Earth working – Lawn aerator or perforator – or plug remover – Earth removing
Patent
1985-04-15
1987-01-06
Johnson, Richard J.
Earth working
Lawn aerator or perforator, or plug remover
Earth removing
111 4, 251297, A01B 4504, A01B 4502, F16K 3100, A01C 1100
Patent
active
046339574
ABSTRACT:
The specification discloses a soil plugging and ejecting apparatus for being inserted into soil to form and remove a soil plug and for ejecting the plug. The apparatus includes an elongate tubular body having a cutting edge on its lower end for piercing the soil to form a plug. A step attached to the body receives downward pressure to force the apparatus into the soil and a grip attached to the upper end of the body provides a means for holding and guiding the apparatus, and for pulling it out of the soil after the plug is formed. A valve mounted on the apparatus is in fluid-flow communication with a source of pressurized fluid and the body, and is operable to selectively admit pressurized fluid into the body to eject a plug from the lower end of the body. The valve can be actuated by a handle or a button.
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Brown Terrence L. B.
Johnson Richard J.
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