Ramming device
US5110237A · kind A · utility
10Cited by
13References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 16, 1988 |
| Grant date | May 5, 1992 |
| Priority date | — |
| Expiry date | Sep 16, 2008 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02D13/10
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
In a device for driving-in pipes by means of a connecting piece engaging in the rear end of the pipe and a rammer engaging in the connecting piece, flanging of the back end of the pipe can be prevented by forming the connecting piece as an expanding ring having a cylindrical outer face and an inner cone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.