Solid state watch with inertial switch
AssigneeTime Computer, Inc.
InventorsArthur H. O'Connor, Robert E. McCullough
Life of this patent
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Abstract
Disclosed is a solid state wristwatch of relatively small size useful as a small man's watch or even a ladies' watch. It incorporates an arm responsive inertial switch for energizing a light emitting diode display. The display forms part of a timing module and is mounted on one side of a laminar ceramic substrate. Mounted on the other side of the substrate is a combination timepiece and calendar circuit chip. Printed circuits are formed on non-contacting surfaces of the substrate laminations and interconnected by conductive pins. The entire timing module is staked to a plastic frame which also carries the watch batteries, quartz crystal, trimmer capacitor, switches, and other watch components.
Claims8
A solid state wristwatch comprising an electrooptical time display for displaying time in decimal numbers, an electrical power supply terminal for energizing said time display from a power supply, and an arm responsive inertial switch coupling said power supply terminal to said display whereby said display is energized upon a predetermined movement of a wearer's arm upon which said wristwatch is mounted, said arm responsive switch comprising an evelope, a pair of side-by-side electrical contacts in said envelope, a conductive member movable in said envelope into and out of bridging engagement with said contacts, and a time delay circuit coupled to said contacts for producing an electrical output only when said member has made a complete cycle of movement between contacts bridging and non-bridging positions within a predetermined time period.
Dependencies are inferred from the claim text.