发明名称 |
Fence post extraction tool |
摘要 |
The fence post extraction tool is a tool used to extract a wooden fence post from the ground using only vertical movement. The wooden fence post extraction tool includes a threaded rod that screws into an expanding piercing tip. The expanding piercing tip is driven into a pre-drilled hole located on a top surface of the wooden fence post. The piercing tip is driven into the hole via a hammer sleeve that is slideable engaged about the threaded rod. The threaded rod is attached to an attachment clip located at a distal end from the piercing tip. The attachment clip secures to a lifting means suspended under a tripod, and which lifts the wooden fence post vertically from the ground. |
申请公布号 |
US8944410(B1) |
申请公布日期 |
2015.02.03 |
申请号 |
US201213717948 |
申请日期 |
2012.12.18 |
申请人 |
|
发明人 |
Skubisz Robert |
分类号 |
E21B19/00;B21F9/00;B23P19/04;E04H17/26 |
主分类号 |
E21B19/00 |
代理机构 |
|
代理人 |
Fletcher, Esq. Kyle A. |
主权项 |
1. The fence post extraction tool comprising: a threaded rod threadably engaged to a piercing tip that is hammered into a pre-drilled hole located on a top surface of a wooden fence post to be extracted upwardly along a vertical axis; wherein an attachment clip is secured between the threaded rod and a lifting means that is suspended under a tripod; wherein the threaded rod is of a length and has a bottom distal end as well as top distal end; wherein the bottom distal end includes a shoulder from which are bottom external threading; wherein the top distal end includes top external threadings for use with a threaded nut; wherein a hammer sleeve is included with the threaded rod and is slideably engaged therewith; wherein the hammer sleeve has the shape of a hollowed cylinder having an inner diameter greater than an outer diameter of the threaded rod; wherein the attachment clip has an “L” shape further defined by a vertical portion and a horizontal portion; wherein the vertical portion includes a “+” shaded opening whereas the horizontal portion and vertical portion share a grooved slot; wherein the grooved slot enables the top distal end to pass through and engage against the threaded nut. |
地址 |
|