Pneumatically operated rammer
US5340233A · kind A · utility
24Cited by
8References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 7, 1992 |
| Grant date | Aug 23, 1994 |
| Priority date | — |
| Expiry date | Oct 7, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B1/04
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A pneumatically operated percussion apparatus for compacting soil, or other material. The apparatus includes a gear case that supports a percussion unit that is adapted to engage the soil to compact the same. A pneumatically operated motor is mounted on the gear case and air is supplied to the motor via a manually-operated "deadman" valve unit. A centrifugal clutch connects the output shaft of the motor to the percussion unit. The air flow to the motor is controlled by a governor to obtain a substantially uniform rotational speed for the motor output shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.