Air channel grill for security institutions
US7722449B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 11, 2005 |
| Grant date | May 25, 2010 |
| Priority date | — |
| Expiry date | Sep 28, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24F13/082
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A security grill for a security institution has an air inlet face, an air outlet face, and zigzag channels extending from a point adjacent the inlet face toward the outlet face. The zigzag channels are defined by slats which are bent at least twice in alternating directions. The zigzag channels are divided into segments each having a cross-sectional width. The segments adjacent the air outlet face have a cross-sectional width less than any of the other segments along the channel. The slats are bent at certain angles which are larger than those of conventional security grills. Corners are created along each slat as a result of bending the slats in alternating directions. The corners are rounded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.