Battery voltmeter
AssigneeEastman Kodak Company
InventorsRichard T. Cataldi, Patrick D. Hein, Henry J. Heirigs, John C. Leo
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Abstract
The present invention discloses a battery voltmeter comprising: A) a dielectric layer; B) a conductive layer above or below one of the surfaces of the dielectric layer; and C) a temperature sensitive color indicator layer in thermal contact with the conductive layer, characterized in that the conductive layer has i) thermal insulating means under one of its surfaces and ii) sufficient heat generating capacity to affect a change in the temperature sensitive color indicator layer. The voltmeter can be intergrated into a label and attached directly to a battery.
Claims29
A voltmeter comprising:
- A) a dielectric layer;
- B) a conductive layer above or below one of the surfaces of the dielectric layer;
- and
- C) a temperature sensitive color indicator layer in thermal contact with the conductive layer,
- characterized in that the conductive layer has i) an air pocket under one of its surfaces and ii) sufficient heat generating capacity to affect a change in the temperature sensitive color indicator layer.
A label comprising an integral battery voltmeter having:
- A) a dielectric layer;
- B) a conductive layer above or below the dielectric layer;
- and
- C) a temperature sensitive color indicator layer in thermal contact with the conductive layer,
- characterized in that 1) the conductive layer has i) sufficient heat generating capacity to affect a change in the temperature sensitive color indictor layer and ii) sufficient thermal insulating means under one of its surfaces to overcome heat sinking when the voltmeter is in contact with a battery having an electrically conductive housing and 2) the voltmeter includes means for forming an electrical switch with the electrically conductive battery housing.
A label comprising an integral battery voltmeter having a plurality of layers in the following order:
- A) a dielectric layer;
- B) a conductive layer;
- C) one or more substrate layers for the label;
- D) a temperature sensitive color indicator layer;
- and
- characterized in that 1) the conductive layer has i) sufficient heat generating capacity to affect a change in the temperature sensitive color indicator layer and ii) sufficient thermal insulating means under one of its surfaces to overcome heat sinking when the voltmeter is in contact with a battery having an electrically conducting housing and 2) the voltmeter includes means for forming an electrical switch with the electrically conductive battery housing.
A battery having a label with an integral voltmeter;
- wherein the voltmeter comprises:
- A) a dielectric layer;
- B) a conductive layer above or below the dielectric layer;
- and
- C) a temperature sensitive color indicator layer in thermal contact with the conductive layer,
- characterized in that 1) the conductive layer has i) sufficient heat generating capacity to affect a change in the temperature sensitive color indicator layer and ii) sufficient thermal insulating means under one of its surfaces to overcome heat sinking when the voltmeter is in contact with a battery having an electrically conducting housing and 2) the voltmeter includes means for forming an electrical switch with the electrically conductive battery housing.
A battery having a label with an integral voltmeter;
- wherein the voltmeter comprises a plurality of layers in the following order:
- A) a dielectric layer;
- B) a conductive layer;
- C) one or more substrate layers for the label;
- and
- D) a temperature sensitive color indicator layer,
- characterized in that 1) the conductive layer has i) sufficient heat generating capacity to affect a change in the temperature sensitive color indicator layer and ii) sufficient thermal insulating means under one of its surfaces to overcome heat sinking when the voltmeter is in contact with a battery having an electrically conducting housing and 2) the voltmeter includes means for forming an electrical switch with the electrically conductive battery housing.
Dependencies are inferred from the claim text.