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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0524245 (1995-09-06) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 30 인용 특허 : 13 |
Spikes are described for use in apparatus useful for aerating soil, especially grass or hay ground. The elongated spikes are secured to a cylindrical drum. As the apparatus is towed across a field, the spikes penetrate the soil and loosen it as well as providing openings in the soil to improve absor
In field aerator apparatus of the type having a rotatable drum member and a plurality of band members carried on the periphery of the drum; wherein the band members are adjustably movable axially along the drum; wherein the improvement comprises a plurality of elongated spike members each having a b
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