EP 0062186 B1 19850710 - DISPOSITION OF CONTACTS FOR A VACUUM SWITCH
Title (en)
DISPOSITION OF CONTACTS FOR A VACUUM SWITCH
Publication
Application
Priority
DE 3112009 A 19810326
Abstract (en)
[origin: US4459446A] A configuration for a contact arrangement is disclosed for a switch having two coaxially positioned and generally cylindrical contacts. Each contact contains a coaxial core of ferromagnetic material, and a current-carrying envelope surrounding the core has the form of a helix. The helical envelope creates a current component which sets up a magnetic field in the widening contact gap when the contacts are separated that disperses arcing. Moreover, the field reinforces the closure pressure when the contacts are in their closed position. Ellipsoid shaping enables the field to be normal at all points of the contact-making surfaces.
IPC 1-7
IPC 8 full level
H01H 33/66 (2006.01); H01H 33/664 (2006.01); H01H 33/18 (2006.01)
CPC (source: EP US)
H01H 33/6646 (2013.01 - EP US); H01H 33/185 (2013.01 - EP US); H01H 33/6642 (2013.01 - EP US); H01H 33/6645 (2013.01 - EP US)
Designated contracting state (EPC)
AT CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0062186 A1 19821013; EP 0062186 B1 19850710; AT E14258 T1 19850715; DE 3112009 A1 19821007; DE 3264618 D1 19850814; DK 138482 A 19820927; FI 820738 L 19820927; IN 158122 B 19860913; JP S57172622 A 19821023; NO 820976 L 19820927; US 4459446 A 19840710
DOCDB simple family (application)
EP 82102093 A 19820315; AT 82102093 T 19820315; DE 3112009 A 19810326; DE 3264618 T 19820315; DK 138482 A 19820326; FI 820738 A 19820302; IN 348CA1982 A 19820327; JP 4707182 A 19820324; NO 820976 A 19820324; US 51172083 A 19830708