Timing system and device and method for making the same
First Claim
1. A device comprising:
- a. a lens;
b. a base with a marking thereon; and
c. means for altering visibility of the marking on the base through the lens and thereby indicating a passage of time, wherein the means for altering visibility of the marking on the base comprises an optical medium positioned between the lens and the base.
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Accused Products
Abstract
A timing device for visually indicating the passage of a duration of time is disclosed. The timing device comprises a lens, a base and an optical medium therebetween. The optical medium preferably comprises one or more materials, layers or components that chemically or electrochemically change the duration of time. The timing device preferably comprises an opaque layer positioned between the lens and the base, wherein the opaque layer is dissolved over the duration of time, thereby making the base visible through the lens. The timing device is preferably fabricated in parts with reactive regions which are configured to couple together to form an activated device. In further embodiments of the invention, the device comprises means to generate an audible signal when the duration of time has passed and/or thermosensor for actuating the device within a range of temperatures.
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Citations
24 Claims
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1. A device comprising:
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a. a lens;
b. a base with a marking thereon; and
c. means for altering visibility of the marking on the base through the lens and thereby indicating a passage of time, wherein the means for altering visibility of the marking on the base comprises an optical medium positioned between the lens and the base. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A device for indicating passage of a duration of time, the device comprising:
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a. a lens;
b. a base;
c. a layer positioned between the lens and the base; and
d. means for altering transparency of the layer, thereby changing visibility of the base to indicate a passage of the duration of time. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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23. A method of making a timing device comprising:
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a. forming a first reactive region on a first piece of tape; and
b. forming a second reactive region on a second piece of tape, wherein at least one of the first piece of tape and the second piece of tape comprises an adhesive for securing the first reactive region and the second reactive region together and wherein at least one of the first reactive region and second reactive region comprises an optical medium that changes transparency when the first reactive region and the second reactive region are brought together, thereby indicating passage of a duration of time.
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24. A method of making a timing device comprising:
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a. forming alternating first reactive regions and second reactive regions on a piece of tape; and
b. forming a securing means on the tape, wherein a section of the tape comprising at least one of the first reactive regions and at least one of the second reactive regions is capable of being folded together and wherein at least one of the first reactive regions and the second reactive regions comprise an optical medium that changes transparency when the first reactive region and the second reactive region are folded together, thereby indicating a passage of a duration of time.
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Specification