Abstract: A gravity-type sensor device comprising a switch which monitors the position of an object over a three dimensional pathway which extends dimensionally about all three orthogonal axes where the object may be tilted, rotated or inverted, as well as translated through space rather than maintained at a fixed location, so as to provide a signal to indicate that the object is moving in the correct three dimensional manner, whereby the switch is disposed within an external housing in a manner that allows the position of the switch to be altered relative to the housing, thereby allowing the angle or plane of the pathway to be adjusted when the housing is attached to different objects.

Abstract: A gravity responsive attitude switch containing electrical contacts separated by a gap, the switch containing a bead liquid and a carrier liquid, the two liquids being immiscible and having different electric resistivity values, where the liquid bead may be disposed between the contacts by properly positioning the switch. The contacts are connected in an electronic circuit which senses the difference in resistivity dependent on whether the bead liquid or the carrier liquid is bridging the gap between the contacts, which in turn determines whether an operative electric circuit is opened or closed.

Abstract: A three-axis gravity switch having a curved chamber to retain a gravity responsive member such as a ball of liquid mercury, the chamber having a three-dimensional pathway defined on at least one of its walls, where the gravity responsive member and pathway are conductive, either electrically or optically, such that a circuit is completed when the gravity responsive member contacts the pathway, where the switch can be rotated, inverted and translated in three dimensions such that the pathway defines an acceptable three dimensional course of rotation for the switch.