Door security device allowing partial door opening
US5531490A · kind A · utility
Inventor
Key dates
| Filing date | Mar 27, 1995 |
| Grant date | Jul 2, 1996 |
| Priority date | — |
| Expiry date | Mar 27, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/37
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A door security device allows partial opening of a door by coupling a door to a floor structure. The coupling is provided by a door bar including first and second length portions in spaced, parallel relation. The first and second length portions are interconnected by a coupling portion perpendicular thereto. One length portion is pivotally mounted in a floor on the inside of a doorway. The other length portion then assumes an upstanding vertical position. As the door opens, the door engages the upstanding length portion and moves towards an open position so long as the door bar permits. Eventually, the door bar blocks further opening of the door and maintains the door in a secure condition despite partial opening. In a second mode of use, the door bar is reoriented and inserted within the pivotal mounting of the floor to pin the door shut in closed condition. The door security device offers advantage in its ease of installation and use, low cost, and effective security against forced entry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.