Lightning arrestor with a thermoplastic envelope having an embos

Details Lightning arrestor with a thermoplastic envelope having an embos Lightning arrestor with a thermoplastic envelope having an embos

1997-12-19

1999-02-23

Gaffin, Jeffrey

Electricity: electrical systems and devices

Safety and protection of systems and devices

High voltage dissipation

361118, 361127, H02H 100

Patent

active

058750908

ABSTRACT:
The lightning arrestor has two metal end fittings for connection purposes, a stack of electrically conductive components extending along a longitudinal axis between the two end fittings, and an envelope surrounding the electrical components and the end fittings in such a manner as to maintain electrical contact between the components. The envelope is made of a thermoplastic material that molded over the electrical components and the end fittings. It has an embossed outside surface including depressions and projections. The depressions correspond to zones of reduced envelope wall thickness and they serve to constitute lateral openings through the envelope for allowing gas to escape to the atmosphere.

REFERENCES:
patent: 4825188 (1989-04-01), Parraud
patent: 4962440 (1990-10-01), Johnnerfelt
patent: 5128824 (1992-07-01), Yaworski
Patent Abstract of Japan, vol. 13, no. 390 (E-813) 29 Aug. 1989 and JP-A-1 137 603 (Otawa Denki Kogyo) 30 May 1989.

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