Electricity: electrical systems and devices – Safety and protection of systems and devices – High voltage dissipation
Patent
1985-03-21
1986-12-02
Pellinen, A. D.
Electricity: electrical systems and devices
Safety and protection of systems and devices
High voltage dissipation
361124, 361129, 337 29, H02H 322
Patent
active
046269550
ABSTRACT:
A three electrode gas tube protector has a central electrode and a line electrode positioned on each side, with a gap between each line electrode and the central electrode, the gaps being at a subatmospheric pressure. Connecting to each line electrode, in an axial arrangement, is a ground assembly having two coaxial conductive cups, their bottom ends spaced by a fusible member. A contact member is positioned within the inner cup and has a head and a stem. Around the stem is a compression spring, the stem passing through the bottoms of the cups and the fusible member. The end of the stem extends over the outer surface of the outer cup bottom, as by riveting. The spring is constrained between the bottom of the inner cup and the head of the contact member. On melting of the fusible member, the inner cup moves axially in the outer cup and a radially extending member, such as a flange or other, moves into contact with a ground member in a support structure.
REFERENCES:
patent: 4015228 (1977-03-01), Eda et al.
patent: 4056840 (1977-11-01), Lundsgaard et al.
patent: 4074337 (1978-02-01), Debortoli et al.
DeBoer T.
Northern Telecom Limited
Pellinen A. D.
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