Door device with pressure difference mitigating mechanism
US9670697B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 7, 2013 |
| Grant date | Jun 6, 2017 |
| Priority date | — |
| Expiry date | Apr 30, 2033 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B2007/202
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A door is formed into a folding door by dividing the door into two parts to left and right, that is, a hanging door and a door-end door pivotally supported by the hanging door, and the door-end door is used as the pressure difference mitigating mechanism, and the two doors are integrally operated in a normal time, while if a pressure difference is generated, the door-end door can be first opened in order to reduce an opening force, and the door device with a pressure difference mitigating mechanism with excellent operability is provided.A handle position, a latch position, and a torque are adjusted for a handle for door opening/closing, a door closer, a hinge closer for rotating the door-end door with respect to the hanging door, a latch A of the door-end door to a door frame, and a latch B of the door-end door to the hanging door.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.