Title: Electric insulator
Application Number: 85108664 Application Date: 1985.11.27
Publication Number: 1009408 Publication Date: 1987.03.11
Approval Pub. Date: 1991.01.02 Granted Pub. Date: 1991.01.02
International Classifi-cation: H01B17/02;H01B17/08
Applicant(s) Name: NGK Insulators Ltd. Address:
Inventor(s) Name: Katsuji Kiyoie
Attorney & Agent: WANG DONGLING
Abstract:
    A porcelain electrical insulator resistant to destruction by projectiles comprises a shed and a head portion protrusively and integrally formed with the shed. The thinnest part of the shed is not less than 5 mm, and the thickness of the head portion which is to be covered with a cap or the thickness of the insulator in the vicinity of the junction portion between the head portion and the shed is not less than 2 times the minimum thickness of the shed.
Time: 11