Electricity: electrical systems and devices – Safety and protection of systems and devices – High voltage dissipation
Patent
1980-10-14
1982-10-19
Moose, Jr., Harry E.
Electricity: electrical systems and devices
Safety and protection of systems and devices
High voltage dissipation
337 18, 361119, H02H 322
Patent
active
043553451
ABSTRACT:
A lightning arrester including a metallic enclosure with an opening, a first electrode of electrically conducting metal traversing the enclosure opening and having a first discharge surface within the enclosure, a plug of electrically insulating material placed about the first electrode to hermetically seal the enclosure opening, and an inert gas mixture filling the enclosure. The first electrode has a thin long cylindrical portion and a flat end portion, like a nailhead, which provides the first discharge surface. Portions of the enclosure provide a second electrode having a second discharge surface within the enclosure which faces the first discharge surface, with a predetermined gap therebetween. The long thin portion of the first electrode within the enclosure is surrounded by a sleeve composed of a fusible, electrically and thermally conducting material. The melting point of the sleeve is such that any predetermined excessive heating of the first electrode due to abnormal operating conditions results in melting of the sleeve to ensure short-circuiting of both electrodes.
REFERENCES:
patent: 2415720 (1947-02-01), Angel et al.
patent: 2479179 (1949-08-01), Newbill
patent: 3522570 (1970-08-01), Wanaselja
patent: 4009422 (1977-02-01), Woodfill
patent: 4160968 (1979-07-01), Saini
Claude, S.A.
Coleman Edward J.
Moose Jr. Harry E.
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