Security gate
US5373887A · kind A · utility
19Cited by
10References
19Claims
0Family size
Inventor
Key dates
| Filing date | Jun 17, 1993 |
| Grant date | Dec 20, 1994 |
| Priority date | — |
| Expiry date | Jun 17, 2013 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/148
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A security gate for protecting an opening in a building such as a door, window or the like comprises an upper guide-way which extends along the length of the opening an elongated vertical rods which extend across the opening with horizontal links pivotally connecting the rods. Roller are connected to every four uppermost link. The rollers engage in the upper guide-way so that the gate can be moved easily.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.