Patent ID: 7934321

Claim:
A self actuated tilt switch for reducing electrical hysteresis, comprising: a casing enclosing a displaceably mounted shorting member, said casing having an electrically conductive inner surface associated with a circuit; said electrically conductive inner surface coated with a graphite film for reducing electrical hysteresis to below 1 degree (1°), said graphite film acting as an insulator or conductor as a function of said graphite film's thickness; said casing sealed at one end by an insulating layer within a conductive shell, said conductive shell at least partially contacting said electrically conductive inner surface of said casing; at least one electrode associated with said circuit inside of said casing; said at least one electrode further comprising a terminal face for engaging said shorting member, said terminal face coated with a graphite film for reducing said electrical hysteresis; said shorting member coated with a graphite film for reducing said electrical hysteresis; and said shorting member for closing said circuit once reaching a predetermined threshold angle.