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Patent Searching and Data


Matches 1 - 50 out of 96

Document Document Title
5330011
A free fall stroker for raising and dropping a drop hammer for soils bearing testing or the like includes a housing through which a drop hammer cable extends from one side to the bottom thereof. A pair of guide pulleys guide the cable th...  
5107934
A relatively simple pile driver includes a tubular holder with a closed top end and an open bottom end for receiving a pile; a tubular hammer with a closed bottom end and an open top end, the hammer containing lead and being mounted on t...  
4993500
An automatic drive hammer system includes an automatic drive hammer apparatus which is carried by a bucket pivotally mounted to a drill rig. The drive hammer apparatus may be pivoted in the bucket from an off-hole storage position to an ...  
4291780
A mobile generator for producing seismic waves in the ground, which includes a mobile four-sided frame, a boom having its lower end pivotally connected to the frame, and a worm gear mounted on the frame such that by rotating the worm gea...  
3768575
There is disclosed herein a sectional lead for a pile driver apparatus. The lead is of skeletal truss construction having parallel corner members providing front guideways for the pile driver and rear guideways for slides carried by a bo...  
3750765
A pile driving rig mounted on a free standing transportable frame. A sound reducing casing is provided on the frame which comprises a chamber for enclosing a pile driving means and all of a pile above ground. An aperture is provided in t...  
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Matches 1 - 50 out of 96