Tubular Shaped Patents (Class 218/11)
  • Patent number: 9012800
    Abstract: A gas circuit breaker is provided, avoiding change in the position of a cover member and without weakening of the blow of gas to the arc in an arc discharge cavity even when a surface of the cover member in contact with the arc discharge cavity is damaged. The gas circuit breaker includes a contact ring, a holder attached to the contact ring, and extending to a path of arc-extinguishing gas that extinguishes an arc, and an electrically insulative cover member attached to the holder.
    Type: Grant
    Filed: May 21, 2010
    Date of Patent: April 21, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Toru Yamashita, Daisuke Yoshida, Katsuhiko Horinouchi, Tatsuya Hayashi
  • Patent number: 6891122
    Abstract: On both sides of a metal switching chamber, the novel vacuum switch tubes are respectively provided with two ceramic insulators which have the same diameter. Axially interspaced cylindrical vapor shields are fixed to the wing parts of said components. The easy to produce low-volume structure means that is possible to control operating voltages of more than 60 kV.
    Type: Grant
    Filed: June 8, 2001
    Date of Patent: May 10, 2005
    Assignee: Siemens Aktiengesellschaft
    Inventor: Roman Renz
  • Patent number: 6163001
    Abstract: Arranged in the continuation of an arcing chamber (16) bounded by consumable rings (32a, 32b) are pressure chambers (25a, 25b) which are connected in each case to a heating volume (18), which concentrically surrounds the arcing chamber (16), via a return channel (28; 28b), which is rotationally symmetrical with reference to the switching axis and is at least initially of increasing cross section, and a non-return valve (29a; 29b). A circumferential blowout slot (19) opening into the arcing chamber (16) between the consumable rings (32a, 32b) issues from the heating volume (18). The pressure chambers (25a, 25b) are, moreover, connected via in each case a plurality of exhaust tubes (34a, 34b) to exhaust volumes (30a, 30b) and to one of them also via a pressure relief valve (37).
    Type: Grant
    Filed: April 13, 1999
    Date of Patent: December 19, 2000
    Assignee: ABB Research Ltd.
    Inventors: Lukas Zehnder, Kurt Kaltenegger, Lutz Niemeyer, Thomas Schoenemann, Gunter Speckhofer
  • Patent number: 5737174
    Abstract: An arc suppressor is disclosed which includes at least one cartridge having a housing formed with a first end carrying an electrode, a hollow interior and a second end which mounts a cylinder whose piston head is axially movable within the interior of the housing. The electrode of the cartridge and the metal body of the cylinder are each electrically connected by wires to respective grounded and electrostatically charged elements of the voltage block device associated with a system for supplying electrically conductive coating materials. The piston head of the cylinder is caused to move proximate the electrode carried by the housing sufficiently in advance of the movement of the grounded and charged elements of the voltage block device toward one another so as to induce the formation of an electrostatic discharge or arc within the interior of the cartridge instead of between the elements of the voltage block device.
    Type: Grant
    Filed: April 19, 1996
    Date of Patent: April 7, 1998
    Assignee: Nordson Corporation
    Inventor: Ronald D. Konieczynski