Tamping shoe of a vibration rammer
US5261762A · kind A · utility
12Cited by
2References
4Claims
0Family size
Inventor
Key dates
| Filing date | Jun 16, 1992 |
| Grant date | Nov 16, 1993 |
| Priority date | — |
| Expiry date | Jun 16, 2012 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02D3/02
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A tamping shoe for a vibration rammer has a plurality of through holes communicating between an under surface and an upper surface. The through holes permit the escape of air trapped between the under surface and a surface being tamped, and thereby reduce the amount and pressure of air compressed under the tamping shoe. This reduces noise pollution produced during tamping. In a preferred embodiment, the through holes are tapered outward in the direction of air flow. Air passing through a through hole in a mount is released through a further through hole bored through a wall of the mount.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.