Shock absorbing retractable bollard systems
US11085155B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2017 |
| Grant date | Aug 10, 2021 |
| Priority date | — |
| Expiry date | Oct 5, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01F15/003
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A bollard system includes a post extension to extend upward from a floor, a first collar to encircle the post extension, a first connector to encircle the post extension adjacent to the first collar, and a first handrail to be connected to the first connector. The bollard system includes a second connector to encircle the post extension adjacent to the first connector, a second handrail to be connected to the second connector, and a second collar to encircle the post extension adjacent to the second connector. The first collar is invertible selectively to a first lock position and a first release position, the first connector having greater freedom to rotate relative to the first collar when the first collar is in the first release position than when the first collar is in the first lock position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.