Time dependent-temperature independent color changing label
AssigneeVision Works IP Corporation
InventorAlfred S. Braunberger
Life of this patent
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Abstract
A timing device for indicating a passage of a duration of time is disclosed. The timing device in accordance with the embodiments of the invention has a grid array architecture. The grid array architecture includes an electrode structure with an anode layer, a cathode layer and a thermistor layer. The anode layer and the thermistor layer are electrically coupled through a plurality of cathode trace structures. In operation the timing device is actuated through a suitable mechanism to initiate depletion of the anode layer and, thereby, indicate a passage of a duration time. As the anode layer depletes, sequential cathode trace structures are exposed and the thermistor layer acts as a temperature dependent resistor through a plurality of exposed cathode trace structures.
Claims26
A timing device comprising:
- a. an anode layer;
- b. a cathode layer;
- c. a base layer;
- d. an electrolyte attached to the base layer;
- and
- e. an activator to activate the timing device;
- wherein the anode layer and the cathode layer are positioned adjacent to one another along an axis of the timing device.
A timing device comprising:
- a. an anode layer;
- b. a base layer;
- d. an electrolyte attached to the base area;
- e. an activator to activate device;
- and
- f. a cathode array architecture, wherein a plurality of cathode trace structures are reintroduced throughout the timing device and further, wherein the plurality of cathode trace structures are positioned adjacent to the anode layer along an axis of the timing device.
A method of manufacturing an activation means of a timing device, the method comprising:
- a. making an electrode structure, wherein the electrode structure comprises:
- i. an anode layer;
- ii. a base layer;
- iii. a quantity of electrolyte;
- and
- iv. a cathode array architecture, wherein a plurality of cathode trace structures are reintroduced throughout the timing device and further wherein, the quantity of electrolyte is only partially deposited so that the quantity of electrolyte does not contact the plurality of cathode trace structures;
- and
- b. molding a protective reservoir to the cathode layer, wherein the timing device is activated when the reservoir is breached and a quantity of electrolyte contacts the main body of electrolyte thereby completing the circuit and activating the timing device.
Dependencies are inferred from the claim text.