Energy saving radiant insulative device
US4260225A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 18, 1979 |
| Grant date | Apr 7, 1981 |
| Priority date | — |
| Expiry date | Jun 18, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/40
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A device containing a normally transparent polymeric fluid which becomes sufficiently less transparent at a preselected temperature to reduce the transmission of light and radiant heat therethrough is provided. The conversion of the polymeric fluid from a transparent to a less transparent state is reversible and is a physical transformation which can be repeated an infinite number of times. For example, an enclosure member of a transparent film of a polymer such as polystyrene or polycarbonate which encloses a solution of a polymer with inverse solubility in the solvent, such as polyvinyl oxazolidinone in water, is usefully employed in office buildings and homes for the control of temperature within a desired range, thereby reducing the amounts of energy consumption.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.