Security vent
US5968216A · kind A · utility
Inventors
Key dates
| Filing date | Apr 23, 1998 |
| Grant date | Oct 19, 1999 |
| Priority date | — |
| Expiry date | Apr 23, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24F2007/0025
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A security vent is mountable to an existing air duct inlet opening and includes a housing assembly having a mounting frame fixedly secured to an inlet end of an air duct and a housing wall fixedly secured to the mounting frame by at least one side wall portion. The housing wall includes a front face being in spaced relation to the mounting frame and includes a perforated front face thereof. The mounting frame includes an opening therethrough which cooperates with the perforated front face of the housing wall permit flow communication of the air duct through the security vent. The housing wall cooperates with the mounting frame to define a filter-receiving region therebetween. A door is hingedly attached to an open side wall and is moveable between an open position and a closed position. A latch assembly is fixedly attached to the door and is moveable between a locked position and an unlocked position. The latch assembly is receivable by a latch-receiving aperture in the mounting frame to lock the door in the closed position. The filter-receiving region communicates through the open side wall to receive a filter therein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.