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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0217972 (1994-03-25) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 36 인용 특허 : 0 |
Apparatus useful for aerating soil, especially grass or hay ground. The apparatus is intended to be towed by a farm tractor, and the apparatus includes elongated spikes on a cylindrical drum. As the apparatus is towed across a field, the spikes penetrate the soil and loosen it as well as providing o
Field aerator apparatus comprising: (a) a frame; (b) at least one cylindrical drum member rotatably carried by said frame for rotation about the longitudinal axis of said drum member; wherein said drum member has a diameter in the range of about 2 to 4 feet; (c) attachment means comprising a tongue
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