Closure system
US11946318B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 6, 2020 |
| Grant date | Apr 2, 2024 |
| Priority date | — |
| Expiry date | Jan 3, 2042 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B2009/1544
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A closure system may include a closure movable between an extended state and a retracted state. The closure may be configured to at least partially obstruct an opening in the extended state and allow access through the opening in the retracted state. The closure may include a first portion and a second portion opposite the first portion. The closure may deflect by a first deflection distance when a vertical force is applied to the closure. The closure system may include a strap coupled to the first portion of the closure. The closure with the strap coupled thereto may deflect by a second deflection distance when the vertical force is applied to the closure. The first deflection distance may be at least 100 percent more than the second deflection distance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.