Solar Heat Responsive Exterior Surface Covering
First Claim
Patent Images
1. An exterior surface covering comprising:
- (a) an outer layer having a transmission coefficient of at least 50 percent for electromagnetic radiation in the wavelength rage from 700 nanometers to 2500 nanometers; and
(b) an inner layer having a reflectance for electromagnetic radiation in the wavelength range from 700 nanometers to 2500 nanometers, the reflectance being dependent on a variable parameter, the reflectance varying by a factor of at least 0.5 as the parameter is varied over a predetermined range.
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Abstract
An exterior surface covering has a colored outer layer that transmits infrared radiation and an inner layer with a thermochromic pigment that absorbs heat at low temperature and reflects at high temperatures. The outer layer conceals the color change of the thermochromic pigment.
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Citations
32 Claims
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1. An exterior surface covering comprising:
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(a) an outer layer having a transmission coefficient of at least 50 percent for electromagnetic radiation in the wavelength rage from 700 nanometers to 2500 nanometers; and (b) an inner layer having a reflectance for electromagnetic radiation in the wavelength range from 700 nanometers to 2500 nanometers, the reflectance being dependent on a variable parameter, the reflectance varying by a factor of at least 0.5 as the parameter is varied over a predetermined range. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 24, 25, 26)
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9. An exterior surface covering comprising:
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(a) an outer colored layer having a transmission coefficient of at least 50 percent for electromagnetic radiation in the wavelength rage from 700 nanometers to 2500 nanometers; (b) a middle layer having a transmission coefficient for electromagnetic radiation in the wavelength range from 700 nanometers to 2500 nanometers, the transmission coefficient being dependent on a variable parameter, the transmission coefficient varying by a factor of at least 0.5 as the parameter is varied over a predetermined range; and (c) an inner layer having a reflectance of at least 40 percent for electromagnetic radiation in the wavelength range from 700 nanometers to 2500 nanometers. - View Dependent Claims (10, 11, 12, 13, 14, 15, 27, 28, 29)
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16. An exterior surface covering comprising:
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(a) an outer colored layer having a transmission coefficient of at least 50 percent for electromagnetic radiation in the wavelength rage from 700 nanometers to 2500 nanometers; (b) a middle layer having a transmission coefficient for electromagnetic radiation in the wavelength range from 700 nanometers to 2500 nanometers, the transmission coefficient being dependent on a variable parameter, the transmission coefficient varying by a factor of at least 0.5 as the parameter is varied over a predetermined range; and (c) an inner layer having an absorption coefficient at least 60 percent for electromagnetic radiation in the wavelength range from 700 nanometers to 2500 nanometers. - View Dependent Claims (17, 18, 19, 20, 21, 22, 30, 31, 32)
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23. An exterior surface covering comprising:
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(a) an outer layer having a transmission coefficient of at least 50 percent for electromagnetic radiation in the wavelength rage from 700 nanometers to 2500 nanometers; (b) a middle layer having a transmission coefficient for electromagnetic radiation in the wavelength range from 700 nanometers to 2500 nanometers, the transmission coefficient being dependent on a first variable parameter, the transmission coefficient varying by a factor of at least 0.5 as the first variable parameter is varied over a predetermined range; and (c) an inner layer having an absorption coefficient for electromagnetic radiation in the wavelength range from 700 nanometers to 2500 nanometers, the absorption coefficient being dependent on a second variable parameter, the absorption coefficient varying by a factor of at least 0.5 as the second variable parameter is varied over a predetermined range.
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Specification