Safety switch intended to be fitted in an electrical circuit of

Details Safety switch intended to be fitted in an electrical circuit of Safety switch intended to be fitted in an electrical circuit of

1999-10-08

2000-12-26

Gellner, Michael L.

Electricity: circuit makers and breakers

Special application

Change of inclination or of rate of motion responsive

200 6153, H01H 3502

Patent

active

061663395

ABSTRACT:
The safety switch incorporates a substantially cylindrical inertial mass which is horizontally movable in all directions in a cavity of the-body of the switch. The inertial mass has a peripheral edge which is engageable with a cam action by projections of a resetting push button for returning it to a centered position. A base surface of the inertial mass has a central depression for housing the upper end of a push rod and maintaining the push rod in a position corresponding to a first state of the circuit. This base surface also has a concentric annular groove into which, when the inertial mass is in an eccentric position, the push rod enters causing the movable contact member to move to a position corresponding to a second state of the circuit. The switch also includes means for disengaging the push rod from the annular groove under the action of the resetting push button, in order to enable the inertial mass to return to the centered position. The arrangement is such as to make sure that when the resetting push button is pressed, the inertial mass cannot slide away by accident from the centered position to the eccentric position, even if the vehicle is not level.

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