Foot-operated door security device
US4797970A · kind A · utility
Inventor
Key dates
| Filing date | Feb 22, 1988 |
| Grant date | Jan 17, 1989 |
| Priority date | — |
| Expiry date | Feb 22, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S292/15
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A door security device which is mounted in the floor or other flat surface in the arc of passage of a door which can be operated solely by one's foot. The door security device includes a housing with a flange plate which is mounted in the opening of the floor surface. A stop member is provided within the housing which assumes two alternate positions, a lowered position and a raised position. In the lowered position, the door is free to move through its arc of passage without obstruction by the door security device. By pressing down on the principal surface of the stop member, a latching mechanism is actuated which allows the stop member to be spring biased into the open position. In the open position the stop member obstructs the motion of the door through its arc of passage so that the door can be opened only a limited distance. To lower the stop member, one simply pushes down on the raised stop member a distance sufficient to actuate the pressure responsive latch mechanism that engages and holds the stop member in the lowered position. The door security device is principally spring actuated and is preferably constructed of metal to provide good endurance and strength characterist…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.