Protection grid for hatch
US8555769B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 2012 |
| Grant date | Oct 15, 2013 |
| Priority date | — |
| Expiry date | Jul 24, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF41H5/226
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An offset ballistic protection device protecting a wall provided with a hatch (200), wherein said device comprises at least a first grid (1) offset with respect to the wall and comprising a first series of bars (1a) parallel to each other and substantially perpendicular to the pivot axis (400) of a hinge (300) of the hatch (200). This ballistic protection device (101) comprises a second grid (2) offset with respect to the hatch (200) and comprising a second series of bars (2a) substantially parallel to the first series of bars (1a), wherein the second grid (2) is positioned with respect to the first grid (1) so that the bars (2a) thereof are spatially offset in the plane of the second grid (2) with respect to the bars (1a) of the first grid (1), wherein the bars (2a) of the second grid (2) are therefore able to pass between the bars (1a) of the first grid (1) during pivoting of the leaf (200).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.