EP 0226474 B1 19930728 - CORROSION PROTECTION FOR THE CAP OF AN ELECTRICAL SUSPENSION INSULATOR
Title (en)
CORROSION PROTECTION FOR THE CAP OF AN ELECTRICAL SUSPENSION INSULATOR
Publication
Application
Priority
FR 8516919 A 19851115
Abstract (en)
[origin: US4670624A] An electrical insulator (1) of the type comprising at least one dielectric (2) and an iron or steel cap (3) fixed axially on the dielectric has a device for protecting the cap against corrosion as well as electric arcs. In one embodiment (FIGS. 1-3), the protection device comprises a zinc or aluminum part (10) shaped as a dish with a center hole (11) and outlet holes (12) for the egress of rainwater. The outside wall (13) of the part (10) curves upwardly toward the cap (3) and a portion of the part (10) is disposed between the base (6) of the cap (3) and the outer surface (7) of the dielectric (2). In another embodiment (FIG. 4), the protection device comprises a solid body of revolution (30) of semi-toroidal shape which is formed of zinc or aluminum and is cast directly around the base (6) of the cap (3) and has a thin flange extending between the base (6 )of the cap (3) and the outer surface (7) of the dielectric (2). The exterior surface (31) of the solid body of revolution (30) curves upwardly so as to provide between such exterior surface and the outer surface (7) of the dielectric (2) an area for the self-extinguishing of electric arcs.
IPC 1-7
IPC 8 full level
H01B 17/38 (2006.01); H01B 17/42 (2006.01)
CPC (source: EP US)
H01B 17/42 (2013.01 - EP US)
Citation (examination)
Le Petit Robert 1, p.1980
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
US 4670624 A 19870602; AT E92208 T1 19930815; AU 5605886 A 19870521; AU 591392 B2 19891130; BR 8601626 A 19871103; CA 1253225 A 19890425; DE 3688777 D1 19930902; DE 3688777 T2 19931111; EP 0226474 A1 19870624; EP 0226474 B1 19930728; ES 296682 U 19871201; ES 296682 Y 19880601; FR 2590398 A1 19870522; FR 2590398 B1 19880909; JP H0685285 B2 19941026; JP S62119813 A 19870601; MX 161729 A 19901220; NO 168218 B 19911014; NO 168218 C 19920122; NO 861242 L 19870518; NZ 215657 A 19890224; ZA 862421 B 19860929
DOCDB simple family (application)
US 81765186 A 19860110; AT 86400607 T 19860321; AU 5605886 A 19860414; BR 8601626 A 19860410; CA 505212 A 19860326; DE 3688777 T 19860321; EP 86400607 A 19860321; ES 296682 U 19860403; FR 8516919 A 19851115; JP 8785986 A 19860416; MX 208486 A 19860404; NO 861242 A 19860326; NZ 21565786 A 19860402; ZA 862421 A 19860402