Insulator and insulator apparatus

An insulator includes a disklike shed portion (21) and a plurality of annular rib portions (23a to 23e) formed concentrically on the underside of the shed portion (21) and projecting downward along respectively predetermined lengths. Among the rib portions (23a to 23e), a first rib portion (23a) loc...

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Bibliographic Details
Main Authors RYOICHI, MINE, MITSUHARU, OKAMOTO, TAKAO, NAKAMURA
Format Patent
LanguageEnglish
French
German
Published 19.11.2003
Edition7
Subjects
BASIC ELECTRIC ELEMENTS
CABLES
CONDUCTORS
ELECTRICITY
INSULATORS
SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES
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Summary:An insulator includes a disklike shed portion (21) and a plurality of annular rib portions (23a to 23e) formed concentrically on the underside of the shed portion (21) and projecting downward along respectively predetermined lengths. Among the rib portions (23a to 23e), a first rib portion (23a) located outermost is the longest; a second rib portion (23b) is shorter than the first rib portion (23a); a third rib portion (23c) assumes a length such that the third rib portion (23c) intersects a straight line L1 tangent to the end of the first rib portion (23a) and to that of the second rib portion (23b); and a fourth rib portion (23d) assumes a length such that the fourth rib portion (23d) intersects a straight line L2 tangent to the end of the first rib portion (23a) and to that of the third rib portion (23c).
Bibliography:Application Number: EP20020254811