Safety barrier assembly
US5271183A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 1992 |
| Grant date | Dec 21, 1993 |
| Priority date | — |
| Expiry date | Sep 25, 2012 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/106
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A safety barrier assembly is disclosed to provide a movable barrier for an access passageway or doorway. The assembly includes a pair of upright support members and vertically travelling barrier means with at least two horizontally disposed elongate segments being selectively moveable between an operative passage blocking mode and inoperative non-blocking mode. Drive means are provided for moving the segments and lost motion means allow for positioning the segments a predetermined first distance apart when in the operative mode while positioning the segments close together when in the inoperative mode. Stop means may be provided for engaging one of the elongate members when in the operative mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.