Safety switch that may be locked with an electromagnet

Details Safety switch that may be locked with an electromagnet Safety switch that may be locked with an electromagnet

1997-06-25

1999-01-19

Donovan, Lincoln

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Multiple contact type

335186, 335189, H01H 6702

Patent

active

058617868

ABSTRACT:
Safety switch with contacts that may be switched by means of an external actuator A. A housing 10 houses an electrical contact block B and an electromagnet E and this housing has a control head 11 attached to it that may be rotated around an axis X1 and which is fitted with a push rod 15 which may be moved parallel to this axis to act on the block. The core 20 of the electromagnet moves along an axis X3 parallel to X1 and co-operates with an element 22 which blocks the push rod by means of a two-position device which permits the push rod to be blocked when the electromagnet is either supplied with power or not supplied with power respectively.

REFERENCES:
patent: 4468977 (1984-09-01), Kummerow et al.
patent: 4901046 (1990-02-01), Alsch

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