Tool driving or impacting – With vehicle support for drive
Reexamination Certificate
2007-11-20
2007-11-20
Nash, Brian D. (Department: 3721)
Tool driving or impacting
With vehicle support for drive
C173S185000, C173S090000, C405S259100, C405S232000
Reexamination Certificate
active
11231719
ABSTRACT:
A post driver unit includes a frame having a quick connect attachment to a front end loader vehicle in place of a bucket or for connecting the unit to a tractor using a three point hitch. The frame supports a vertical mast for rotation on a vertical axis by fluid actuated cylinder, and the mast supports an elongated boom for pivotal movement on a horizontal axis. A fluid actuated impact driver depends directly from an outer end portion of the boom by a universally supported connector member to provide the impact driver with a vertical axis, and the boom is pivoted by a fluid actuated cylinder system which provides for rapidly raising the boom and the impact driver and lowering the boom and impact driver at a controlled slower rate. The connector member may have different lengths according to the length of the post to be driven.
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Jacox Meckstroth & Jenkins
Nash Brian D.
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