Systems for releasably securing a platform
US11479981B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 2019 |
| Grant date | Oct 25, 2022 |
| Priority date | — |
| Expiry date | Aug 10, 2041 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04G5/007
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A system for releasably securing a platform in a raised position is disclosed. A track is provided. An arm is connected at a first end to the platform. A second end, with a lug, is biased toward a side portion of the track. The lug is configured to ride in the track. As the platform is raised, the lug rides upward and enters the top portion and clears a first vertical wall, whereupon the lug rests in the depression and thus supports the platform in the raised position. As the platform is raised further, the lug clears a second vertical wall, whereupon the lug can ride downward in the side portion and through a bottom portion, past a door and out an open end of the bottom portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.