Hollow pole driver
US6899187B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Apr 30, 1999 |
| Grant date | May 31, 2005 |
| Priority date | — |
| Expiry date | Jun 2, 2021 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04H12/2215
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A hollow pole has an open top end and a pointed bottom end; the open top end supports an additional pole. A ring member is permanently mounted about a mid-section of the hollow pole. A hammer sleeve having a length less than that of the hollow pole inserts over the hollow pole and around the ring member. A pair of weights are mounted within opposed ends of the hammer sleeve and surrounds the ring member. The ring member provides an upper and lower limit to the hammer sleeve. With the pointed bottom end of the hollow pole positioned on the ground, the hammer sleeve is pulled upward and slammed downward driving the pole into the ground. To remove the pole, the procedure is reversed whereby the hammer sleeve is slammed upwards away from the ground. The additional pole can support a plurality of different items, such as, for example, a beach umbrella or an attachment to a volley ball net.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.