Crowd control barrier
US5452963A · kind A · utility
33Cited by
7References
6Claims
0Family size
Inventor
Key dates
| Filing date | Jul 20, 1994 |
| Grant date | Sep 26, 1995 |
| Priority date | — |
| Expiry date | Jul 20, 2014 |
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 endwalls 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.