Solenoid switch suitable for motor starters

Details Solenoid switch suitable for motor starters Solenoid switch suitable for motor starters

1985-03-15

1986-08-05

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Multiple contact type

335131, H01H 6702

Patent

active

046045970

ABSTRACT:
A contact rod (19) carrying the contact bridge (25) for the starting current contacts of an engine starter circuit has, at its end inserted in the armature (15) of the solenoid a stop (21 and 23) against which the return spring (33) bears and which also serves to guide the switch rod within the armature. The return spring forces the component group, including the switch rod and the contact bridge, to move with the armature. This component group is readily assembled automatically in manufacture. After the excitation winding is deenergized, the armature, switch rod and contact bridge are moved back into the rest position by the full force of the return spring so that any sticking or welding of the contact bridge to the main current contacts is loosened, and damage therefrom prevented.

REFERENCES:
patent: 2561450 (1951-07-01), Russell
patent: 3430165 (1969-02-01), Mussbach
patent: 3815060 (1974-06-01), Turnbull
patent: 4450423 (1984-05-01), Morishita

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