Patents Examined by Joshua Allen
  • Patent number: 9850589
    Abstract: A system and methods are provided for electrochemical grinding a workpiece. In one embodiment, a method includes controlling potentials to grinding tool and the workpiece, controlling applying electrolyte, and controlling grinding of the workpiece by the grinding tool. The method may also include determining screen replacement when there is sufficient metal plated.
    Type: Grant
    Filed: May 4, 2015
    Date of Patent: December 26, 2017
    Inventors: Ying She, Raja Kountanya, Changsheng Guo, Daniel V. Viens
  • Patent number: 9827628
    Abstract: A fixture for an electro-chemical machining (ECM) electrode is provided. The fixture may include a clamp having a shape and size configured to selectively engage in at least a portion of a selected dovetail slot of a plurality of dovetail slots in a turbine wheel. An electrode mount positions an electrode head relative to the clamp such that the electrode head operatively engages a portion of the selected dovetail slot for electro-chemical machining of the portion. The fixture's electrode may act as a cathode for the ECM process. The fixture allows for ECM on site without removing a turbine wheel from a turbomachine.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: November 28, 2017
    Inventors: Daryl Paul Capriotti, James Bradford Holmes, Andrew Lee Trimmer
  • Patent number: 9829461
    Abstract: A measuring device comprises a guard electrode that is arranged around a cathode, reduces oxygen that is not from an oxygen permeable membrane, and inhibits the oxygen from reaching the cathode. The guard electrode is electrically connected to an anode through a resistor having a prescribed resistance.
    Type: Grant
    Filed: November 15, 2013
    Date of Patent: November 28, 2017
    Assignee: HORIBA Advanced Techno, Co., Ltd.
    Inventors: Riichiro Suzuki, Kentaro Inoue
  • Patent number: 9804139
    Abstract: A sensor element 101 of a gas sensor 100 includes a blocking portion 65 including an outer blocking layer 67 that is formed to cover, in an upper surface of a multilayer body, at least a part of an upper closest region 6a where an outer pump electrode 23 is not disposed and a distance up to a third inner cavity 61 is minimal. The outer blocking layer 67 does not have conductivity for one or more among various types of substances containing oxygen. The outer blocking layer 67 is disposed between a lead line 93 for the outer pump electrode and the upper surface of the multilayer body to provide insulation therebetween, and is disposed between an upper connector pad 91 and the upper surface of the multilayer body to provide insulation therebetween. A porous protective layer 24 covers the outer pump electrode 23.
    Type: Grant
    Filed: June 8, 2015
    Date of Patent: October 31, 2017
    Assignee: NGK Insulators, Ltd.
    Inventors: Mika Murakami, Sumiko Horisaka, Hiroki Fujita
  • Patent number: 9726633
    Abstract: An electrochemical gas sensor system (100) detects the concentration of a harmful gas in a measuring environment (70). The electrochemical gas sensor system (100) contains a voltage generator (19) and an electrochemical gas sensor (1). The electrochemical gas sensor (1) has a sensor housing (2) and a gas inlet (18). A measuring electrode (3), an auxiliary electrode (5), a reference electrode (17), a first generator electrode (13) and a second generator electrode (14) are in an electrolyte liquid (11) in the sensor housing (2). A salt (28) (halide) of a halogen is dissolved in the electrolyte liquid (11). The first generator electrode (13) and the second generator electrode (14) are connected to the voltage generator (19) to form a galvanic source. The galvanic source causes the salt (28) (halide) to react to form a halogen (28?). A defined, largely stable reference voltage potential becomes established on the reference electrode (17).
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: August 8, 2017
    Assignee: Dräger Safety AG & Co. KGaA
    Inventors: Frank Mett, Kerstin Lichtenfeldt, Johanna Jörn
  • Patent number: 9696274
    Abstract: A gas sensor element of an air/fuel ratio sensor has a structure in which at least a part of an end portion of a porous electrode is sandwiched between a porous member and a solid electrolyte member. Therefore, it is possible to restrain shrinkage of the porous electrode during manufacture of the gas sensor element, which shrinkage would otherwise occur at the time of heating in a debindering step or at the beginning of a firing step, whereby occurrence of green breakage in the solid electrolyte member is restrained. Thus, cracking due to green breakage is restrained from occurring in the solid electrolyte member produced through firing. Since the end portion of the porous electrode can receive oxygen through the porous member, blackening of the solid electrolyte member can be prevented.
    Type: Grant
    Filed: February 3, 2015
    Date of Patent: July 4, 2017
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Yasumitsu Shimizu, Seiji Oya