Colour-forming materials, contact recording devices and pressure recording devices
First Claim
1. A device, comprising:
- a first element comprising an elastomeric hydrophobic material and a colour-forming material dispersed in at least a portion of the elastomeric hydrophobic material; and
a second element comprising a colour developing material;
wherein the device is adapted to record one or more parameters selected from;
duration of application of a pressure applied to the device or portion thereof, wherein the pressure level is above or below a predetermined threshold value, and wherein the duration of application is continuous or non-continuous;
application of contact with the device;
duration of contact, a predetermined level of pressure, or both, wherein the duration of contact is continuous or non-continuous;
the distribution of application of a pressure to the device or portion thereof, wherein the pressure is above or below a predetermined threshold value;
distribution of contact with the device or a portion thereof; and
application of a shear force, wherein the parameter is selected from direction, the shear force, or both.
1 Assignment
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Accused Products
Abstract
The present invention relates to devices and apparatus for detecting contact and optionally its duration and/or recording the level of pressure and/or its duration and/or recording the level of shear force and/or its duration. In particular, certain embodiments of the present invention relate to devices which comprise an element comprising a hydrophobic material and a color-forming material dispersed in at least a portion of the hydrophobic material. Certain embodiments of the present invention relates to materials comprising a solid dispersion of a color-forming material in an elastomeric hydrophobic material. The solid dispersion may take the form of a molecular dispersion or a partial molecular dispersion. Also included in the present invention, although not exclusively, are devices which comprise a hydrophobic material, a color-forming material and a color developing material wherein the color forming material and the color developing material are brought into contact when pressure of a predetermined threshold level is applied or removed from the device.
10 Citations
22 Claims
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1. A device, comprising:
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a first element comprising an elastomeric hydrophobic material and a colour-forming material dispersed in at least a portion of the elastomeric hydrophobic material; and a second element comprising a colour developing material; wherein the device is adapted to record one or more parameters selected from; duration of application of a pressure applied to the device or portion thereof, wherein the pressure level is above or below a predetermined threshold value, and wherein the duration of application is continuous or non-continuous; application of contact with the device; duration of contact, a predetermined level of pressure, or both, wherein the duration of contact is continuous or non-continuous; the distribution of application of a pressure to the device or portion thereof, wherein the pressure is above or below a predetermined threshold value; distribution of contact with the device or a portion thereof; and application of a shear force, wherein the parameter is selected from direction, the shear force, or both. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A system, comprising:
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a first element comprising an elastomeric hydrophobic material and a colour-forming material dispersed in at least a portion of the elastomeric hydrophobic material; and a second element comprising a colour-developing material wherein the system is adapted to record one or more parameters selected from; duration of application of a pressure applied to the device or portion thereof, wherein the pressure level is above or below a predetermined threshold value, and wherein the duration of application is continuous or non-continuous; application of contact with the device; duration of contact, a predetermined level of pressure, or both, wherein the duration of contact is continuous or non-continuous; the distribution of application of a pressure to the device or portion thereof, wherein the pressure is above or below a predetermined threshold value; distribution of contact with the device or a portion thereof; and application of a shear force, wherein the parameter is selected from direction, the shear force, or both.
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Specification