Electricity: electrothermally or thermally actuated switches – Electrothermally actuated switches – Space discharge device
Patent
1983-06-20
1985-03-05
Moose, Jr., Harry E.
Electricity: electrothermally or thermally actuated switches
Electrothermally actuated switches
Space discharge device
361124, 361125, 361131, H01H 3736
Patent
active
045034141
ABSTRACT:
A device for connection to lightning arresters isolates the grounded lead and contains the resulting spark or arcing flame, including any hot particles generated when ground disconnection is made due to excessive current flow through the arrester. A central spacer member is screwed onto the existing ground lead terminal of the lightning arrester and contains an arc extinguishing channel with an internal fusible link adapted to melt in an overload condition. A shielding cup surrounds the central spacer member for containment of sparks and arcing, and a ground lead connector wire extends from the internal fusible link to a new ground lead terminal at the exterior of the shielding cup, for connection to a grounded lead. When excessive current flows through the arrester, the internal link melts, causing sparking or arcing which is substantially contained by the spacer member and the shielding cup, and which generates pressurized gases effective to push the shielding cup and grounded lead quickly away from the lightning arrester, completing the disconnect and extinguishing the arc.
REFERENCES:
patent: 2174477 (1939-09-01), Pittman et al.
patent: 2315320 (1943-03-01), Earle
patent: 2516026 (1950-07-01), Strom et al.
patent: 2524101 (1950-10-01), Earle
patent: 2989608 (1961-06-01), Hicks
Brainard Richard H.
Sykes Huey P.
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