An electrical switching device is filled with a dielectric insulating medium comprising an
organofluorine compound, in particular a fluoroether, a fluoroarnine, a fluoroketone or a …

(51) Int. Cl. HIH 3.3/9(2006.01) The disclosure relates to an electrical Switching device,
eg,(52) US Cl........................... 218/157: 218/46; 218/156 a generator circuit breaker, and to a …

(57) ABSTRACT A power circuit breaker unit has first and secondarcing con tact pieces. A
contact gap is formed between the arcing con tact pieces. A Switch gas channel of the circuit …

(57) ABSTRACT A circuit breaker unit has first and second arcing contact pieces. A breaker
gap is formed between the two arcing con tact pieces. A Switching gas channel leads to the …

An arc-control chamber gear for contact electrodes, the gear possessing openings in collars
of an electrode centering cap so as to break the confinement of the electrodes and allow …

An electric switching device filled with a dielectric insulat ing medium includes first and
second arcing contact, first exhaust volume downstream of first arcing contact and second …

A polarity-independent switching device for carrying and disconnecting high DC currents
has a gastight, encapsulated, electrically insulating housing which can be filled with an …

A switchgear assembly has a contact gap and an insulating material nozzle. The insulating
material nozzle at least partly encloses the contact gap. A nozzle channel for the insulating …

(Continued) Primary Examiner—Renee S Luebke Assistant Examiner—William Bolton (74)
Attorney, Agent, or Firm—Laurence Greenberg; Werner Stemer; Ralph Locher (57) …

J. Williams et al., DNA polymorphisms amplified by arbi trary primers are useful as genetic
markers, Nucleic Acids Research vol. 18 No. 22: pp. 6531–6535 (1990). P. Liang et al …