Crowd control barrier system
US5611641A · kind A · utility
71Cited by
11References
23Claims
0Family size
Inventor
Key dates
| Filing date | Sep 26, 1995 |
| Grant date | Mar 18, 1997 |
| Priority date | — |
| Expiry date | Sep 26, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F19/22
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A portable crowd control barrier for use in sporting or entertainment events having lightweight body members formed of a resiliently deformable material and each defining an interior chamber and having slots formed in end walls thereof to receive wooden studs such that the introduction of liquid into the interior chambers deforms the body members, clamping the walls of the slots against the studs and locking the system in place.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.