Device for forcing a reflective highway post into the ground
US5012873A · kind A · utility
17Cited by
2References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 14, 1989 |
| Grant date | May 7, 1991 |
| Priority date | — |
| Expiry date | Jul 14, 2009 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01F15/0484
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A mobile device for forcing a highway post into the ground in the vertical position, especially where the highway post is flexible and made of fiberglass, which involves a vertical column spaced from and supported by the mobile device, guide means mounted on the vertical column to hold a reflective highway post in a vertical position while the post is forced into the ground by repetitive blows from a hydraulically driven hammer and means for moving the vertical column and the guide means upwards in a vertical direction when the post has been forced a sufficient distance into the ground.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.