发明名称 ROLLING CULTIVATOR SHIELD
摘要 ROLLING CULTIVATOR SHIELD A large diameter, short toothed rolling shield fabricated by vacuum forming talc filled polyethylene sheet having a smooth surface and sufficient flexibility to res ist soil build-up in damp conditions. Preferably the diameter of the shield is substantially grea ter than twenty inches and on the order of twenty four inches and includes teeth uniformly s paced around the periphery, each tooth having a length less than approximately ten percen t of the shield radius. A circular rib near the center of the shield and radial reinforcing ribs extending from the circular rib on the convex side of the shield to the base of alternating teeth provide stiffness and strength. The concave tool side of the shield is devoid of pro trusions to reduce churning of thrown soil.
申请公布号 CA2222745(C) 申请公布日期 2002.03.19
申请号 CA19972222745 申请日期 1997.12.23
申请人 DEERE & COMPANY 发明人 COLGAN, DAVID LEE;NOONAN, JAMES THOMAS;COX, PHILIP DAVID
分类号 A01B23/06;A01B35/18;(IPC1-7):A01B39/26 主分类号 A01B23/06
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