Inertia or gravity responsive tilt switch

Details Inertia or gravity responsive tilt switch Inertia or gravity responsive tilt switch

1994-05-23

1995-10-10

Scott, J. R.

Electricity: circuit makers and breakers

Special application

Change of inclination or of rate of motion responsive

200 6148, 200 6149, 200 6151, 200 6183, 200262, 200DIG29, 335151, H01H 3514, H01H 102

Patent

active

054572932

ABSTRACT:
A unique geometry is used to amplify the force created by gravity on a tilting mass to substantially increase the resulting contact force in a mechanical tilt switch. In some cases a novel contact surface containing abrasive particles is also used to substantially reduce the contact force required to achieve a low contact resistance. The combination of these two features permits a substantial reduction in the size of the seismic mass needed for mechanical tilt switches and results in a switch which has a comparable size and comparable performance to mercury switches without the use of mercury. In some applications the effect of vibration is reduced by partially filling the switch housing with a damping fluid.

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