Patents Assigned to Succursale de Collonge-Bellerive
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Patent number: 4711703Abstract: A method of thermal protection of a membrane-enclosed amperometric cell of the type comprising an electrolyte within an electrolyte space containing electrodes and enclosed by a semi-permeable membrane which defines a sensor face; heat exchange within said cell is effected for controlled heat compensation of the electrolyte when the sensor face is exposed to temperatures outside of the operative temperature range of the cell.Type: GrantFiled: January 23, 1986Date of Patent: December 8, 1987Assignee: Orbisphere Corporation Wilmington, Succursale de Collonge-BelleriveInventors: Harry D. Wright, John M. Hale, Eugen Weber
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Patent number: 4585542Abstract: A method of thermal protection of a membrane-enclosed amperometric cell of the type comprising an electrolyte within an electrolyte space containing electrodes and enclosed by a semi-permeable membrane which defines a sensor face; heat exchange within said cell is effected for controlled heat compensation of the electrolyte when the sensor face is exposed to temperatures outside of the operative temperature range of the cell.Type: GrantFiled: January 14, 1985Date of Patent: April 29, 1986Assignee: Orbisphere Corporation Wilmington, Succursale de Collonge-BelleriveInventors: Harry D. Wright, John M. Hale, Eugen Weber
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Patent number: 4563249Abstract: A method of and a sensor for quantitative electroanalytical determination of elemental hydrogen in a fluid medium are disclosed. A membrane enclosed amperometric cell is used that has at least two electrodes in contact with an aqueous electrolyte to provide a reaction impedance of the cell; the electrolyte is separated from the fluid medium by a membrane that is permeable to elemental hydrogen but substantially impermeable to the electrolyte and provides a membrane impedance of the cell; the electrodes include an anodic hydrogen sensing electrode and a cathodic counter electrode; the sensing electrode has a polished surface consisting of a platinum metal; further, the membrane is selected such that the membrane impedance exceeds the reaction impedance sufficiently to provide for membrane-controlled operation of the cell.Type: GrantFiled: May 10, 1983Date of Patent: January 7, 1986Assignee: Orbisphere Corporation Wilmington, Succursale de Collonge-BelleriveInventor: John M. Hale
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Patent number: 4339634Abstract: A keyboard for input of data or control signals into an electronic measuring instrument, computing device or the like including a keyboard panel, a number of pushbutton switch elements arranged under the keyboard panel and having manually controlled ends that extend upwards through openings in the keyboard panel, and sealing means for preventing penetration of water through the openings of the keyboard panel; for such prevention of water penetration, each of the keyboard panel openings around the upwardly extending end of the switch elements is provided with a resiliently elastic hollow capsule that projects upward from the keyboard panel; each capsule is a substantially integral body comprising a substantially hollow cylindrical neck section at the lower capsule end, an adjacent deforming section and a keying area section at the upper capsule end; the deforming section of the capsules forms an elastic shape-restoring bulge whose outer diameter is greater than the outer diameter of the associated neck sectionType: GrantFiled: January 12, 1981Date of Patent: July 13, 1982Assignee: Obisphere Corporation Wilmington, Succursale de Collonge-BelleriveInventor: Eugen Weber
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Patent number: 4325797Abstract: A method of mounting and securing a membrane of polymer film on an amperometric cell that has a cylindrical cell end provided with an electrolyte-bearing sensor face; the holding member is a substantially non-resilient and creep-resistant die ring, having a cylindrical inner surface that fits onto the cylindrical cell end; at least one tapered inner surface portion extends outwardly toward a leading end of the die ring; the leading end is moved over the cell end whereby the polymer film is deep-drawn between the die ring and the cylindrical cell end and is permanently shaped to form a cup-shaped membrane portion sealingly held by the die ring on the cylindrical cell end during operation of the amperometric cell.Type: GrantFiled: June 30, 1980Date of Patent: April 20, 1982Assignee: Orbisphere Corporation Wilmington, Succursale de Collonge-BelleriveInventors: John M. Hale, Eugen Weber
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Patent number: 4153149Abstract: A sealed adjusting device for mounting in the wall of a sealed instrument housing that includes at least one adjustable element, such as a potentiometer. The adjusting device comprises an elongated sleeve-like mounting hub capable of being sealingly secured in the housing wall, and a normally freely rotatable or freely turnable knob structured as a hollow capsule rotatably inserted onto one end of the mounting hub. The other end of the mounting hub receives or is connected with a portion of the adjustable element. A spring is provided within the mounting hub to hold the knob in its freely turnable or rotatable position. The knob is operatively connected with a clutch-sleeve for temporary engagement with the rotatable operating end of the adjustable element when the knob is pushed against the spring.Type: GrantFiled: January 23, 1978Date of Patent: May 8, 1979Assignees: Orbisphere Corporation, Succursale de Collonge-BelleriveInventor: Eugen Weber
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Patent number: 4096047Abstract: Electroanalytic transducers for electrochemical analysis of chemical substances are disclosed. The transducers are of the type which include electrodes contacting an electrolyte solution. In accordance with the method and apparatus of the invention, means insulating an electrode are held in a mutually pressing engagement over preselected portions of the electrode to insulate that portion from the electrolyte and prevent creep of the electrolyte between the insulating means and the preselected portions. Thus, the surface area of the electrode exposed to the electrolyte is maintained substantially constant during the service life of the transducer. In a preferred embodiment, sensor or working and counter electrodes are coaxially mounted and circumferentially coaxially separated by annular insulating means. Spring means urge the inner coaxially mounted electrode and the annular insulating means together so that only the surface of the cross-sectional end of the inner electrode is exposed to electrolyte.Type: GrantFiled: March 1, 1977Date of Patent: June 20, 1978Assignee: Orbisphere Corporation, Wilmington, Succursale de Collonge-BelleriveInventors: John Martin Hale, Eugen Weber