Electromagnetic switchgear comprising a magnetic drive and a con

Details Electromagnetic switchgear comprising a magnetic drive and a con Electromagnetic switchgear comprising a magnetic drive and a con

1983-08-16

1984-12-25

Goldberg, E. A.

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Polarity-responsive

335131, 335136, H01H 5122, H01H 4500

Patent

active

044907010

ABSTRACT:
Switchgear consisting of a polarized magnetic drive and a contact apparatus placed thereabove is disclosed. The contact apparatus includes an adjusting slider which is movable to actuate bridge contacts and is operably connected to return springs which urge it to a neutral position. To obtain two or three stable positions of the adjusting slide without constructional modifications of the switchgear, the coil form for the magnetic drive is divided into two chambers which are spaced apart, are arranged side by side, and accommodate two coil windings. Between the coil forms and symmetrical to the longitudinal axis of the coil form is connected to a permanent magnet arrangement which is polarized at right angles to the longitudinal axis of the coil form and has a central through-port for a central armature. The armature is mounted with allowance for moving longitudinally in the bore of the coil form and is connected by means of a lever to the adjustable slider, so that the armature is urged to a stable central, or neutral, position by means of the two preloaded return springs. The springs are so arranged that when the armature slides from its central position in one or the other direction, only one or the other of the openings is activated.

REFERENCES:
patent: 2794882 (1957-06-01), Russell
patent: 3800251 (1974-03-01), Usui et al.

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