Patent ID: 6753850
Filing Date: 2004-06-22
Classification: G06F

Abstract:
A cursor control device comprising:an actuator having a flange that extends around a periphery of the actuator at a first end, the flange defining a cavity; a cap attached to a send end of the actuator; a substrate having a top surface, a bottom surface, a center and an outer peripheral edge; four strain sensitive resistors formed on the bottom surface of the substrate toward the outer peripheral edge, each of the resistors having a first end and a second end; a plurality of conductive traces, the conductive traces connected to each first end of the resistors; a plurality of contact pads attached to each second end of the resistors, the contact pads located toward the center of the substrate, the resistors connectable so as to form a wheatstone bridge; the actuator mounted to the substrate, the actuator extending over the top surface of the substrate and the flange engaged with the outer peripheral edge, the flange supporting the actuator at the outer peripheral edge such that stress placed on the cap is transferred to the actuator and the substrate and places a corresponding strain on the resistors.