Portable driving device
US9157253B2 · kind B2 · utility
3Cited by
7References
5Claims
0Family size
Inventor
Key dates
| Filing date | Aug 29, 2012 |
| Grant date | Oct 13, 2015 |
| Priority date | — |
| Expiry date | Feb 2, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86582
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A portable driving device for permanently driving stakes, survey flags, posts, or the like, of varying sizes and shapes, into the ground. The invention provides for powering the device by a pressurized fluid with a single power cylinder, a valve control assembly including a self-exhausting spool valve controlled by a rod that runs through the spool valve, and safety switches in series for controlling delivery of pressurized fluid to the driving device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.