Method of manufacturing a lightning arrester, and a lightning ar

Details Method of manufacturing a lightning arrester, and a lightning ar Method of manufacturing a lightning arrester, and a lightning ar

1988-03-03

1989-04-25

Goldberg, E. A.

Electrical resistors

Resistance value responsive to a condition

Current and/or voltage

361127, 295921, H01C 710

Patent

active

048251887

ABSTRACT:
The present invention relates to a method of manufacturing a lightning arrester (100) having two end fittings (2,20) at either end of a substantially cylindrical central core constituted by a stack of pellets (6, 7, 8) made of a varistor-type material and having holes therethrough whereby the pellets are threaded over a central rod (1) made of stratified material. The stack assembly is put into compression against the two facing faces of the end fittings (2, 20) by means of the rod (1), the space between the rod (1) and the pellets (6, 7, 8) is filled by casting or injecting an insulating material, with the assembly obtained in this way being perfectly rigid, and a coating (30) of an elastomer of the EPDM type is molded over the assembly, with the coating adherring perfectly to all of the surfaces of the core and of the end fittings which it covers.

REFERENCES:
patent: 4262318 (1981-04-01), Shirakawa et al.
patent: 4587592 (1986-05-01), Nakano et al.
patent: 4638285 (1987-01-01), Lott
patent: 4729053 (1988-03-01), Maler et al.

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