Elevating-type shelter door
US12152405B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 29, 2021 |
| Grant date | Nov 26, 2024 |
| Priority date | — |
| Expiry date | Sep 27, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A50/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An elevating-type shelter door enables operators to easily open and close in a short period of time, is highly water-tight, and has an excellent durability. A shelter door opens and closes an opening portion when a door body ascends and descends along a guide rail by means of an elevating device. The opening portion is provided on a ceiling of a shelter body. The shelter body is defines an interior space which serves as an evacuation space in an underground. A main body has a central convex portion which slidably fits to the opening portion along an inclination direction in which both the opening portion and the guide rail inclines. An elevating stand is slidably fixed to move along a rest column. The elevating stand is located above the opening portion when the door body is fully ascended and located in the interior space when the opening portion is closed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.