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Patent
CA 1079712
PERCUSSIVE ACTION PNEUMATIC DEVICE FOR DRILLING HOLES IN SOIL Abstract of the Disclosure The percussive action pneumatic device for drilling holes in a soil by compacting same has a cylinder-shaped housing with a conically pointed head portion. This pointed head portion of the housing is engaged in the internal sur- face of the tail portion of a hollow tip with a pointed end. A transverse partition is provided internally of the hollow tip, in the tail portion thereof, the head portion of the housing being detachably connectable with said transverse partition.
294543
Chepurnoi Nikolai P.
Cherednikov Evgeny N.
Kostylev Alexandr D.
Plavskikh Vladimir D.
LandOfFree
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