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 range 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
20 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 range 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)
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7. A building siding product including 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 range 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 (8, 9, 10, 11, 12, 13, 14, 15)
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16. A building product including 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 range 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 (17, 18, 19, 20)
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Specification