Impact hammer post driver
US3961672A · kind A · utility
16Cited by
11References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 13, 1974 |
| Grant date | Jun 8, 1976 |
| Priority date | — |
| Expiry date | Nov 13, 1994 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04H17/263
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The post driver apparatus of the instant invention is designed to be mounted on a truck chassis that can be readily moved from site to site and comprises a fluid-pressure impact hammer mounted in a shock absorbing cage assembly that permits rapid driving of posts into the ground without transmission of substantial shock forces to the frame and chassis on which the post driver is mounted. The apparatus is also equipped with means to vary the location and orientation of the impact hammer with respect to the truck chassis thereby minimizing the precision with which the truck chassis must be located.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.