Patent ID: 7009124

Claim:
An acceleration switch comprising: a substrate; a conductive layer disposed on the insulating layer, the conductive layer having a cantilever beam and an electrically isolated island formed therein; an electrically insulating layer disposed between the substrate and the conductive layer, the insulating layer having a recess next to the cantilever beam to allow the cantilever beam to deflect upon an acceleration; an insulating cap with a recessed area formed on a bottom surface thereof, the cap affixed to the conductive layer to form a hermetically sealed chamber therebetween to contain the cantilever beam and allow the cantilever beam to deflect upon an acceleration; and a first contact disposed on the cantilever beam and a second contact disposed in the recessed area of the insulating cap such that the contacts are in proximity to each other and able to electrically contact each other upon application of an acceleration to the switch.