Split iron frame door structure
US11466509B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 8, 2021 |
| Grant date | Oct 11, 2022 |
| Priority date | — |
| Expiry date | Jun 8, 2041 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B2003/7074
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
There provides a split iron frame door structure including top, middle and bottom split frames. A top edge frame and two first side edge frames of the top split frame, two second side edge frames of the middle split frame, and a bottom edge frame and two third side edge frames of the bottom split frame are thin-wall square tubes. Transversely-arranged first and fourth flat-iron edge frames are fixed to the bottom of the top split frame and the top of the bottom split frame, respectively. Transversely-arranged second and third flat-iron edge frames are fixed to the top and the bottom of the middle split frame, respectively. The first and second flat-iron edge frames are detachably connected through a first I-shaped section material and first connecting screws. The third and fourth flat-iron edge frames are detachably connected through a second I-shaped section material and second connecting screws.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.