Variable screening
US8960259B2 · kind B2 · utility
7Cited by
5References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 13, 2011 |
| Grant date | Feb 24, 2015 |
| Priority date | — |
| Expiry date | Dec 19, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24F2110/30
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
In one embodiment, a variable screen includes a generally flat sheet having a front surface, a back surface, and a plurality of elongated slits that extend through the sheet from the front surface to the back surface, wherein the sheet includes a shape memory material that enables the slits to open into openings through which light and fluid can pass when a tensile force is applied to the sheet in a direction generally perpendicular to the slits and further enables the slits and openings to automatically when the tensile force is removed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.