EP 0274674 B1 19910508 - PROCESS FOR MANUFACTURING A LIGHTNING ARRESTER, AND LIGHTNING ARRESTER OBTAINED BY THIS PROCESS
Title (en)
PROCESS FOR MANUFACTURING A LIGHTNING ARRESTER, AND LIGHTNING ARRESTER OBTAINED BY THIS PROCESS
Publication
Application
Priority
FR 8617424 A 19861212
Abstract (en)
[origin: US4833438A] A double molded over method of manufacturing a lightning arrester in which a central core 1 is made of zinc oxide in a first step, then two metal end fittings 5, 6 are molded onto the end faces and over the side thereof, and finally a coating of elastomer material 7 is molded around the side wall of the central core and over side portions of the end fittings. The core may be formed of a plurality of smaller section bars of zinc oxide regularly disposed about a longitudinal axis with the end fittings molded onto the end faces and about the sides of the end bars whose end faces are partially metallized. In a further variant, a stack of zinc oxide based pellets having the same cross-sectional area as the core in the first example, with the stack having the same overall length as the core if stiffened by thermal compression with fusible metal inserted between pairs of pellets. The stack assembly is then compressed mechanically in conjunction with heat treatment to effect very good mechanical bonding. The core assembly formed thereby is treated as above.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
H01C 7/12 (2013.01 - EP US); Y10T 29/49087 (2015.01 - EP US); Y10T 29/49101 (2015.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0274674 A1 19880720; EP 0274674 B1 19910508; AT E63399 T1 19910515; AU 592246 B2 19900104; AU 8251387 A 19880616; BR 8706753 A 19880705; CA 1315963 C 19930413; DE 3769955 D1 19910613; ES 2022282 B3 19911201; GR 3002390 T3 19921230; JP 2628664 B2 19970709; JP S63161601 A 19880705; NO 170790 B 19920824; NO 170790 C 19921202; NO 875129 D0 19871209; NO 875129 L 19880613; US 4833438 A 19890523
DOCDB simple family (application)
EP 87118254 A 19871209; AT 87118254 T 19871209; AU 8251387 A 19871214; BR 8706753 A 19871211; CA 554037 A 19871210; DE 3769955 T 19871209; ES 87118254 T 19871209; GR 910401096 T 19910729; JP 31310287 A 19871210; NO 875129 A 19871209; US 13179787 A 19871211