Title: Polyphase isolator switches

Abstract: A polyphase, e.g. three phase, isolator switch, of which the movable contact members of all phases extend through a common bushing insulator mounted in a partition between two compartments for rotation about an axis normal to said partition and are simultaneously moved to make and break the circuit by rotation of said insulator.

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Inventors: Irik, Gijsbert W. (Bilthoven, NL)
Marien, Pieter (de Meeren, NL)
Fierst van Wijnandsbergen, Marius F. (Breukelen, NL)

Application Number: 814934
Filing Date: 1977-07-12
Publication_date: 1980-01-15
Assignee: Coq B.V. (Utrecht, NL)
Primary Class(es): 200/501 200/238, 200/293, 218/44, 218/152
Other Classes:
US Patent Ref:

2070337	Feb, 1937	Lowell	200/155.
3247344	Apr, 1966	Russell	200/238.
3372254	Mar, 1968	Burch et al.	200/63.

Other Refs: 3319643549 of443175

Sep, 1958	CH
, 1911	GB
Feb, 1936	GB

Primary Examiner: Moy, Joseph Man-Fu
Assistant Examiner:
Attorney: Snyder; John P.