Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Multiple contact type
Patent
1991-04-25
1992-11-17
Donovan, Lincoln
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Multiple contact type
200 50C, H01H 6702
Patent
active
051646943
ABSTRACT:
An interlock, for a pair of electromagnetic switches, includes operating members which are pivoted by movement of armatures of the switches between off and on positions. Ring segment cams are carried by the respective operating members along arcuate paths which intersect such that movement of one switch out of the off position mechanically blocks movement of the armature of the other switch out of the off position. For side by side electromagnetic switches, the operating members are directly confronting. For other arrangements of the switches, such as one above the other, the operating member of one switch includes a first pivot member pivoted by the associated armature, and a second pivot member on which the ring segment cam is carried, confronting the second operating member, and connected to and pivoted with the first pivot member by a connecting member.
REFERENCES:
patent: 2756612 (1956-07-01), Schleicher
patent: 3815063 (1974-06-01), Grunert et al.
patent: 4590387 (1986-05-01), Yoshida et al.
I. L. 14592, File 17-900 Instructions for Mechanical Interlock for Definite Purpose Contactors, effective Dec. 1972.
DeVault Birch L.
Edwards Glenn H.
Donovan Lincoln
Moran M. J.
Westinghouse Electric Corp.
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