining whether the air data system is sealed depending on the change in pressure of the air.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: December 29, 2020
    Assignee: Rosemount Aerospace Inc.
    Inventors: Brian Brent Naslund, Benjamin John Langemo, Matthew Paul Anderson, Andrew Sherman
  • Patent number: 10866154
    Abstract: A trunnion bolt monitoring system for an air preheater trunnion has a plurality of trunnion bolts through which extends a respective blind bore each in gas tight connection at its open end to a pressurized manifold comprising piping and T-fittings. Depressurisation of the manifold indicative of fatigue cracking of any one bolt is detected by electrical monitoring of three pressure sensors.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: December 15, 2020
    Assignee: ARVOS LJUNGSTROM LLC
    Inventors: David W. Bintz, Travis N. Tozer
  • Patent number: 10845266
    Abstract: A method for leak detection of a test specimen includes providing an evacuable film test chamber which is operatively coupled to a pressure measuring device, and at least one processor operatively coupled to the pressure measuring device; measuring a pressure within the evacuable film test chamber by the pressure measuring device at predetermined times during a measurement period of time; calculating by the processor, a first or higher order derivative of a pressure change with respect to time at a first predetermined time, and a first or higher order derivative of a pressure change with respect to time at least at a second predetermined time during the measurement period of time, to provide at least a pair of derivative values; and categorizing by the processor a leaky or tight state of the specimen under test by a pattern recognition process based on the pair of derivative values.
    Type: Grant
    Filed: January 9, 2019
    Date of Patent: November 24, 2020
    Assignee: Inficon GMBH
    Inventors: Silvio Decker, Daniel Wetzig, Hjalmar Bruhns, Stefan Mebus
  • Patent number: 10794738
    Abstract: An integrated sensor device including a first die, housing a sensor element to detect a quantity external to the sensor device and transduce the external quantity into an electrical sensing signal; a second die mechanically coupled to the first die so that the first and second dies are stacked on one another along one and the same axis; and at least one heater of a resistive type integrated in the first die and/or in the second die, having a first conduction terminal and a second conduction terminal configured to couple respective first and second conduction terminals of a signal generator for causing an electric current to flow, in use, between the first and second conduction terminals of the heater and generate heat by the Joule effect. It is possible to carry out calibration in temperature of the sensor element.
    Type: Grant
    Filed: July 30, 2018
    Date of Patent: October 6, 2020
    Assignee: STMicroelectronics S.r.l.
    Inventors: Dario Paci, Francesco Procopio, Carlo Valzasina, Paolo Angelini, Francesco Diazzi, Roberto Pio Baorda, Danilo Karim Kaddouri
  • Patent number: 10775262
    Abstract: In some embodiments, a computer system generates display content indicating a likely direction and estimated distance to a potential gas leak source. The content includes a street map and at least one search area indicator on the map that indicates a search area suspected to have a gas leak source. The search area indicator has an axis indicating a representative wind direction relative to a geo-referenced location of at least one gas concentration measurement point. The search area indicator also has a width relative to the axis. The width is indicative of a wind direction variability associated with a plurality of wind direction measurements in an area of the gas concentration measurement point. The axis also preferably has a length indicating an estimated maximum distance to the potential gas leak source.
    Type: Grant
    Filed: June 24, 2019
    Date of Patent: September 15, 2020
    Assignee: Picarro Inc.
    Inventors: Sze M. Tan, Eric R. Crosson, Chris W. Rella
  • Patent number: 10755442
    Abstract: An oil leakage detector of the present invention includes an image processing unit wherein the image processing unit calculates the values of saturation and intensity of each pixel in the color image of the object after an ultra-violet light is irradiated thereon, draws an intensity-saturation characteristic line of the saturation expressed in an X-axis and the intensity expressed in a Y-axis, sets an upper limit and a lower limit of intensity of each saturation as a threshold value based on an area without oil adhesion on the surface of the object, and determines, in the intensity-saturation characteristic line, an area corresponding to a pixel group where the intensity exceeds the threshold value of the upper limit and a pixel group where the intensity falls below the threshold value of the lower limit, to be an oil leakage adhered area.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: August 25, 2020
    Assignee: Hitachi, Ltd.
    Inventors: Li Lu, Satoshi Ichimura, Tomohiro Moriyama, Jun Nukaga, Toshiaki Rokunohe, Akira Yamagishi, Yasutomo Saito
  • Patent number: 10729316
    Abstract: A method for reprocessing a surgical instrument in a reprocessing apparatus, where the surgical instrument has at least one channel to be cleaned. The method including: connecting the surgical instrument to a compressed air hose for supplying compressed air to the at least one channel; supplying drying air to the compressed air hose to leak test the surgical instrument using the drying air, the drying air having less moisture content than the compressed air; and subsequent to the supplying of the drying air, reprocessing the surgical instrument using at least one cleaning liquid.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: August 4, 2020
    Assignee: OLYMPUS WINTER & IBE GMBH
    Inventors: Henning Thate, Michael Lengsfeld, Eugen Frick
  • Patent number: 10725174
    Abstract: Methods and systems for estimating a distance between an acoustic sensor and an acoustic reflector in a conduit are disclosed. One such method includes using the acoustic sensor to measure a combined acoustic signal that comprises an originating acoustic signal propagating along the conduit and an echo signal. The echo signal is generated by the originating acoustic signal reflecting off the acoustic reflector after propagating past the acoustic sensor. A frequency domain representation of the combined acoustic signal is determined and the echo signal is identified by identifying in the frequency domain representation periodic oscillations having a peak-to-peak difference between 0.75 Hz and 1500 Hz. The distance between the acoustic sensor and the acoustic reflector is determined from the velocity of the echo signal and a time required for the echo signal to propagate between the acoustic sensor and the acoustic reflector.
    Type: Grant
    Filed: August 22, 2016
    Date of Patent: July 28, 2020
    Assignee: Hifi Engineering Inc.
    Inventors: Seyed Ehsan Jalilian, Arne Dankers
  • Patent number: 10718608
    Abstract: A mobile measurement system for three-dimensional optical measurement of vehicles and vehicle parts, includes a measurement auxiliary device which can be arranged on the vehicle or vehicle part with repeat accuracy, and a mobile measurement trolley on which a robot is arranged, which carries at least one measurement sensor, and which further has a coupling apparatus for mechanically coupling to the measurement auxiliary device, enabling positioning of the measurement trolley relative to the measurement auxiliary device, and thus relative to the vehicle or vehicle part, with repeat accuracy.
    Type: Grant
    Filed: October 3, 2018
    Date of Patent: July 21, 2020
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Steffen Bindel, Alexander Koenig, Michael Heinz, Christopher Kurth
  • Patent number: 10704983
    Abstract: This disclosure relates to a server includes a chassis, a processor, a liquid cooling tube and a liquid leak detection system. The processor is disposed in the chassis. The liquid cooling tube is disposed on the processor. The liquid leak detection system includes a circuit board and a first detecting wire. The circuit board is disposed in the chassis. The first detecting wire is disposed on a side of the liquid cooling tube and electrically connected to the circuit board.
    Type: Grant
    Filed: September 16, 2019
    Date of Patent: July 7, 2020
    Assignees: INVENTEC (PUDONG) TECHNOLOGY CORPORATION, INVENTEC CORPORATION
    Inventors: Guang-Zhao Tian, Zhao Geng
  • Patent number: 10634577
    Abstract: A leak detection module for checking the seal-tightness of an object to be tested by tracer gas is provided, including a leak detector and a probe configured to be manipulated by a user; and a vision device including a processing and display unit configured to communicate with the leak detector, a securing means configured to secure the vision device on a head of the user, and a viewing surface fixed to the securing means and configured to be placed in a field of view of the user, the processing and display unit being further configured to display, on the viewing surface, information relating to detection of leaks including at least one signal representative of a concentration of tracer gas measured by the leak detector. A method for checking the seal-tightness of an object to be tested by tracer gas is also provided.
    Type: Grant
    Filed: October 19, 2018
    Date of Patent: April 28, 2020
    Assignee: PFEIFFER VACUUM
    Inventors: Smail Hadj-Rabah, Ghislain Jacquot, Mathieu Schreiner, Laurent Ducimetiere, Cyrille Nomine, Pascal Jourdan
  • Patent number: 10571357
    Abstract: A leak check system is provided, which supplies air to inspection target space that an object to be inspected has and checks leak based on a pressure change of inspection target space. System includes pedestal, robotic arm including plurality of arm bodies serially coupled from pedestal, robot control device configured to control operation of robotic arm, air supply hand, having air discharge part connected to object to be inspected to discharge air into inspection target space, and attachably and detachably attached to a tip-end part of robotic arm, air supply source, air supply pipe configured to lead air from air supply source to air discharge part, pressure sensor, provided to air supply pipe, and configured to send detected pressure data to robot control device, and air supply mechanism of which supply of air from air supply source to air discharge part is controlled by robot control device.
    Type: Grant
    Filed: May 16, 2016
    Date of Patent: February 25, 2020
    Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Hideshi Yamane, Jun Takebayashi, Shuhei Kuraoka, Tatsuhiro Uto, Shinichi Fujisawa, Hiroyuki Mizumoto
  • Patent number: 10539481
    Abstract: A method is provided for detecting leaks in a disposable medical fluid cassette that includes a base and a flexible membrane attached to the base in such a way that the base and the flexible membrane cooperate to at least partially form a fluid passageway. The method includes applying a first force to the flexible membrane, measuring a first physical property of a system that includes the medical fluid cassette a medical fluid pumping machine, removing the first force from the flexible membrane, applying a second force to the flexible membrane, measuring a second physical property of the system, and determining whether the medical fluid cassette leaks based on a comparison of the first physical property and the second physical property.
    Type: Grant
    Filed: January 5, 2017
    Date of Patent: January 21, 2020
    Assignee: Fresenius Medical Care Holdings, Inc.
    Inventors: Kulwinder S. Plahey, Jie Zhu, Tri Ly, Robert Matthew Ohline, William Scott Crawford
  • Patent number: 10514328
    Abstract: The testing apparatus facilitates the testing of surfaces for contaminants such as soluble salts prior to applying a protective coating. The testing apparatus includes an air-permeable water-resistant membrane, an overlay, and a test chamber. When assembled, the testing apparatus provides an easily removable testing apparatus that encloses a void into which a solvent may be injected to determine the level of contamination of the surface.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: December 24, 2019
    Assignee: DEFELKSO CORPORATION
    Inventors: Leon Vandervalk, Steven Nowell, Nicholas Williams
  • Patent number: 10495539
    Abstract: The invention provides an aluminum alloy hub positioning fixture. The aluminum alloy hub positioning fixture adopts an upper trapezoidal metal taper sleeve and a lower trapezoidal metal taper sleeve, the lower trapezoidal metal taper sleeve is in contact with the central hole of a hub, and the upper trapezoidal metal taper sleeve is in contact with the cap section of the hub; the lower trapezoidal metal taper sleeve is mounted on a hollow shaft, and a metal pipe is arranged in the middle of the hollow shaft. During working, the hub is positioned and mounted on the lower trapezoidal metal taper sleeve via the central hole, the upper trapezoidal metal taper sleeve is in vertical contact with the cap section of the hub under the action of a cylinder.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: December 3, 2019
    Assignee: CITIC DICASTAL CO., LTD
    Inventors: Jinqi Lv, Zhipeng Li, Hanbao Sun, Zhuxing Wang, Hongfu Jin, Yingwei Zhu, Ling Jiang, Zhihua Zhu
  • Patent number: 10400762
    Abstract: The invention relates to a method and to a device for calibrating a pump (1) provided in a pump line (6), the device comprising an actuator (2) for setting the pumping capacity of the pump (1), and a control unit (3). The device comprises a flow monitor (4) in the fuel line (6). The control unit (3) is designed to substantially steadily vary the controlled variable of the actuator (2), when starting the pump (1), up to the switch point (SP) of the flow monitor (4), and to ascertain and store a controlled variable associated with the respective switch point (SP), to ascertain a controlled variable difference value (?f) between a reference controlled variable (fR) stored for the pump (1) and the flow monitor (4) and a calibration controlled variable (fK) ascertained during the calibration, and to calibrate the controlled variable of the actuator (2) of the pump (1) based on the controlled variable difference value (?f).
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: September 3, 2019
    Assignee: AVL List GmbH
    Inventors: Vedran Burazer, Michael Buchner, Georg Lichtenegger
  • Patent number: 10401251
    Abstract: The invention relates to a film chamber for receiving a test object to be tested for the presence of a leak, including at least two film layers and at least two frame elements, each of which has a sealing surface so that the two frame elements lie against each other in a gas-tight manner in order to hermetically seal the film chamber. Each of the two film layers has at least one retaining profile in a wall region, and each of the two frame elements has at least one retaining groove in the frame element sealing surface in order to receive a retaining profile such that the two film layers are held between the two frame elements substantially by a formfitting connection.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: September 3, 2019
    Assignee: INFICON GmbH
    Inventors: Hendrik Van Triest, Michael Dauenhauer
  • Patent number: 10345186
    Abstract: A device comprising a pressure monitor and a control means that receives a signal representing measured pressure at the pressure monitor and controls the controllable elements of a fluid system is utilized to monitor a fluid system for error conditions, to optimize operations and to diagnose the fluid system. By following a testing protocol that selectively enables parts of the system, the control means narrows the list of possible falling components. Comparing the measured pressure against normal pressures allows the device to identify error conditions. Determining the volume of fluid being transported and controlling the duration of the flow optimizes operation of the fluid system.
    Type: Grant
    Filed: August 18, 2017
    Date of Patent: July 9, 2019
    Assignee: WATERS TECHNOLOGIES CORPORATION
    Inventors: Theodore D. Ciolkosz, James E. Usowicz, Peyton C. Beals, Russell Keene
  • Patent number: 10337946
    Abstract: In some embodiments, a computer system generates display content indicating a likely direction and estimated distance to a potential gas leak source. The content includes a street map and at least one search area indicator on the map that indicates a search area suspected to have a gas leak source. The search area indicator has an axis indicating a representative wind direction relative to a geo-referenced location of at least one gas concentration measurement point. The search area indicator also has a width relative to the axis. The width is indicative of a wind direction variability associated with a plurality of wind direction measurements in an area of the gas concentration measurement point. The axis also preferably has a length indicating an estimated maximum distance to the potential gas leak source.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: July 2, 2019
    Assignee: Picarro Inc.
    Inventors: Sze M. Tan, Eric R. Crosson, Chris W. Rella
  • Patent number: 10317309
    Abstract: A test system and a corresponding method for testing the seal of a glove which is installed in a port of an isolator, including a test disc which can be connected in a hermetically sealed fashion to the port. The glove and test disc define a sealed glove volume which can be placed under excess pressure. The test disc has a pressure-measuring device with a microprocessor and a memory for recording and storing a pressure profile in the glove volume and a data interface. The glove and port have identification elements which are read by a reading device of the test disc and information concerning the pressure profile along with the identities of the glove and port are transmitted wirelessly to an evaluation unit which estimates and records a residual period of use of the glove. A plurality of gloves in ports can be tested simultaneously.
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: June 11, 2019
    Inventor: Michael Keil
  • Patent number: 10317310
    Abstract: A test system and a corresponding method for testing the seal of a glove which is installed in a port of an isolator, including a test disc which can be connected in a hermetically sealed fashion to the port. The glove and test disc define a sealed glove volume which can be placed under excess pressure. The test disc has a pressure-measuring device with a microprocessor and a memory for recording and storing a pressure profile in the glove volume and a data interface. The glove and port have identification elements which are read by a reading device of the test disc and information concerning the pressure profile along with the identities of the glove and port are transmitted wirelessly to an evaluation unit which estimates and records a residual period of use of the glove. A plurality of gloves in ports can be tested simultaneously.
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: June 11, 2019
    Inventor: Michael Keil
  • Patent number: 10317307
    Abstract: A system for detecting leaks is provided comprising an accumulator, a flow controller in communication with the accumulator, and a flow meter/sensor in communication with the accumulator, the flow controller and a UUT. The flow meter is structured to supply gas from the accumulator to the UUT and measure a flow rate of the supplied gas, the flow meter providing feedback to the flow controller representing the flow rate, and the flow controller responding to the feedback by supplying flow compensation gas to the accumulator to maintain a desired pressure in the accumulator. Methods are also provided for detecting small leaks, especially with large units under test (“UUTs”).
    Type: Grant
    Filed: March 5, 2018
    Date of Patent: June 11, 2019
    Assignee: Advanced Test Concepts, LLC
    Inventors: Nehemia Sagi, Oleksandr Ivanchenko, George Lawrence Bishop, III